DIY disc cutting machine for metal. Homemade cutting machine and table How to make a cutting machine for wood

From this article you can learn how to make cutting machine metal work with your own hands at home using the most simple materials. All stages of creating structures based on a cutting disc or grinder are described here in detail: preparation of materials and tools, calculation formulas, detailed step-by-step instruction, as well as related information with useful tips.

Disc cutting machines are tools whose design is based on a special platform or frame made of metal. The machine itself is equipped with parts that ensure reliable fixation of the material in a certain position at the required angle during the cutting process. A disk made of high-speed steel is used as a cutting element in such structures. It is also called carbide. A wheel coated with an abrasive material can also be used for cutting metal. The cutting element is driven by an electric motor with a belt or gear drive.

Note! In low-power versions of the tool, it is possible to use a cutting element mounted directly on the shaft of an electric motor. In other cases, using the disc in this way can be dangerous.

In disk machines, there are three different feeds of the cutting component:

• lower;
• pendulum;
• frontal.

Depending on the number of cutting elements, machines are:

Making a disc cutting machine for metal with your own hands: procedure

When manufacturing a machine designed to work with metal, the actions are performed in the following order:

Calculation of a pulley for a homemade metal cutting machine

The calculation of the diameter of the pulleys is carried out taking into account the rotational speed of the disk and other parameters. Assuming that the motor power is at least 300 W, the rotational speed of the disk will be at least 3000 rpm, and its diameter will be 40 cm.

Helpful advice! During the process of cutting metal, the nut in the disk fixation area may come loose. To avoid this, it is recommended to place the drive pulleys on the left side, and the disk itself on the shaft on the right.

Typically, discs are marked by the manufacturer, who marks the product with the maximum permissible rotational speed value. In this case, the indicator is 4400 rpm. Therefore, you can select any speed within the range of 3000-4400 rpm. Data for calculations:

• rotational speed of the motor – 1500 rpm;
• the diameter of the pulley intended for installation on the shaft is 6.5 cm;
• rotational speed of the disk – 3000 rpm.

The calculation is performed in the following sequence:

1. Set the length of the shaft around the perimeter. To do this, multiply the number π, which is equal to 3.14, by the diameter size: 3.14 x 6.5 = 20.41 cm (shaft length around the perimeter).
2. The resulting value is multiplied by the required number of revolutions: 20.41 x 3000 rpm. = 61230 cm/min.
3. The result must be divided by the number of engine revolutions: 61230 cm/min/1500 rpm. = 40.82 cm (perimeter motor pulley length).
4. The resulting value is divided by the number π: 40.82 cm/3.14 = 13 cm (required pulley size).

Calculating the length of the belt for a homemade metal cutting machine with your own hands

To perform these calculations you will need the following data:

• drive pulley parameters (radius);
• the distance separating the center points of the pulleys;
• parameters of the driven pulley (radius).

Having 2 pulleys with dimensional parameters of 13 cm and 6.5 cm, you can make the necessary calculations. Since the distance between the centers of these elements can be changed (since it is necessary to bring the belt into a state of tension), a segment 50 cm long will be taken as an example.

Now you need to calculate 1/2 the circumference of each pulley. Since the drive belt runs between them twice, double the distance between the center points must be added to this value. First pulley (circumference):

3.14 (number π) x 3.25 cm = 10.20 cm

Second pulley (circumference):

3.14 (π number) x 6.5 cm = 20.41 cm

Drive belt (required length):

20.41 cm + 10.20 cm + 50cm x 2 = 13.06 cm

Helpful advice! To get a more accurate result, you should make calculations with the maximum and minimum distance between the central points of the pulleys and select the average meaning.

Drawing of a pendulum-type cutting machine: on the left - dimensions of the base, on the right - design features of the pendulum

To make your own machine design for working with metal, you should prepare the necessary tools.

The required set of tools and materials includes:

• welding machine;
• metal corner (steel);
• channel and chain;
• button to turn on/off;
• bearings;
• shaft and electric motor;
• electric drill;
• sheet steel to create a working surface;
• box for placing the electrical components of the machine.

Principles of creating a machine for cutting metal

The manufacturing scheme for a homemade machine is subject to certain principles; they must be taken into account before getting down to business:

• selection of the optimal cutting angle. The acceptable range is 45-90°. In most cases, experts prefer cutting at right angles;
• The diameter of the cutting disc is selected taking into account what materials the master will work with on this machine in the future. The larger the diameter of the cutting element, the easier it will be to cut thick metal;
• When designing and drawing up drawings, indicators such as the dimensions of the future machine and its weight must be taken into account. These values ​​are directly influenced by the materials from which the equipment will be made. The layout of the parts also matters.

When drawing up drawings Special attention attention should be paid to vibration supports that are installed on the legs.

Assembling a metal frame for a cutting machine

After all the tools have been prepared and the drawings have been selected, you can proceed directly to the process of creating the machine. Using a steel angle, it is necessary to make the frame part of the structure. In accordance with the drawings, which you can draw up yourself or find on the Internet, frame elements are cut out. All of them are connected to each other by welding. First you need to check the size suitability.

A channel is welded to the top of the frame - it will become a guide element and will serve as the basis for further installation of the cutting component on the machine. This channel will become a kind of connecting link between the electric motor and the cutting element. After this, vertically located racks are secured to it using bolts. It will be necessary to weld the structure of another frame. Dimensional parameters are selected individually, taking into account the dimensions of the electric motor and its features. When choosing an electric motor for a machine, it is better to pay attention to asynchronous type modifications. This type equipment is characterized by increased reliability and durability. There is one subtlety when choosing a motor. The more powerful the engine, the smoother the drive will move.

Assembling the electrical components for the machine

Installation of equipment involves mounting and connecting the working shaft to the electric motor of the machine. The way in which this can be done is not fundamental. If the drawings contain instructions for performing this procedure, it is better to follow them, since the correct operation and reliability of the tool depends on the quality of installation.

Helpful advice! Some parts that you cannot make yourself can be ordered from a turner. These include flanges for fixation, as well as a pulley.

To fix the motor on a metal frame, it is better to use bolted connection with nuts. It is recommended to place a box near the engine where the switch and electrical diagram, as well as a remote control for controlling the instrument. It is better to place the channel, intended for fixing the cutting disc, on a spring. You need to make sure that when you release it, it returns to its original place. To secure the spring, you can take bolts and a clamp. The electrical component is the most important part of the tool. Be sure to include in the design a starting circuit, as well as a button for emergency shutdown of the machine. It is necessary to achieve such an arrangement of parts in which the electric motor will be connected to electricity through an automatic machine and gearbox, and not directly. A three-way starter will be enough to turn on and fully start the engine. It will also power the shutdown button. Finally, it is worth taking care of the presence of protective devices that will protect a person during the work process. To do this, you need to make a protective casing. It will prevent sparks and small metal particles from getting into your eyes.

Making a cutting machine from a grinder with your own hands: drawings, technology

The designs of cutting machines made on the basis of an angle grinder are of two types (depending on the placement of the angle grinder). In the first case, you get a frame on which the angle grinder is very rigidly fixed. Only the disk rises above the working surface, for which there is a special slot in the table. This machine operates on the principle of a circular saw.

Note! When working with such a machine, you have to move the workpiece yourself, which is why the accuracy of the work is lost. In addition, this process can be unsafe, so drawings with a hidden type of placement of an angle grinder are not in high demand.

The second option assumes that the workpiece remains stationary and cutting element moves. Due to the fact that the grinding machine is located on top of the tabletop, cutting parts does not require much effort.

List of tools and materials for a do-it-yourself grinder cutting machine

When making a tool yourself, it should be taken into account that the accuracy with which it will work largely depends on the stability of the structure. For this reason, the thickness of materials for manufacturing is associated not so much with the requirements for the strength of the machine body, but with the need to ensure the proper level of rigidity. List of materials:

• profiled pipe with square section(2.5x2.5x0.25 cm);
• sheet steel (sheet thickness 0.4-0.5 cm);
• profiled pipe with a rectangular cross-section (4x2x0.25 cm);
• ball bearings – 2 pcs. (No. 203, 204 or 202);
• calibrated rod no more than 10 cm (thickness is selected taking into account the hole on the inner race of the bearing);
• metal rod (diameter 0.8-1 cm);
• fasteners (bolts with nuts, M or M8 thread);
• metal tire (2x0.4 cm).

List of tools:

• angle grinder;
• electric drill (can be replaced with a drilling machine);
• set of drills;
• a set of dies designed for forming metal threads;
• welding machine;
• open-end wrenches.

Choosing a suitable cutting tool for a homemade cutting machine from an angle grinder

An angle grinder is the main component of a machine for working with metal. Experts do not recommend using a small tool for these purposes, which has a power of no more than 500-600 W. In such grinders, the cutting discs have a diameter of no more than 12.5 cm. These restrictions are due to the fact that a cutting element with a large diameter is considered universal and very reliable - it is able to cope with cutting thick workpieces.

Helpful advice! Instead of welding, threaded connections can be used to secure parts, but they are less reliable and will not provide the required level of strength.

You also need to be careful when choosing an angle grinder because there is a wide variety of designs on the market. Since this power tool is not completely unified, the construction of the machine will be carried out according to a certain modification and size of the angle grinder. If the machine breaks down, installing another angle grinder may be not only problematic, but also impossible. We'll have to redo the pendulum and all the fastenings. Therefore, it is worth choosing a tool from the range of large and already proven companies, for example, Bosch or Makita.

Cutting machine drawings: how to make a cutting tool from a grinder

On preparatory stage design and drawing are carried out. There are no uniform sizes for the reason that the design of each machine is subject to a certain model cutting tool. Ready-made drawings, of which there are many online, can be adjusted to fit the grinder. They allow you to navigate what the structure of the structure and its dimensions will be.

It is better to start drawing up the drawing with the body part. In some cases, it may be necessary to build a separate platform instead of a frame. Such a platform will be fixed on mechanic's workbench. Next, the dimensions and nature of the location of the key elements on the machine are determined. It is necessary to measure the center distances between the mounting holes located on the gearbox, and also measure the grinder itself. All this data is used to create drawings. After the pendulum and grinder mounts are designed, the rotary assembly is designed.

Helpful advice! The accuracy and rigidity of the machine depends on the distance between the cutting element and the hinge joint. The smaller this gap, the better. It is recommended to install a pendulum with a minimum length.

After drawing up the drawings, all that remains is to select the materials, calculate their quantities and begin constructing the structure.

Technology for creating a cutting machine from an angle grinder

The manufacturing technology of a machine for cutting metal based on a grinder is almost the same as in the case of a cutting disc:

1. Preparation and production of parts for the frame.
2. Arrangement of a hinge joint on a pendulum arm.
3. Manufacturing a U-shaped bracket with holes for mounting a grinding machine gearbox.
4. Making a U-shaped clamp and strip that will fix the angle grinder body to the pendulum.
5. Installation of the U-shaped clamp and U-shaped bracket to the cutting tool: by welding or threaded connection All these parts are attached to the console part.
6. Pressing bearings into supports.
7. Double-sided pressing of bearing units onto the shaft. To increase the strength of the connection, you can tin the axle with a thin layer of tin using a soldering iron.
8. Fastening the pendulum with supporting node parts to the edge of the platform (distance from the edge 0.5-0.6 cm) using a welding machine.
9. Installation of the grinder and protective casing.
10. Installation of the return spring.

After the structure is assembled, it is necessary to perform a test run and check the correct operation of the equipment, as well as the placement of all parts on it. On final stage The groove is adjusted to fit the cutting element, and supports are installed to secure the workpieces. When finishing is completed, the body of the machine must be covered with a thin layer of enamel. Painting will protect the instrument from damage that rust can cause.

A metal cutting machine is useful for any workshop. It is required when construction work and in the metal shop. The market offers a wide variety of machines, but not all of them are affordable. For home workshops, the way out of this situation will be a homemade metal cutting machine. To manufacture it, you will need certain skills in working with a welding machine and plumbing tools. It will require a metal cutting unit from a master and the skills of an electrician.

Required tools and materials

In order for the future machine to reliably perform its functions, you will need a simple set of tools:

• drill;
• Bulgarian;
• taps;
• welding apparatus;
• spanners;
• dies.

An additional engine will be required. The optimal option is a 2 kW motor. It is recommended to purchase single-phase or three-phase motors for such machines.

The necessary elements of the future unit are:

• sheet steel 3 mm thick;
• bearings 204;
• 2 pulleys;
• metal corner;

Any homemade mechanism must be customized to suit your needs and drawings. The master pays special attention to safety precautions. When working with cutting units, a particularly vulnerable part of the body is the hands, which can easily be damaged by neglecting simple rules work safety.

Disc cutting machines

In practice, craftsmen make machines of three types: belt, pendulum, disk. The first type is the most difficult to make in a home workshop. The best option is a disk-type metal cutting machine.

These units include:

• cutting disc;
• pendulum;
• Desktop;
• Electrical engine;
• drive mechanism.

For a standard workshop, the sufficient power of the engine used is 1.5 kW. The power of the electric motor depends on the type of metal used. If metal with thin walls is used during operation, then a power of 1.5 kW will be sufficient for such an engine. To carry out frequent work cutting pipes from profiles, you will need a 3 kW unit.

An important indicator of the engine is the number of revolutions it makes during the cutting process. metal part. The recommended speed is at least 3000 per minute. At low motor speeds, the cutting disc is not able to operate optimally.

Particular attention must be paid to the diameter of the circle used. Experts advise choosing circles with a diameter of 300-350 mm with an electric motor power of 2 kW. With the specified parameters, the recommended engine speed is 3000-4400 rpm. As the indicator increases, the circle is destroyed, and at low speeds it quickly overheats and wears out.

What to pay attention to

The choice of drive mechanism matters. A belt drive does this job well. To make it you will need 2 pulleys of the same size. The first pulley is fixed on the drive shaft of the cutting wheel, the second on the electric motor shaft. The shaft is mounted on two bearings.

To prevent the belt from slipping and maintain the necessary tension, it is necessary to secure the electric motor in the rear part of the pendulum. Fastening is done with 4 bolts.

The pendulum has its own separate requirements. It should be:

• balanced;
• well cooked;
• move perpendicular to the desktop.

The pendulum is mounted on two vertical posts. Each post has slots into which a bushing with a diameter of 11 mm is inserted. The stands are made of a metal square measuring 40*40 mm. Optimal height- 90 mm.

Desktop Design Requirements

The cutting unit must have a working table of optimal dimensions. The required parameters are: 701*1000*900 mm. The table is welded from a corner measuring 25*25 mm, after which it is covered with a steel sheet having a thickness of 3 mm. Slots are made in advance in the sheet at the point where the circle rotates.

It is fixed at the workplace with a rotary clamp and a rotary stop. Such a homemade mechanism allows you to cut products at an angle and perpendicularly.

Any cutting machine for metal requires compliance with a number of conditions during its installation:

• adjustment of the rotation angle is required (its location must be perpendicular to the surface of the desktop);
• the master needs to protect his hands from damage by installing covers around the disk and rotating elements;
• it is important to calculate the rotational speed of the circle in advance;
• equip the handle with an emergency stop button, which, when pressed by hand, instantly stops the operation of the entire mechanism;
• Place the wheel feed force in the cutting zone.

Procedure for making your own machine

Any machine with which it is possible to cut metal is assembled according to the following scheme:

1. preparation of protective covers intended for installation on the drive belt;
2. installing a motor using a drive belt as a connecting part between the motor and the shaft;
3. manufacturing a shaft for attaching a pulley and a cutting disc to it (the unit is assembled and mounted on a pendulum, which is the upper part of the structure);
4. manufacturing a shaft for mounting a pendulum on it;
5. manufacturing a machine frame on which the metal for processing and a spark catcher are supposed to be mounted;
6. the pendulum is fixed on the frame;
7. electrical wiring is installed;
8. The device is launched in test mode to check the build quality.

Features of the assembly of the device based on the grinder

In a workshop, it is possible to assemble a homemade metal cutting machine based on a grinder. Tools and materials needed:

• start relay;
• several profile pipes with a square or rectangular cross-section;
• control pedal;
• metal sheet for desktop;
• spring;
• metal corner;
• two bearings.

Machine start relay

Unlike a disk-type machine, the operation of such a device has a more accurate result. The assembly process is very similar to the disk assembly, but has a number of features:

• frame parts are manufactured;
• a hinge joint is installed on the pendulum arm;
• a bracket is made in the shape of the letter “P”, in which holes are made for mounting the grinder gearbox;
• strips with clamps are made, due to which the grinder is secured to the pendulum;
• welding the clamp, bracket and cutting tool (an alternative would be to use a threaded connection for mounting these elements);
• pressing into bearing supports;
• pressing bearings onto the shaft from both sides;
• welding the pendulum on the edge of the working platform with a mandatory distance of 0.5 cm from the edge;
• installation of an angle grinder and a protective casing;
• installation of the return spring.

After installing all structural elements, the machine is started in trial mode. Additionally, you will need to fit the groove under the tool and install supports with which the metal being processed is secured.

At the final stage of work, the machine is coated with enamel. It will protect the unit from the adverse effects of rust.

When working with an angle grinder, the master must protect his hands and eyes from the effects of sparks. Any work is carried out wearing protective gloves and a mask.

“From the master class presented by the author, you will learn how you can make a cutting machine yourself with a 3-phase motor and a bunch of scrap metal. Every self-respecting master is simply obliged to have an angle grinder in his workshop, but long work With the help of an angle grinder, back problems begin, because when processing and sawing metal you have to bend over, which is not very professional. Many people today convert grinders into cutting machines, which greatly increases labor productivity. But our author went even further and created the machine absolutely from scratch, having a 3-phase motor still made in the Soviet Union and metal in the form of an angle, a pipe and a sheet. A table was also welded from a corner, and its thickness is 5 mm.

It is quite convenient to work with such a machine; you no longer have to bend your back over the metal, but simply place the workpiece on the table, clamp it with a yew and lower the sawing part. With a powerful engine installed at 1500 rpm, metal cuts like butter.

So, let's look at what exactly the author will need to assemble the machine?

Materials

1. 3 phase electric motor 1500 rpm
2. corner
3. professional square pipe
4. dye
5. bearings
6. screw
7. spring
8. cutting disc
9. sheet metal 2 and 5 mm
10. pipe
11. plywood
12. automatic shutdown
13. belt

Tools

1. lathe
2. Bulgarian
3. welding machine
4. drill
5. hammer
6. file
7. calipers
8. set of wrenches

The process of creating a cutting machine

And so, first of all, the author begins to grind the spindle onto lathe, it is sharpened for 306 bearings and has a diameter of 30 mm. On one side there is a seat for the pulley, and on the other, respectively, for installing a cutting wheel and a thread for its fastening.

Scheme and drawings.

2 pieces are cut from the pipe - these will be the seating rings for the bearings.
The bearing is inserted into the ring and placed on the spindle.
After that, another piece of pipe is cut, it will connect 2 landing rings.
It grabs at the edges, the main thing is not to weld the bearing itself)))
As already mentioned, a pulley is attached to one side.
And on the other side there will be a cutting disc installed.
After that, a machine frame is made with holes made for adjusting and tensioning the belt.
Fitting and installation of an electric motor.
Next, the craftsman works on making a protective casing for the cutting disc.
What is 2 mm metal and corner used for?
The corner of the casing is welded to the machine frame.
The hinge is made of 2 pipes different diameters by inserting one into the other.
A table was welded from a corner and a 5 mm sheet of metal.
A hinge is welded to the tabletop.
The master makes the handle from professional pipe and steel rod.
This is what happens.
To secure the workpiece, a vice is needed and it will be made from a water valve.
One corner remains stationary, and the second moves and clamps the workpiece.
A cover is also made to protect the belt.
Installed.
The machine is connected.
Spark protection
Plywood shelves have been added to the bottom of the table. Painting. And this is what the machine looks like when finished. Our master has such a wonderful and powerful cutting machine; now he can work calmly and without straining his back for a longer time, and this increases productivity and income accordingly. An assembled machine from scrap metal looks almost no worse than its factory counterpart, and most importantly, you will get such a miracle machine almost free of charge (if you have the necessary components and spare parts) If you liked the material, then we invite you to join our group

Metal cutting machine - indispensable tool in a home workshop, metal shop, construction site. Many industrial models of these tools are produced, but their price is sometimes unaffordable not only for a private craftsman, but also for a small enterprise. There is a solution - it’s not at all difficult to make a metal cutting machine with your own hands. This requires only certain skills in working with a welding machine, plumbing tools, and some qualifications as an electrician. You also don’t need anything scarce or unavailable for free sale from materials.

Materials and tools

To work you will need:

• Bulgarian;
• welding machine;
• drill;
• set of dies, taps, wrenches.

You will have to buy an electric motor with a power of 1.5-2 kW, single-phase or three-phase. In addition, you will need two pulleys, a shaft, bearings 204 or 205, a metal corner, and sheet steel 2-4 millimeters thick. When all this is assembled, the actual production of the machine begins.

In this article we will look at the manufacture of a machine based on an electric motor.

You can make the drawings yourself using material from the Internet, or use ready-made ones, such as these. But experience shows that it is best to adapt the drawings to the materials that you have available. As a rule, DIY designs work best when you “customize” them to suit you. Naturally, in this case, certain rules and requirements must be observed that apply to a high-risk tool, such as a cutting disc machine or a pendulum saw, both homemade and industrial.

Most do-it-yourself metal cutting machines are of the pendulum type. Band machines are more complex to manufacture, but they can be made in a small workshop or metalworking shop. For now, let's focus on the most convenient type of cutting machine - a disk one. The general design can be seen in the video.

It consists of several main components:

• electric motor;
• pendulum;
• drive mechanism;
• cutting disc;
• desktop.

Let's look at them separately.

Engine

Depending on the required power of the metal-cutting machine and the scope of its use, we select the engine power. It should be in the range of 1.5-3 kW. If you plan to use a cutting machine in a home workshop, a small metalworking shop, where cutting profile pipes, fittings, angles or other rolled products is done relatively rarely, and thin-walled metal is used as workpieces, a power of one and a half kilowatts will be enough. For small-scale production, work on a construction site, or the manufacture of frames for any purpose, a more powerful engine will be required.

If you have a three-phase motor with a power of about 3 kilowatts, it can be connected to 220 volts using a star circuit instead of a delta circuit. But it must be taken into account that its power will decrease by 25-30%. The main thing is that the speed indicated on the nameplate will be maintained.

To install on a metal cutting machine, the engine must have a speed of 2500-3000 per minute. This is due to the fact that it is at these speeds that the cutting disc operates optimally.

For a homemade metal cutting machine, circles with a diameter of 300-400 millimeters are used. Here, too, you need to proceed from the needs of production. You shouldn’t chase too large a disk diameter - the farther the working edge is from the center, the less cutting force, and a more powerful engine will be required. The optimal ratio of engine power and disc diameter is 2 kilowatts at three thousand revolutions and 300 millimeters in diameter.

A self-made metal cutting machine must first of all be safe. The cutting discs indicate the maximum number of revolutions at which they can be operated. As a rule, it should not exceed 4400 rpm. If it turns out more, the disk may collapse, which is unsafe. If the number of revolutions is less than 3000, then the cutting speed will be insufficient, and the disk will overheat and wear out. It is these figures that should be taken as the starting point for calculating the power transmission.

Drive unit

It is most convenient to use a belt drive as a drive mechanism. To do this you will have to find two pulleys of the same diameter. One of them is mounted on the motor shaft, the second - on the drive shaft of the cutting disc. The disk shaft is mounted on two bearings. It is best to use the scheme when the drive mechanism is located on the left of the disk mounting cloud. It’s more convenient to work this way, and safety rules are followed. The disc fastening nut will not be at risk of loosening.

Drawing of a cutting machine for metal

To tension the drive belt, the engine is mounted at the rear of the pendulum with 4 bolts located in longitudinal slots. It can shift in the direction of the central axis of the machine (perpendicular to the axis of rotation of the motor shaft) by 5-7 centimeters. This will maintain the required belt tension and prevent it from slipping. It will also be easier to replace the belt if the previous one becomes unusable.

Console (pendulum)

The cantilever part of a metal cutting machine is one of the most important. In addition to the fact that it must be carefully balanced, reliably welded in compliance with all required sizes, it must still move strictly perpendicular to the desktop. The basis for mounting the pendulum are two vertical posts with slots for the pendulum bushing (diameter 10-12 mm). It is best to make them from a steel square of 40x40 millimeters. The height is approximately 80-100 millimeters, but you can calculate your own version.

A bushing shaft is installed horizontally in the holes of the racks, to which a rocker arm is welded, consisting of two levers, the ratio of which is one to three. A platform for installing the electric motor is welded on the short arm. On the long arm there is a cutting wheel drive shaft. The ratio of the lengths of the levers is approximate; it must be calculated so that in the non-working position the weight of the engine outweighs the weight of the assembled saw part (with protective covers). To bring the disk of the switched-on machine into contact with the metal, it is necessary to apply a small but noticeable force.

For ease of operation, it is attached to the bottom of the engine platform. return spring, and the upward deflection angle of the pendulum is regulated by a cable or chain, fixed at one end to the table and at the other to the bottom of the long lever.

Desktop

The optimal dimensions are 700x1000x900 mm. It is welded from a 25x25 mm corner and covered with a steel sheet 3-4 mm thick, in which slots are made in the rotation zone of the disk. A rotary stop and a clamp with a rotary clamp are fixed on the table. This allows you to cut both perpendicularly and at the required angle. Very interesting option homemade machine is shown in the video. Here it is not the workpiece that turns, but the console with the disk and the motor.

Installing a disc-type cutting machine is not particularly difficult for a qualified mechanic. It is important to adhere to some fundamental requirements:

• correctly calculate the disk rotation speed;
• adjust the angle of rotation, it must be strictly perpendicular to the plane of the desktop;
• set the force for feeding the disk into the cutting zone;
• install a button on the handle emergency stop;
• equip the cutting machine with protective covers for the disk and rotating parts.

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Self-construction of a metal-cutting machine

An example of a homemade machine for precision work

When, for some reason, you often have to process metal at home, you come to the understanding that working with an angle grinder is at least inconvenient. Cutting metal is much easier if you have a metal cutting machine. With its help, the cutting line will become ideal, and the established process will go much faster.

But if you think about buying such a machine and look through the prices in the store, you will find that they are very expensive, not every person can afford it. The way out of this situation is to make a metal-cutting machine with your own hands.

Homemade metal cutting machine

Equipment classification

So let's start with general information about metal-cutting machines. Structurally, they are all united by the presence of an electric motor, transmission and cutting disc. Finding a drawing for the manufacture of such equipment is not a problem. Once you become familiar with how a disc cutting machine works, it won’t be difficult to make the adjustments you need while building it yourself. Now let's look at the main fundamental nuances:

Drawing of a transmission mechanism for a cutting machine

Cutting equipment is also classified according to the type of saw installation:

• Band machine.
• Abrasive-cutting.

The latter is designed for cutting thick metal fittings, various rods, square profiles and pipes of different diameters. Here you can cut various solid parts and profiles at different angles. The band saw operates on the basis of a closed cutting saw, so it is not a circular saw, the saw moves on pulleys. It’s worth saying right away that it’s easier to build a disk version with your own hands.

Self-production

To build your own disc cutting machine you will need:

Mechanical part of cutting machine

• Steel corner.
• Welding machine.
• Bearings.
• Chain.
• On/off button.
• Channel.
• Electric drill.
• Sheet of steel for the work surface.
• Electric motor.
• A box that will contain the electrical component.

Having collected everything necessary materials and tools, you can begin construction. First of all, it is necessary to make the frame of the machine from a steel corner. First, they cut out according to the drawing individual elements, figure out how they will fit together, and then weld them into a single structure with their own hands.

A guide channel is welded to the top of the frame, which will become the basis of the structure for attaching the cutting element of the equipment. This channel will be used to connect the cutting disc to the motor. At the next stage, vertical posts are attached to the channel, which are secured with bolts.

Now we need to weld another frame. It is made individually - for the specific electric motor that will be used in your machine. When choosing an electric motor, look towards asynchronous motors, as they are more reliable and durable. There is one more point here: the greater the power, the smoother the disk will operate.

Installation of equipment on the frame

Frame made of profile pipes

Now you need to connect the working shaft to the electric motor with your own hands. How this will be done is not important, if there are instructions on the drawing, then follow them. If the installation is done correctly, the equipment should operate correctly and reliably.

One more point: if you cannot make any part yourself, then contact a turner for help. He will be able to make you the correct pulley for the belt or flanges for fastening.

It is best to secure the engine to the frame using ordinary bolts and nuts; attach the control panel and a box with an electrical circuit and a switch to the frame next to it.

The channel on which the cutting element is attached must be spring-loaded so that as soon as you release it, it returns to its original position. The most convenient way to secure the spring is with a clamp and bolts.

Pay special attention to the electrical component. There must be an emergency stop button for the machine and a starting chain. In this case, the electric motor must be connected to electricity not directly, but through a box and automatic machine. Switching on and starting the electric motor will be provided by a three-pole starting machine, and the shutdown button is also powered through it.

When completing the final installation with your own hands, do not forget about the protective casing that will protect your eyes from flying sparks.

Making a machine based on a regular grinder

You can also build a cutting machine with your own hands from an ordinary grinder. For example, you have a good, reliable Makita grinder, and you don’t yet need a full-fledged machine, since you will use it from time to time. In this case, just like in the previous version, you need to weld the frame and bed with your own hands, and make a moving part from a pipe or channel to install the grinder.

Cutting machine from an angle grinder Next, you will have to develop a mount for your specific angle grinder. The moving part is also spring-loaded, the technology here is similar.

When making such a machine, do not forget that the grinder has such a thing as a reverse blow. This happens when the abrasive disc gets stuck in the workpiece and the grinder shoots back. In this case, fragments of the disk fly in all directions - this can seriously injure the person who is working. Therefore, when building equipment, pay attention to the protective casing if it is not on the grinder.

Collapsible machine from a grinder

Stationary frame-table for attaching an angle grinder

Now let's look at another way to make a metal cutting machine from a grinder with your own hands. The benefit of this design is that the machine is dismountable and portable. The tool you will need here is the same as for making a full-fledged machine, which we talked about above.

The drawing will depend on the model of the specific grinder.

The first thing you need to know about such a machine is that it is made on the basis of two frames located on the same axis. Here the lower frame is made in the form of a movable clamp and angle, and the mount for the grinder is made to move along a vertical line.

The spring is also present here - it is needed to return the feed mechanism to its original position. Using a welding machine, you can secure a ruler with a special limiter.

A similar machine is started from a starting pedal, which is connected to the network using a low-voltage relay. Having assembled all the parts, the functionality of the structure is checked for Idling. If everything works normally, no mechanisms rub against each other, then such a machine will serve you for a long time.

Considering that you can install various discs on an angle grinder, do not forget about the characteristics of the materials that you plan to cut. And, most importantly, never forget about safety precautions when working with metal-cutting equipment.

Video: Homemade cutting machine from an angle grinder

promtu.ru

Metal cutting machine

I have long wanted to build an abrasive cutting machine for cutting metal in my workshop. Cutting metal with a grinder is not always convenient. The grinder copes well with cutting sheet steel, but cutting off the corner exactly and profile pipes using an angle grinder takes a long time and is not always convenient. It is necessary to mark on all sides and cut the workpiece on one side. Cutting is done on the ground in a bent position, holding the workpiece with your foot. Your back gets tired and sparks fly in all directions. And cut straight round pipe even more difficult and longer. It is more convenient to do this on a metal cutting machine, when there is no need to bend over, and the workpiece is securely and safely secured in the machine. It is very convenient to use such a machine to make a canopy from cellular polycarbonate or automatic gates. The machine was made from “what was at hand.” I tell and show you what I got, and you make your own adjustments and make the machine even better from “what is at hand” at your disposal. I do not consider it advisable to describe the entire manufacturing process in detail; I will only focus on the important (in my opinion) points. The manufacturing process must be performed in the following order: Manufacturing the shaft on which the cutting disc and drive pulley will be installed. Assembling the entire assembly and installing it on the pendulum (I call the pendulum the upper, movable part of the machine on which the cutting disk and motor are installed). Engine installation. Connecting the motor to the cutting disc shaft with a drive belt. Manufacturing of protective covers for the cutting disc and drive belt. Manufacturing the pendulum mounting shaft Manufacturing of a machine frame with a device for securing the workpiece, a spark arrester, preparation for installing electrical... Installing the pendulum on the frame. Wiring. Test run. Adjustment and debugging. I made the machine in a different sequence and was faced with constant alterations and adjustments, which caused the process to drag on. If I decided to make a machine now, I would do everything in this order. Before starting to make the cutting machine, I studied the experiences of other people, from which I realized that: The motor must be installed at least 3 kW. if the cutting disc is 400 mm. The disk speed must be at least 3000 per minute. It is more convenient to place the disc on the shaft on the right, and the drive pulleys on the left; this will not allow the nut securing the cutting disc to turn loose during operation. bearings for the cutting disc shaft are suitable for both 205 and 204 (I used 205) I installed a 3-phase motor, since I have a 380V voltage in my workshop. If your voltage is 220 V, in this case you will have to install starting capacitors; there is a lot of information on how to do this on the Internet. Next, look at the photographs of the manufacturing process. Protective cover rises to replace the used disk with a new one. To do this, you need to unscrew just one M8 bolt from above. Possibility of adjusting the tilt of the rocker using metal plates. I did not install bearings on this shaft, but simply drilled holes for lubrication on top and plugged them with M6 bolts. I borrowed the vice for clamping the workpiece from an old factory-made cutting machine, but I had to modify it a little. In this vise, the clamping screw nut can be divided into two halves, which is very convenient when installing and removing the workpiece. There is no need to create a return mechanism; just change the alignment of the rocker shaft. Spark arrester. 97 percent of all sparks fall into a removable container. Using a stop bolt (bottom), you can adjust the maximum angle of inclination. How to calculate the required pulley diameter. We will assume that the cutting disc should rotate at a speed of 3000 rpm. The discs contain information about the maximum permissible rotation speed of 4400 rpm. So you decide for yourself at what speed your disk will rotate, the main thing is that it should not exceed 4400 rpm. To calculate pulley diameters you need to know: engine speed cutting disc shaft rotation speed Calculation example: Our engine rotates at a speed of 1500 rpm. The cutting disc should rotate at a speed of 3000 rpm. We have a pulley for the cutting disc shaft with a diameter of 65 mm. What kind of shaft should be on the engine? We calculate the length of the perimeter of the existing shaft: we multiply the number Pi (3.14) by the diameter. 3.14 x 65mm = 204.1 mm (shaft perimeter length). We multiply the resulting number by the required shaft speed: 204.1 mm x 3000 rpm = 612,300 mm/min. we divide what we got by the engine speed: 612,300 mm/min / 1500 rpm = 408.2 mm (perimeter of the engine pulley) divide the result by the number Pi: ​​408.2 mm / 3.14 = 130 mm we need a pulley of this size in order to spin the cutting shaft at a speed of 3000 rpm. Do you have pulleys of other diameters available? You only have a suitable pulley for the engine and you need to select a pulley for the cutting disc shaft You don't have pulleys yet and are planning to buy or make them. How to calculate the length of the drive belt? The following data will be required for the calculation: drive pulley radius driven pulley radius distance between pulley centers. Calculation example. We have two pulleys with a diameter of 65mm and 130mm, respectively, their radii are 32.5mm and 65mm. The distance between their centers is variable (in order to tension the drive belt); for an example of calculation, let’s take the length between centers of 500 mm. We count half the circumference of each pulley in millimeters and add to the resulting number two distances from their centers (since the belt passes from one pulley to another and returns back to the first). 32.5mm x 3.14 (Pi) = 102.05mm (half the circumference of the first pulley) 65mm x 3.14 = 204.1mm (circumference of the second pulley) 102.05 + 204.1 + 500 + 500 = 1306 mm (required drive belt length). For a more accurate calculation, you need to take the minimum and maximum length distances between centers, choose something in between that suits you. This is how the cutting machine turned out! Do the same. Do it even better. Good luck to you! Observe safety precautions when making it and operation!

factoryhand.ru

Do-it-yourself cutting machine: design, diagram, manufacturing | Construction portal

Working with a cutting tool, for example, a grinder, many craftsmen understand how much easier it is to cut metal using a simple machine - both the work is more convenient and the cut line is ideal. But when looking at the prices for a cutting machine for metal, even the most primitive used one, there is a desire to make something like this device yourself. There are several ways to make a cutting machine with your own hands, for example, using a grinder or a disc. All designs have their disadvantages or obvious advantages.

Use of cutting machines in everyday life

When working with metal, it is impossible to do without welding, cutting, grinding and other types of processing. The ability to have the simplest machines for woodworking and metal on your farm is a huge help to the home craftsman. In places where it is difficult to reach to carry out work, for example, cutting metal staircase or change something in the design of the attic, you will need a grinder or a circular saw. And cutting equal pieces of reinforcement, rods, small pipes and all kinds of metal workpieces is much easier to do on the working surface of the machine.

The same cutting tank can be used for other purposes to cut aluminum, plastic and others. synthetic materials. However, it is not recommended to use metal cutting machines for woodworking purposes. Considering the small size of a household metal-cutting machine and the general simplicity of this design, it will not be difficult to place it on your estate.

To operate the machine, you will need a well-lit area in the yard or garage, an outlet and a flat floor surface. And if it is no longer needed, it can always be taken to the workshop, pantry or utility room until the next use on the farm. Some designs of homemade machines can be assembled and dismantled, the frame or base of the structure will remain intact.

A homemade cutting machine can also not only be used at home, but also rented out in order to recoup the costs of its production - in a word, this is a very profitable device.

Classification of machines

Structurally everything metal cutting machines combine the engine with the transmission, the cutting disc and the working surface of the machine. There are drawings for a cutting machine on most sites dedicated to various homemade products. Knowing the basic principles of operation of this device, it is easy to make your own adjustments in order to use the materials and mechanisms that are already on the farm.

1. The power of the motor used depends on the expected performance, and it is important to decide on this before making a cutting machine. Most ready-made cutting machines have quite high power - up to 2000 W. Although a machine for domestic use may have smaller parameters, you should not forget that the metal is the same everywhere.

2. To maintain the power of the engine on which the machine will operate, it is important to choose a suitable kinematic transmission method. The most common are belt and friction friction transmission, each method has its own advantages. Gear transmission is gear, worm, chain, but the latter option is the most popular. Belt drive produces the least noise and is most often used on homemade machines, but for more precise machines it is not suitable due to the likelihood of the belt slipping. However, with any machine design, it is important to remember to comply with safety precautions.

3. Even homemade machine It is advisable to equip it with a vice - to ensure guaranteed retention of the material being processed. Carbide disc or abrasive wheel– the choice is up to the master, depending on what is at hand, as well as on the most frequently performed work.

4. The metal cutting angle parameters can vary from 45° to 90°, but usually cutting is done at a right angle. Not every homemade machine has this advantage.

5.The diameter of the disk determines the height of the piece of metal being cut, but these parameters can be changed. For example, wide thin-walled pipe You can rotate it when cutting, but it is difficult to secure it with a vice. Mark volumetric metal structure on the working surface of the machine, sometimes it can also be problematic. Cutting machines, in most cases, have a working diameter of up to 400 mm.

6. The total productivity of a manual machine for precise cutting of metal largely depends on the speed of rotation of the disk. The high speed of the machine directly affects the quality of cutting.

7. The weight and dimensions of a homemade machine are formed depending on the material general design, which it is advisable to equip the legs with vibration supports.

8. The type of cutting machine also depends on the feed of the cutting tool - pendulum, with bottom or front feed. The disc is fed from above using a pendulum feed.

9. A homemade machine can have 2 cutting heads or one, respectively, there are single-head and double-head options.

The abrasive cutting machine is designed for cutting metal reinforcement, rods, profiles, I-beams, pipes of different diameters, solid parts and profiles at different angles. Works with an abrasive wheel.

A band cutting machine or band saw operates on the principle of a closed metal strip moving on pulleys.

At home, the easiest way is to build a cutting disc machine for metal. There are several ways to make a cutting machine with your own hands, but the most understandable will be the most simplest method.

The manufacturing process of a machine based on a cutting disc

To work you will need:

• steel corner,
• channel,
• drill,
• welding machine,
• electric motor,
• bearing pair,
• starting circuit,
• switch,
• coil,
• wooden shield or steel sheet for the work surface,
• box to ensure the operation of the electrical circuit.

1. After preparing all the tools, make a frame or a general frame of suitable dimensions, for example, from angle No. 25. The parts of the structure are measured according to the drawing on a cutting machine and cut with a grinder, then welding begins. The finished frame can be placed on vibration-supported legs, which will facilitate the operation of the machine. It is easier to make the legs from the same profile or small diameter tubes.

2. Channel No. 10 is welded to the resulting table, which acts as a guide axis; it will become the basis of the structure for attaching the cutting part of the machine and connecting it to the motor. Next, the main parts are attached to the channel, including two vertical posts secured with bolts.

3. Next, you need to weld another frame from the profiles - this is the base for mounting the electric motor and the main cutting disk. On the other side of the frame, an electric motor with a power of about 1.5-2 kW is fixed. Asynchronous motors are considered the most durable and reliable. The motor will need to be powered from a 3-phase network. We remind you that a higher power engine will provide a more even cut and good speed of metal cutting work.

4. Shaft mounting method and general principle its connection to the structure is not important. A threading machine, when properly ensuring the supply of revolutions from the electric motor to the rotating shaft, must work reliably. The V-belt will help provide this. Some work can be ordered from a turner (shaft with supports, belt pulley and disk flanges). It is advisable to make the flange projection with a diameter of 32 mm.

5. Next, the support bearings are mounted in the sockets of the upper frame plates on the channel. Bolts and nuts can be used to secure the motor and shaft. Ensuring the operation of the electrical circuit is in a ready-made box with a switch, which is attached to the bottom of the frame.

6. The connection of the racks with a shaft with a diameter of 12 mm is made using a sleeve. To prevent it from slipping, the sleeve and shaft are connected with the smallest gap during a sliding fit. A rocker arm from the channel is welded onto the bushing so that its arm is in a ratio of 1:3.

7. You will need to install a rigid spring near the engine - to ensure return, it will even work from an expander. The springs and chains should be securely secured with bolts.

8. The electric motor is installed on the side of the smaller section of the rocker arm, and the shaft on the larger side. A belt drive will ensure the movement of the shaft.

9. An emergency stop button and a starting circuit are required, while the engine must be connected through a box and a three-pole circuit breaker, and the stop button leads to a direct connection to the network. Connecting the machine will be provided by a three-pole starter that starts the electric motor.

10. Be aware of the sparks that will fly from the disk - provide it with a casing. The work is first checked at idle, and only after making sure that the design is reliable, you can try cutting soft metal, for example, aluminum, in order to correct all inaccuracies. work surface the structures can be made of metal or wood and covered with thick plywood; if necessary for work, secure them with a vice.

The manufacturing process of a machine based on a grinder

There are several ways to make a metal cutting machine with your own hands - there are several on this topic good videos.

First way. The simplest device is a frame made of pipe, which will also serve as a comfortable handle. It is attached by welding on one side cross bar, which should have holes for attaching the grinder. The movable shaft will be attached to this base on a piece of angle, the same part can be attached to the floor of the garage or to the desktop. And on the other hand, it is attached to a spring, with the help of which the machine structure can return to its original position. If you attach the grinder correctly, the device will help you cut metal more accurately, freeing up one hand.

Don’t forget about the back impact of the grinder, when the tool is thrown back if the abrasive disc jams. And abrasive fragments from disc destruction can cause serious injury. An angle grinder attached to the machine with a closed casing minimizes such consequences. However simplest design does not make it possible to perform high-precision cutting, for example, when you need to cut small pieces of steel rod that require further adjustment.

The second way to transform an angle grinder into a cutting machine for metal work. This machine can be made collapsible.

To work you will need:

• welding machine,
• drill,
• steel corner,
• profiled pipe,
• channel,
• spring,
• relay,
• identical bearings,
• pedal,
• bolts,
• wooden board or steel sheet for the work surface.

1. A preliminary drawing or sketch is required, where all dimensions and necessary details. Ready-made drawings for a metal cutting machine are available on the Internet, but you will still have to make your own adjustments using what is already available on the farm. An easy sketch does not require precise measurements; it is enough to observe the proportions and have an accurate idea of ​​each structural element. And remember that you will have to change the frame under different sizes working disk of the grinder.

2. Two frames on a common axis are the basis of the simplest machine frame, and it is better to weld them from metal. On the lower part it is necessary to weld the fastening, which will consist of a movable clamp and a clamping angle. The part on which the angle grinder will be attached must be made to move vertically relative to the bottom, like a pendulum. You cannot do without a spring; it is needed to return to the starting position. Additionally, weld a ruler with a limiter for accurate measurements.

3. The start of operation of such a machine will be ensured by a start pedal (button), connected through a low-voltage relay, supplying voltage to the angle grinder. After switching on, the design must be checked at idle speed. If the circle does not touch the casing and rotates freely, then you can use the design in practice - a homemade machine for cutting metal is ready.

4. This design can be collapsible, and other removable disks can be installed on the grinder. When working with other materials, be aware of the characteristics of the materials when cutting them. Remember safety precautions and precautions when performing metal work.

TOP 6 drawings will help you make a cutting machine from an angle grinder with your own hands without errors and extra costs. Answers to frequently asked questions, recommendations.

TEST:

Is it possible to make a homemade cross-cutting machine from an angle grinder: a verification test with answers based on the materials presented

1. What switches are installed for emergency stop of the machine?

a) manual;

b) hand and foot.

1. Which angle grinders are suitable for creating a cutting machine?

a) pneumatic and electric;

b) battery-powered.

1. Minimum power of the electric motor of an angle grinder for a cutting machine from an angle grinder:

1. What machines can be made based on angle grinders?

a) trimming, cutting;

b) grinding, milling, sharpening.

1. Where can you place the grinder in the cutting machine?

a) above the tabletop;

b) under the tabletop.

1. The correct option is b). Foot switches are more convenient because they operate quickly.
2. Theoretically, there is enough power in all three options. In practice, a) - electric and pneumatic models are used. A battery is not needed for a stationary machine. For a pneumatic drive, you will have to purchase a compressor of appropriate capacity.
3. 900 W or more. The correction is made if it is intended to process workpieces made of relatively soft materials, or at high speed.
4. Both options are correct. A powerful grinder is suitable for creating various machines at the household and semi-professional level.
5. Two mounting options are allowed. Experts prefer the top one.

Bulgarian with an electric drive they perform many different work operations. To reduce labor costs with a simultaneous increase in accuracy, it is used as the basis for the machine.

"Bulgarian"– a common name for an angle grinder (angle grinder). By changing the disk, this universal device can be converted for cutting and performing other work operations.

Bulgarian women

How to make a cutting machine step by step with drawings: 4 reasons in favor of implementing the project

In order not to doubt the correctness of the decision made, study the following facts:

1. without reliable fastening, the workpieces vibrate, increasing the risk of damage to the disk;
2. heavy tools are difficult to manipulate with high precision while maintaining perpendicularity cut;
3. difficulties increase when processing thick products, when creating a large batch of similar parts;
4. Using both hands significantly increases the likelihood of injury.

A high-quality machine is necessary to solve the noted problems and improve productivity. It is created as follows algorithm:

• clarify the purpose and scope of work;
• study drawings of factory analogues and homemade products, choose the appropriate option;
• compose a set of design documentation with a list of necessary purchases;
• carry out assembly according to the approved plan with performance testing.

TOP 6 drawings with explanations for making a homemade metal edger

Typical circular saw It’s not difficult to create if you attach an angle grinder under the work table with a slot. It is necessary to consider a guide system for high precision movement of workpieces.

Look at picture No. 1 to see what a typical one looks like edger. Here the angle grinder is mounted on a movable hinge, which somewhat complicates the design. This scheme has several advantages:

• simple and reliable fastening of the workpiece;
• the significant weight of the upper part will help to use less effort when cutting workpieces;
• manual if necessary electric tool dismantled to perform work operations as normal.

Such a power frame is assembled from standard steel corners, square pipes. Welded joints are more durable. But it is also possible to create a prefabricated structure using screws and nuts.

Such a project can be used as an example for producing high-quality edger on metal. Equipped with wheels makes it easy to move heavy products.

For your information! In other racks it is necessary to install screw supports. With their help, unevenness in the floor covering is compensated.

Look at the picture for an example of a machine for processing wood This technique is suitable for cutting large workpieces. It is necessary to choose a grinder with sufficient power so that it is enough to work with large-diameter discs. A load is secured on the reverse arm of the lever (instead of an electric motor, as in the drawing). The weight and mounting location are selected in accordance with personal requirements and the characteristics of a particular design.

This machine can be converted to be mounted at the bottom Angle grinder. If it is expected longitudinal sawing wood, such engineering solution will be optimal.

Look at Picture No. 6. You can use it to make a set of drawings with your own hands. It is recommended to pay attention to spring, which raises the working node to its original state. Rotary table with measuring devices will help create a machine with increased tolerance requirements.

In the manufacture of this part of the machine, thick metal. This solution increases cost and weight, but extends service life, increases reliability, improves fastening of hinged elements and processing accuracy.

Converting an angle grinder into a machine step by step: 10 assembly stages, electrical diagram for drawings

For self-creation machine must be selected design, appropriate to existing skills and capabilities. The easiest way is to assemble a machine from blanks created according to drawings in a specialized metalworking workshop. Otherwise, you will have to master welding technologies and purchase the necessary equipment.

Below is a step-by-step algorithm self-assembly with useful comments:

1. After approval of the project parameters, the necessary materials, workpieces, tools and replacement attachments are purchased. The shopping list is determined based on the prepared set of design documentation. Compliance with current standards is not required in this case. However, all important details must be included, as in the examples above.
2. Cutting blanks for power frame. The table is made from sheet steel with a thickness of at least 5 mm.
3. A transverse shaft is welded to the pendulum arm. When creating this unit, the perpendicularity of the parts is carefully controlled.
4. For fastening angle grinder A “P” shaped grip is suitable. A hole for bolts is made in its side parts. With these fasteners, the hand tool is rigidly attached to the machine bed. Choose a fairly strong part of the grinder body.
5. Additional fixation is provided using a metal clamp. All of the above mounts are made rigid to improve accuracy.
6. The swivel bearings are pressed in. Instead of standard factory-made units, steel pipes with thick walls of suitable internal diameter are used.
7. The assembled units are fixed on the axis of two sides.
8. The pendulum is attached to the platform by welding. To avoid damaging the bearings, it is recommended to limit the temperature increase. To cool, use a cloth soaked in water.
9. Weld a block with a mount for an angle grinder. Installed in place angle grinder, safety devices, return spring.
10. They check the quality of the assembly, the reliability of the fastenings, and the functionality of the pendulum. Connect the machine, check the functionality first at idle and then in operating mode. The groove in the table is cut with a disk of appropriate width.

Look at Picture No. 8. Here is an electrical diagram for the drawings that improves the protection of equipment from overheating. It will also be useful for quick emergency shutdowns. One or more buttons for breaking the corresponding circuit are installed in a convenient place in the machine body. Foot operated switches are also used.

Machine reinforcement and other operator protection

Reliable power frame – the basis of security. Additionally, they cover moving parts and prevent unauthorized persons from accessing the work area. When processing parts, goggles, masks, mittens, and other personal protective equipment are used.

In addition to reliably strengthening the machine for protection The operator is served by a certain location of the grinder. For safety and to prevent damage to clothing, it is installed so that the sheaf of sparks during operation is directed in the opposite direction from the person.

All 5 options for homemade grinder machines for various purposes

The drive of tools in this category is highly powerful. A high-quality grinder is small in size, durable, and resistant to high workloads. Some models provide speed control. Modern angle grinder as standard, they are equipped with overheating protection. Such products - good basis for the manufacture of homemade machines for various functional purposes.

Grinder lathe

The standard design is used here. The only great one node– a device for transmitting forces to the spindle. A gearbox is needed to regulate the speed and torque within the appropriate range.

Homemade wood milling machine with your own hands, other types of equipment

For your information! This device can be attached to the electric motor shaft after dismantling the standard gearbox.

Look at Picture No. 12 shows how you can assemble a full-fledged sawing/circular machine from available materials in 15-20 minutes. With its help, it is easier to ensure precise processing of wooden blanks compared to using hand power tools.

3 other machines: sharpening machine, for sharpening chains and cutting bricks

Here, potentially hazardous areas are protected from damage by sparks using strips of foil. Temporary, but inexpensive and fast solution practical problem.

VERY DANGEROUS! In any case, we must not forget about the intended purpose of the equipment. If you are making a homemade metal cutting machine, you should consider strengthening the structure. Processing of plastic and wooden workpieces is carried out with less stress.

It’s also important to know: 4 nuances for choosing the right grinder suitable for a sawing or circulating machine

angle grinder are produced with drive power from 340 W to 2.5 kW. To increase the torque on the working shaft, gearboxes are used and the speed is increased to 10-12 thousand per minute. Select a model suitable for a specific type of machine. To prevent rapid wear and tear, experts suggest making a small reserve and using equipment with a motor of 0.9 kW or more.

Number of handles and special devices to perform manual operations in in this case does not matter. However, the following will be useful Components And characteristics:

• protection of the motor from dust;
• smooth speed control with automatic maintenance specified level;
• smooth start;
• built-in overload protection.

Do-it-yourself cutting machine for metal and wood from an angle grinder

We make a machine for cutting metal using high-quality equipment: TOP 3 manufacturers of angle grinders

This list contains brands whose equipment has received high ratings from ordinary users and professionals:

• Bosch. It is famous for its reliability and well-thought-out small design elements. A significant limitation is the high cost even in the basic configuration.
• Hitachi They were initially expensive. But these days, part of the production has been moved to China, which has reduced costs. Some models do not have automatic speed stabilization under load.
• Makita— Reasonable combination of price and quality. All new high power models are equipped with effective overload protection, which extends the actual service life.

How to avoid 4 mistakes during operation of grinding/surface grinding and other machines

So that the machine performs its tasks for a long time functions The following simple rules must be followed:

• Do not increase the load more than planned.
• Use suitable replacement tips as specified in the manufacturers' official instructions.
• Remove dirt promptly to avoid deteriorating the air cooling mechanism.
• Support ideal condition electrical insulation, functionality of protective devices.

How to make a very precise machine with high tolerance requirements and other answers to 5 frequently asked questions

1. How to make a machine with increased tolerance requirements?

Dampers to reduce noise and reduce vibrations are not used in the attachment points of angle grinders, so as not to impair accuracy. All moving components are created with the expectation of maintaining geometry over a long service life.

1. What material is the platform made of?

Processing wood is easier than processing metal, so tables and many other parts can be made from this material.

1. Is it necessary to use a grinder of 1.5 kW or more?

Increasing power consumption is not always justified. An exact calculation is made taking into account the required number of revolutions/torque.

1. What parts can be damaged by increasing the frequency of the working shaft?

Too high a processing speed can damage polymer and other workpieces.

1. Do I need to wear safety glasses when processing workpieces using a machine?

To carry out work safely, it is imperative to use personal protective equipment, even when directing the flow of sparks away from you.