General information about drawings. All about chamfers and bevelers Flat chamfer size

Used for technological, technical, as well as decorative and ergonomic purposes.

Applications

Chamfers are often used in various structural elements to simplify subsequent installation and reduce the risk of injury from sharp edges of parts. So, for example, in mechanical engineering, the chamfer of a fastening hole is often a conical surface, a cutting edge formed by the end surface and the actual cylindrical surface of the hole. The bevel angle is selected based on design purposes, but is often set to 45°. For an interference fit, the recommended bevel angle on the shaft and sleeve is 10°.

In welding, a chamfer or edge groove serves to create a weld pool between two thick metal sheets, thereby bypassing the maximum thickness limitation of the weld area and welding these sheets to form a high-quality joint. The angle and shape of the chamfer surface is selected from a number of technological and design parameters; chamfers with a curved surface are often used. The size of the chamfer leg is selected according to GOST 10948-64 from the following series of numbers: 0.10; (0.12); 0.16; (0.20); 0.25; (0.30); 0.40; (0.50), 0.60; (0.80); 1.0; (1,2); 1.6; (2.0); 2.5; (3.0); 4.0; (5.0); 6.0; (8.0); 10; (12); 16; (20) and up to 250 mm. Sizes without brackets are preferred.

Manufacturing methods

Notes

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Synonyms:

See what "Chamfer" is in other dictionaries:

chamfer- and, f. face f., facette f. The beveled portion of a sharp edge or edge on metal or wooden products. BAS 1. Gradually we moved from only a profile image to a toy with different densities planks, with separate beveled cuts, which... ... Historical Dictionary Gallicisms of the Russian language

Edge, slice; side, edge Dictionary of Russian synonyms. chamfer noun, number of synonyms: 2 edge (84) side... Synonym dictionary

CHAMBER, chamfer, female (see face) (special). The sharpened side of the blade. An ordinary carpenter's axe, double-sided, has two chamfers (its blade is sharpened on both sides). Dictionary Ushakova. D.N. Ushakov. 1935 1940 … Ushakov's Explanatory Dictionary

CHAMBER, and, female (special) The sharpened side of the blade, the beveled edge of cardboard, glass. Ozhegov's explanatory dictionary. S.I. Ozhegov, N.Yu. Shvedova. 1949 1992 … Ozhegov's Explanatory Dictionary

Psk. bowl, cup. Dahl's Explanatory Dictionary. IN AND. Dahl. 1863 1866 … Dahl's Explanatory Dictionary

chamfer- flat - Topics oil and gas industry Synonyms for flat EN flat ... Technical Translator's Guide

Chamfer- the edge of a cardboard side made of thick (more than 2 mm thick) cardboard beveled at an angle of approximately 45°. The F. imposition is used when producing large-volume publications with improved design, since the F. improves the quality of binding... Publishing dictionary-reference book

Chamfer- – a plane formed by cutting a sharp edge of an edge at an angle of 45°, less often 30° (remove the chamfer). Designed to protect the ribs from knocking down and give the product more beautiful view. [Shepelev A. M. Carpentry work in rural house.… … Encyclopedia of terms, definitions and explanations of building materials

CHAMFER- beveled part of the surface of the part at the end or at the transition points; “to chamfer” means to cut the corner of a beam, slab, etc... Big Polytechnic Encyclopedia

- (French facette) a beveled part of a sharp edge or edge on metal, wood, cardboard, etc. products. New dictionary foreign words. by EdwART, 2009. chamfer [Dictionary of foreign words of the Russian language

A chamfer is a surface formed by a bevel end edge material.

The chamfer drawing is carried out on the basis of GOST 2.109-73 - a unified system of design documentation (ESKD).

You can download this simple drawing for free to use for any purpose. For example, for placement on a nameplate or sticker.

How to draw a drawing:

You can draw a drawing either on a sheet of paper or using specialized programs. No special engineering knowledge is required to complete simple sketch drawings.

A sketch drawing is a drawing made “by hand”, observing the approximate proportions of the depicted object and containing sufficient data for the manufacture of the product.

The design drawing with all the technological data for manufacturing can only be completed by a qualified engineer.

To designate in the drawing, you must perform the following operations:

1. Draw an image;
2. Add dimensions (see example);
3. Specify for production (read more about technical requirements below in the article).

It is most convenient to draw on a computer. Subsequently, the drawing can be printed on paper using a printer or plotter. There are many specialized programs for drawing on a computer. Both paid and free.

Drawing example:

This image shows how simple and quickly drawing can be done using computer programs.

List of programs for drawing on a computer:

1. KOMPAS-3D;
2. AutoCAD;
3. NanoCAD;
4. FreeCAD;
5. QCAD.

Having studied the principles of drawing in one of the programs, it is not difficult to switch to working in another program. Drawing methods in any program are not fundamentally different from each other. We can say that they are identical and differ from each other only in convenience and the presence of additional functions.

Technical requirements:

For the drawing, it is necessary to indicate dimensions sufficient for manufacturing, maximum deviations and roughness.

The technical requirements for the drawing should indicate:

1) Manufacturing and control method, if they are the only ones that guarantee the required quality of the product;
2) Indicate a specific technological method that guarantees that certain technical requirements for the product are met.

A little theory:

A drawing is a projection image of a product or its element, one of the types of design documents containing data for the production and operation of the product.

A drawing is not a drawing. The drawing is made according to the dimensions and scale of the real product (structure) or part of the product. Therefore, to carry out drawing work, the work of an engineer with sufficient experience in producing drawing work is necessary (however, to beautifully display a product for booklets, it is quite possible that you will need the services of an artist who has an artistic view of the product or part of it).

A drawing is a constructive image with necessary and sufficient information about dimensions, manufacturing method and operation. You can download the drawing presented on this page for free.

A drawing is an artistic image on a plane created by means of graphics (brush, pencil or specialized program).

A drawing can be either an independent document or part of a product (structure) and technical requirements related to surfaces processed together. Instructions for joint processing are placed on all drawings involved in the joint processing of products.

For more information on drawings, technical requirements for design and indication of manufacturing methods, see GOST 2.109-73. See the list of standards for the development of design documentation.

Information for ordering drawings:

In our design organization You can create any product (both parts and assemblies), which will include a chamfer drawing as an element of the design documentation of the product as a whole. Our design engineers will develop documentation in the shortest possible time in strict accordance with your technical specifications.

Fillet, Chamfer, Break or Merge objects

Constructing mates

With a fillet, you can connect two objects using an arc that is tangent to the objects and has a specific radius.

Internal corner is called conjugation, and external corner- rounding; You can create both corners using the FILLET command.

The following objects can be paired:

Ellipses and elliptical arcs

Segments

Polylines

Splines

You can round all the corners of a polyline using the FILLET command.

NOTE. Filleting hatch boundaries that consist of segments leads to a loss of associativity. If the hatch boundary is specified by a polyline, associativity is preserved.

If both objects to be connected lie on the same layer, the connecting arc is also drawn on the same layer. Otherwise, it is built on the current layer. The layer defines other object properties, including color and linetype.

Using the "Multiple" option, you can pair several objects without leaving the command.

Setting the fillet radius

The conjugation radius is the radius of the arc connecting the mating objects. Changing the radius only affects mates made after this, leaving existing ones unchanged. If the radius is set to 0, then the mating objects are simply trimmed or extended to the intersection point without constructing a mating arc.

You can hold down the SHIFT key while selecting objects to change the current fillet radius value to 0.

Trimming and extending mating objects

Using the "With trimming" option, you can select a conjugation mode in which objects are either trimmed/extended to the point of intersection with the mating arc, or remain unchanged.

Specifying mate points

There may be several possible mates, and the program makes their selection based on the position of the pointing points. Compare the locations of the sets of objects and the resulting mates in the drawings.

Pairing Lines with Polylines

To connect lines to polylines, each line or its extension must intersect one of the linear segments of the polyline. When Trim mode is enabled, the mated objects and the fillet arc are merged to form a new polyline.

Fillet along the entire polyline

You can create or cancel the construction of mates along the entire polyline.

If the fillet radius is non-zero, the FILLE command draws fillet arcs at each of the vertices formed by the intersection of linear segments, if these segments have a length sufficient for the fillet radius.

If two converging linear segments of a polyline are separated by an arc, the FILLET command replaces that arc with a fillet arc.

If the fillet radius is 0, then filler arcs are not drawn. If two line segments of a polyline are separated by one arc segment, the FILLET command removes the arc and extends the line segments until they intersect.

Pairing Parallel Lines

It is possible to pair parallel segments, straight lines and rays. The current fillet radius is temporarily adjusted to create an arc that is tangent to both objects and placed in a plane common to both objects.

The first selected object must be a line or ray, and the second must be a line, line, or ray. The mating arc is drawn as shown in the drawing.

Mate objects with non-zero height in 3D space

In AutoCAD, you can mate any objects located in the same plane and having extrusion directions that are not parallel to the Z axis of the current UCS. The FILLET command determines the extrusion direction for a fillet arc in 3D space close to the direction of the Z axis of the current UCS.

Setting the fillet radius

2. Enter d (radius).

3. Enter the fillet radius.

4. Select objects to pair.

Editing

PAIRING

To connect two segments

1. Select the Edit? Pair menu.

2. Select the first segment.

3. Select the second segment.

Editing

PAIRING

Constructing a mate without trimming

1. Select the Edit? Pair menu.

2. If necessary, enter t (Trim). Enter b (No trimming).

3. Select objects to pair.

Editing

PAIRING

To create mates along the entire polyline

1. Select the Edit? Pair menu.

2. Enter d (radius).

3. Select a polyline.

Editing

PAIRING

To pair multiple objects

1. Select the Edit? Pair menu.

2. Select a base point.

3. Select the first line or set a parameter and complete the query commands for that parameter. Select the first segment.

4. Select the second segment.

5. Select the first segment to create the next mate, or press ENTER or ESC to complete the command.

Editing

PAIRING

Quick reference

Teams

PAIRING

Round corners and fillet objects

System Variables

FILLETRAD

Saves the value of the current fillet radius

TRIMMODE

Utilities

Keywords for commands

Chamfering

A chamfer joins two objects to meet them at a flat or chamfered corner.

A chamfer connects two objects using a curved line. This is usually how chamfered corners are created.

Can be chamfered

Segments

Polylines

The CHAMBER command can be used to bevel the corners of a polyline with a single command.

NOTE. Chamfering the boundaries of a hatch, which consists of segments, leads to a loss of associativity. If the hatch boundary is specified by a polyline, associativity is preserved.

If both objects to be joined are on the same layer, the chamfer line is also drawn on the same layer. Otherwise, it is built on the current layer. The layer defines other object properties, including color and linetype.

Using the "Multiple" option, you can chamfer several objects without leaving the command.

Specifying chamfers using two linear dimensions

The chamfer length is the distance between the point of real or imaginary intersection of objects and the point to which the object is extended or cut when chamfering. If both chamfer lengths are 0, then the objects are trimmed or extended to their intersection point, and the chamfer line is not drawn. You can hold down the SHIFT key while selecting objects to change the value of the current chamfer distances to 0.

An example is given of setting the length of the first chamfer to 0.5, and the second chamfer to 0.25. After specifying the chamfer lengths, two segments are selected.

Trimming and extending chamfered objects

By default, chamfered objects are trimmed. Cropping can be canceled using the Trim option.

Constructing a chamfer using linear and angular dimensions

To create a chamfer, you can specify the point of intersection of the chamfer with the first selected object and the angle formed by the chamfer line with this object.

In the following example, two lengths are joined by a chamfer. The chamfer starts on the first segment at a distance of 1.5 units from the intersection point of the segments and forms an angle of 30 degrees with it.

Creating chamfers for polylines and their segments

You can select segments of a single polyline for chamfering. They must be either adjacent or separated by one arc segment. If there is an arc segment between the specified segments, as shown in the drawing, then this arc segment is removed and replaced with a chamfer line.

Chamfering along an entire polyline

It is possible to chamfer along the entire polyline, that is, build them at each intersection of its segments. It is recommended to set the same values for both chamfer lengths.

In the following example, both linear dimensions of each chamfer are equal.

When chamfering along an entire polyline, only those segments whose lengths exceed the length of the chamfer are processed. The following drawing shows a polyline where some of the segments were too small to be chamfered.

To create a chamfer along two linear dimensions

2. Enter d (Length).

3. Set the first chamfer length.

4. Set the second chamfer length.

5. Select the sections to be chamfered.

Editing

CHAMFER

To connect two non-parallel sections with a chamfer

1. Select the menu Edit? Chamfer.

2. Select the first segment.

3. Select the second segment.

Editing

CHAMFER

To create a chamfer along linear and angular dimensions

1. Select the menu Edit? Chamfer.

2. Select the first segment.

3. Enter the chamfer length from the joint corner along the first segment.

4. Enter the chamfer angle.

5. Select the first segment. Then select the second segment.

Editing

CHAMFER

To create a chamfer without cutting objects

1. Select the menu Edit? Chamfer.

2. Enter t (Trim Control).

3. Enter n (No Trim)

4. Select the objects to connect.

Editing

CHAMFER

For chamfering along an entire polyline

1. Select the menu Edit? Chamfer.

2. Enter d (radius).

3. Select a polyline.

Along the entire polyline, chamfering occurs using the current method and with the default dimensions.

Editing

CHAMFER

To chamfer multiple objects

1. Select the menu Edit? Chamfer.

2. Select a base point.

The command prompt displays the standard command prompt.

3. Select the first object, or first set the required options, and then select the first object.

4. Select the second segment.

The command prompt returns to the standard command prompt.

5. Select the first segment to create the next chamfer, or press ENTER or ESC to end the command.

Editing

CHAMFER

Quick reference

Teams

CHAMFER

Constructing chamfers at intersections of objects

System Variables

CHAMPHERA

Sets the first chamfer distance when CHAMMODE is set to 0

CHAMFERB

Sets the second chamfer distance when CHAMMODE is set to 0

CHAMFERC

Sets the chamfer length when CHAMMODE is set to 1

CHAMFERD

Sets the chamfer angle when CHAMMODE is set to 1

CHAMMODE

Setting the input method for the CHAMBER command

TRIMMODE

Controls how selected edges are trimmed for chamfers and fillets

Utilities

Keywords for commands

Breaking and joining objects

You can break and merge two objects with a gap or not. You can also create one object by combining several.

Breaking objects

Use the BREAK command to create a gap in an object to form two objects with a gap. The BREAK command is often used to create space for inserting a block or text.

To break an object without creating a gap, specify both break points at the same location. This can be done quickly by entering @0,0 when prompted for the second point.

You can create breaks in most geometric bodies except

Dimensions

Multilines

Regions

Connecting objects

Use the CONNECT command to combine similar objects into one. You can also create closed circles and ellipses from arcs and elliptical arcs. You can connect objects

Elliptical arcs

Segments

Polylines

Splines

The object to which such objects need to be attached is called the source object. The objects that need to be attached must be on the same plane. Additional restrictions for each object type are described in the CONNECT command.

NOTE. When merging two or more arcs (or elliptical arcs), their merging starts from the original elliptical arc in a counterclockwise direction.

Sections

In working drawings, in addition to views, they often show an image called a section.

The section shows only what is directly in the cutting plane. The section located in the drawing, but to the side of the image, is called extended. The section on the drawing image itself will be superimposed.

a - taken out; b - imposed.

Incision is an image of an object mentally dissected by one or more planes.

The section shows what is obtained in the secant plane and located behind it. The figure below shows a part mentally dissected by a plane, and images of the section and section. Unlike a section, a section shows a hole and a groove behind the cutting plane.

On sections and sections, the internal outlines (boundaries) are shown with solid lines, and the surfaces of the part located behind the cutting plane are highlighted by hatching. Sections and sections show holes and indentations.

The figure below contains a drawing of the same disk as in the figure, but instead of a front view, a section is shown. This image allows you to better visualize the disk in the drawing with its invisible contours (holes).

See the picture -

Chamfers- This is a cut corner or edge of a flat or cylindrical part. A chamfer is removed to improve the appearance or blunt the sharp edges of a part.

a - flat; b - cylindrical.

The drawings of parts indicate the number, width and angles of chamfers. If two chamfers have the same angles and dimensions, then the drawing indicates this: 3*45°/2 chamfers. This means that the part has two chamfers, each 3 mm wide, at an angle of 45°.

If there are several chamfers with different angles or different widths on one part, each chamfer is indicated on the drawing.

Questions

Why do the drawings show sections and sections?
What is the difference between a section and a section?
What lines on sections and sections show internal outlines (boundaries)?
Why are chamfers made?
How are chamfers shown in drawings?

“Plumbing”, I.G. Spiridonov,
G.P. Bufetov, V.G. Kopelevich

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A technological map is an instruction for completing a task. Technological maps, drawings, sketches, instruction cards - all this is technical documentation that describes the nature and procedure for completing the task. IN technological maps indicate the sequence of manufacturing parts, processing sketches, the tool used, the type and material of the workpiece. The manufacturing sequence can be detailed or brief. It all depends on the complexity of the part. IN…

Chamfer: what is it and why is it needed?

This is a specially obtained edge on the end surface metal sheet or on the pipe wall, beveled at a certain angle.

Main destination - preparing rolled metal for further welding work.

Why is chamfering necessary?

Processing the ends of sheets or pipe walls is needed for:

Good penetration and reliable connection of welding seams
Reducing welding time
Preventing injury to employees from sharp corners of the product
Simplification of the upcoming installation of the constructed metal structure
To avoid manual sanding of sheet or pipe edges

If chamfering is not performed, then in products whose thickness exceeds 5 mm, the welding seam may come apart over time and the structure will lose strength.

Chamfer angle

Chamfer angle from the edge of a sheet or pipe is selected based on design features product or assigned welding task. As a rule, the standard chamfer angle for metal sheet profiles is 45°, for pipes – 37.5°.

There are three ways to cut an edge from rolled metal:

Y-shaped way;
X-shaped;
J-shaped (another name is “glass” chamfer);
Also, in the technical literature you can find something else letter designation: V, K and U chamfer.

Peculiarities different types chamfers

The most common methods of edge removal in production are the Y-shaped method and the X-shaped one.
For high-precision welding seams (e.g. on products complex design) use a chamfer with a curved surface.
J-shaped chamfer is performed using special automatic chamfers. This method creates a larger weld pool than other methods.

Other types of edge cutting(butt type of connection with a broken edge) is not used so often in production.

Features of the chamfering process

To cut edges on a metal product, special units are used - chamferers, differing in cutting method into three types (air-flame, mechanical and oxygen-gas equipment).

The edge cutting process is as follows:

Using clamps, the chamfer is attached to the edge of the sheet or inside metal pipe.
Next, the required sharpening angle is set.
When the machine is turned on, the cutting head is brought to the workpiece and the chamfer cutting process occurs.
After finishing the work, the cutter returns to its original position.
After chamfering, working surface the product is considered prepared for further welding work.

When cutting a chamfer, a welding container (bath) is formed, where the hot welding composition is collected. A chamfered edge has a certain dullness of about 3-5 mm. When the container is filled with welding compound, the blunted area melts itself. Thanks to this, the required seam tightness is achieved and additional reliability is created.

Edge cutting methods

Currently, two methods of edge removal are used in production: thermal and mechanical.

Mechanical chamfer is considered to be of the highest quality, since this method is performed using special equipment - beveling machines (edge cutters), milling machines, edge splitters and other devices. Advantages this method are as follows:

After chamfering, the product retains its structure and does not lose physical and chemical properties
Mechanical method ensures high tightness and reliability of future welds
Save time.

Thermal method– air-plasma chamfer and gas-flame chamfer. Air-plasma cutting of edges allows you to get appearance chamfer close to the factory (or mechanical chamfer). However, it requires ideal smooth surface sheet or pipes at a certain angle. In many industries, this type of chamfering is the main one due to its efficiency and high speed of processing products. It is performed using special plasma cutting equipment.

Gas-plasma chamfering does not require special conditions implementation and is characterized by low cost. But the quality of the cut is lower than with the mechanical or air-flame method. Often such chamfer cutting requires additional machining. This method is used for artisanal processing of used pipes. Using the thermal method of chamfer cutting (gas-plasma and air-plasma chamfer cutting), due to overheating, a section appears in a metal product with altered physical and chemical properties(thermal influence zone). This negatively affects the tightness and reliability of future welds and the strength of the structure itself.

Mechanical chamfering preserves the properties of the product and does not affect the quality of future welding work. Mechanical chamfering method is a kind of guarantor of processing quality metal products before welding work. The only “disadvantage” of this method is the high cost of the units and the complexity of the work.

You can find out the cost of mechanical bevel removers by calling ☎