CN114227106A - Welding assembly tool and method for batch production of cylindrical part outer parts - Google Patents
Welding assembly tool and method for batch production of cylindrical part outer parts Download PDFInfo
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- CN114227106A CN114227106A CN202111567246.3A CN202111567246A CN114227106A CN 114227106 A CN114227106 A CN 114227106A CN 202111567246 A CN202111567246 A CN 202111567246A CN 114227106 A CN114227106 A CN 114227106A
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- assembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Abstract
The invention relates to a welding assembly tool and a welding assembly method for batch production of cylinder parts, belonging to the field of welding assembly of cylinder parts; the bottom surface, the semi-circular arc surface, the horizontal step surface, the vertical step surface, the upper end circular arc groove and the middle circular arc groove of the assembly fixture are respectively a reference 1 attached to the mounting platform, a reference 2 attached to the outer peripheral surface of the cylindrical part, a positioning reference 3 attached to the lower end surface of the rectangular body bump on the outer part special-shaped block, a positioning reference 4 positioned on one side wall surface of the rectangular body bump on the outer part special-shaped block, a peripheral surface positioning reference 5 attached to the second short cylinder of the outer part and a peripheral surface positioning reference 6 attached to the first short cylinder of the outer part. When the metaler assembles the outer part, only the reference of the outer part is overlapped with the reference of the cylinder and the reference of the assembly fixture, and the corresponding position of the cambered surface of the outer part and the cylinder is attached. The product installed through the assembly fixture 4 has good consistency of the installation position of the outer part, is convenient for machining and automatic processing, and lays a good foundation for batch production.
Description
Technical Field
The invention belongs to the field of welding and assembling of cylinder parts, and particularly relates to a welding and assembling tool and method for batch production of cylinder parts.
Background
In the field of welding and assembling of the cylindrical outer part, the assembly position of the outer part is determined by drawing lines by a fitter, then the cylindrical part and the outer part are assembled by a metaler and a welder, and the outer part is assembled by the welder through tack welding. The assembly work is completely dependent on the human handling ability. Therefore, high requirements are put on the ability of people, and the labor intensity of workers is improved. Because the subjectivity of people is too high, the stability of the product quality can not be ensured. Is not beneficial to the mass production of the product.
The technical route of the existing welding and assembling process for the cylinder outer part is as follows: scribing → assembly → tack welding. The prior art method is realized by the following steps: firstly, drawing an outer part mounting position line on a cylindrical part 3 by a fitter according to a process reference, and drawing a mounting butt line on the outer part according to the process reference; a metaler assembles the cylinder member 3 according to the outer member mounting position line and the outer member mounting butt line, measures the size of the cylinder member, and ensures that the outer member positioning size meets the process requirement; and (4) performing outer part positioning welding by a welder under the cooperation of a metaler to complete the welding assembly of the outer part. The process technology realizes the control requirement of welding and assembling the cylinder outer part and can meet the design requirement. The technology has the following defects: alignment and measurement of installation size are needed in the assembly process of a metaler, installers are different, the size of the installation position of the outer part is controlled differently, and the installation size of the outer part of a product is inconsistent, so that the machining reference needs to be frequently adjusted in the subsequent machining process, and the assembly process is not suitable for machining in a batch production line.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides a welding assembly tool and a method for batch production of the external parts of the cylindrical parts, which are used for realizing fixed-point welding of two short cylinders and two special-shaped blocks on the peripheral surfaces of the cylindrical parts, wherein the axial directions of the two short cylinders are vertical to the axial direction of the cylindrical parts and are respectively welded at the upper ends and the middle parts of the two short cylinders along the generatrices of the cylindrical parts; the main part of dysmorphism piece is the arc, and its inner wall is identical with drum spare outer peripheral face, and the outer wall is provided with the cuboid lug perpendicularly, and two dysmorphism piece symmetric welds in the upper end both sides of drum spare, and drum spare central line and short cylinder central line place plane are crossed to the plane of symmetry, and the arc inner wall of dysmorphism piece welds on drum spare outer peripheral face. The tool design can improve the assembly quality of products, ensure the consistency of the installation of the external parts and provide a beneficial technical basis for subsequent batch machining.
The technical scheme of the invention is as follows: the utility model provides a be used for batch production drum spare outer part welding assembly fixture which characterized in that: the assembly tool is of an arc plate structure, the inner wall surface of the assembly tool is a semi-arc surface with the radius consistent with that of the outer peripheral surface of the cylindrical part, and the semi-arc surface is used as a reference 2 for attaching the outer peripheral surface of the cylindrical part; the bottom end surface of the cylinder is a plane vertical to the central axis of the cylinder and is used as a reference 1 for jointing with the mounting platform;
step structures are symmetrically arranged on two sides of the inner arc surface at the upper end of the assembly fixture, a horizontal step surface is located in the radial direction of the cylindrical part and serves as a positioning reference 3 for the lower end surface of the rectangular body bump on the special-shaped block of the outer part, and a vertical step surface is perpendicular to the symmetrical planes of the step structures on the two sides and serves as a positioning reference 4 for positioning one side wall surface of the rectangular body bump on the special-shaped block of the outer part;
an arc groove is formed in the center of the top end face of the assembling tool along the radial direction and serves as a circumferential surface positioning reference 5 of a second short cylinder of the outer part; the upper end of the outer part is provided with a through groove, and the center of the bottom of the through groove is provided with an arc groove along the radial direction to be used as the circumferential surface positioning reference 6 of the first short cylinder of the outer part.
The further technical scheme of the invention is as follows: the outer wall surface of the assembly tool is parallel to the central shaft of the cylindrical part, and the two side wall surfaces are parallel to each other and vertical to the outer wall surface; the vertical step surfaces at two sides of the inner cambered surface are parallel to the outer wall surface.
The further technical scheme of the invention is as follows: the outer wall surface and the two side wall surfaces of the assembling tool form 45-degree chamfers for enhancing the rigidity of the tool.
The further technical scheme of the invention is as follows: the radiuses of the two arc grooves of the assembly tool are both 140 degrees.
The further technical scheme of the invention is as follows: and arc grooves with the radius larger than that of the arc grooves are formed in the wall surfaces of the two ends of the arc grooves of the assembling tool, so that the short cylinders can be conveniently welded.
The further technical scheme of the invention is as follows: the width of the step structure of the assembly fixture is larger than the height of the rectangular body bump on the outer part special-shaped block.
The further technical scheme of the invention is as follows: the through groove at the upper end of the assembly fixture is a rectangular through groove, and the bottom surface of the through groove is parallel to the bottom surface of the assembly fixture.
A use method of a welding and assembling tool for batch production of cylindrical part outer parts is characterized by comprising the following specific steps:
the method comprises the following steps: processing 6 references of the assembly tool according to the size of the outer part and the welding position;
step two: the positions of the first short cylinder, the second short cylinder and the special-shaped block which are welded on the peripheral surface of the cylindrical piece are cleaned, so that the metallic luster is achieved, and no foreign matter is generated;
step three: placing the cylindrical part and the assembly tool on the mounting platform, so that the bottom surface of the cylindrical part, the bottom surface of the assembly tool and the mounting platform are superposed at the reference 1;
step four: superposing the peripheral surface of the cylindrical part and the semi-circular arc surface of the assembly tool at the reference 2;
step five: the peripheral surface of the first short cylinder is superposed with a reference 6 on an assembly tool, the peripheral surface of the second short cylinder is superposed with a reference 5 on the assembly tool, and the lower end surface and the side wall of the special-shaped block are respectively superposed with a reference 3 and a reference 4 on the assembly tool; welding surfaces on the first short cylinder, the second short cylinder and the special-shaped block are attached to each welding position on the cylindrical piece;
step six: and (5) the metaler and the welder perform positioning welding on the outer parts to obtain the welded cylindrical parts.
Advantageous effects
The invention has the beneficial effects that: the invention simplifies the process flow by using the assembly tool 4. In the background art, the marking is easy to fail due to manual operation, and the marking errors of different operators are different. In addition, the scribing precision is low, generally 0.2-0.5 mm, and the precision of manually installing the external part is generally about 0.4 mm. This assembly fixture 4 adopts machine tool machining, can guarantee positioning accuracy 0.1 mm. Meanwhile, after the assembly tool 4 is machined, the positioning size is determined, and the consistency of the installation position is guaranteed. Therefore, the consistency of the mounting position of the outer part of the product mounted by the assembly tool 4 is good, the machining and automatic processing are convenient, and a good foundation is laid for batch production. When the metaler assembles the outer part, the datum of the outer part is only required to be superposed with the datum of the cylinder and the datum of the assembly fixture 4, and the cambered surface of the outer part is attached to the corresponding position of the cylinder. The assembly precision is guaranteed by the assembly fixture 4, and the process that the position line of the outer part on the outer part and the position line of the outer part on the cylinder are manually positioned and overlapped is omitted. Meanwhile, a checking link after scribing and a checking link after assembling an external part are also omitted, the installation time is greatly saved, the assembly precision is greatly improved, and the assembly and welding quality of the product is improved. The method reduces labor intensity of workers. The defects of the prior art in the background data are overcome. In actual production, originally, only a part of live ordinary metalers who have good eyesight and high skill can be competent. The clothes can be loaded in one day originally, and can be loaded in one hour now. The working efficiency is greatly improved.
The upper through groove of the assembly tool 4 has the functions of avoiding the spatial position required by a welding gun during welding and enabling the center of gravity of the assembly tool 4 to be close to the reference 1 so that the assembly tool 4 is stably kept on the platform 6. The appearance structure design of the assembly tool 4 is to keep the tool with certain rigidity and has small deformation in the tool machining process.
The arc grooves on the inner sides of the reference 5 and the reference 6 of the assembly tool are positions required by a welding gun to avoid welding of a tungsten electrode. And meanwhile, when the metaler installs the first short cylinder and the second short cylinder, the metaler can observe whether the bottom arcs of the first short cylinder and the second short cylinder are well attached to the outer cambered surface of the cylinder part. The reason for setting the arc groove outside the reference 6 is that the wall thickness of the assembly tool 4 is thick, the length of the first short cylinder is short, and the arc groove outside the reference 6 is convenient for a metaler to operate by hand.
Drawings
FIG. 1 illustrates a right side view of an assembly method;
FIG. 2 is a front view of an assembly method;
FIG. 3 illustrates a left side view of an assembly method;
FIG. 4 is a front view of the assembly fixture;
FIG. 5 is a top view of the assembly fixture;
FIG. 6 is a cross-sectional view of an assembly fixture;
FIG. 7 is a partial enlarged view of the first assembling tool;
FIG. 8 is a second partial enlarged view of the assembly fixture;
FIG. 9 is a schematic view of an assembly fixture datum;
FIG. 10 is a three-dimensional schematic view of an assembly fixture;
fig. 11 is a three-dimensional schematic view of the mounting surface of the shaped block;
fig. 12 is a three-dimensional schematic diagram of a shaped block;
description of reference numerals: 1. first short cylinder, 2, the short cylinder of second, 3, drum spare, 4, assembly fixture, 5, dysmorphism piece, 6, mounting platform.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1-12, a welding and assembling tool 4 for batch production of cylindrical parts and outer parts is of an arc plate structure, wherein the inner wall surface of the welding and assembling tool is a semi-arc surface with the radius consistent with the radius of the outer peripheral surface of the cylindrical part 3 and is used as a reference 2 for attaching to the outer peripheral surface of the cylindrical part 3; the outer wall surface is parallel to the central axis of the cylindrical member 3, and the two side wall surfaces are parallel to each other and perpendicular to the outer wall surface; the vertical step surfaces at two sides of the inner cambered surface are parallel to the outer wall surface; and the outer wall surface and the two side wall surfaces form 45-degree chamfers for enhancing the rigidity of the tool.
The bottom end face of the assembling tool 4 is a plane perpendicular to the central axis of the cylindrical part 3 and serves as a reference 1 attached to the mounting platform 6;
step structures are symmetrically arranged on two sides of the inner arc surface at the upper end of the assembly fixture 4, a horizontal step surface is located in the radial direction of the cylindrical part 3 and serves as a positioning reference 3 for the lower end surface of the rectangular body bump on the outer part special-shaped block 5, and a vertical step surface is perpendicular to the symmetrical planes of the step structures on the two sides and serves as a positioning reference 4 for positioning one side wall surface of the rectangular body bump on the outer part special-shaped block 5; the width of the ladder structure is larger than the height of the rectangular body lug on the outer part special-shaped block.
An arc groove is formed in the center of the top end face of the assembling tool 4 in the radial direction and serves as a circumferential surface positioning reference 5 of the second short cylinder 2 of the outer part; the upper end of the first short cylinder 1 is provided with a through groove, and the center of the bottom of the through groove is provided with an arc groove along the radial direction to be used as the circumferential surface positioning reference 6 of the first short cylinder 1 of the outer part; the radiuses of the two arc grooves are both 140 degrees, and the wall surfaces at the two ends of the two arc grooves are both provided with arc grooves with radiuses larger than that of the arc grooves, so that the welding of the two short cylinders is facilitated.
The through groove at the upper end of the assembly fixture is a rectangular through groove, and the bottom surface of the through groove is parallel to the bottom surface of the assembly fixture.
The use method of the welding and assembling tool for the exterior parts of the cylindrical parts in batch comprises the following specific steps:
the method comprises the following steps: processing 6 references of the assembly tool 4 according to the size of the outer part and the welding position;
step two: the positions of a first short cylinder 1, a second short cylinder 2 and a special-shaped block 5 which are welded on the peripheral surface of the cylindrical piece are cleaned, so that metallic luster is achieved, and foreign matters are avoided;
step three: placing the cylindrical part 3 and the assembly tool 4 on the installation platform 6, so that the bottom surface of the cylindrical part 3, the bottom surface of the assembly tool 4 and the installation platform 6 are superposed at the reference 1;
step four: superposing the peripheral surface of the cylindrical part 3 and the semi-circular arc surface of the assembly tool 4 at the reference 2;
step five: the outer peripheral surface of the first short cylinder 1 is overlapped with a reference 6 on an assembly tool 4, the outer peripheral surface of the second short cylinder 2 is overlapped with a reference 5 on the assembly tool 4, and the lower end surface and the side wall of the special-shaped block 5 are respectively overlapped with a reference 3 and a reference 4 on the assembly tool 4; the welding surfaces of the first short cylinder 1, the second short cylinder 2 and the special-shaped block 5 are attached to the welding positions on the cylindrical piece 3;
step six: and (5) the metaler and the welder perform positioning welding on the outer parts to obtain the welded cylindrical parts.
The embodiment is a welding assembly method for the outer parts of the cylinder parts in batch production. The first short cylinder 1 is a cylinder with the diameter of 8mm and the length of 17mm, one end attached to the cylinder member 3 is an arc surface, and the diameter of the cylinder member 3 is 180 mm. The second short cylinder 2 is a cylinder with the diameter of 9mm and the length of 22mm, one end attached to the cylinder is an arc surface, and the diameter of the step part of the cylinder part 3 is 182 mm. The cambered surface that cylinder spare 3 and first short cylinder 1 laminating, diameter 180 mm. The diameter of the cambered surface (the outer circumferential surface of the cylindrical piece is jointed with the inner cambered surface of the special-shaped block) which is jointed with the cylindrical piece 3 and the special-shaped block 5 is 182 mm. The cylinder 3 has a height of 416 mm.
Referring to fig. 11 and 12, the dimension of the special-shaped block 5 and the dimension of the assembling tool 4 are 43mm long, 8mm wide and 16mm high.
Referring to fig. 5, the assembly fixture 4 has an arc with a diameter of 8mm at a position 182 on the center line of the top view of the assembly fixture, which is 140 degrees from the reference 1, and is the installation position of the first short cylinder 1. The assembly fixture 4 is provided with an arc with a diameter of 9mm and a 140-degree angle at a position 208mm away from the mounting position of the first short cylinder 1 on the central line of the top view of the assembly fixture, and the arc is the mounting position of the second short cylinder 2. The plane width of the datum 4 at the position 350.5mm away from the datum 1 of the assembly fixture 4 is 24mm, and the length of the datum 4 is 36 mm. The assembly fixture 4 is 4mm wide and 24mm long on the plane of the datum 3 at the position 350.5mm away from the datum 1. These two planes are the reference for mounting the profiled block 5. The through groove in the upper portion of the assembly fixture 4 has the functions of avoiding the space position required by the welding gun during welding, enabling the center of gravity of the assembly fixture 4 to be close to the reference 1, and enabling the assembly fixture 4 to be stably used on the platform 6. The dimensions 240, 110 and 45 degrees at the outer shape of the assembly tool 4 are selected to ensure that the tool keeps certain rigidity and has small deformation in the tool machining process.
The implementation method comprises the following steps: firstly, cleaning the mounting positions of a first short cylinder 1, a second short cylinder 2 and a special-shaped block 5 on a cylinder piece 3 to see metallic luster and have no foreign matters; secondly, placing the cylindrical part 3 and the assembling tool 4 on the mounting platform 6, and enabling the cylindrical part 3, the assembling tool 4 and the mounting platform 6 to be superposed at the same reference 1; thirdly, the cylindrical part 3 and the assembly tool 4 are superposed at the same datum 2; and fourthly, superposing the corresponding reference 5, 6, 3 and 4 on the first short cylinder, the second short cylinder and the special-shaped block with the reference 5, 6, 3 and 4 on the assembly tool 4, and attaching one end of the cambered surface on the first short cylinder, the second short cylinder and the special-shaped block with the cylindrical part of the cylindrical part 3. Fifthly, the metaler and the welder perform positioning welding.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (8)
1. The utility model provides a be used for batch production drum spare outer part welding assembly fixture which characterized in that: the assembly tool is of an arc plate structure, the inner wall surface of the assembly tool is a semi-arc surface with the radius consistent with that of the outer peripheral surface of the cylindrical part, and the semi-arc surface is used as a reference 2 for attaching the outer peripheral surface of the cylindrical part; the bottom end surface of the cylinder is a plane vertical to the central axis of the cylinder and is used as a reference 1 for jointing with the mounting platform;
step structures are symmetrically arranged on two sides of the inner arc surface at the upper end of the assembly fixture, a horizontal step surface is located in the radial direction of the cylindrical part and serves as a positioning reference 3 for the lower end surface of the rectangular body bump on the special-shaped block of the outer part, and a vertical step surface is perpendicular to the symmetrical planes of the step structures on the two sides and serves as a positioning reference 4 for positioning one side wall surface of the rectangular body bump on the special-shaped block of the outer part;
an arc groove is formed in the center of the top end face of the assembling tool along the radial direction and serves as a circumferential surface positioning reference 5 of a second short cylinder of the outer part; the upper end of the outer part is provided with a through groove, and the center of the bottom of the through groove is provided with an arc groove along the radial direction to be used as the circumferential surface positioning reference 6 of the first short cylinder of the outer part.
2. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: the outer wall surface of the assembly tool is parallel to the central shaft of the cylindrical part, and the two side wall surfaces are parallel to each other and vertical to the outer wall surface; the vertical step surfaces at two sides of the inner cambered surface are parallel to the outer wall surface.
3. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: the outer wall surface and the two side wall surfaces of the assembling tool form 45-degree chamfers for enhancing the rigidity of the tool.
4. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: the radiuses of the two arc grooves of the assembly tool are both 140 degrees.
5. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: and arc grooves with the radius larger than that of the arc grooves are formed in the wall surfaces of the two ends of the arc grooves of the assembling tool, so that the short cylinders can be conveniently welded.
6. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: the width of the step structure of the assembly fixture is larger than the height of the rectangular body bump on the outer part special-shaped block.
7. The welding assembly tooling for the batch production of the cylindrical part outer parts according to claim 1, characterized in that: the through groove at the upper end of the assembly fixture is a rectangular through groove, and the bottom surface of the through groove is parallel to the bottom surface of the assembly fixture.
8. Use method of the welding assembly tool for the batch production of the external parts of the cylindrical parts according to any one of claims 1 to 7, characterized by comprising the following steps:
the method comprises the following steps: processing 6 references of the assembly tool according to the size of the outer part and the welding position;
step two: the positions of the first short cylinder, the second short cylinder and the special-shaped block which are welded on the peripheral surface of the cylindrical piece are cleaned, so that the metallic luster is achieved, and no foreign matter is generated;
step three: placing the cylindrical part and the assembly tool on the mounting platform, so that the bottom surface of the cylindrical part, the bottom surface of the assembly tool and the mounting platform are superposed at the reference 1;
step four: superposing the peripheral surface of the cylindrical part and the semi-circular arc surface of the assembly tool at the reference 2;
step five: the peripheral surface of the first short cylinder is superposed with a reference 6 on an assembly tool, the peripheral surface of the second short cylinder is superposed with a reference 5 on the assembly tool, and the lower end surface and the side wall of the special-shaped block are respectively superposed with a reference 3 and a reference 4 on the assembly tool; welding surfaces on the first short cylinder, the second short cylinder and the special-shaped block are attached to each welding position on the cylindrical piece;
step six: and (5) the metaler and the welder perform positioning welding on the outer parts to obtain the welded cylindrical parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111567246.3A CN114227106A (en) | 2021-12-20 | 2021-12-20 | Welding assembly tool and method for batch production of cylindrical part outer parts |
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| CN202111567246.3A CN114227106A (en) | 2021-12-20 | 2021-12-20 | Welding assembly tool and method for batch production of cylindrical part outer parts |
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| CN215034982U (en) * | 2021-05-31 | 2021-12-07 | 欧斯迦德(徐州)机械制造有限公司 | Splicing and spot welding tool for barrel bracket of animal feather dehydrator |
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