Automobile sheet metal part welding positioning machining method

Abstract

The application discloses a welding positioning machining method for automobile sheet metal parts and relates to the technical field of automobile machining. The application comprises the following steps: S1, clamping and hoisting the frame pipes to be welded through the connecting pieces in the workshop; and S2, aligning the parts to be welded of the two frame pipes to be welded through the connecting pieces. The frame pipes are hoisted through the connecting pieces, so that the frame pipes have a certain distance from the ground. In use, the height of the frame pipes can be adjusted conveniently, so that the frame pipes are suitable for operators with different heights. Then, the connecting pieces are aligned with each other, so that the frame pipes to be welded are aligned and welded. When welding at one position is completed, the frame pipes are rotated through the cooperation of the connecting pieces, so that the operators can conveniently weld other positions of the frame pipes. The welding of the frame pipes is more convenient, the welding positioning of the automobile sheet metal parts is more accurate, and the welding quality is improved.

Description

Technical Field

[0001] This application relates to the field of automotive processing technology, specifically to a method for welding and positioning automotive sheet metal parts. Background Technology

[0002] Cars play a significant role in daily life and are increasingly favored by people. As people's demand for cars grows, they will eventually become an essential part of people's lives.

[0003] In automobile manufacturing, the chassis is one of the most important sheet metal components, which is formed by welding together multiple tubing materials.

[0004] In the prior art, when welding a vehicle frame, the parts are aligned with each other, fixed with a fixture, and then welded. The existing fixtures are fixed on the ground or other working surfaces, and their height is relatively fixed. Workers of different heights have different adaptability to the fixtures. Moreover, when the fixtures are relatively fixed, it is more troublesome to weld the bottom of the workpiece. This application provides a welding positioning processing method for automotive sheet metal parts to improve this problem. Summary of the Invention

[0005] The purpose of this application is to address the problem in the prior art that, when welding a vehicle frame, the parts are aligned with each other and then fixed with a fixture before welding. Existing fixtures are fixed to a working surface such as the ground at a relatively fixed height, which makes them unsuitable for workers of different heights. Furthermore, the relatively fixed fixtures make welding the bottom of the workpiece cumbersome. This application provides a welding positioning and processing method for automotive sheet metal parts.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] The welding and positioning processing method for automotive sheet metal parts includes the following steps:

[0008] S1. Clamp and lift the chassis tubing to be welded using the connectors inside the factory.

[0009] S2. Align the parts of the two frame tubes that need to be welded using the connector;

[0010] S3. While aligning, the frame tubes are brought close together and then welded by bringing the connectors closer together until they touch.

[0011] S4. After the tubing is welded, the frame tubing is rotated by the connector to weld the unwelded parts.

[0012] S5, after welding, the connection between the connecting piece and the pipe is disconnected, and the welding part is polished.

[0013] Further, the connecting piece in step S1 is installed in the factory building by the electric hoist, and the height of the electric hoist in the factory building is changed during installation.

[0014] Further, the connecting piece in step S1 includes a mounting plate, a clamping piece is mounted on the mounting plate, the clamping piece is connected with the electric hoist, the clamping piece is used to clamp the frame pipe, a movable piece is slidably mounted on the clamping piece, the movable piece makes the pipe slide along the axis of the movable piece in an arc shape, and alignment structures are mounted on two adjacent mounting plates.

[0015] Further, an arc-shaped groove is formed in the mounting plate, the clamping piece includes a clamping plate slidably mounted in the arc-shaped groove, the clamping plate is located on both sides of the mounting plate, the height of the arc-shaped groove near one end of the alignment structure is higher than the height of the other end, and a plurality of electric push rods are mounted on the clamping plate, the electric push rods are used to clamp the frame pipe.

[0016] Further, the alignment assembly includes a positioning rod mounted at one end of the mounting plate and a positioning hole formed in the adjacent mounting plate, when the positioning rod is in the positioning hole, the two mounting plates are in the same plane.

[0017] Further, the movable piece includes an arc-shaped plate, the arc-shaped plate is slidably mounted at the telescopic end of the electric push rod, an arc-shaped block is mounted on the arc-shaped plate, a pad is mounted on the telescopic end of the electric push rod, a sliding groove is formed in the pad, and the arc-shaped plate is slidably mounted on the pad through the arc-shaped block.

[0018] Further, limiting plates are mounted at the connection of the two mounting plates, and the two limiting plates have a distance therebetween to form a positioning groove.

[0019] Further, a rubber pad is mounted in the arc-shaped block to make flexible contact with the frame pipe.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. The frame pipe is lifted by the connecting piece, so that it has a certain distance from the ground, which is convenient for adjusting the height of the frame pipe during use, and is suitable for operators of different heights. The connecting pieces are aligned with each other, so that the frame pipes to be welded are aligned and welded. After welding is completed, the frame pipe is rotated by the cooperation of the connecting pieces, so that the operator can conveniently weld other parts of the frame pipe, and the welding of the frame pipe is more convenient.

[0022] 2、The application is hoisted by the electric hoist to the connecting piece, and the height of the connecting piece is adjusted during hoisting, and the electric hoist is more stable when it stops rising, and the waiting time for the connecting piece to stop shaking is reduced during use, and the welding is more convenient.

[0023] 3、The frame pipe is clamped by the clamping piece during use, and is aligned by the alignment structure before welding, and is rotated by the cooperation of the movable piece after welding a part, so that the subsequent part is rotated, so that the operator is more convenient during welding. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the schematic diagram of the automobile sheet metal part welding positioning machining method of the application;

[0025] Figure 2 is the schematic diagram of the connecting piece three-dimensional structure of the application;

[0026] Figure 3 is the connecting piece partial structure explosion drawing of the application;

[0027] Figure 4 is another connecting piece partial structure explosion drawing of the application;

[0028] Figure 5 is still another connecting piece partial structure explosion drawing of the application;

[0029] Reference signs: 1, mounting plate; 2, clamping piece; 201, clamping plate; 202, electric push rod; 3, movable piece; 301, arc plate; 302, arc block; 303, pad block; 304, sliding groove; 4, alignment structure; 401, positioning rod; 402, positioning hole; 5, arc slot; 6, limiting plate; 7, positioning slot; 8, rubber pad. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application.

[0031] As shown in Figure 1 , the automobile sheet metal part welding positioning machining method provided by one embodiment of the application comprises the following steps:

[0032] S1, clamp and hoist the frame pipe to be welded by the connecting piece in the factory building, and after hoisting the frame pipe, make the frame pipe closer to the operator, and adjust the height of the frame pipe to match the height of the operator during welding, so as to reduce the discomfort caused by the operator's long-term adaptation to the installation position of the frame pipe;

[0033] S2, align the two frame pipes to be welded through the connecting piece, align the two frame pipes to be welded through the connecting piece, so that the welding is more accurate when welding, and the possibility of welding error is reduced;

[0034] S3, while aligning, the connecting pieces are close to each other, so that the frame pipes are close to each other and are in contact, and are welded, the connecting pieces are close to each other while being lifted and aligned, so that the two frame pipes are in contact with each other, reducing the possibility of misalignment between the two frame pipes when welding, and increasing the stability between the two frame pipes by contact, reducing the possibility of welding error;

[0035] S4, after welding the pipe part, rotate the frame pipe through the connecting piece to weld the un-welded part, after welding the exposed part of the frame pipe, the frame pipe is rotated along the bearing to expose the un-welded part, and then the part is welded;

[0036] S5, after welding, disconnect the connecting piece from the pipe, and polish the welded part, after welding, polish the welding scar to make it smooth, complete the operation, and facilitate subsequent work;

[0037] Compared with the prior art, the frame pipe is lifted by the connecting piece, so that it has a certain distance from the ground, which is convenient for adjusting the height of the frame pipe during use, and is suitable for operators of different heights, and then the connecting pieces are aligned with each other, so that the frame pipes to be welded are aligned and welded, when one place is welded, the frame pipe is rotated through the cooperation of the connecting piece, so that the operator can weld other places of the frame pipe, which makes it more convenient to weld the frame pipe.

[0038] In some embodiments, the connecting piece in step S1 is installed in the factory building through an electric hoist, and when installing, the height of the electric hoist in the factory building is changed, the electric hoist has the characteristics of stable operation, stable brake and long service life, and when using, the connecting piece is connected with the electric hoist through a steel cable, and the height of the connecting piece and the frame pipe is changed through the electric hoist, so that the position of the frame pipe is suitable for the height of the operator.

[0039] As Figure 1 , Figure 2 and Figure 3As shown in the drawings, in some embodiments, the connecting piece in step S1 includes a mounting plate 1, a clamping piece 2 is mounted on the mounting plate 1, the clamping piece 2 is connected with the electric hoist, the clamping piece 2 is used for clamping the frame pipe, a movable piece 3 is slidingly mounted on the clamping piece 2, the movable piece 3 enables the pipe to slide in an arc shape along the axis direction of the movable piece 3, alignment structures 4 are mounted on two adjacent mounting plates 1, when the alignment structures 4 are connected, the two mounting plates 1 are in the same horizontal plane, in use, the frame pipe is clamped by the clamping piece 2, and then is aligned by the alignment structures 4 and is welded after alignment, when a part is welded, the frame pipe is rotated by cooperation of the movable piece 3, so that the subsequent part is conveniently rotated, and the operator is more convenient when welding.

[0040] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, in some embodiments, an arc-shaped groove 5 is formed in the mounting plate 1, the clamping piece 2 includes a clamping plate 201 slidingly mounted in the arc-shaped groove 5, the clamping plate 201 is located on both sides of the mounting plate 1, the height of the arc-shaped groove 5 near one end of the alignment structure 4 is higher than the height of the other end, a plurality of electric push rods 202 are mounted on the clamping plate 201, the electric push rods 202 are used for clamping the frame pipe, a connecting rod is connected between the clamping plates 201, the connecting rod is connected with the steel cable, and the steel cable is connected with the electric hoist, in use, when the electric hoist pulls the clamping plate 201, the clamping plate 201 slides in the arc-shaped groove 5, so that the clamping plates 201 on the adjacent mounting plates 1 are close to each other, when the mounting plates 1 are lifted, the clamping plates 201 drive the frame pipes to be close to each other and abut, so that the two frame pipes are more closely contacted, and subsequent welding is facilitated, when the frame pipe is clamped, clamping is completed by extension and retraction of the electric push rod 202, when the frame pipe can be clamped, different frame pipes with different diameters can be clamped, and the practicability of the device is improved.

[0041] As shown in the drawings, Figure 3 and Figure 4 As shown in the drawings, in some embodiments, the alignment assembly includes a positioning rod 401 mounted at one end of the mounting plate 1 and a positioning hole 402 formed in the adjacent mounting plate 1, when the positioning rod 401 is in the positioning hole 402, the two mounting plates 1 are in the same plane, when the frame pipes are welded, two frame pipes to be welded are connected by two connecting pieces, one of the mounting plates 1 is provided with the positioning rod 401, and the other mounting plate 1 is provided with the positioning hole 402, the frame pipes are connected with the two mounting plates 1 respectively, then the two mounting plates 1 are connected by the positioning rod 401 and the positioning hole 402, and then the whole is lifted by the electric hoist, so that the frame pipes are kept in alignment when being transported, the subsequent alignment time is reduced, and the welding steps are simplified.

[0042] As shown in the drawings, Figure 5As shown in the drawings, in some embodiments, the moving piece 3 comprises an arc-shaped plate 301 which is slidingly installed at the telescopic end of the electric push rod 202, and an arc-shaped block 302 is installed on the arc-shaped plate 301, and a pad 303 is installed on the telescopic end of the electric push rod 202, and a sliding groove 304 is formed on the pad 303, and the arc-shaped plate 301 is slidingly installed on the pad 303 through the arc-shaped block 302, and in use, the arc-shaped plate 301 cooperates with the telescopic end of the electric push rod 202 to clamp the frame pipe, and after the welding of part of the frame pipe is completed, the frame pipe is rotated to make the arc-shaped plate 301 slide in the sliding groove 304 through the arc-shaped block 302, and the sliding groove 304 is shaped as Figure 3 As shown in the drawings, and further makes the frame pipe rotate to expose the part not welded, which is convenient for welding, and the sliding groove 304 is formed on the pad 303, which reduces the influence on the performance of the electric push rod 202 and increases the practicability of the device.

[0043] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, in some embodiments, the connecting part of the two mounting plates 1 is provided with a limiting plate 6, and the two limiting plates 6 have a distance therebetween to form a positioning groove 7, and the connecting part of the two mounting plates 1 is the connecting part of the two frame pipes, and welding is performed at this part, and the positioning groove 7 is formed between the two limiting plates 6 to compress the space around the welding part, so that the operator can better position when welding at this part, and the limiting plate 6 can provide a support point for the welding gun, which is more convenient for welding.

[0044] As shown in the drawings, Figure 3 and Figure 5 As shown in the drawings, in some embodiments, the arc-shaped block 302 is internally provided with a rubber pad 8, and the rubber pad 8 is in flexible contact with the frame pipe, and the rubber pad 8 is in flexible contact with the frame pipe, which reduces the damage to the frame pipe when clamping the frame pipe, reduces the loss of materials, and increases the practicability of the device.

[0045] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for welding and positioning a sheet metal part of an automobile, characterized in that, The method comprises the following steps: S1, clamping and lifting the frame pipes to be welded through the connecting pieces in the factory building; S2, aligning the parts to be welded of the two frame pipes to be welded through the connecting pieces; S3, while aligning, making the frame pipes close to each other through the mutual approach of the connecting pieces, and welding; S4, after the pipe part is welded, rotating the frame pipes through the connecting pieces to weld the unwelded part; S5, after welding, disconnecting the connecting pieces from the pipes, and polishing the welded part; The connecting pieces in step S1 are installed in the factory building through an electric hoist, and the height of the electric hoist in the factory building is changed during installation. The connecting pieces in step S1 include mounting plates, clamping pieces are installed on the mounting plates, the clamping pieces are connected with the electric hoist, the clamping pieces are used to clamp the frame pipes, movable pieces are slidingly installed on the clamping pieces, alignment structures are installed on two adjacent mounting plates, the two mounting plates are in the same horizontal plane when the alignment structures are connected, arc-shaped grooves are formed in the mounting plates, the clamping pieces include clamping plates slidingly installed in the arc-shaped grooves, the clamping plates are located on both sides of the mounting plates, the height of the end of the arc-shaped groove close to the alignment structure is higher than the height of the other end, a plurality of electric push rods are installed on the clamping plates, the electric push rods are used to clamp the frame pipes, the alignment assembly includes a positioning rod installed at one end of the mounting plate and a positioning hole formed in the adjacent mounting plate, the two mounting plates are in the same plane when the positioning rod is in the positioning hole, the movable piece includes an arc-shaped plate slidingly installed at the extension end of the electric push rod, an arc-shaped block is installed on the arc-shaped plate, a pad is installed on the extension end of the electric push rod, a sliding groove is formed in the pad, and the arc-shaped plate is slidingly installed on the pad through the arc-shaped block. Limiting plates are installed at the connection of the two mounting plates, and the limiting plates have a distance therebetween.

2. The method of claim 1, wherein A rubber pad is installed in the arc-shaped block to make flexible contact with the frame pipes.

3. The method of claim 2, wherein ​

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