Clamp tool for welding automobile parts

Abstract

The utility model discloses a fixture tool for welding automobile parts, which comprises a bottom plate, a first positioning unit, a second positioning unit and a rotating unit, a first linear driving mechanism and a vertical column are arranged on the bottom plate, and an output shaft of the rotating unit is connected with a mounting plate. The first positioning unit and the second positioning unit each comprise a fixed block, at least two movable blocks and at least two second linear driving mechanisms, the movable ends of the two second linear driving mechanisms are connected with the two movable blocks correspondingly, and an inserting groove is formed in the inner side of the fixed block of the first positioning unit. The inner side of the fixing block of the second positioning unit is provided with a protruding block corresponding to the inserting groove, the protruding block can be inserted into the inserting groove in a matched mode, the rotating unit drives the tubular workpieces which are connected to the first positioning unit and the second positioning unit in a sleeving mode to rotate around the axes of the tubular workpieces, and through the arrangement, positioning operation is easy and convenient, efficiency is high, and the tubular workpieces are suitable for workpieces of various shapes and sizes; the universality of the tool is improved, and the structure for driving the two workpieces to rotate synchronously is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production, in particular to a fixture tooling for automobile parts. Background Art

[0002] Welding is used to connect various parts, such as axles, frames, etc., to ensure the structural integrity and strength of the car, which is essential for withstanding the various stresses and vibrations during vehicle operation. Welding plays a vital role in the production process of automotive parts. It is not only a key link in the manufacture of automotive parts and car bodies, but also has a significant impact on the quality, efficiency and cost of automotive products.

[0003] The Chinese utility model patent with announcement number CN220739961U discloses a positioning device for automobile parts production, including a base plate, a mounting plate and a mounting shaft, two mounting plates are arranged at a left and right interval at the upper end of the base plate, a first through hole is provided on the mounting plate in the left and right directions, two mounting shafts are respectively arranged in the first through hole and are rotatably connected to the mounting plate, a mounting assembly for mounting a workpiece is provided at one end of the two mounting shafts close to each other, the two mounting shafts are connected by a transmission assembly, and a rotating assembly for driving the mounting shaft to rotate is provided on one of the mounting plates. The utility model can effectively install and position the workpiece during welding, and the welding angle can be adjusted during welding, so that the staff can be more relaxed when welding without having to adjust their welding position. However, the above technical solution has the following problems:

[0004] 1. Positioning the workpiece by manually tightening multiple second bolts arranged circumferentially one by one is complicated and inefficient;

[0005] 2. The above technical solution realizes the synchronous rotation of two workpieces through a transmission assembly, and the structure is complex;

[0006] 3. The above technical solution is only applicable to tubular workpieces and has poor versatility. Utility Model Content

[0007] The utility model provides a fixture tool for welding automobile parts, which can solve the above technical problems.

[0008] The utility model is realized by the following technical solutions:

[0009] A fixture for welding automobile parts, comprising a base plate, a first positioning unit, a second positioning unit and a rotating unit.

[0010] The bottom plate is symmetrically provided with upright posts;

[0011] At least one of the columns is connected to a first linear drive mechanism for driving it to approach or move away from another column;

[0012] A mounting plate perpendicular to the bottom plate is arranged on the inner side of the column, and the mounting plate is connected to the output shaft of the rotating unit;

[0013] The first positioning unit and the second positioning unit each include a fixed block, at least two moving blocks and at least two second linear drive mechanisms, the two second linear drive mechanisms, the fixed block and the two moving blocks are all arranged on a mounting plate, and the two moving blocks are located on both sides of the fixed block, and the moving ends of the two second linear drive mechanisms are respectively connected to the two moving blocks and are configured to drive the two moving blocks to approach or move away from the fixed block;

[0014] A slot is provided on the inner side of the fixing block of the first positioning unit, and a convex block corresponding to the slot is provided on the inner side of the fixing block of the second positioning unit, and the convex block can be adapted to be inserted in the slot;

[0015] When the protrusion is inserted into the slot, the rotating unit is configured to drive the tubular workpiece respectively sleeved on the first positioning unit and the second positioning unit to rotate around its own axis.

[0016] Furthermore, a tapered portion is provided on one side of the protrusion facing the slot, and an inclined guide groove corresponding to the tapered portion is provided at the entrance of the slot.

[0017] Furthermore, a ball plunger is provided on the inner wall of the slot, and a groove corresponding to the ball plunger is provided on the surface of the protrusion, and the ball head of the ball plunger can slide into the groove.

[0018] Furthermore, the cross section of the slot is in a "convex" shape.

[0019] Furthermore, a plurality of blind holes are arranged on the side of the movable block away from the fixed block, positioning posts are inserted into the blind holes, and springs are arranged between the blind holes and the positioning posts.

[0020] Furthermore, the top of the positioning column is a spherical surface.

[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0022] A fixture for welding automobile parts, comprising a base plate, a first positioning unit, a second positioning unit and a rotating unit. When two tubular workpieces need to be welded, one of the workpieces is inserted into the two moving blocks of the first positioning unit at the same time, and the other workpiece is inserted into the two moving blocks of the second positioning unit at the same time. The second linear drive mechanism drives the two moving blocks away from the fixed block so that the outer surface of the moving block is pressed against the inner wall of the workpiece to fix the workpiece. The first linear drive mechanism drives the column to drive the first positioning unit and the second positioning unit to approach each other until the protrusion is inserted into the slot. At this time, the first positioning unit and the second positioning unit are simultaneously The shaft is connected, and the rotating mechanism drives the mounting plate to rotate, so as to drive the workpieces respectively mounted on the first positioning unit and the second positioning unit to rotate synchronously; when it is necessary to weld a plate-shaped or other workpiece that is not suitable for being mounted on the fixed block and the moving block, the workpiece is placed on the fixed block, and the second linear drive mechanism drives the moving block to approach the fixed block to clamp the workpiece, and the first linear drive mechanism drives the column to drive the workpieces clamped by the first positioning unit and the second positioning unit to approach each other. With this arrangement, the positioning operation is simple and efficient, and it is suitable for workpieces of various shapes and sizes, thereby improving the versatility of the tooling, and the structure of driving the two workpieces to rotate synchronously is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0024] Figure 1 This is a schematic structural diagram of a fixture for welding automobile parts according to an embodiment of the utility model;

[0025] Figure 2 The purpose of the first positioning unit of the embodiment of the utility model;

[0026] Figure 3 This is the purpose of the second positioning unit of the embodiment of the utility model;

[0027] Figure 4 This is a cross-sectional view of the installation of two fixing blocks in an embodiment of the utility model;

[0028] Figure 5 This is a cross-sectional view of a moving block according to an embodiment of the present utility model.

[0029] Marks and corresponding parts names in the attached drawings:

[0030] 10-base plate, 11-column, 111-mounting plate, 112-rotation unit, 12-first linear drive mechanism;

[0031] 20 - second linear drive mechanism, 21 - fixed block, 22 - moving block, 23 - slot, 231 - inclined guide groove, 232 - ball plunger, 24 - bump, 241 - conical portion, 242 - groove, 221 - blind hole, 222 - positioning column, 223 - spring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0033] Example

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A fixture for welding automobile parts comprises a base plate 10, a first positioning unit, a second positioning unit and a rotating unit 112. The base plate 10 is symmetrically provided with columns 11. The inner side of the column 11 is provided with a mounting plate 111 perpendicular to the base plate 10. The mounting plate 111 is connected to the output shaft of the rotating unit 112. At least one column 11 is connected with a first linear drive mechanism 12 for driving it to approach or move away from another column 11. The first linear drive mechanism can be an electric push rod or a ball screw. Preferably, the first linear drive mechanism is a left-handed ball screw, which is arranged on the base plate 10. Slide blocks are respectively connected to the left-handed thread and the right-handed thread of the screw. One slide block is connected to one column 11. When the screw rotates, the two slide blocks drive the two columns 11 to move toward the center or outward at the same speed and distance at the same time, ensuring that the two columns 11 can move synchronously with good centering.

[0035] The first positioning unit and the second positioning unit each include a fixed block 21, at least two moving blocks 22 and at least two second linear drive mechanisms 20. The cross-section of the fixed block 21 can be rectangular or square, and the cross-section of the moving block 22 can be rectangular, square or semicircular. Preferably, the cross-section of the moving block 22 is semicircular. When the workpiece is tubular, the semicircular design enables the outer surface of the moving block 22 to better fit the inner wall of the tubular workpiece, providing uniform and stable support. When the workpiece is plate-shaped or other shaped workpieces, the moving block 22 and the fixed block 21 can also clamp workpieces of other shapes. The outer surface of the moving block 22 can be provided with anti-slip texture or anti-slip layer. The anti-slip texture or anti-slip layer can increase the friction coefficient between the moving block 22 and the workpiece, which helps to prevent the workpiece from sliding or dislocating during rotation, and improves the stability of the workpiece rotating with the moving block 22.

[0036] The fixed block 21, the two moving blocks 22 and the two second linear drive mechanisms 20 are all arranged on the mounting plate 111, and the two moving blocks 22 are located on both sides of the fixed block 21. The moving ends of the two second linear drive mechanisms 20 are respectively connected to the two moving blocks 22, and are configured to drive the two moving blocks 22 close to or away from the fixed block 21. The second linear drive mechanism 20 can be an electric push rod or a cylinder.

[0037] A slot 23 is provided on the inner side of the fixing block 21 of the first positioning unit, and a protrusion 24 corresponding to the slot 23 is provided on the fixing block 21 of the second positioning unit. The protrusion 24 can be adapted to be inserted into the slot 23. For example, a conical portion 241 is provided on the side of the protrusion 24 facing the slot 23, and an inclined guide groove 231 corresponding to the conical portion 241 is provided at the entrance of the slot 23. The inclined guide groove 231 provides a smooth transition for the protrusion 24 to enter the slot 23, making the assembly process simpler and faster.

[0038] When the protrusion 24 is inserted into the slot 23 , the rotating unit 112 is configured to drive the tubular workpiece respectively sleeved on the first positioning unit and the second positioning unit to rotate around its own axis.

[0039] When two tubular workpieces need to be welded, one of the workpieces is inserted into the two moving blocks 22 of the first positioning unit at the same time, and the other workpiece is inserted into the two moving blocks 22 of the second positioning unit at the same time. The second linear drive mechanism 20 drives the two moving blocks 22 away from the fixed block 21 so that the outer surface of the moving block 22 is pressed against the inner wall of the workpiece to fix the workpiece. The first linear drive mechanism drives the column 11 to drive the first positioning unit and the second positioning unit to move closer to each other until the protrusion 24 is inserted into the slot 23. At this time, the first positioning unit is coaxially connected with the second positioning unit, and the rotating mechanism drives the mounting plate 111 to rotate. It drives the workpieces respectively mounted on the first positioning unit and the second positioning unit to rotate synchronously; when it is necessary to weld a plate-shaped or other workpiece that is not suitable for being mounted on the fixed block 21 and the movable block 22, the workpiece is placed on the fixed block 21, and the second linear drive mechanism 20 drives the movable block 22 to approach the fixed block 21 to clamp the workpiece. The first linear drive mechanism drives the column 11 to drive the workpieces clamped by the first positioning unit and the second positioning unit to approach each other. With this arrangement, the positioning operation is simple and efficient, and it is adaptable to workpieces of various shapes and sizes, thereby improving the versatility of the tooling and the structure of driving the two workpieces to rotate synchronously is simple.

[0040] In another embodiment, a ball plunger 232 is provided on the inner wall of the slot 23, and a groove 242 corresponding to the ball plunger 232 is provided on the surface of the protrusion 24. The ball head of the ball plunger 232 can slide into the groove 242. During the process of inserting the protrusion 24 into the slot 23, when the steel ball slides into the groove 242, it indicates that it is plugged in place. When the protrusion 24 is inserted into the slot 23 with the groove 242, the cooperation between the ball plunger 232 and the groove 242 can produce a self-locking effect and achieve precise positioning.

[0041] In another embodiment, the cross-section of the slot 23 is in the shape of a "convex" character, and the cross-section of the protrusion 24 corresponding to the slot 23 is also in the shape of a "convex" character. The cooperation between the protrusion 24 and the slot 23 of this shape can effectively prevent relative rotation between the two positioning shafts.

[0042] In another embodiment, a plurality of blind holes 221 are provided on the side of the movable block 22 away from the fixed block 21, and a positioning column 222 is inserted in the blind hole 221, and a spring 223 is provided between the blind hole 221 and the positioning column 222. The tubular workpiece is inserted into the fixed block 21 and the two movable blocks 22 at the same time, and the inner wall of the workpiece squeezes the positioning column 222. The positioning column 222 moves toward the bottom of the blind hole 221 to squeeze the spring 223. The pre-tightening force of the spring 223 pushes the positioning column 222 to move toward the inner wall of the workpiece, so that the positioning column 222 presses against the inner wall of the workpiece to position the workpiece. The positioning column 222 can adaptively adjust its position to fit the inner wall of the workpiece with different diameters or different shapes, thereby providing higher flexibility and applicability.

[0043] In another embodiment, the top of the positioning column 222 is a spherical surface. When the workpiece is inserted into the positioning shaft, the spherical surface provides a smooth guiding surface, and the workpiece can slide into place along the positioning shaft more easily. The smooth spherical surface can also reduce damage to the inner wall of the workpiece.

[0044] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixture for welding automobile parts, comprising a base plate, characterized in that: It also includes a first positioning unit, a second positioning unit and a rotating unit. The bottom plate is symmetrically provided with upright posts; At least one of the columns is connected to a first linear drive mechanism for driving it to approach or move away from another column; A mounting plate perpendicular to the bottom plate is disposed on the inner side of the column, and the mounting plate is connected to the output shaft of the rotating unit; The first positioning unit and the second positioning unit each include a fixed block, at least two moving blocks and at least two second linear drive mechanisms, the two second linear drive mechanisms, the fixed block and the two moving blocks are all arranged on a mounting plate, and the two moving blocks are located on both sides of the fixed block, and the moving ends of the two second linear drive mechanisms are respectively connected to the two moving blocks, and are configured to drive the two moving blocks to approach or move away from the fixed block; A slot is provided on the inner side of the fixing block of the first positioning unit, and a convex block corresponding to the slot is provided on the inner side of the fixing block of the second positioning unit, and the convex block can be adapted to be inserted in the slot; When the protrusion is inserted into the slot, the rotating unit is configured to drive the tubular workpiece respectively sleeved on the first positioning unit and the second positioning unit to rotate around its own axis.

2. A fixture for welding automobile parts according to claim 1, characterized in that: A tapered portion is arranged on one side of the protrusion facing the slot, and an inclined guide groove corresponding to the tapered portion is arranged at the entrance of the slot.

3. The fixture for welding automobile parts according to claim 1, characterized in that: The inner wall of the slot is provided with a ball plunger, the surface of the protrusion is provided with a groove corresponding to the ball plunger, and the ball head of the ball plunger can slide into the groove.

4. The fixture for welding automobile parts according to claim 1, characterized in that: The cross section of the slot is a "convex" shape.

5. The fixture for welding automobile parts according to claim 1, characterized in that: A plurality of blind holes are arranged on the side of the moving block away from the fixed block, positioning posts are inserted into the blind holes, and springs are arranged between the blind holes and the positioning posts.

6. The fixture for welding automobile parts according to claim 5, characterized in that: The top of the positioning column is a spherical surface.

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