Steering gear welding clamp

Abstract

The utility model provides a steering gear welding clamp, belongs to the technical field of steering gear machining, and solves the problem that a steering gear shell and a side end plate of the steering gear shell are not accurately fixed when an existing welding clamp is used. The steering gear welding clamp comprises a bottom plate, a positioning seat is fixedly connected to the bottom plate, a first mounting plate and a second mounting plate are fixedly connected to the bottom plate, a first air cylinder is fixedly connected to the bottom plate through a supporting frame, an expansion positioning mechanism is arranged in the positioning seat, a supporting plate is fixedly connected to the first mounting plate, and a connecting block is slidably connected to the supporting plate; the output end of the first air cylinder is fixedly connected with a connecting block, an adjusting mechanism is arranged on the connecting block, the right side of the second mounting plate is fixedly connected with a second air cylinder, the output end of the second air cylinder is fixedly connected with a pressing plate, and the pressing plate is slidably connected with the second mounting plate. According to the positioning device, the steering gear shell and the steering gear side end plate can be accurately positioned, better flexibility is achieved, and the welding precision and efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of steering gear processing technology, and relates to a welding fixture, particularly a steering gear welding fixture. Background Technology

[0002] The function of a steering gear is to appropriately transform the steering torque and steering angle from the steering wheel (mainly by reducing speed and increasing torque) and then output it to the steering tie rod mechanism, thereby turning the car. Therefore, a steering gear is essentially a speed reduction transmission device. There are various types of steering gears, such as rack and pinion, recirculating ball, worm gear crank pin, and power steering.

[0003] A search revealed a Chinese patent document disclosing a machining fixture for automotive power steering systems [Application No.: 201822156187.0; Publication No.: CN 209902729 U]. This fixture includes a fixture body with multiple limiting cylinders on its upper surface. A telescopic cylinder is located on the side of the cavity at the center of the fixture body. A positioning surface is provided on the steering system housing, with a threaded hole on one of the positioning surfaces. The upper end of the positioning screw is designed to be screwed into the threaded hole, and the lower end of the positioning screw has a groove. The automotive power steering system machining fixture described in this utility model can conveniently and quickly clamp and position the steering system housing on the fixture, effectively achieving fixed positioning during the machining of the steering system housing, avoiding shaking, displacement, and deformation during machining, and improving machining accuracy and efficiency.

[0004] In this patent, the steering gear housing needs to be fixed on the machining fixture first. When fixing the steering gear housing to the machining fixture, the positioning screw is screwed into the threaded hole, and then the positioning screw is passed through the limiting cylinder until the multiple positioning surfaces of the steering gear housing are respectively attached to the corresponding limiting cylinder. However, during the welding process, this method cannot effectively position and fix the steering gear and the side end plate to be welded, which will affect the welding accuracy and make it less flexible to use. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a steering gear welding fixture. The technical problem to be solved by this utility model is to achieve precise positioning of the steering gear housing and the steering gear side end plate, while also providing better flexibility and improving the accuracy and efficiency of welding processing.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A steering gear welding fixture includes a base plate, a positioning seat fixedly connected to the base plate, a first mounting plate and a second mounting plate fixedly connected to the base plate respectively, a first cylinder fixedly connected to the base plate via a support frame, an expansion positioning mechanism provided inside the positioning seat, a support plate fixedly connected to the first mounting plate, a connecting block slidably connected to the support plate, an output end of the first cylinder fixedly connected to the connecting block, an adjustment mechanism provided on the connecting block, a second cylinder fixedly connected to the right side of the second mounting plate, a pressure plate fixedly connected to the output end of the second cylinder, the pressure plate slidably connected to the second mounting plate, and a second guide rod fixedly connected to the base plate, the second guide rod slidably connected to the pressure plate.

[0008] The working principle of this utility model is as follows: The steering gear housing is placed on the positioning seat, and the expansion positioning mechanism is used to abut against the inner wall of the steering gear housing to fix it. Then, the second cylinder is activated to drive the pressure plate to move downward. The second guide rod and the second mounting plate guide the pressure plate during movement, so that the pressure plate abuts against the steering gear housing, thereby completing the positioning and clamping of the steering gear housing. Then, the steering gear side end plate is placed in the adjustment mechanism for clamping and fixing. Then, the first cylinder is activated to push the first plate towards the side wall of the steering gear housing, so that the steering gear side end plate abuts against the steering gear housing, thereby completing the clamping and positioning work of the steering gear housing before welding. Through the above, the welding fixture can be more flexible in use, making it easier to accurately position the steering gear side end plate and the steering gear housing, thereby improving the welding efficiency.

[0009] The adjustment mechanism includes a first plate, which is fixedly connected to a connecting block. A first guide rod is fixedly connected to the first plate, and a second plate is slidably connected to the first guide rod. A threaded sleeve is fixedly connected to the second plate, and a screw is threadedly connected to the threaded sleeve. The bottom end of the screw is rotatably connected to the first plate. Corresponding clamping components are provided on the first plate and the second plate.

[0010] Using the above structure, according to the size of the steering gear side end plate, the screw is turned, and the screw drives the second plate to move downward along the first guide rod through the threaded sleeve, so that the second plate abuts against the steering gear side end plate. Then, the clamping assembly is used to clamp and fix the steering gear side end plate, ensuring that the steering gear side end plate can be accurately delivered to the corresponding position on the side wall of the steering gear housing during welding.

[0011] The clamping assembly includes two electric clamps, which are fixedly connected to the first plate and the second plate, respectively. The output end of each electric clamp is fixedly connected to a clamping plate.

[0012] With the above structure, the electric chuck drives the clamping plates to move closer to each other, thereby abutting against the steering gear side end plate and clamping the steering gear side end plate.

[0013] The expansion positioning mechanism includes a motor and a bevel gear set. The bevel gear set includes a driving bevel gear and a driven bevel gear. The motor is fixedly connected to the positioning seat. The driving bevel gear is fixedly connected to the output shaft end of the motor. The driving bevel gear meshes with the driven bevel gear. A bidirectional threaded rod is fixedly connected to the driven bevel gear. Both ends of the bidirectional threaded rod are rotatably connected to the positioning seat. Two threaded movable seats are threadedly connected to the bidirectional threaded rod. An arc-shaped panel is fixedly connected to the threaded movable seat. The arc-shaped panel is slidably connected to the positioning seat.

[0014] With the above structure, the motor drives the bevel gear set to rotate, which in turn drives the bidirectional threaded rod to rotate, causing the two threaded moving seats and the arc panel to move in opposite directions, so that the arc panel abuts against the inner wall of the steering gear housing, fixing the steering gear housing and ensuring its stability during the welding process.

[0015] A tapered positioning block corresponding to the arc panel is fixedly connected to the pressure plate.

[0016] Using the above structure, the tapered positioning block can adapt to different steering gear inner diameters, and can be inserted to the appropriate depth to fix it according to the size of the steering gear inner diameter.

[0017] A slider is fixedly connected to the pressure plate, and a square opening is provided on the second mounting plate. A sliding groove is provided inside the square opening, and the sliding groove is slidably connected to the slider.

[0018] With the above structure, the pressure plate slides on the groove in the square opening through the slider, thereby ensuring the stability of the pressure plate when the second cylinder drives it, thus improving the accuracy of clamping and positioning the steering gear housing.

[0019] Compared with existing technologies, this steering gear welding fixture has the following advantages:

[0020] 1. Place the steering gear housing on the positioning seat, and use the expansion positioning mechanism to abut against the inner wall of the steering gear housing to fix it. Then, activate the second cylinder to drive the pressure plate downward. The second guide rod and the second mounting plate guide the pressure plate during movement, so that the pressure plate abuts against the steering gear housing, thereby completing the positioning and clamping of the steering gear housing. Then, place the steering gear side end plate in the adjustment mechanism for clamping and fixing. Then, activate the first cylinder to push the first plate towards the side wall of the steering gear housing, so that the steering gear side end plate abuts against the steering gear housing, thereby completing the clamping and positioning work of the steering gear housing before welding. The above method can make the welding fixture more flexible in use, facilitate the precise positioning of the steering gear side end plate and the steering gear housing, and thus improve the welding efficiency.

[0021] 2. Based on the dimensions of the steering gear side end plate, tighten the screw. The screw will drive the second plate to move downward along the first guide rod through the threaded sleeve, so that the second plate abuts against the steering gear side end plate. Then, use the clamping assembly to clamp and fix the steering gear side end plate to ensure that the steering gear side end plate can be accurately delivered to the corresponding position on the side wall of the steering gear housing during welding. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of the present invention.

[0023] Figure 2 This is a front sectional view of the present invention.

[0024] Figure 3 This is a top view of the positioning seat in this utility model.

[0025] Figure 4 This is a top view of the first flat plate in this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the second mounting plate in this utility model.

[0027] Figure 6 yes Figure 2 An enlarged schematic diagram of the structure at point A in the middle.

[0028] Figure 7 This is an assembly diagram of the present invention during welding.

[0029] In the diagram, 1. Base plate; 2. Positioning seat; 3. First mounting plate; 31. Support plate; 4. First cylinder; 41. Connecting block; 5. First flat plate; 51. First guide rod; 6. Second flat plate; 7. Threaded sleeve; 8. Screw; 9. Electric chuck; 91. Clamping plate; 10. Motor; 11. Bevel gear set; 12. Double-ended threaded rod; 121. Threaded moving seat; 13. Arc panel; 14. Second cylinder; 15. Pressure plate; 151. Conical positioning block; 152. Slider; 16. Second guide rod; 17. Second mounting plate; 171. Square opening; 172. Slide groove; 18. Steering gear side end plate; 19. Steering gear housing. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] like Figures 1-7As shown, this steering gear welding fixture includes a base plate 1, a positioning seat 2 fixedly connected to the base plate 1, a first mounting plate 3 and a second mounting plate 17 fixedly connected to the base plate 1 respectively, a first cylinder 4 fixedly connected to the base plate 1 via a support frame, an expansion positioning mechanism provided inside the positioning seat 2, a support plate 31 fixedly connected to the first mounting plate 3, a connecting block 41 slidably connected to the support plate 31, the output end of the first cylinder 4 fixedly connected to the connecting block 41, an adjustment mechanism provided on the connecting block 41, a second cylinder 14 fixedly connected to the right side of the second mounting plate 17, a pressure plate 15 fixedly connected to the output end of the second cylinder 14, the pressure plate 15 slidably connected to the second mounting plate 17, a second guide rod 16 fixedly connected to the base plate 1, the second guide rod 16 slidably connected to the pressure plate 15. In this embodiment, the steering gear housing 19 is placed on the positioning seat 2. The expansion positioning mechanism is used to abut against the inner wall of the steering gear housing 19 to fix it. Then, the second cylinder 14 is activated to drive the pressure plate 15 to move downward. The second guide rod 16 and the second mounting plate 17 guide the pressure plate 15 during movement, so that the pressure plate 15 abuts against the steering gear housing 19, thereby completing the positioning and clamping of the steering gear housing 19. Then, the steering gear side end plate 18 is placed in the adjustment mechanism for clamping and fixing. Then, the first cylinder 4 is activated to push the first plate 5 towards the side wall of the steering gear housing 19, so that the steering gear side end plate 18 abuts against the steering gear housing 19, thereby completing the clamping and positioning work of the steering gear housing 19 before welding. Through the above, the welding fixture can be more flexible in use, making it easier to accurately position the steering gear side end plate 18 and the steering gear housing 19, thereby improving the welding efficiency.

[0032] The adjustment mechanism includes a first plate 5, which is fixedly connected to a connecting block 41. A first guide rod 51 is fixedly connected to the first plate 5, and a second plate 6 is slidably connected to the first guide rod 51. A threaded sleeve 7 is fixedly connected to the second plate 6, and a screw 8 is internally threaded to the threaded sleeve 7. The bottom end of the screw 8 is rotatably connected to the first plate 5. Corresponding clamping components are provided on the first plate 5 and the second plate 6. In this embodiment, according to the size of the steering gear side end plate 18, the screw 8 is turned, and the screw 8 drives the second plate 6 to move downward along the first guide rod 51 through the threaded sleeve 7, so that the second plate 6 abuts against the steering gear side end plate 18. Then, the clamping components are used to clamp and fix the steering gear side end plate 18, ensuring that the steering gear side end plate 18 can be accurately delivered to the corresponding position on the side wall of the steering gear housing 19 during welding.

[0033] The clamping assembly includes two electric clamps 9, which are fixedly connected to the first plate 5 and the second plate 6 respectively. The output end of the electric clamp 9 is fixedly connected to a clamping plate 91. In this embodiment, the electric clamp 9 drives the clamping plates 91 to move closer to each other, thereby abutting against the steering gear side end plate 18 and clamping the steering gear side end plate 18.

[0034] The expansion positioning mechanism includes a motor 10 and a bevel gear set 11. The bevel gear set 11 includes a driving bevel gear and a driven bevel gear. The motor 10 is fixedly connected to the positioning seat 2. The output shaft end of the motor 10 is fixedly connected to the driving bevel gear, which meshes with the driven bevel gear. A bidirectional threaded rod 12 is fixedly connected to the driven bevel gear. Both ends of the bidirectional threaded rod 12 are rotatably connected to the positioning seat 2. Two threaded moving seats 121 are threadedly connected to the bidirectional threaded rod 12. An arc panel 13 is fixedly connected to the threaded moving seats 121 and is slidably connected to the positioning seat 2. In this embodiment, the motor 10 drives the bevel gear set 11 to rotate, thereby driving the bidirectional threaded rod 12 to rotate. This causes the two threaded moving seats 121 and the arc panel 13 to move in opposite directions, so that the arc panel 13 abuts against the inner wall of the steering gear housing 19, fixing the steering gear housing 19 and ensuring its stability during the welding process.

[0035] A tapered positioning block 151 corresponding to the arc panel 13 is fixedly connected to the pressure plate 15. In this embodiment, the tapered positioning block 151 can adapt to different inner diameters of the steering gear housing 18 and is fixed by being inserted to the appropriate depth according to the size of the inner diameter of the steering gear housing 18.

[0036] A slider 152 is fixedly connected to the pressure plate 15. A square opening 171 is provided on the second mounting plate 17, and a sliding groove 172 is provided in the square opening 171. The sliding groove 172 is slidably connected to the slider 152. In this embodiment, the pressure plate 15 slides on the sliding groove 172 in the square opening 171 through the slider 152, thereby ensuring the stability of the second cylinder 14 when driving the pressure plate 15 to move, thereby improving the accuracy of clamping and positioning the steering gear housing 19.

[0037] The working principle of this utility model is as follows: The steering gear housing 19 is placed on the positioning seat 2. The motor 10 drives the bevel gear set 11 to rotate, thereby driving the bidirectional threaded rod 12 to rotate. This causes the two threaded moving seats 121 and the arc panel 13 to move in opposite directions, so that the arc panel 13 abuts against the inner wall of the steering gear housing 19, fixing the steering gear housing 19. Then, the second cylinder 14 is activated to drive the pressure plate 15 to move downward. The second guide rod 16 and the second mounting plate 17 guide the pressure plate 15 during movement, so that the pressure plate 15 abuts against the steering gear housing 19, thereby completing the positioning and clamping of the steering gear housing 19. Then, the steering gear... The steering gear side end plate 18 is placed between the first plate 5 and the second plate 6. According to the size of the steering gear side end plate 18, the screw 8 is turned. The screw 8 drives the second plate 6 to move downward along the first guide rod 51 through the threaded sleeve 7, so that the second plate 6 abuts against the steering gear side end plate 18. Then, the electric chuck 9 drives the clamping plates 91 to move closer to each other, so as to abut against the steering gear side end plate 18 and clamp the steering gear side end plate 18. Then, the first cylinder 4 is activated to push the first plate 5 to move towards the side wall of the steering gear housing 19, so that the steering gear side end plate 18 abuts against the steering gear housing 19, thereby completing the clamping and positioning work before welding the steering gear housing 19.

[0038] In summary, by using the positioning seat, expansion positioning mechanism, first cylinder, adjustment mechanism, clamping assembly, second cylinder and pressure plate in combination, the steering gear housing and steering gear side end plate can be accurately positioned, with better flexibility, and the accuracy and efficiency of welding processing can be improved.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A steering gear welding fixture, comprising a base plate (1), characterized in that, A positioning seat (2) is fixedly connected to the base plate (1). A first mounting plate (3) and a second mounting plate (17) are fixedly connected to the base plate (1). A first cylinder (4) is fixedly connected to the base plate (1) via a support frame. An expansion positioning mechanism is provided inside the positioning seat (2). A support plate (31) is fixedly connected to the first mounting plate (3). A connecting block (41) is slidably connected to the support plate (31). The output end of the first cylinder (4) is fixedly connected to the connecting block (41). An adjustment mechanism is provided on the connecting block (41). A second cylinder (14) is fixedly connected to the right side of the second mounting plate (17). A pressure plate (15) is fixedly connected to the output end of the second cylinder (14). The pressure plate (15) is slidably connected to the second mounting plate (17). A second guide rod (16) is fixedly connected to the base plate (1). The second guide rod (16) is slidably connected to the pressure plate (15).

2. The steering gear welding fixture according to claim 1, characterized in that, The adjustment mechanism includes a first plate (5), which is fixedly connected to a connecting block (41). A first guide rod (51) is fixedly connected to the first plate (5), and a second plate (6) is slidably connected to the first guide rod (51). A threaded sleeve (7) is fixedly connected to the second plate (6), and a screw (8) is threadedly connected to the threaded sleeve (7). The bottom end of the screw (8) is rotatably connected to the first plate (5). Corresponding clamping components are provided on the first plate (5) and the second plate (6).

3. A steering gear welding fixture according to claim 2, characterized in that, The clamping assembly includes two electric clamps (9), which are fixedly connected to the first plate (5) and the second plate (6) respectively. The output end of the electric clamp (9) is fixedly connected to a clamping plate (91).

4. A steering gear welding fixture according to claim 1, characterized in that, The expansion positioning mechanism includes a motor (10) and a bevel gear set (11). The bevel gear set (11) includes a driving bevel gear and a driven bevel gear. The motor (10) is fixedly connected to the positioning seat (2). The output shaft end of the motor (10) is fixedly connected to the driving bevel gear. The driving bevel gear meshes with the driven bevel gear. A bidirectional threaded rod (12) is fixedly connected to the driven bevel gear. Both ends of the bidirectional threaded rod (12) are rotatably connected to the positioning seat (2). Two threaded moving seats (121) are threadedly connected to the bidirectional threaded rod (12). An arc panel (13) is fixedly connected to the threaded moving seat (121). The arc panel (13) is slidably connected to the positioning seat (2).

5. A steering gear welding fixture according to claim 1, characterized in that, A conical positioning block (151) corresponding to the arc panel (13) is fixedly connected to the pressure plate (15).

6. A steering gear welding fixture according to claim 1, characterized in that, A slider (152) is fixedly connected to the pressure plate (15), and a square opening (171) is provided on the second mounting plate (17). A sliding groove (172) is provided in the square opening (171), and the sliding groove (172) is slidably connected to the slider (152).

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