A rear axle housing damper bracket welding tool

Abstract

The present application relates to a kind of rear axle housing shock absorber support welding tool, including rack, the positioning locking device for limiting and clamping axle head of both ends of axle housing is respectively arranged at both ends of rack, shock absorber support assembly positioning device is arranged between positioning locking device, the shock absorber support assembly positioning device includes linear translation device being arranged on rack, linear vertical movement device is arranged on the moving end of linear translation device, positioning assembly for the positioning of axle housing reinforcing ring hole is arranged on the moving end of linear vertical movement device, distance adjusting positioning device is arranged on positioning assembly, and clamp block for limiting the position of shock absorber support is arranged on distance adjusting positioning device.The present application is convenient to adjust, easy to use, improves work efficiency under the premise of guaranteeing the positioning accuracy of shock absorber support.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and specifically to a welding fixture for a rear axle housing shock absorber bracket. Background Technology

[0002] The shock absorber bracket assembly on the rear axle is a crucial connecting component that drives the rear axle and supports the vehicle frame, contributing to its stability and safety. Its assembly dimensions directly affect various aspects of the vehicle's performance. It requires the use of fixtures and spot welding to join the shock absorber bracket assembly to the rear axle housing assembly, ensuring the correct positional dimensions of the shock absorber bracket assembly before full welding.

[0003] For example, CN112372212A discloses a flange, shock absorber bracket assembly, and rear axle housing assembly assembly assembly welding fixture and its operating method, which involves a corresponding structure: it includes a tooling platform, a first V-shaped positioning block, a flange positioning and clamping device, a shock absorber bracket assembly positioning device, and a T-nut; the tooling platform has a base frame, a first base plate, a guide rail, a center positioning device, a valve switch mounting bracket, and a manual valve; the first V-shaped positioning block, the flange positioning and clamping device, and the shock absorber bracket assembly positioning device are connected by flat keys, bolts, and T-nuts and then respectively installed on the guide rail of the tooling platform. This mechanism allows for adjustment of the front-to-back, up-and-down, and rear-to-rear dimensions of the shock absorber bracket assembly positioning device.

[0004] This application proposes different solutions to achieve rapid positioning and adjustment of shock absorber brackets. In addition, existing technologies do not have a good solution for the problem of uneven mounting surfaces of shock absorber brackets, which makes accurate positioning impossible. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding fixture for the rear axle housing shock absorber bracket, which facilitates the adjustment of the shock absorber bracket's positioning and improves work efficiency.

[0006] It adopts the following technical solution: A welding fixture for a rear axle housing shock absorber bracket includes a frame. Positioning and locking devices for limiting and clamping the axle ends at both ends of the frame are respectively provided at both ends of the frame. A shock absorber bracket assembly positioning device is provided between the positioning and locking devices. The shock absorber bracket assembly positioning device includes a linear translation device mounted on the frame, a linear vertical translation device on the moving end of the linear translation device, a positioning component for positioning the axle housing reinforcing ring hole on the moving end of the linear vertical translation device, an adjustable positioning device on the positioning component, and a locking block for limiting the position of the shock absorber bracket.

[0007] Furthermore, the linear vertical movement device includes a pair of vertical guide rods with guide sleeves slidably connected to them. The pair of guide sleeves are fixedly connected to an externally suspended lifting plate. The lifting plate is connected to a positioning assembly, and a lifting cylinder is connected to the lower side of the lifting plate.

[0008] Furthermore, the top ends of the two guide rods are connected to a tie rod, and a tension spring connects the tie rod to the lifting plate.

[0009] Furthermore, the linear translation device includes a pair of first linear slide rails mounted on the frame. The length direction of the first linear slide rails is perpendicular to the axis of the bridge housing. A first slider is slidably connected to each first linear slide rail. A support base is connected to both first sliders. The support base serves as the moving end of the linear translation device.

[0010] Furthermore, the distance adjustment positioning device includes a second linear translation device connected to the positioning component. The movement direction of the second linear translation device is perpendicular to the bridge housing axis. A pair of third linear translation devices are provided on the moving end of the second linear translation device. The movement direction of the two third linear translation devices is set along the bridge housing axis. The moving end of each third linear translation device is connected to the locking block. The locking block includes a V-shaped block with the slot facing downward.

[0011] Furthermore, the second linear translation device includes a pair of second linear slide rails disposed on the positioning component, each second linear slide rail being slidably connected to a second slider, and the two second sliders being connected to an adjustment seat. The third linear translation device includes a fixed support mounted on an adjustment base, a fixed slider mounted on the fixed support, a third linear slide rail slidably connected to the fixed slider, a quick-change seat fixedly connected to the outer end of the third linear slide rail, and a slot with a vertical opening facing downwards, wherein the locking block can be inserted and locked in the slot.

[0012] Furthermore, the adjusting seat is provided with a first indicator pointer, and the third linear slide rail is provided with a second indicator pointer; the positioning component is provided with a first scale set along the moving direction of the second linear translation device and a second scale set along the moving direction of the third linear translation device, the first indicator pointer being adapted to the first scale for marking, and the second indicator pointer being adapted to the second scale for marking.

[0013] Furthermore, the positioning component includes a base plate that can cover the opening of the reinforcing ring hole of the axle housing. A pair of stop positioning blocks are provided on the lower side of the base plate. The two stop positioning blocks are located on both sides of the diameter direction of the reinforcing ring hole of the axle housing and can be positioned in contact with the hole wall of the reinforcing ring hole of the axle housing.

[0014] Furthermore, the positioning and locking device includes a fourth linear translation device. The moving end of the fourth linear translation device can move along the axle housing axis. A base plate is provided on the moving end, and a V-shaped support block is connected to the base plate. The slot of the V-shaped support block is set upward. A rotary cylinder is also provided on one side of the base plate. A swing arm is connected to the output end of the rotary cylinder, and a V-shaped pressure block is connected to the swing arm. When the swing arm is pressed, the slot of the V-shaped pressure block faces downward and clamps and positions the axle housing shaft head on the V-shaped support block.

[0015] Furthermore, the fourth linear translation device includes a pair of fourth linear slide rails arranged parallel to each other on the frame, and a fourth slider is slidably connected to each fourth linear slide rail. The base plate is connected to the pair of fourth sliders. A limiting plate is provided on one side of the frame in the width direction of the fourth linear slide rail. The limiting plate is provided with a plurality of insertion holes. A plug rod is screwed onto the base plate. The plug rod can be optionally inserted into the insertion hole to lock the base plate in different positions.

[0016] The advantages of this invention compared to the prior art are as follows: By setting up a shock absorber bracket assembly positioning device, the present invention can flexibly and accurately adjust the position of the positioning components and the position of the locking block according to different specifications and models of axle housings, thereby improving the adaptability of the device. By setting a tension spring between the tie rod and the lifting plate, the upward force of the tension spring counteracts the gravity of the lifting plate and the components it supports, preventing the "head-down" phenomenon of the overhanging lifting plate, thereby improving the positioning accuracy of the positioning component and the operating accuracy of the second and third linear translation devices. By setting the card block as a slot structure with a V-shaped block and the slot facing downwards, the side wall of the V-shaped slot of the V-shaped block contacts and limits the contact with the circumferential side of the shaft head of the shock absorber bracket, and the side wall of the end face of the V-shaped block contacts and limits the contact with the stepped plane of the shaft head, so that the V-shaped block can accurately position the shaft head, allowing the shock absorber bracket to swing slightly with the shaft head as the rotation center, eliminating the influence of surface unevenness at the connection with the axle housing; By setting a positioning and locking device, a swing arm is connected to the output end of the rotary cylinder. A V-shaped pressure block is connected to the swing arm. When the swing arm is pressed, the slot of the V-shaped pressure block faces down and clamps the axle housing shaft head onto the V-shaped support block, thereby improving the positioning and locking performance at the axle housing journal. By setting a limiting plate with several sockets and screwing a plug rod onto the base plate, the plug rod can be optionally inserted into the socket to improve the locking performance of the base plate in different positions. Overall, the device is easy to adjust and use, and improves work efficiency while ensuring the positioning accuracy of the shock absorber bracket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a welding fixture for a rear axle housing shock absorber bracket in an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning device for the shock absorber bracket assembly in an embodiment of the present invention; Figure 3 This is a schematic diagram of the distance adjustment positioning device in an embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the quick-change seat and the card block in an embodiment of the present invention; Figure 5 yes Figure 3 A partial structural schematic diagram from a top-down view; Figure 6 This is a schematic diagram of the positioning component in an embodiment of the present invention; Figure 7 This is a schematic diagram of the positioning and locking device in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 100, frame; 200, positioning and locking device; 210, fourth linear translation device; 211, fourth linear slide rail; 212, fourth slider; 213, limiting plate; 214, insertion hole; 220, base plate; 221, insertion rod; 230, V-shaped support block; 240, rotary cylinder; 250, swing arm; 260, V-shaped pressure block; 300, shock absorber bracket assembly positioning device; 310, linear translation device; 311, first linear slide rail; 312, first slider; 313, support seat; 320, linear vertical translation device; 321, guide rod; 322, guide sleeve; 323, lifting plate; 324, lifting cylinder; 325, fixing sleeve; 326, support; 327, tie rod; 328, tension spring; 330. Positioning component; 331. Base plate; 332. Stop positioning block; 340. Adjustable positioning device; 350. Second linear translation device; 351. Second linear slide rail; 352. Second slider; 353. Adjusting seat; 354. First indicator pointer; 355. First scale; 360. Third linear translation device; 361. Fixed support; 362. Fixed slider; 363. Third linear slide rail; 364. Quick change seat; 365. Slot; 366. Second indicator pointer; 367. Second scale; 368. Locking screw; 370. Locking block; 371. Insert block; 372. V-block; 373. Limiting groove; 900. Bridge housing; 910. Shock absorber bracket; 911. Shaft head; 920. Bridge housing reinforcing ring hole. Detailed Implementation

[0019] To make the present invention clearer, the following description, in conjunction with the accompanying drawings, further illustrates a welding fixture for a rear axle housing shock absorber bracket according to the present invention. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the present invention.

[0020] like Figure 1As shown, a welding fixture for a rear axle housing shock absorber bracket includes a frame 100, which is assembled and welded from rectangular tubes and is T-shaped in the plan view. Positioning and locking devices 200 for limiting and securing the axle ends of the axle housing are respectively provided on both ends of the frame 100 along its length. A shock absorber bracket assembly positioning device 300 is provided in the middle of the frame 100, located at the protruding part of the T-shape, between the two positioning and locking devices 200.

[0021] Combination Figure 2 As shown, the shock absorber bracket assembly positioning device 300 includes a linear translation device 310 mounted on the frame 100, a linear vertical translation device 320 mounted on the moving end of the linear translation device 310, a positioning component 330 for positioning the bridge housing reinforcing ring hole mounted on the moving end of the linear vertical translation device 320, an adjustable positioning device 340 mounted on the positioning component 330, and a locking block 370 for limiting the position of the shock absorber bracket 910 mounted on the adjustable positioning device 340.

[0022] The linear translation device 310 includes a pair of first linear slide rails 311 mounted on the frame 100. The length direction of the first linear slide rails 311 is perpendicular to the axis of the bridge housing 900. A first slider 312 is slidably connected to each first linear slide rail 311. A support base 313 is connected to both first sliders 312, serving as the moving end of the linear translation device 310. A pair of vertically arranged guide rods 321 are fixedly connected to the upper surface of the support base 313 via a fixing sleeve 325. A guide sleeve 322 is slidably mounted on each guide rod 321. The upper end of the guide sleeve 322 has a flange. The pair of guide sleeves 322 are fixedly connected to an externally suspended lifting plate 323 via the flange. The external suspension direction of the lifting plate 323 faces the bridge housing 900. A lifting cylinder 324 is provided on the lower side of the lifting plate 323. The fixed end of the lifting cylinder 324 is fixedly connected to the support base 313 via a support 326, and the moving end is vertically connected to the lower plate surface of the lifting plate 323. The top ends of the two guide rods 321 are connected to the tie rod 327, and a tension spring 328 is connected between the tie rod 327 and the lifting plate 323.

[0023] Combination Figure 3 As shown, the adjustable positioning device 340 includes a second linear translation device 350 connected to the positioning assembly 330. The moving direction of the second linear translation device 350 is perpendicular to the bridge housing axis. A pair of third linear translation devices 360 are provided on the left and right ends of the moving end of the second linear translation device 350. The moving direction of the two third linear translation devices 360 is set along the bridge housing axis. The locking block 370 is connected to the moving end of each third linear translation device 360.

[0024] The second linear translation device 350 includes a pair of second linear slide rails 351 disposed on the positioning assembly 330, the length direction of the second linear slide rails 351 being perpendicular to the axis of the bridge housing. A second slider 352 is slidably connected to each second linear slide rail 351, and an adjustment seat 353 is connected to both second sliders 352.

[0025] The third linear translation device 360 ​​includes a fixed support 361 mounted on an adjusting seat 353, located on one side of the adjusting seat 353. A fixed slider 362 is fixedly mounted on the upper surface of the fixed support 361, which presses against a third linear slide rail 363. The third linear slide rail 363 can slide linearly relative to the fixed slider 362 along the bridge housing axial direction. A quick-change seat 364 is fixedly connected to the outer end of the third linear slide rail 363. Figure 4 As shown, the quick-change seat 364 has a vertical slot 365 with its opening facing downwards. The slot 365 has a non-circular cross-section and an anti-rotation function. The locking block 370 includes an insert block 371 and a connected V-shaped block 372. The insert block 371 can be inserted and locked into the slot 365, and the V-shaped block 372 has its slot facing downwards, used to press down and limit the shaft head 911 of the shock absorber bracket 910. The shaft head 911 is a key component that has a mating relationship with external automotive parts, and its positioning accuracy affects the overall assembly performance. Here, the shaft head 911 has a stepped columnar structure. The V-shaped groove sidewall of the V-block 372 contacts and limits the peripheral sidewall of the shaft head 911, and the end face sidewall of the V-block 372 contacts and limits the stepped plane of the shaft head 911. The structural design of the V-block 372 can solve the problem of positioning failure due to uneven base surface on which the shock absorber bracket 910 is placed. That is, the V-block 372 can accurately position the shaft head 911 of the shock absorber bracket 910, allowing the shock absorber bracket 910 to swing slightly around the shaft head 911 as the rotation center, eliminating the adverse effects of uneven surface at the corresponding part of the axle housing. The unevenness of the axle housing surface is difficult to eliminate due to welding thermal stress, weld seam and other factors. In addition, the insert block 371 is also provided with a limiting groove 373, and the quick-change seat 364 has a threaded hole for a connecting slot 365 on its side wall. A locking screw 368 is set in the threaded hole and pressed into the limiting groove 373 to lock and fix the card block 370.

[0026] Combination Figure 3 , Figure 5 As shown, the adjustment seat 353 is provided with a first indicator pointer 354, and the third linear slide rail 363 is provided with a second indicator pointer 366; the positioning component 330 is provided with a first scale 355 arranged along the moving direction of the second linear translation device 350 and a second scale 367 arranged along the moving direction of the third linear translation device 360. The first indicator pointer 354 is adapted to the first scale 355 for marking, and the second indicator pointer 366 is adapted to the second scale 367 for marking. Here, the first and second scales are formed by engraving scale markings on a strip-shaped rectangular block.

[0027] Combination Figure 6 As shown, the positioning component 330 includes a base plate 331 that can cover the opening of the bridge housing reinforcing ring hole 920. The base plate 331 is annular. A pair of stop positioning blocks 332 are provided on the lower side of the base plate 331. The two stop positioning blocks 332 are located on both sides of the diameter direction of the bridge housing reinforcing ring hole 920. The positioning is formed by the outer end face of the two stop positioning blocks 332 contacting the hole wall of the bridge housing reinforcing ring hole 920.

[0028] Combination Figure 7 As shown, the positioning and locking device 200 includes a fourth linear translation device 210, the movable end of which can move along the axle housing axial direction. The fourth linear translation device 210 includes a pair of fourth linear slide rails 211 parallel to each other on the frame 100. Each fourth linear slide rail 211 is slidably connected to a fourth slider 212, which together connects to a base plate 220. A V-shaped support block 230 is connected to the base plate 220, with its slot facing upwards. A rotary cylinder 240 is also provided on one side of the base plate 220, with a swing arm 250 connected to its output end. A V-shaped pressure block 260 is connected to the swing arm 250. When the swing arm 250 swings and presses, the slot of the V-shaped pressure block 260 faces downwards, clamping and positioning the axle housing shaft head onto the V-shaped support block 230. Here, the clamped V-shaped pressure block 260 is located directly above the V-shaped support block 230.

[0029] A limiting plate 213 is provided on the frame near the fourth linear guide rail 211 on the outer side. The limiting plate 213 has several insertion holes 214, which are arranged along the axial direction of the axle housing. A plug rod 221 is screwed onto the base plate 220. The plug rod 221 can be a screw. By rotating the plug rod 221, it can be moved up and down. Its lower end can be inserted into the insertion hole 214 to lock the base plate 220 in different positions. In addition, a locking nut (not shown in the figure) is also connected to the plug rod 221 to improve its anti-loosening ability.

[0030] When this device is in operation, firstly, the positioning and locking device 200 is adjusted to a suitable position, and the axle housing 900 is placed in the positioning and locking device 200 and locked; secondly, the shock absorber bracket assembly positioning device 300 is operated, and the positioning component 330 is precisely positioned in the axle housing reinforcing ring hole 920 by moving the linear translation device 310 and the linear vertical translation device 320; next, by adjusting the second linear translation device 350 and the third linear translation device 360, the locking blocks 370 on both sides are adjusted to the specified positions; finally, the shaft head 911 in the shock absorber bracket 910 is limited in the locking block 370, the shock absorber bracket 910 is precisely positioned, and it is spot welded and fixed by a welding machine before full welding.

[0031] During the aforementioned operation, the shock absorber bracket assembly positioning device 300 can be adjusted according to different specifications and models of axle housings. In particular, the positioning dimensions of the shock absorber bracket 910 can be easily adjusted through the second and third linear translation devices. By setting a tension spring 328 between the tie rod 327 and the lifting plate 323, the upward force of the tension spring 328 counteracts the gravity of the lifting plate 323 and the components it supports, preventing the overhanging lifting plate 323 from "tilting" and thus improving the positioning accuracy of the positioning component 330 and the operating accuracy of the second and third linear translation devices. Overall, the device is easy to adjust and use, and improves work efficiency while ensuring the positioning accuracy of the shock absorber bracket.

[0032] The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. However, obvious variations or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A welding fixture for a rear axle housing shock absorber bracket, comprising a frame (100), wherein positioning and locking devices (200) for limiting and clamping the axle housing shaft ends are respectively provided at both ends of the frame (100), and a shock absorber bracket assembly positioning device (300) is provided between the positioning and locking devices (200), characterized in that: The shock absorber bracket assembly positioning device (300) includes a linear translation device (310) mounted on the frame (100), a linear vertical translation device (320) on the moving end of the linear translation device (310), a positioning component (330) for positioning the axle housing reinforcing ring hole (920) on the moving end of the linear vertical translation device (320), an adjustable positioning device (340) on the positioning component (330), and a locking block (370) for limiting the position of the shock absorber bracket (910) on the adjustable positioning device (340). The distance adjustment positioning device (340) includes a second linear translation device (350) connected to the positioning component (330). The movement direction of the second linear translation device (350) is perpendicular to the bridge housing axis. A pair of third linear translation devices (360) are provided on the moving end of the second linear translation device (350). The movement direction of the two third linear translation devices (360) is set along the bridge housing axis. The moving end of each third linear translation device (360) is connected to the locking block (370). The locking block (370) includes a V-shaped block (372). The slot of the V-shaped block (372) is set downward. The second linear translation device (350) includes a pair of second linear slide rails (351) disposed on the positioning component (330), a second slider (352) is slidably connected on each second linear slide rail (351), and an adjustment seat (353) is connected to both second sliders (352). The third linear translation device (360) includes a fixed support (361) provided on the adjustment seat (353), a fixed slider (362) provided on the fixed support (361), a third linear slide rail (363) slidably connected on the fixed slider (362), a quick-change seat (364) fixedly connected to the outer end of the third linear slide rail (363), the quick-change seat (364) has a vertical slot (365) with the opening facing downwards, and the locking block (370) can be inserted and locked in the slot (365).

2. The welding fixture for a rear axle housing shock absorber bracket according to claim 1, characterized in that: The linear vertical movement device (320) includes a pair of vertical guide rods (321), with guide sleeves (322) slidably connected on the guide rods (321). The pair of guide sleeves (322) are fixedly connected to the externally suspended lifting plate (323). The lifting plate (323) is connected to the positioning component (330), and a lifting cylinder (324) is connected to the lower side of the lifting plate (323).

3. The welding fixture for a rear axle housing shock absorber bracket according to claim 2, characterized in that: The top ends of the two guide rods (321) are connected to a tie rod (327), and a tension spring (328) is connected between the tie rod (327) and the lifting plate (323).

4. A welding fixture for a rear axle housing shock absorber bracket according to claim 1 or 3, characterized in that: The linear translation device (310) includes a pair of first linear slide rails (311) mounted on the frame (100). The length direction of the first linear slide rails (311) is perpendicular to the axis of the bridge housing. A first slider (312) is slidably connected to each first linear slide rail (311). A support base (313) is connected to both first sliders (312). The support base (313) serves as the moving end of the linear translation device (310).

5. The welding fixture for a rear axle housing shock absorber bracket according to claim 1, characterized in that: The adjustment seat (353) is provided with a first indicator pointer (354), and the third linear slide rail (363) is provided with a second indicator pointer (366); the positioning component (330) is provided with a first scale (355) set along the moving direction of the second linear translation device (350) and a second scale (367) set along the moving direction of the third linear translation device (360), the first indicator pointer (354) is adapted to the first scale (355) for marking, and the second indicator pointer (366) is adapted to the second scale (367) for marking.

6. The welding fixture for a rear axle housing shock absorber bracket according to claim 1, characterized in that: The positioning component (330) includes a base plate (331) that can cover the opening of the bridge housing reinforcing ring hole (920). A pair of stop positioning blocks (332) are provided on the lower side of the base plate (331). The two stop positioning blocks (332) are located on both sides of the diameter direction of the bridge housing reinforcing ring hole (920) and can be positioned in contact with the hole wall of the bridge housing reinforcing ring hole (920).

7. The welding fixture for a rear axle housing shock absorber bracket according to claim 1, characterized in that: The positioning and locking device (200) includes a fourth linear translation device (210). The moving end of the fourth linear translation device (210) can move along the axle housing axis. A base plate (220) is provided on the moving end. A V-shaped support block (230) is connected to the base plate (220). The slot of the V-shaped support block (230) is set upward. A rotary cylinder (240) is also provided on one side of the base plate (220). A swing arm (250) is connected to the output end of the rotary cylinder (240). A V-shaped pressure block (260) is connected to the swing arm (250). When the swing arm (250) is pressed, the slot of the V-shaped pressure block (260) faces downward and clamps and positions the axle housing shaft head on the V-shaped support block (230).

8. The welding fixture for a rear axle housing shock absorber bracket according to claim 7, characterized in that: The fourth linear translation device (210) includes a pair of fourth linear slide rails (211) arranged in parallel on the frame (100). Each fourth linear slide rail (211) is slidably connected to a fourth slider (212). The base plate (220) is connected to the pair of fourth sliders (212). A limiting plate (213) is provided on the frame on one side of the width direction of the fourth linear slide rail (211). The limiting plate (213) is provided with a plurality of insertion holes (214). A plug rod (221) is screwed onto the base plate (220). The plug rod (221) can be optionally inserted into the insertion hole (214) to lock the base plate (220) in different positions.

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