An automobile axle housing self-positioning welding tool

Abstract

The utility model discloses a kind of automobile axle housing self-positioning welding tool, including positioning frame, clamping mechanism and length positioning mechanism;Positioning frame: its left and right inner wall between front and back symmetry fixedly connected with slide pole, the outer arc surface of two slide poles is respectively left and right symmetry slidingly connected with sliding frame;Clamping mechanism: it includes mounting bracket and placing groove, the upper end of two sliding frames is respectively fixedly connected in mounting bracket, and placing groove is respectively set in the middle part of mounting bracket;Length positioning mechanism: it includes installation box, placement plate, pivot and swing bar, the middle part of positioning frame is fixedly connected in installation box, and placement plate is fixedly connected on the upper surface of installation box, pivot is rotatably connected on the upper side wall of installation box, the lower end of pivot is rotatably connected with the lower side wall middle part of positioning frame, and the outer arc surface lower side of pivot is fixedly connected with swing bar, and this automobile axle housing self-positioning welding tool reduces the difficulty of position adjustment before welding automobile axle housing.

Description

Technical Field

[0001] This utility model relates to the field of automotive axle housing installation technology, specifically to a self-positioning welding fixture for automotive axle housings. Background Technology

[0002] The axle housing is a rigid hollow beam structure mounted on the drive axle of a car. It is an important component of the drive axle and the running gear. It supports the weight of the car and bears the road reaction force and reaction torque transmitted from the wheels to the frame via the suspension. It also serves as a support and enclosure for components such as the main reducer, differential, and half shafts, providing a mounting base for these components and fixing the axial position of the left and right drive wheels to ensure the stability of the wheels during driving.

[0003] In the prior art, patent publication number CN219358699U discloses a simple automotive axle housing tooling fixture, including a base. A set of symmetrically distributed fixing posts are installed on both sides of the base surface. The fixing posts pass through a first sliding block. A first fixing member is installed at the bottom of the first sliding block. A second fixing member, connected to the base surface, is installed directly below the first fixing member. A set of slide rails is provided on the base surface. A set of symmetrically distributed sliding posts are embedded in the slide rails. The sliding posts pass through a second sliding block. A cavity is provided inside the second sliding block. A support plate is installed on the inner wall of the cavity. The support plate passes through several sliding plates. When the sliding block is in contact with the axle housing surface, it forms a groove that fits the axle housing surface. Pressing the sliding bar completes the fixing of the sliding plate.

[0004] The above-mentioned tooling fixtures have some problems in actual use. For example, it is cumbersome to fix the axle housing by aligning the car axle housing on the shelf with the center position and then adjusting the position of the second sliding block on the slide rail. The operation is complicated and requires frequent use of a distance measuring tool to determine the position, which is quite difficult. Therefore, we propose a self-positioning welding tooling for car axle housings. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a self-positioning welding fixture for automobile axle housings, which reduces the difficulty of adjusting the position before welding automobile axle housings and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-positioning welding fixture for automobile axle housings, comprising a positioning frame, a clamping mechanism, and a length positioning mechanism;

[0007] Positioning frame: Slide rods are symmetrically fixedly connected between the left and right inner walls, and slide frames are symmetrically connected to the outer arc surfaces of the two slide rods.

[0008] Clamping mechanism: It includes a mounting frame and a placement slot. The mounting frame is fixedly connected to the upper end of two sliding frames, and the middle part of the mounting frame is provided with a placement slot.

[0009] Length positioning mechanism: It includes a mounting box, a placement plate, a rotating shaft, and a swing rod. The mounting box is fixedly connected to the middle of the positioning frame. The placement plate is fixedly connected to the upper surface of the mounting box. The rotating shaft is rotatably connected to the upper side wall of the mounting box. The lower end of the rotating shaft is rotatably connected to the middle of the lower side wall of the positioning frame. A swing rod is fixedly connected to the lower side of the outer arc surface of the rotating shaft. The left and right ends of the swing rod are respectively fixedly connected to round pins. The two round pins are slidably connected inside the sliding grooves opened on the lower side of the sliding frame located on the same side, reducing the difficulty of adjusting the position before welding the automobile axle housing.

[0010] Furthermore, the positioning frame is equipped with a controller on its exterior. The input terminal of the controller is electrically connected to an external power source to control the normal operation of each electrical component.

[0011] Furthermore, the length positioning mechanism also includes a worm gear, a motor, and a worm. The worm gear is fixedly connected to the upper side of the outer arc surface of the rotating shaft. A worm is rotatably connected between the left and right inner walls of the mounting box. The worm gear and the worm are meshed together. A motor is fixedly connected to the front side of the left side of the mounting box. The output shaft of the motor is fixedly connected to the left end of the worm. The input end of the motor is electrically connected to the output end of the controller to provide power for spacing adjustment.

[0012] Furthermore, the clamping mechanism also includes a slide rail, a slider, a clamping plate, a hinge support, and a push rod. The slide rail is fixedly connected to the upper inner wall of the two mounting brackets respectively. Sliders are symmetrically slidably connected to the inside of the two slide rails. A clamping plate is fixedly connected to the opposite inner side of each pair of longitudinally adjacent sliders. The lower surface of each slider is rotatably connected to a push rod through a hinge support to achieve the function of clamping and fixing.

[0013] Furthermore, the clamping mechanism also includes a drive mounting plate and a clamping cylinder. The drive mounting plate is fixedly connected inside the two mounting brackets, and the clamping cylinder is fixedly connected to the lower side wall of the drive mounting plate. The telescopic ends of the two clamping cylinders are rotatably connected to the lower ends of two vertically adjacent push rods, and the air inlets of the two clamping cylinders are externally connected to an external air pump to provide power for clamping.

[0014] Furthermore, hanging rings are fixedly connected to the four corners of the upper surface of the positioning frame to realize the hoisting function.

[0015] Furthermore, foot cups are fixedly connected to the four corners of the lower surface of the positioning frame to provide support.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This self-positioning welding fixture for automobile axle housing has the following advantages:

[0017] The system employs a worm gear transmission structure and a connecting rod structure to drive the sliding frames to approach each other and clamp the two sides of the car axle housing during this process. Then, a clamp is used to clamp the car axle housing, which can fix car axle housings of different lengths. It also has a centering function during the fixing process, reducing the difficulty of adjusting the position before welding the car axle housing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a schematic diagram of a partial cross-sectional view of the structure of this utility model after explosion;

[0021] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0022] Figure 5 This is an enlarged structural diagram of section B of the present invention;

[0023] Figure 6 This is a schematic diagram of the sliding frame and mounting frame of this utility model.

[0024] In the diagram: 1. Positioning frame, 2. Slide rod, 3. Controller, 4. Slide frame, 5. Clamping mechanism, 51. Mounting frame, 52. Slide rail, 53. Slider, 54. Clamping plate, 55. Placement slot, 56. Hinge support, 57. Push rod, 58. Drive mounting plate, 59. Clamping cylinder, 6. Length positioning mechanism, 61. Mounting box, 62. Placement plate, 63. Rotating shaft, 64. Worm gear, 65. Motor, 66. Worm, 67. Swing rod, 7. Round pin, 8. Hanging ring, 9. Foot cup. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This embodiment provides a technical solution: a self-positioning welding fixture for automobile axle housings, including a positioning frame 1, a clamping mechanism 5, and a length positioning mechanism 6;

[0027] Positioning frame 1: Slide rods 2 are symmetrically fixedly connected between its left and right inner walls, and slide frames 4 are symmetrically slidably connected to the outer arc surfaces of the two slide rods 2.

[0028] The positioning frame 1 is equipped with a controller 3 on its exterior. The input end of the controller 3 is electrically connected to an external power source. Hanging rings 8 are fixedly connected to the four corners of the upper surface of the positioning frame 1, and foot cups 9 are fixedly connected to the four corners of the lower surface of the positioning frame 1. When the welding fixture is needed, it is lifted by an external crane through the hanging rings 8 on the positioning frame 1, and then placed in the designated work position through the foot cups 9 on the positioning frame 1. The foot cups 9 are composed of a screw and a base plate. The height of the equipment can be finely adjusted (±5mm to ±30mm range) by rotating the screw. The base plate is mostly made of rubber material, and the anti-slip groove design increases the friction coefficient of the contact surface to prevent the positioning frame 1 from shifting.

[0029] Clamping mechanism 5: It includes a mounting frame 51 and a placement groove 55. The mounting frame 51 is fixedly connected to the upper end of the two sliding frames 4 respectively. The middle part of the mounting frame 51 is provided with a placement groove 55. The circular or arc-shaped shell surfaces on both sides of the bridge shell are placed inside the placement groove 55 of the mounting frame 51.

[0030] The clamping mechanism 5 also includes a slide rail 52, a slider 53, a clamping plate 54, a hinge support 56, and a push rod 57. The slide rail 52 is fixedly connected to the upper inner wall of the two mounting brackets 51 respectively. The sliders 53 are symmetrically slidably connected to the inside of the two slide rails 52. The clamping plates 54 are fixedly connected to the opposite inner sides of each pair of longitudinally adjacent sliders 53. The lower surface of each slider 53 is rotatably connected to the push rod 57 through the hinge support 56. The length of the slide rail 52 is four times the length of the push rod 57, which effectively prevents the slider 53 from falling off during the sliding process.

[0031] The clamping mechanism 5 also includes a drive mounting plate 58 and clamping cylinders 59. The drive mounting plate 58 is fixedly connected inside each of the two mounting brackets 51. Clamping cylinders 59 are fixedly connected to the lower side walls of the drive mounting plate 58. The telescopic ends of the two clamping cylinders 59 are rotatably connected to the lower ends of two vertically adjacent push rods 57. The air inlets of the two clamping cylinders 59 are externally connected to an external air pump. The external air pump can be installed at the workstation near the positioning frame 1, depending on the application scenario. The external air pump is connected to the air inlet of the clamping cylinder 59 via a pipe. A guide cylinder with the same diameter as the telescopic end of the clamping cylinder 59 needs to be fixed in the middle of the drive mounting plate 58. The inside of the guide cylinder is movably sleeved with the telescopic end of the clamping cylinder 59. When the telescopic end of the clamping cylinder 59 extends or retracts, it reduces the lateral... The load is applied so that the extension end of the clamping cylinder 59 is only subjected to vertical load force, protecting the clamping cylinder 59. At this time, the external air pump can be adjusted to operate the clamping cylinder 59, and the extension end of the clamping cylinder 59 retracts, pulling the push rod 57, forcing the two sliders 53 to approach each other, and clamping the outer surface of the automobile axle housing through the inclined surface of the clamping plate 54. The clamping position of the automobile axle housing is located on the arc surface of the axle housing arm. The arc surface of the automobile axle housing is similar to a cylinder. When the two mounting brackets 51 approach each other, the opposite inner surfaces of the mounting brackets 51 will abut against the stepped cross-section of the automobile axle housing, completing the initial fixation. Then, the arc surface of the automobile axle housing is clamped by the inclined clamping surface of the clamping plate 54 to complete the fixation of the automobile axle housing. At this time, the automobile axle housing can be welded to the designated work position.

[0032] Length positioning mechanism 6: It includes a mounting box 61, a placement plate 62, a rotating shaft 63, and a swing rod 67. The mounting box 61 is fixedly connected to the middle of the positioning frame 1. The placement plate 62 is fixedly connected to the upper surface of the mounting box 61. The rotating shaft 63 is rotatably connected to the upper side wall of the mounting box 61. The lower end of the rotating shaft 63 is rotatably connected to the middle of the lower side wall of the positioning frame 1. The swing rod 67 is fixedly connected to the lower side of the outer arc surface of the rotating shaft 63. The left and right ends of the swing rod 67 are respectively fixedly connected to round pins 7. The two round pins 7 are slidably connected inside the sliding grooves opened on the lower side of the sliding frame 4 located on the same side. At this time, the length positioning mechanism can be adjusted. The axle housing is placed on the mounting plate 62 on the mounting box 61. At this time, the middle of the lower surface of the axle housing is placed on the mounting plate 62, which drives the rocker arm 67 to rotate clockwise or counterclockwise around the central axis of the rotating shaft 63. When the rocker arm 67 changes its angle clockwise, it moves the sliding frame 4 to both sides through the round pin 7 so that it moves away from each other. The relative movement of the sliding frame 4 is done before the axle housing is placed. After the axle housing is placed, the rocker arm 67 changes its angle counterclockwise so that the sliding frame 4 moves closer to each other until the mounting groove 55 touches the arc surface of the axle housing, at which point the movement of the sliding frame 4 can be stopped.

[0033] The length positioning mechanism 6 also includes a worm gear 64, a motor 65, and a worm 66. The worm gear 64 is fixedly connected to the upper side of the outer arc surface of the rotating shaft 63. The worm 66 is rotatably connected between the left and right inner walls of the mounting housing 61. The worm gear 64 and the worm 66 are meshed together. The motor 65 is fixedly connected to the front side of the left side of the mounting housing 61. The output shaft of the motor 65 is fixedly connected to the left end of the worm 66. The input end of the motor 65 is electrically connected to the output end of the controller 3. The worm gear 64 and the worm 66 are both located inside the mounting housing 61, which effectively prevents dust from adhering to the surfaces of the worm gear 64 and the worm 66, thus affecting the transmission efficiency. By controlling the controller 3, the motor 65 operates. The output shaft of the motor 65 rotates clockwise or counterclockwise, driving the worm 66 to rotate clockwise or counterclockwise, thereby driving the rotating shaft 63 to adjust its angle clockwise or counterclockwise through the worm gear 64.

[0034] The working principle of the self-positioning welding fixture for automobile axle housing provided by this utility model is as follows: When the welding fixture is needed, it is lifted by an external crane through the hanging ring 8 on the positioning frame 1, and then placed in the designated position by the foot cups 9 on the positioning frame 1. At this time, the automobile axle housing can be placed on the placement plate 62 on the mounting box 61. At this time, the middle of the lower surface of the automobile axle housing is placed on the placement plate 62, while the circular or arc-shaped shell surfaces on both sides of the axle housing are placed inside the placement groove 55 of the mounting frame 51. At this time, the controller 3 can be adjusted to operate the motor 65. The output shaft of the motor 65 rotates clockwise or counterclockwise, driving the worm gear 66 to rotate clockwise or counterclockwise. In turn, the worm wheel 64 drives the rotating shaft 63 to adjust the angle clockwise or counterclockwise, thereby driving the rocker arm 67 to rotate clockwise or counterclockwise around the central axis of the rotating shaft 63. When the rocker arm 67... When the angle changes clockwise, the sliding bracket 4 is moved away from each other by the round pin 7. The relative movement of the sliding bracket 4 is performed before the car axle housing is placed. After the car axle housing is placed, the rocker arm 67 changes the angle counterclockwise, making the sliding bracket 4 move closer together until the placement groove 55 touches the arc surface of the car axle housing. At this time, the external air pump can be adjusted to operate the clamping cylinder 59. The telescopic end of the clamping cylinder 59 retracts, pulling the push rod 57, forcing the two sliders 53 to move closer to each other. The outer surface of the car axle housing is clamped by the inclined surface of the clamping plate 54, thus fixing the car axle housing. At this time, the car axle housing can be welded to the designated work position. After the welding and installation of the axle housing is completed, the clamping state of the clamping plate 54 can be released. Then, the two mounting brackets 51 move away from each other, releasing the fixation of the axle housing, and the tooling can be removed.

[0035] It is worth noting that the core chip of the controller 3 disclosed in the above embodiments is a single-chip microcomputer, specifically the S7-200. The clamping cylinder 59 and the motor 65 can be freely configured according to the actual application scenario. It is recommended that the clamping cylinder 59 be an SDA series thin-walled cylinder, and the motor 65 be an LH series servo motor. The controller 3 controls the operation of the clamping cylinder 59 using methods commonly used in the prior art.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A self-positioning welding fixture for automotive axle housings, characterized in that: It includes a positioning frame (1), a clamping mechanism (5), and a length positioning mechanism (6); Positioning frame (1): Slide rods (2) are symmetrically fixed between its left and right inner walls, and slide frames (4) are symmetrically slidably connected to the outer arc surfaces of the two slide rods (2) respectively. Clamping mechanism (5): It includes a mounting frame (51) and a placement slot (55). The mounting frame (51) is fixedly connected to the upper end of the two sliding frames (4), and the middle part of the mounting frame (51) is provided with a placement slot (55). Length positioning mechanism (6): It includes a mounting box (61), a placement plate (62), a rotating shaft (63) and a swing rod (67). The mounting box (61) is fixedly connected to the middle of the positioning frame (1). The placement plate (62) is fixedly connected to the upper surface of the mounting box (61). The rotating shaft (63) is rotatably connected to the upper side wall of the mounting box (61). The lower end of the rotating shaft (63) is rotatably connected to the middle of the lower side wall of the positioning frame (1). The swing rod (67) is fixedly connected to the lower side of the outer arc surface of the rotating shaft (63). The left and right ends of the swing rod (67) are respectively fixedly connected to round pins (7). The two round pins (7) are slidably connected to the inside of the sliding groove opened on the lower side of the sliding frame (4) located on the same side.

2. The self-positioning welding fixture for automotive axle housings according to claim 1, characterized in that: The positioning frame (1) is equipped with a controller (3) on its exterior, and the input end of the controller (3) is electrically connected to an external power source.

3. The self-positioning welding fixture for automotive axle housings according to claim 2, characterized in that: The length positioning mechanism (6) also includes a worm gear (64), a motor (65) and a worm (66). The worm gear (64) is fixedly connected to the upper side of the outer arc surface of the rotating shaft (63). The worm (66) is rotatably connected between the left and right inner walls of the mounting box (61). The worm gear (64) and the worm (66) are meshed together. The motor (65) is fixedly connected to the front side of the left side of the mounting box (61). The output shaft of the motor (65) is fixedly connected to the left end of the worm (66). The input end of the motor (65) is electrically connected to the output end of the controller (3).

4. The self-positioning welding fixture for automotive axle housings according to claim 1, characterized in that: The clamping mechanism (5) further includes a slide rail (52), a slider (53), a clamping plate (54), a hinge support (56), and a push rod (57). The slide rail (52) is fixedly connected to the upper inner wall of the two mounting brackets (51). The sliders (53) are symmetrically connected to the inside of the two slide rails (52). The clamping plates (54) are fixedly connected to the opposite inner surfaces of each pair of longitudinally adjacent sliders (53). The lower surface of each slider (53) is rotatably connected to the push rod (57) through the hinge support (56).

5. The self-positioning welding fixture for automotive axle housings according to claim 4, characterized in that: The clamping mechanism (5) also includes a drive mounting plate (58) and a clamping cylinder (59). The drive mounting plate (58) is fixedly connected inside the two mounting brackets (51). The clamping cylinder (59) is fixedly connected to the lower side wall of the drive mounting plate (58). The telescopic ends of the two clamping cylinders (59) are rotatably connected to the lower ends of two vertically adjacent push rods (57). The air inlets of the two clamping cylinders (59) are externally connected to an external air pump.

6. The self-positioning welding fixture for automotive axle housings according to claim 1, characterized in that: The four corners of the upper surface of the positioning frame (1) are fixedly connected with hanging rings (8).

7. The self-positioning welding fixture for automotive axle housings according to claim 1, characterized in that: Foot cups (9) are fixedly connected to the four corners of the lower surface of the positioning frame (1).

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