Axle housing plate spring type support welding tool

Abstract

The utility model discloses an axle housing plate spring type support welding tool, which belongs to the technical field of automobile part machining and particularly comprises a welding table. The center positioning mechanism is arranged on the welding table and is used for positioning the middle part of the axle housing; the first side positioning mechanism and the second side positioning mechanism are arranged on the two sides of the welding table and used for positioning the axle housing in the radial direction; the third side positioning mechanisms are arranged on the other two sides of the welding table and used for positioning the axle housing in the axial direction; through the center positioning mechanism, the first side positioning mechanism, the second side positioning mechanism and the third side positioning mechanism, the novel axle housing clamping tool can be better compatible with a novel axle housing and is suitable for clamping and positioning of the novel axle housing in the axial direction and the radial direction, the application range of the clamping tool is widened, clamping points of the novel axle housing are increased, and the clamping efficiency of the novel axle housing is improved. And the accuracy of the new axle housing in the welding process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile spare part processing, and particularly relates to a welding tooling for a bridge shell leaf spring type bracket. Background Technique

[0002] Since the hydraulic automatic clamping and positioning device for an automobile bridge shell has high positioning accuracy, fast clamping speed and simple operation method, it is widely used in the manufacturing field of automobile rear axle bridge shells.

[0003] A hydraulic positioning and pressing device for an automobile bridge shell is disclosed in the Chinese utility model patent CN209551222U, which includes movable supports a and b placed on both sides of a substrate, floating support cylinders a, b, and c fixedly distributed on the circumference of the bridge package of the bridge shell, floating support cylinders d, e, f, and g distributed below the circumference of the bridge package, rocker pressing cylinders c and d fixedly distributed oppositely on both sides of the bridge package, a rotary smoothing cylinder distributed opposite to floating support cylinder a between floating support cylinders b and c, and an axial positioning cylinder distributed on movable support b. The design of the utility model is reasonable and novel. By optimizing the pressing and positioning cylinder stations and process flow of the bridge shell, it avoids the instability of the processing dimensions caused by the deformation of the bridge shell, improves the product quality of the bridge shell, reduces the defective product rate, and saves production costs.

[0004] There are still deficiencies in the above application documents: during the clamping and positioning process of a new bridge shell, the clamping tooling for the bridge shell has poor compatibility and is not suitable for clamping and positioning the new bridge shell, resulting in certain limitations for the clamping tooling; moreover, the clamping points of the clamping tooling for the bridge shell are small, resulting in inaccurate welding of the bridge shell during the welding process. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the utility model provides a welding tooling for a bridge shell leaf spring type bracket, which has the characteristics of high compatibility and good clamping effect.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a welding tooling for a bridge shell leaf spring type bracket, including a welding table;

[0007] A central positioning mechanism arranged on the welding table for positioning the middle part of the bridge shell;

[0008] The central positioning mechanism includes a pneumatic hydraulic chuck, and chucks are fixedly arranged on two grippers of the pneumatic hydraulic chuck;

[0009] A floating plate, the floating plate is arranged between the two chucks, and both ends of the floating plate are connected to the welding table through floating components;

[0010] The first side positioning mechanism and the second side positioning mechanism arranged on both sides of the welding table are used to position the radial direction of the axle housing.

[0011] The first side positioning mechanism includes a clamping and positioning frame, and the clamping and positioning frame is slidably connected to the welding table through a first sliding plate.

[0012] The second side positioning mechanism includes a first side positioning frame, the first side positioning frame is slidably connected to the welding table through a second sliding plate, and second side positioning frames, side support positioning frames and third side positioning frames are also slidably connected to both sides of the first side positioning frame on the second sliding plate.

[0013] A third side positioning mechanism arranged on the other two sides of the welding table is used to position the axial direction of the axle housing.

[0014] Preferably, the floating assembly includes a connecting plate, a column is fixedly arranged at the top of the connecting plate, a spring is fixedly arranged at the top of the column, and the other end of the spring is fixedly connected to the floating plate.

[0015] Preferably, the clamping and positioning frame includes a first bottom plate fixedly arranged on the first sliding plate, a first support fixedly arranged on the first bottom plate, and a first cylinder fixedly arranged on the first support. A first clamping block is fixedly connected to the movable end of the first cylinder.

[0016] Preferably, the first side positioning frame includes a second bottom plate fixedly arranged on the second sliding plate, a first angle seat fixedly arranged on the second bottom plate, and a first jig quick clamp fixedly arranged on the first angle seat. A first positioning block is fixedly connected to the movable end of the first jig quick clamp.

[0017] Preferably, the second side positioning frame includes a third bottom plate fixedly arranged on the second sliding plate, a second angle seat fixedly arranged on the third bottom plate, and a second jig quick clamp fixedly arranged on the second angle seat. A second positioning block is fixedly connected to the movable end of the second jig quick clamp.

[0018] Preferably, the side support positioning frame includes a fourth bottom plate fixedly arranged on the second sliding plate, an L-shaped seat fixedly arranged on the fourth bottom plate, and a third positioning block fixedly arranged on the L-shaped seat. A side plate is fixedly arranged on the side of the L-shaped seat, and the side plate is fixedly connected to the third positioning block.

[0019] Preferably, the third side positioning frame includes a fifth bottom plate fixedly arranged on the second sliding plate, a mounting plate fixedly arranged on the fifth bottom plate, and a second air cylinder fixedly arranged on the mounting plate. A transition plate is fixedly arranged at the movable end of the second air cylinder, a pin seat plate is fixedly arranged on the transition plate, and a positioning pin is fixedly arranged on the pin seat plate.

[0020] Preferably, it further includes a fourth side positioning frame arranged on one side of the first side positioning frame. The fourth side positioning frame is arranged between the side support positioning frame and the third side positioning frame. The fourth side positioning frame includes a sixth bottom plate fixedly arranged on the second sliding plate, a third angle seat fixedly arranged on the sixth bottom plate, and a third clamp quick clamp fixedly arranged on the third angle seat. The movable end of the third clamp quick clamp is fixedly connected with a fourth positioning block.

[0021] Preferably, the third side positioning mechanism includes a mounting seat fixedly arranged on the welding table and a cylinder seat fixedly arranged on the top of the mounting seat. One end of the cylinder seat is fixedly connected with a third air cylinder, the movable end of the third air cylinder is fixedly connected with a mandrel, and the other end of the mandrel is fixedly connected with a center point.

[0022] Preferably, it further includes positioning pieces fixedly arranged on the axle housing. A plurality of the positioning pieces are provided, and the plurality of positioning pieces are respectively arranged in corresponding adaptation with the first clamping block, the first positioning block, the second positioning block, and the fourth positioning block;

[0023] A support block fixedly arranged on the axle housing, and a positioning groove for inserting the third positioning block is arranged on the support block;

[0024] A clamping block fixedly arranged on the axle housing, and a pin hole adapted to the positioning pin is arranged on the clamping block.

[0025] Compared with the prior art, the beneficial effects of the present utility model are:

[0026] Through the center positioning mechanism, the first side positioning mechanism, the second measuring and positioning mechanism, and the third side positioning mechanism, the present utility model can better be compatible with the new axle housing, is applicable to the clamping and positioning of the new axle housing in the axial direction and the radial direction, improves the applicable range of the clamping tooling, and improves the accuracy of the new axle housing during the welding process by increasing the clamping points for the new axle housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0028] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0029] Figure 2 This is the schematic top view structure of the present utility model;

[0030] Figure 3 This is the schematic structure diagram of the pneumatic-hydraulic chuck of the present utility model;

[0031] Figure 4 This is the schematic three-dimensional structure diagram of the clamping and positioning frame of the present utility model;

[0032] Figure 5 This is the schematic three-dimensional structure diagram of the first side positioning frame of the present utility model;

[0033] Figure 6 This is the schematic three-dimensional structure diagram of the second side positioning frame of the present utility model;

[0034] Figure 7 This is the schematic three-dimensional structure diagram of the side support positioning frame of the present utility model;

[0035] Figure 8 This is the schematic three-dimensional structure diagram of the third side positioning frame of the present utility model;

[0036] Figure 9 This is the schematic three-dimensional structure diagram of the fourth side positioning frame of the present utility model;

[0037] Figure 10 This is the schematic three-dimensional structure diagram of the third side positioning mechanism of the present utility model;

[0038] Figure 11 This is the schematic sectional structure diagram of the third side positioning mechanism of the present utility model;

[0039] In the figure: 1, welding table; 2, pneumatic-hydraulic chuck; 3, jaw; 4, floating plate; 5, floating assembly; 51, connecting plate; 52, column; 53, spring; 6, clamping and positioning frame; 61, first base plate; 62, first support; 63, first cylinder; 64, first clamping block; 7, first slide plate; 8, first side positioning frame; 81, second base plate; 82, first corner seat; 83, first fixture quick clamp; 84, first positioning block; 9, second slide plate; 10, second side positioning frame; 101, third base plate; 102, second corner seat; 103, second fixture quick clamp; 104, second positioning block; 11, side support positioning frame; 111, fourth base plate; 112, L-shaped seat; 113, third positioning block; 114, side plate; 12, third side positioning frame; 121, fifth base plate; 122, mounting plate; 123, second cylinder; 124, transition plate; 125, pin seat plate; 126, positioning pin; 13, fourth side positioning frame; 131, sixth base plate; 132, third corner seat; 133, third fixture quick clamp; 134, fourth positioning block; 14, third side positioning mechanism; 141, mounting seat; 142, cylinder seat; 143, third cylinder; 144, mandrel; 145, center point. Detailed implementation manners

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the protection scope of the present invention. Embodiment

[0041] Please refer to Figures 1-11 , this embodiment provides the following technical solutions: A welding tool for a bridge housing leaf spring type bracket, including a welding table 1;

[0042] As Figure 3 shown, a center positioning mechanism provided on the welding table 1 for positioning the middle part of the bridge housing; the center positioning mechanism includes a pneumatic-hydraulic chuck 2, and jaws 3 are fixedly provided on two grippers of the pneumatic-hydraulic chuck 2; a floating plate 4, the floating plate 4 is arranged between the two jaws 3, and both ends of the floating plate 4 are connected to the welding table 1 through a floating assembly 5. After the bridge housing is placed on the floating plate 4, the two jaws 3 can be separated from each other simultaneously through the pneumatic-hydraulic chuck 2 and the jaws 3 to position the reduction cavity on the bridge housing.

[0043] In some embodiments, the jaw 3 is an L-shaped structure, the floating plate 4 is perpendicularly arranged to the jaw 3, and the end of the floating plate 4 is in a cross-shaped fit with the two jaws 3 to position the middle part of the bridge housing.

[0044] The floating component 5 includes a connecting plate 51. A column 52 is fixedly arranged at the top of the connecting plate 51. A spring 53 is fixedly arranged at the top of the column 52. The other end of the spring 53 is fixedly connected to the floating plate 4. Through the spring 53, after the axle housing is placed on the floating plate 4, it can buffer the axle housing.

[0045] As Figure 5 shown, the first side positioning mechanism and the second side positioning mechanism arranged on two sides of the welding table 1 are used to position the radial direction of the axle housing.

[0046] Through the central positioning mechanism, the first side positioning mechanism, the second measuring and positioning mechanism and the third side positioning mechanism, the new axle housing can be better compatible, suitable for clamping and positioning in the axial and radial directions of the new axle housing, improving the application range of the clamping tooling, and by increasing the clamping points of the new axle housing, the accuracy of the new axle housing during the welding process is improved.

[0047] In some embodiments, several first side positioning mechanisms can be provided. The several first side positioning mechanisms are arranged at intervals along the axial direction of the axle housing. The first side positioning mechanism is arranged at the rear side of the welding table 1.

[0048] The first side positioning mechanism includes a clamping and positioning frame 6. The clamping and positioning frame 6 is slidably connected to the welding table 1 through a first slide plate 7. Through the first slide plate 7, the position of the clamping and positioning frame 6 can be adjusted.

[0049] The clamping and positioning frame 6 includes a first bottom plate 61 fixedly arranged on the first slide plate 7, a first support 62 fixedly arranged on the first bottom plate 61, and a first cylinder 63 fixedly arranged on the first support 62. The movable end of the first cylinder 63 is fixedly connected with a first clamping block 64. Through the first cylinder 63, the first clamping block 64 can be turned downward to fit with the axle housing, positioning the radial direction of the axle housing. On the contrary, when the first clamping block 64 is turned upward, the positioning of the axle housing is released.

[0050] In some embodiments, the first cylinder 63 adopts a clamping cylinder, and the first clamping block 64 is of an L-shaped structure, and the L-shaped groove of the first clamping block 64 is greater than 90 degrees.

[0051] As Figure 5As shown, in some embodiments, the second-side positioning mechanism is disposed on the front side of the welding table 1. The second-side positioning mechanism includes a first-side positioning frame 8. The first-side positioning frame 8 is slidably connected to the welding table 1 through a second slide plate 9. The first-side positioning frame 8 includes a second bottom plate 81 fixedly disposed on the second slide plate 9, a first angle seat 82 fixedly disposed on the second bottom plate 81, and a first clamp quick-clamp 83 fixedly disposed on the first angle seat 82. The movable end of the first clamp quick-clamp 83 is fixedly connected with a first positioning block 84. By means of the first clamp quick-clamp 83, the first positioning block 84 can be brought close to the axle housing and be fitted with the axle housing to position the radial direction of the axle housing. On the contrary, when the first positioning block 84 moves away from the axle housing, the positioning of the axle housing is released.

[0052] On the left and right sides of the first-side positioning frame 8 on the second slide plate 9, a second-side positioning frame 10, a side support positioning frame 11, and a third-side positioning frame 12 are also slidably connected.

[0053] As Figure 6 shown, the second-side positioning frame 10 includes a third bottom plate 101 fixedly disposed on the second slide plate 9, a second angle seat 102 fixedly disposed on the third bottom plate 101, and a second clamp quick-clamp 103 fixedly disposed on the second angle seat 102. The movable end of the second clamp quick-clamp 103 is fixedly connected with a second positioning block 104. By means of the second clamp quick-clamp 103, the second positioning block 104 can be brought close to the axle housing and be fitted with the axle housing to position the radial direction of the axle housing. On the contrary, when the second positioning block 104 moves away from the axle housing, the positioning of the axle housing is released.

[0054] In some embodiments, the second positioning block 104 is of an L-shaped structure, and the L-shaped groove of the second positioning block 104 is greater than 90 degrees.

[0055] As Figure 7 shown, the side support positioning frame 11 includes a fourth bottom plate 111 fixedly disposed on the second slide plate 9, an L-shaped seat 112 fixedly disposed on the fourth bottom plate 111, and a third positioning block 113 fixedly disposed on the L-shaped seat 112. A side plate 114 is fixedly disposed on the side portion of the L-shaped seat 112, and the side plate 114 is fixedly connected with the third positioning block 113. By means of the third positioning block 113, after the axle housing is placed on the floating plate 4, the third positioning block 113 can be inserted into the corresponding hole groove on the axle housing to position the radial direction of the axle housing.

[0056] In some embodiments, one side of the top end of the third positioning block 113 is beveled to facilitate the insertion of the third positioning block 113 into the corresponding hole groove on the axle housing.

[0057] As Figure 8As shown in the figure, the third side positioning frame 12 includes a fifth base plate 121 fixedly arranged on the second sliding plate 9, a mounting plate 122 fixedly arranged on the fifth base plate 121, and a second air cylinder 123 fixedly arranged on the mounting plate 122. A transition plate 124 is fixedly arranged at the movable end of the second air cylinder 123. A pin seat plate 125 is fixedly arranged on the transition plate 124, and a positioning pin 126 is fixedly arranged on the pin seat plate 125. Through the second air cylinder 123, the transition plate 124 can drive the pin seat plate 125 to approach the axle housing and fit with the axle housing, so that the positioning pin 126 is inserted into the corresponding hole groove on the axle housing to position the radial direction of the axle housing. On the contrary, when the pin seat plate 125 moves away from the axle housing, the positioning of the axle housing is released.

[0058] In some embodiments, the second air cylinder 123 is a double guide rod air cylinder, and the second air cylinder 123 is inclinedly arranged on the fifth base plate 121, so that the pin seat plate 125 can be inclinedly close to or away from the axle housing.

[0059] As Figure 9 shown in the figure, it further includes a fourth side positioning frame 13 arranged on one side of the first side positioning frame 8. The fourth side positioning frame 13 is arranged between the side support positioning frame 11 and the third side positioning frame 12. The fourth side positioning frame 13 includes a sixth base plate 131 fixedly arranged on the second sliding plate 9, a third angle seat 132 fixedly arranged on the sixth base plate 131, and a third clamp quick clamp 133 fixedly arranged on the third angle seat 132. A fourth positioning block 134 is fixedly connected to the movable end of the third clamp quick clamp 133. Through the third clamp quick clamp 133, the fourth positioning block 134 can be close to the axle housing and fit with the axle housing to position the radial direction of the axle housing. On the contrary, when the fourth positioning block 134 moves away from the axle housing, the positioning of the axle housing is released.

[0060] As Figure 10 shown in the figure, the third side positioning mechanisms arranged on the other two sides of the welding table 1 are used to position the axial direction of the axle housing. In some embodiments, the two third side positioning mechanisms are arranged on the left and right sides of the welding table 1. The third side positioning mechanism 14 includes a mounting seat 141 fixedly arranged on the welding table 1, a cylinder seat 142 fixedly arranged on the top of the mounting seat 141. One end of the cylinder seat 142 is fixedly connected with a third air cylinder 143, and the movable end of the third air cylinder 143 is fixedly connected with a mandrel 144. The other end of the mandrel 144 is fixedly connected with a center point 145. Through the third air cylinder 143, the mandrel 144 can drive the center point 145 to approach the axle housing and fit with the end of the axle housing. With the cooperation of the center points 145 on the left and right sides, the axial direction of the axle housing is positioned. On the contrary, when the center points 145 on the left and right sides move away simultaneously, the positioning of the axial direction of the axle housing is released.

[0061] Working principle of the utility model: First step: Place the axle housing on the floating plate 4. At this time, the opening direction of the reduction cavity of the axle housing is set downward. After the floating plate 4 is subjected to the gravity of the axle housing, it moves downward. The floating plate 4 squeezes the spring 53. And while the axle housing moves downward, the third positioning block 113 can be inserted into the corresponding hole groove of the axle housing;

[0062] Place the middle part of the axle housing on the floating plate 4. The floating plate 4 moves downward due to the weight of the axle housing. While the floating plate 4 moves downward, it squeezes the spring 53 until the spring 53 is subjected to the maximum squeezing force. At this time, the claw 3 is located in the reduction cavity of the axle housing;

[0063] Second step: Start the pneumatic hydraulic chuck 2 to make the gripper drive the claw 3 to move outward simultaneously to position the inner side of the reduction cavity of the axle housing;

[0064] Third step: Start the first cylinder 63 to make the first clamping block 64 turn downward until the first clamping block 64 fits with the axle housing to position the radial direction of the axle housing;

[0065] Fourth step: Start the second cylinder 123 to make the pin seat plate 125 move toward the axle housing and fit with the axle housing until the positioning pin 126 on the pin seat plate 125 is inserted into the corresponding pin hole on the axle housing to position the radial direction of the axle housing;

[0066] Fifth step: Start the third cylinder 143 to make the mandrels 144 on the left and right drive the tips 145 to move toward the end of the axle housing and fit with the end of the axle housing to position the axial direction of the axle housing.

[0067] Sixth step: Manually operate the first fixture quick clamp 83 to make the first positioning block 84 move toward the axle housing until the first positioning block 64 fits with the axle housing to position the radial direction of the axle housing;

[0068] Seventh step: Manually operate the second fixture quick clamp 103 to make the second positioning block 104 move toward the axle housing until the second positioning block 104 fits with the axle housing to position the radial direction of the axle housing;

[0069] Eighth step: Manually operate the third fixture quick clamp 133 to make the third positioning block 113 move toward the axle housing until the third positioning block 113 fits with the axle housing to position the radial direction of the axle housing.

[0070] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bridge housing leaf spring bracket welding tool, characterized in that: comprising a welding table (1); A center positioning mechanism disposed on the welding table (1) and used for positioning the middle part of the bridge housing; The center positioning mechanism comprises a pneumatic hydraulic chuck (2), and two grippers of the pneumatic hydraulic chuck (2) are fixedly provided with claws (3); A floating plate (4), the floating plate (4) being arranged between the two clamping claws (3), and both ends of the floating plate (4) being connected to the welding platform (1) via floating components (5); A first side positioning mechanism and a second side positioning mechanism are arranged on two sides of the welding table (1) and are used to position the axle housing in a radial direction; The first side positioning mechanism comprises a clamping positioning frame (6), and the clamping positioning frame (6) is slidably connected to the welding table (1) via a first slide plate (7); The second side positioning mechanism comprises a first side positioning frame (8), the first side positioning frame (8) being slidably connected to the welding table (1) via a second slide plate (9), and the second slide plate (9) being slidably connected to a second side positioning frame (10), a side support positioning frame (11) and a third side positioning frame (12) on both sides of the first side positioning frame (8); The third side positioning mechanisms arranged on the other two sides of the welding platform (1) are used to position the bridge housing in the axial direction.

2. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The floating assembly (5) comprises a connecting plate (51), a column (52) is fixedly arranged on the top of the connecting plate (51), a spring (53) is fixedly arranged on the top of the column (52), and the other end of the spring (53) is fixedly connected to the floating plate (4).

3. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The clamping and positioning frame (6) comprises a first base plate (61) slidably fixedly arranged on the first slide plate (7), a first support (62) fixedly arranged on the first base plate (61), and a first cylinder (63) fixedly arranged on the first support (62), wherein the movable end of the first cylinder (63) is fixedly connected to a first clamping block (64).

4. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The first side positioning frame (8) comprises a second base plate (81) fixedly mounted on the second slide plate (9), a first angle seat (82) fixedly mounted on the second base plate (81), and a first clamp quick clamp (83) fixedly mounted on the first angle seat (82), wherein a movable end of the first clamp quick clamp (83) is fixedly connected to a first positioning block (84).

5. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The second side positioning frame (10) comprises a third base plate (101) fixedly mounted on the second slide plate (9), a second angle seat (102) fixedly mounted on the third base plate (101), and a second clamp quick clamp (103) fixedly mounted on the second angle seat (102), wherein the movable end of the second clamp quick clamp (103) is fixedly connected to a second positioning block (104).

6. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The side support positioning frame (11) comprises a fourth bottom plate (111) fixedly arranged on the second slide plate (9), an L-shaped seat (112) fixedly arranged on the fourth bottom plate (111), and a third positioning block (113) fixedly arranged on the L-shaped seat (112), a side plate (114) fixedly arranged on the side of the L-shaped seat (112), and the side plate (114) is fixedly connected to the third positioning block (113).

7. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The third side positioning frame (12) comprises a fifth base plate (121) fixedly arranged on the second slide plate (9), a mounting plate (122) fixedly arranged on the fifth base plate (121), and a second cylinder (123) fixedly arranged on the mounting plate (122); a transition plate (124) is fixedly arranged on the movable end of the second cylinder (123); a pin seat plate (125) is fixedly arranged on the transition plate (124); and a positioning pin (126) is fixedly arranged on the pin seat plate (125).

8. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The invention also comprises a fourth side positioning frame (13) arranged on one side of the first side positioning frame (8), the fourth side positioning frame (13) being arranged between the side support positioning frame (11) and the third side positioning frame (12), the fourth side positioning frame (13) comprising a sixth bottom plate (131) fixedly arranged on the second slide plate (9), a third angle seat (132) fixedly arranged on the sixth bottom plate (131), and a third clamp quick clamp (133) fixedly arranged on the third angle seat (132), wherein the movable end of the third clamp quick clamp (133) is fixedly connected to a fourth positioning block (134).

9. The bridge housing leaf spring bracket welding tool according to claim 1, characterized in that: The third side positioning mechanism (14) comprises a mounting seat (141) fixedly arranged on the welding table (1), and a cylinder seat (142) fixedly arranged on the top of the mounting seat (141); one end of the cylinder seat (142) is fixedly connected to a third cylinder (143); the movable end of the third cylinder (143) is fixedly connected to a core shaft (144); and the other end of the core shaft (144) is fixedly connected to a top end (145).

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