Axle housing air chamber support welding tool

Abstract

The utility model discloses an axle housing air chamber support welding tool, and relates to the technical field of automobile part welding. The tool comprises a tool bottom plate, a positioning area similar to a workpiece bottom plate of the axle housing air chamber support in shape is arranged on the upper surface of the tool bottom plate, and two positioning pins are arranged at the positions, corresponding to a first through hole and a circular groove of the axle housing air chamber support, of the positioning area respectively. A side plate positioning block is arranged on the outer side, corresponding to the arc-shaped mounting part of the axle housing air chamber support workpiece side plate, of the positioning area, an inclined plane is arranged on the side, facing the positioning area, of the side plate positioning block, and a positioning hole corresponding to the third through hole of the arc-shaped mounting part is formed in the inclined plane; and a first tension bolt matched with the positioning hole is arranged on the positioning hole. Compared with the prior art, the axle housing air chamber support can solve the problems that an existing axle housing air chamber support is unstable in quality during manufacturing, and batch rapid production cannot be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts welding, in particular to a welding tool for a bridge housing air chamber bracket. Background Art

[0002] The axle housing air chamber bracket is one of the important parts of the automobile braking system. Its main function is to connect the brake air chamber with the axle, ensure that the thrust output by the brake air chamber is transmitted to the axle braking system in a certain form, and to locate and install the brake camshaft and ensure the rotation of the brake camshaft. There is a structure such as Figures 1 to 3 The bridge housing air chamber support shown includes a workpiece bottom plate 101 and a workpiece side plate 102, and a plurality of reinforcing ribs 103 are arranged between the workpiece bottom plate 101 and the workpiece side plate 102; a first through hole 104 is arranged at one end of the workpiece bottom plate 101, and a circular groove 105 is arranged at the bottom of the other end, and a side plate mounting portion 106 is also arranged at the other end of the workpiece bottom plate 101, and the workpiece side plate 102 is obliquely arranged on the upper surface of the side plate mounting portion 106 and forms an angle ɑ with the workpiece bottom plate 101; two arc-shaped mounting portions 107 protruding outward are arranged on one side of the workpiece side plate 102, and a third through hole 108 is arranged on the arc-shaped mounting portion 107, and the center points of the two third through holes 108 are on the same vertical plane, and the hole wall thickness of the third through hole 108 is H, and on the same horizontal plane, the distance between the center point of the third through hole 108 and the center point of the circular groove 105 is L.

[0003] At present, the manufacturing method of this bridge housing air chamber bracket is machining after welding, but this method has the following problems: 1. Machining is performed after welding, and the corresponding tooling structure is complex. Each clamping process during machining is relatively complicated, and the consistency of clamping is difficult to ensure; 2. The relative position between the workpiece bottom plate 101 and the workpiece side plate 102 is difficult to control, which makes it difficult to control the angle ɑ, the hole wall thickness H and the distance L; the above problems lead to unstable quality of the bridge housing air chamber bracket during manufacturing and cannot be achieved in rapid mass production. Utility Model Content

[0004] The utility model aims to provide a bridge housing air chamber bracket welding tool, which can solve the problems that the bridge housing air chamber bracket has unstable quality during manufacturing and cannot realize rapid batch production.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is: this bridge housing air chamber bracket welding tool includes a tool base plate, the upper surface of the tool base plate is provided with a positioning area with a shape similar to the workpiece base plate of the bridge housing air chamber bracket, the positioning area is respectively provided with two positioning pins at the corresponding positions of the first through hole and the circular groove of the bridge housing air chamber bracket, the positioning area is provided with a side plate positioning block on the outer side of the arc-shaped mounting portion of the side plate of the bridge housing air chamber bracket workpiece, the side plate positioning block is provided with an inclined surface on the side facing the positioning area, the inclined surface is provided with a positioning hole corresponding to the third through hole of the arc-shaped mounting portion, and the positioning hole is provided with a first tightening bolt adapted thereto.

[0006] In the above technical solution, a more specific technical solution may also be: a pressing plate is further provided on the tooling bottom plate, a second tightening bolt is installed on the pressing plate, and one end of the pressing plate is located above the positioning area.

[0007] Furthermore, the bottom of the side plate positioning block is fixedly connected to the workpiece bottom plate by a third tightening bolt.

[0008] Furthermore, there are at least two third tightening bolts.

[0009] Furthermore, there are two positioning holes.

[0010] Furthermore, the upper surface of the tooling bottom plate is square.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0012] During welding, the utility model accurately positions the pre-processed workpiece bottom plate and workpiece side plates through the tooling bottom plate, positioning pins, side plate positioning blocks, inclined surfaces and positioning holes and other components, and fixes and presses them through tensioning bolts and pressure plates. The relative position between the workpiece bottom plate and the workpiece side plates is accurately controlled, so that the bridge housing air chamber bracket after welding is stable in quality and accurate in size. The angle ɑ between the workpiece side plate and the workpiece bottom plate, the hole wall thickness H of the third through hole on the arc-shaped mounting portion, and the distance L between the center point of the third through hole and the center point of the circular groove on the same horizontal plane can all maintain production stability and consistency, and can achieve rapid batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the bridge housing air chamber bracket;

[0014] Figure 2 yes Figure 1 Left view of;

[0015] Figure 3 yes Figure 1 A top view of

[0016] Figure 4 It is a structural schematic diagram of the utility model;

[0017] Figure 5 yes Figure 4 Side view of the center tooling base plate and side plate locating blocks. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0019] like Figure 4 and Figure 5 The bridge housing air chamber bracket welding tool shown includes a tool base plate 1, and a positioning area 2 with a shape similar to the workpiece base plate of the bridge housing air chamber bracket is provided on the upper surface of the tool base plate 1, and the positioning area 2 is respectively provided with two positioning pins 3 at the corresponding positions of the first through hole and the circular groove of the bridge housing air chamber bracket, and the positioning area 2 is provided with a side plate positioning block 4 at the outer side of the corresponding position of the arc-shaped mounting portion of the side plate of the bridge housing air chamber bracket workpiece, and the side plate positioning block 4 is provided with an inclined surface on the side facing the positioning area, and a positioning hole 5 corresponding to the third through hole of the arc-shaped mounting portion is provided on the inclined surface, and a first tightening bolt 6 adapted thereto is provided on the positioning hole 5; a pressure plate 7 is also provided on the tool base plate 1, and a pad 8 is provided on the tool base plate 1 on the outer side of the positioning area 2, and one end of the pressure plate 7 is overlapped on the pad 8, and the other end is located above the positioning area 2. A strip hole is provided on the pressing plate 7, and a second tightening bolt 9 is passed through the strip hole. A threaded hole is provided below the strip hole on the tooling base plate 1. The bottom of the second tightening bolt 9 is threadedly connected to the threaded hole, and the head of the second tightening bolt 9 is crimped to the upper surface of the pressing plate 7.

[0020] The bottom of the side plate positioning block 4 is fixedly connected to the workpiece bottom plate 1 through the third tension bolts 10. There are at least two third tension bolts 10. There are two positioning holes 5.

[0021] The welding method using the above-mentioned bridge housing air chamber bracket welding tool comprises the following steps:

[0022] A. The workpiece bottom plate and workpiece side plate of the bridge housing air chamber bracket are processed separately;

[0023] B. Place the workpiece base plate flat on the positioning area of ​​the tooling base plate 1, and fit the first through hole and the circular groove onto the two positioning pins 3 respectively;

[0024] C. Place the bottom of the workpiece side plate on the side plate mounting portion of the workpiece bottom plate 1, with the arc-shaped mounting portion of the workpiece side plate close to the inclined surface of the side plate positioning block 4, and use the first tensioning bolt 6 to pass through the third through hole and the positioning hole 5 and then tighten it to fix the workpiece side plate and the side plate positioning block 4 together;

[0025] D. Tighten the second tension bolt 9 and press the pressure plate 7 to prevent the bottom plate of the workpiece from tilting during welding;

[0026] E. Weld the workpiece bottom plate, workpiece side plate and multiple reinforcing ribs together to obtain the finished bridge housing air chamber bracket.

[0027] In this embodiment, the pressing plate 7 is long and the upper surface of the tooling base plate 1 is square. The positioning area 2 can be drawn with a dotted line to mark the edge for positioning so as to accurately place the workpiece base plate. The angle β between the inclined surface and the tooling base plate 1 corresponds to the angle ɑ between the workpiece side plate and the workpiece base plate. The outer diameters of the two locating pins 3 are similar to the inner diameters of the first through hole and the circular groove, respectively, so that the first through hole and the circular groove can be accurately mounted on the locating pins. The height of the pad 8 is similar to the height of the workpiece base plate, so that the pressing plate 7 can maintain balance when pressed to prevent loosening.

[0028] During welding, the utility model accurately positions the pre-processed workpiece bottom plate and workpiece side plates through the tooling bottom plate, positioning pins, side plate positioning blocks, inclined surfaces and positioning holes and other components, and fixes and presses them through tensioning bolts and pressure plates. The relative position between the workpiece bottom plate and the workpiece side plates is accurately controlled, so that the bridge housing air chamber bracket after welding is stable in quality and accurate in size. The angle ɑ between the workpiece side plate and the workpiece bottom plate, the hole wall thickness H of the third through hole on the arc-shaped mounting portion, and the distance L between the center point of the third through hole and the center point of the circular groove on the same horizontal plane can all maintain production stability and consistency, and can achieve rapid batch production.

Claims

1. A welding tool for a bridge housing air chamber bracket, characterized in that: It includes a tooling base plate, the upper surface of which is provided with a positioning area with a shape similar to the workpiece base plate of the bridge housing air chamber bracket, the positioning area is respectively provided with two positioning pins at the corresponding positions of the first through hole and the circular groove of the bridge housing air chamber bracket, the positioning area is provided with a side plate positioning block on the outer side of the corresponding position of the arc-shaped mounting portion of the workpiece side plate of the bridge housing air chamber bracket, the side plate positioning block is provided with an inclined surface on the side facing the positioning area, the inclined surface is provided with a positioning hole corresponding to the third through hole of the arc-shaped mounting portion, and the positioning hole is provided with a first tightening bolt adapted thereto.

2. The welding tool for the bridge housing air chamber bracket according to claim 1 is characterized in that: A pressing plate is also provided on the tooling bottom plate, and a second tightening bolt is installed on the pressing plate. One end of the pressing plate is located above the positioning area.

3. The welding tool for the bridge housing air chamber bracket according to claim 1 or 2, characterized in that: The bottom of the side plate positioning block is fixedly connected to the workpiece bottom plate through a third tightening bolt.

4. The welding tool for the bridge housing air chamber bracket according to claim 3 is characterized in that: There are at least two third tightening bolts.

5. The welding tool for the bridge housing air chamber bracket according to claim 4 is characterized in that: There are two positioning holes.

6. The welding tool for the bridge housing air chamber bracket according to claim 5, characterized in that: The upper surface of the tooling bottom plate is square.

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