Steering column welding fixture

Abstract

The utility model relates to the technical field of automobile accessory production, disclose a steering column welding fixture, including base, be equipped with pipe fitting positioning mechanism and support positioning mechanism on the base, the pipe fitting positioning mechanism includes the positioning base piece and support seat fixed on the base, the positioning base piece is fixed with the positioning mandrel and upper guide block, and the upper guide block is sleeved with the square hole positioning insert block, the square hole positioning insert block includes the positioning portion, the avoidance portion of setting to the oblique and the vertical portion of inserting the upper guide block, the vertical portion passes through the extension end of upper guide and is connected with L type block. The avoidance portion setting of square hole positioning insert block can increase the welding work area of support and pipe fitting junction, thereby avoiding the problem of interference when welding, thereby can improve the welding quality and welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a steering column welding fixture. Background Technology

[0002] With the continuous innovation in the automotive industry, OEM (Original Equipment Manufacturer) factories for various automotive parts have sprung up like mushrooms after rain. These factories exhibit significant differences in manufacturing technology and product quality. The steering column, a crucial component for vehicle operation, is typically constructed by welding multiple parts together, requiring welding fixtures during the welding process. Existing welding fixtures are listed in the attached manual. Figure 5 The system includes a base 1, on which a positioning base 21 and a support base 22 are fixed. A positioning mandrel 23 and a positioning pin 31 are fixed on the positioning base 21. A rectangular insert 26 is also provided on one side of the positioning base. During welding, a bracket 91 is inserted into the positioning pin. One end of a pipe 90 is placed on the support base 22, and the other end is inserted into the mandrel. The rectangular insert 26 is inserted into the square hole of the pipe 90 to position the pipe and the bracket. However, because the rectangular insert 26 is close to the welding point, interference can easily occur, affecting the welding quality and efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a welding fixture for a steering column, which solves the problems of unstable welding quality and low welding efficiency caused by interference during the welding process.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A welding fixture for a steering column includes a base, on which a fitting positioning mechanism and a support positioning mechanism are mounted. The fitting positioning mechanism includes a positioning base block and a support seat fixed on the base. A positioning mandrel and an upper guide block are fixed on the positioning base block, and a square-hole positioning insert is sleeved on the upper guide block. The square-hole positioning insert includes a positioning part, an obliquely arranged clearance part, and a vertical part that is inserted into the upper guide block. An L-shaped block is connected to the protruding end of the vertical part that passes through the upper guide block. The L-shaped block can be used as a handle or as a blocking function, while the clearance part facilitates welding work at the joint between the fitting and the support.

[0006] The bracket positioning mechanism includes two positioning pins fixed on the positioning base block, with the positioning pins extending above the positioning base block.

[0007] The present invention is further configured such that: the support base is formed with a semi-circular hole with an upper opening coaxial with the positioning mandrel, the semi-circular hole can further support and limit the pipe fitting.

[0008] The present invention is further configured such that: a stepped push rod is provided on the side of the support base away from the positioning base block, which is coaxially arranged with the positioning mandrel. The stepped push rod is connected to a telescopic cylinder that drives it to move. The telescopic cylinder is fixed on a telescopic cylinder seat, which is fixed on the base. The step push rod is moved by the telescopic cylinder, which can facilitate the insertion of the pipe into the bracket.

[0009] The present invention is further configured such that: the large end of the stepped push rod is inserted into the guide support, the guide support is fixed on the base, and the guide support provides guiding support for the stepped push rod.

[0010] The present invention is further configured such that: a groove is formed on the positioning base block, and a thrust bearing is provided in the groove, the thrust bearing being sleeved on the positioning mandrel; the thrust bearing can reduce the rotational resistance of the pipe when it is pressed by the step push rod.

[0011] The thrust bearing is provided with multiple retaining pins on its outer side. The retaining pins are fixed to the side wall of the settling tank and are used to prevent the thrust bearing from falling out of the settling tank.

[0012] The outstanding effect of this utility model is:

[0013] Compared with existing technologies, the avoidance part of the square hole positioning block can increase the welding working area at the joint of the bracket and the pipe fitting, thereby avoiding interference during welding and thus improving welding quality and welding efficiency.

[0014] The L-shaped block setting of the square hole positioning block facilitates the movement of the block during operation.

[0015] The thrust bearing facilitates the rotation and alignment of pipe fittings during installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A magnified view of a specific area (A);

[0018] Figure 3 for Figure 1 A sectional view of BB;

[0019] Figure 4 This is a schematic diagram of the steering column involved in this utility model;

[0020] Figure 5 The original welding fixture for the steering column.

[0021] Attached label: 1, base;

[0022] 2. Pipe fitting positioning mechanism; 21. Positioning base block; 22. Support seat; 23. Positioning mandrel; 24. Upper guide block; 25. Square hole positioning insert block;

[0023] 211. Settling tank;

[0024] 221. Semicircular hole;

[0025] 251. Positioning part; 252. Clearance part; 253. Vertical part; 254. L-shaped block;

[0026] 3. Bracket positioning mechanism; 31. Positioning pin;

[0027] 40. Thrust bearing; 41. Stop pin;

[0028] 90. Pipe fittings; 91. Brackets; 92. Square holes. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] The following is for reference Figures 1 to 4 The present invention will be described as follows:

[0031] A steering column welding fixture includes a base 1, on which a pipe positioning mechanism 2 and a support positioning mechanism 3 are provided. The pipe positioning mechanism 2 includes a positioning base block 21 and a support seat 22 fixed on the base 1. The support seat 22 has a semi-circular hole 221 with an upper opening coaxial with a positioning mandrel 23. The positioning base block 21 is fixed with a positioning mandrel 23 and an upper guide block 24. A square hole positioning insert 25 is sleeved on the upper guide block 24. The square hole positioning insert 25 includes a positioning part 251, an obliquely arranged clearance part 252, and a vertical part 253 inserted into the upper guide block. The vertical part 253 passes through the protruding end of the upper guide block 24 and is connected to an L-shaped block 254. The support positioning mechanism 3 includes two positioning pins 31 fixed on the positioning base block 21, with the positioning pins extending above the positioning base block.

[0032] The support base 22 is provided with a stepped push rod 26 on the side away from the positioning base block 21, which is coaxial with the positioning spindle 23. The stepped push rod 26 is connected to a telescopic cylinder 27 that drives it to move. The telescopic cylinder 27 is fixed on the telescopic cylinder seat 28, and the telescopic cylinder seat 28 is fixed on the base 1.

[0033] The positioning base block 21 has a groove 211 formed on it, and a thrust bearing 40 is provided in the groove 211. The thrust bearing 40 is sleeved on the positioning mandrel 23. Multiple stop pins 41 are provided on the outside of the thrust bearing 40, and the stop pins 41 are fixed on the side wall of the groove 211.

[0034] Working principle: First, insert the two holes of the bracket 91 into the corresponding positioning pins 31, and the bracket will then be placed against the positioning base block 21, thereby completing the positioning of the bracket.

[0035] Second, place the pipe fitting 90 in the semi-circular hole of the support base, and then move it towards the bracket. After the end of the pipe fitting 90 passes through the bracket, it presses against the thrust bearing. At this time, one end of the pipe fitting is inserted into the positioning mandrel. Then, the telescopic cylinder drives the stepped push rod to move, and the small end of the stepped push rod is inserted into the other end of the pipe fitting, thereby fixing the center line of the pipe fitting. At the same time, the stepped push rod can push the pipe fitting against the thrust bearing, thereby ensuring the axial position of the pipe fitting.

[0036] Third, rotate the pipe fitting so that the square hole 92 on the pipe fitting is roughly aligned with the positioning part, and then press down the L-shaped block. The L-shaped block drives the positioning part 251 to move down and insert into the square hole, thereby preventing the pipe fitting 90 from moving and completing the positioning work of the pipe fitting. After the positions of the pipe fitting and the bracket 91 are determined, the welding work can be carried out.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A steering column welding fixture, comprising a base (1), wherein a pipe positioning mechanism (2) and a bracket positioning mechanism (3) are provided on the base (1); characterized in that: The pipe positioning mechanism (2) includes a positioning base block (21) and a support base (22) fixed on the base (1). The positioning base block (21) is fixed with a positioning spindle (23) and an upper guide block (24). A square hole positioning plug (25) is sleeved on the upper guide block (24). The square hole positioning plug (25) includes a positioning part (251), an obliquely arranged clearance part (252), and a vertical part (253) sleeved on the upper guide block. The vertical part (253) passes through the protruding end of the upper guide block (24) and is connected to an L-shaped block (254).

2. The steering column welding fixture according to claim 1, characterized in that: The support base (22) has a semi-circular hole (221) with an upper opening that is coaxial with the positioning mandrel (23).

3. The steering column welding fixture according to claim 1, characterized in that: The support base (22) is provided with a stepped push rod (26) on the side away from the positioning base block (21) and coaxially arranged with the positioning spindle (23). The stepped push rod (26) is connected to a telescopic cylinder (27) that drives it to move.

4. A steering column welding fixture according to claim 3, characterized in that: The large end of the stepped push rod (26) is inserted into the guide support.

5. A steering column welding fixture according to claim 3, characterized in that: The positioning base block (21) has a groove (211) formed on it, and a thrust bearing (40) is provided in the groove (211). The thrust bearing (40) is sleeved on the positioning mandrel (23). The thrust bearing (40) has multiple stop pins (41) on its outer side, and the stop pins (41) are fixed on the side wall of the sink (211).

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