Welding tool for automobile steering column

Abstract

The utility model relates to the field of tool clamps, in particular to an automobile steering column welding tool. The tool comprises a support, a supporting table, a positioning column and a pressing mechanism, the supporting table is used for placing a mounting plate, the pressing mechanism presses the mounting plate through a pressing plate, the positioning column is used for fixing a tubular column body, and a locking ring further fixes the top of the tubular column body. In addition, the positioning column is designed into the central column and the step column, and the locking ring is in threaded connection with the step column, so that the stability and the accuracy of the pipe column body are ensured. The support is further provided with a positioning pin and a guide sleeve, so that accurate positioning of the tubular column body is ensured. Automatic pressing operation is achieved through an air cylinder and a connecting rod in the pressing mechanism. According to the tool, the welding precision and efficiency are improved, the production cost is reduced, and meanwhile the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tooling fixtures, in particular to an automobile steering column welding tool. BACKGROUND

[0002] The automobile steering column assembly is an important part of the automobile steering system, and its performance directly affects the stability and safety of vehicle control. In the automobile manufacturing process, the welding quality of the steering column is particularly important.

[0003] The steering column generally includes a column body and a mounting plate, one end of the column body is welded with the mounting plate. When welding the two, the column body and the mounting plate need to be fixed first. The common fixing methods at present include manual clamp fixing, simple positioning device, etc. Manual clamp fixing mainly relies on the experience and technical level of the operator, and the positioning of the column body and the mounting plate is realized by manually adjusting the clamp.

[0004] However, this method not only has high labor intensity, but also the positioning accuracy is difficult to guarantee, especially in batch production, the welding quality of the product fluctuates greatly. The simple positioning device usually sets some fixed positioning points on the welding platform, and the column body and the mounting plate are fixed through these positioning points. Although this device can partially improve the positioning accuracy, due to its simple structure, it cannot comprehensively solve the problems of column body shaking and angle inaccuracy. CONTENT OF THE INVENTION

[0005] In order to facilitate the welding of the column body and the mounting plate, and at the same time improve the welding quality, the present application provides an automobile steering column welding tool.

[0006] The automobile steering column welding tool provided by the present application adopts the following technical scheme:

[0007] An automobile steering column welding tool, comprising a support and a support table, a positioning column and a pressing mechanism arranged on the support;

[0008] The support table is used for placing the mounting plate, and the pressing mechanism comprises a pressing plate for pressing the mounting plate; the positioning column is located on the support table, and the column body is sleeved on the positioning column;

[0009] The positioning column is further provided with a locking ring for fixing the top of the column body.

[0010] By adopting the above technical scheme, the mounting plate is supported by the support table, and the pressing plate can press the mounting plate, at the same time, the positioning column is used to position the column body, and the locking ring is used for fixing, so as to ensure that the relative position accuracy of the column body and the mounting plate, the perpendicularity of the column body meet the welding requirements, so as to ensure the welding quality.

[0011] Preferably, the locking ring is sleeved on the top of the positioning column, and the locking ring is provided with an abutting portion abutting against the pipe wall of the pipe column body.

[0012] By adopting the technical scheme, the locking ring abuts against the pipe column body through the abutting portion, so that the centering degree of the pipe column body is controlled, thereby ensuring the position accuracy of the pipe column body and helping to improve the welding quality.

[0013] Preferably, the positioning column comprises a center column and a stepped column, the stepped column is arranged on the top of the center column, and the diameter of the stepped column is smaller than that of the center column.

[0014] The inner wall of the locking ring is stepped and has a first side and a second side, the diameter of the circle on which the first side is located is greater than that of the circle on which the second side is located, the second side abuts against the side wall of the stepped column, and the first side is the abutting portion and abuts against the side wall of the pipe column body.

[0015] By adopting the technical scheme, the stepped column is arranged to facilitate the connection of the locking ring and the positioning column, and the vertical limiting of the locking ring can be realized through the step surface between the first side and the second side. The abutting of the first side against the side wall of the stepped column can effectively improve the stability of the locking ring, and the abutting of the second side against the pipe column body can effectively improve the stability of the pipe column body.

[0016] Preferably, the locking ring is threadedly connected with the stepped column, and the first side is arranged as an inclined surface.

[0017] By adopting the technical scheme, the locking ring is threadedly connected with the stepped column, which can effectively improve the stability of the locking ring and the stability of the pipe column body.

[0018] Preferably, a process hole is arranged on the side wall of the pipe column body, and a positioning pin is further arranged on the support and is in plug-in cooperation with the process hole.

[0019] By adopting the technical scheme, the positioning pin and the process hole can avoid the rotation of the pipe column body, thereby improving the positioning accuracy of the pipe column body and effectively improving the welding quality.

[0020] Preferably, the positioning pin comprises a guide pin and a fixed core, a guide sleeve is further arranged on the support, the guide pin is in plug-in cooperation with the guide sleeve, the fixed core is fixedly connected with the guide pin, and the fixed core is in plug-in cooperation with the process hole.

[0021] By adopting the technical scheme, the arrangement of the guide sleeve and the guide pin can ensure the position accuracy of the fixed core, thereby improving the positioning accuracy of the pipe column body.

[0022] Preferably, the pressing mechanism further comprises a gas cylinder and a connecting rod, the pressing plate is hingedly connected with the support, the gas cylinder is fixedly connected with the support, and the two ends of the connecting rod are respectively connected with the pressing plate and the output end of the gas cylinder.

[0023] By adopting the technical scheme, the automatic working of the pressing mechanism can be realized through the air cylinder, and the convenience of clamping of the mounting plate is improved.

[0024] Preferably, the support table is further provided with a fixing pin, and the mounting plate is provided with a mounting hole, and the fixing pin is inserted and matched with the mounting hole.

[0025] By adopting the technical scheme, the fixing pin can be matched with the positioning column to accurately position the mounting plate, which helps to improve the welding quality.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The combination of the support table and the pressing plate can ensure the stable placement and pressing of the mounting plate, prevent the movement of the mounting plate during welding, and improve the welding precision and quality;

[0028] 2. The cooperation of the positioning column and the locking ring can accurately control the position of the pipe column body, especially through the abutment of the abutment part of the locking ring and the pipe wall of the pipe column body, effectively preventing the shaking and angle deviation of the pipe column body, and ensuring the perpendicularity and centricity of the welding part;

[0029] 3. The threaded connection design of the locking ring and the stepped column improves the stability of the locking ring, and further improves the positioning accuracy of the pipe column body and the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the automobile steering column welding tool in the embodiment of the present application;

[0031] Figure 2 Mainly used to show the specific structure of the positioning column and the locking ring.

[0032] Markings in the drawings: 1, support; 11, positioning pin; 111, guide pin; 112, fixed core; 12, guide sleeve; 13, fixing pin; 2, support table; 3, positioning column; 31, center column; 32, stepped column; 4, pressing mechanism; 41, pressing plate; 42, connecting rod; 43, air cylinder; 5, locking ring; 51, first side; 52, second side; 6, pipe column body; 7, mounting plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings Figures 1-2 The present application will be further described in detail.

[0034] The automobile steering column welding tool provided by the embodiment of the present application, with reference to Figure 1It comprises a support 1, a support table 2, a positioning column 3 and a pressing mechanism 4 arranged on the support 1. The support table 2 is used to place the mounting plate 7, the pressing mechanism 4 comprises a pressing plate 41 used to press the mounting plate 7, and the positioning column 3 is arranged on the support table 2 and the pipe column body 6 is sleeved on the positioning column 3. The locking ring 5 is further arranged on the positioning column 3 and is used to fix the top of the pipe column body 6.

[0035] Specifically, the support table 2 comprises a bottom plate and a plurality of support legs fixed on the bottom plate. The surface of the support table 2 is flat, which can ensure the stable placement of the mounting plate 7. The material of the support table 2 can be selected as high-strength steel to increase its carrying capacity and durability.

[0036] The pressing mechanism 4 comprises the pressing plate 41, the air cylinder 43 and the connecting rod 42. The pressing plate 41 is connected with the support 1 through a hinge and can rotate freely. The air cylinder 43 is fixed on the support 1, and its output end is connected with the pressing plate 41 through the connecting rod 42. When the air cylinder 43 extends and retracts, the pressing plate 41 is driven to move up and down through the connecting rod 42, so as to realize the pressing and releasing of the mounting plate 7. The lower surface of the pressing plate 41 can be provided with a rubber pad to increase the friction and prevent the mounting plate 7 from sliding during the pressing process. The selection of the air cylinder 43 can be different specifications according to the actual demand, for example, a longer stroke air cylinder 43 can be selected to adapt to mounting plates 7 of different heights.

[0037] The support table 2 is further provided with a fixing pin 13, and the mounting plate 7 is provided with a mounting hole, and the fixing pin 13 is inserted and matched with the mounting hole. The material of the fixing pin 13 can be selected as high-strength steel to increase its durability and stability. The length of the fixing pin 13 can be adjusted according to the thickness of the mounting plate 7 to ensure that it is firmly fixed on the mounting plate 7. The top of the fixing pin 13 can be provided with a handle to facilitate the installation and disassembly of the operator.

[0038] Referring to Figure 2 The positioning column 3 comprises a center column 31 and a stepped column 32, the stepped column 32 is arranged at the top of the center column 31 and the diameter of the stepped column 32 is smaller than that of the center column 31. The material of the center column 31 can be selected as high-strength alloy steel to increase its rigidity and durability. The bottom of the center column 31 can be fixed on the support table 2 through bolts to ensure its stability.

[0039] In the embodiment of the present application, the inner wall of the locking ring 5 is stepped and has a first side 51 and a second side 52, the diameter of the circle on which the first side 51 is located is greater than the diameter of the circle on which the second side 52 is located, and the second side 52 is screwed with the stepped column 32. The first side 51 is an abutting part and abuts with the side wall of the pipe column body 6. The locking ring 5 is threadedly connected with the stepped column 32, which can effectively improve the stability of the locking ring 5 and the stability of the pipe column body 6. Preferably, the first side 51 can be provided as an inclined surface, which can better guide the pipe column body 6 to be centered during locking and improve the positioning accuracy.

[0040] In addition, the locking ring 5 can also abut with the inner wall of the pipe column body 6, so as to realize the positioning and fixing of the pipe column body 6. The side wall of the stepped column 32 can also be provided as a non-threaded smooth surface, the locking ring 5 is directly sleeved on the stepped column 32, and the second side 52 is fitted with the side wall of the stepped column 32.

[0041] A process hole is formed in the side wall of the pipe column body 6, and a positioning pin 11 is further provided on the support 1 and is insertedly connected with the process hole. The positioning pin 11 comprises a guide pin 111 and a fixed core 112, and a guide sleeve 12 is further provided on the support 1, the guide pin 111 is insertedly connected with the guide sleeve 12, the fixed core 112 is fixedly connected with the guide pin 111, and the fixed core 112 is insertedly connected with the process hole. The provision of the guide sleeve 12 and the guide pin 111 can ensure the positional accuracy of the fixed core 112, thereby improving the positioning accuracy of the pipe column body 6. The material of the guide pin 111 can be selected as high-hardness alloy steel to increase its wear resistance and service life. A conical head can be provided at the front end of the fixed core 112 to facilitate insertion into the process hole.

[0042] The implementation principle of the embodiment is that the support 2 supports the mounting plate 7, the pressing plate 41 can press the mounting plate 7, the positioning column 3 is used to position the pipe column body 6, and the locking ring 5 is used to fix the pipe column body 6, so as to ensure that the relative positional accuracy of the pipe column body 6 and the mounting plate 7 and the perpendicularity of the pipe column body 6 meet the welding requirements, thereby ensuring the welding quality. The use of the air cylinder 43 realizes the automation of the pressing mechanism 4 and improves the work efficiency.

[0043] The provision of the positioning pin 11 and the fixed pin 13 further improves the positioning accuracy of the pipe column body 6 and the mounting plate 7 and reduces the possible errors in the welding process. The design of the locking ring 5 not only can fix the top of the pipe column body 6, but also can reduce the resistance in the locking process through the inclined surface design and improve the positioning accuracy.

[0044] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automotive steering column welding fixture, characterized by: The support base (1) is provided with a support table (2), a positioning column (3) and a pressing mechanism (4); The support table (2) is used for placing an installation plate (7), the pressing mechanism (4) comprises a pressing plate (41) used for pressing the installation plate (7), the positioning column (3) is located on the support table (2), and a pipe column body (6) is sleeved on the positioning column (3); The positioning column (3) is further provided with a locking ring (5) used for fixing the top of the pipe column body (6).

2. The automotive steering column welding fixture of claim 1, wherein: The locking ring (5) is sleeved on the top of the positioning column (3), and the locking ring (5) is provided with an abutting portion abutting against the pipe wall of the pipe column body (6).

3. The automotive steering column welding fixture of claim 2, wherein: The positioning column (3) comprises a center column (31) and a stepped column (32), the stepped column (32) is arranged at the top of the center column (31), and the diameter of the stepped column (32) is smaller than that of the center column (31); The inner wall of the locking ring (5) is stepped and has a first side (51) and a second side (52), the diameter of a circle where the first side (51) is located is greater than that of a circle where the second side (52) is located, the second side (52) abuts against the side wall of the stepped column (32), and the first side (51) is the abutting portion and abuts against the side wall of the pipe column body (6).

4. The automotive steering column welding fixture of claim 3, wherein: The locking ring (5) is threadedly connected with the stepped column (32), and the first side (51) is arranged in a slope.

5. The automotive steering column welding fixture of claim 1, wherein: A process hole is formed in the side wall of the pipe column body (6), and the support base (1) is further provided with a positioning pin (11) which is in plug-in cooperation with the process hole.

6. The automotive steering column welding fixture of claim 5, wherein: The positioning pin (11) comprises a guide pin (111) and a fixed core (112), the support base (1) is further provided with a guide sleeve (12), the guide pin (111) is in plug-in cooperation with the guide sleeve (12), the fixed core (112) is fixedly connected with the guide pin (111), and the fixed core (112) is in plug-in cooperation with the process hole.

7. The automotive steering column welding fixture of claim 1, wherein: The pressing mechanism (4) further comprises a cylinder (43) and a connecting rod (42), the pressing plate (41) is hingedly connected with the support base (1), the cylinder (43) is fixedly connected with the support base (1), and the two ends of the connecting rod (42) are respectively connected with the pressing plate (41) and the output end of the cylinder (43).

8. The automotive steering column welding fixture of claim 1, wherein: The support table (2) is further provided with a fixing pin (13), the installation plate (7) is provided with a mounting hole, and the fixing pin (13) is in plug-in cooperation with the mounting hole.

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