Automobile auxiliary frame welding clamp

Abstract

The utility model relates to an automobile auxiliary frame welding clamp which comprises a rack, an auxiliary frame fixing unit used for clamping an automobile auxiliary frame is arranged on the rack, and a rear suspension support fixing unit which is distributed on one side of the auxiliary frame fixing unit and used for fixing a rear suspension support assembly is arranged on the rack. A front suspension support fixing unit used for enabling the front suspension support reinforcing plate to be attached to the auxiliary frame and fixing the position of the front suspension support is arranged below the rack. The automobile auxiliary frame, the front suspension support and the rear suspension support are welded on the same rack, the welding steps are reduced, the production cycle is accelerated, the rear suspension support and the front suspension support are effectively fixed and limited through the rear suspension support fixing unit and the front suspension support fixing unit, and the production efficiency is improved. And the accuracy of the welding position is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production and manufacturing, in particular to an automobile subframe welding fixture. Background Art

[0002] The automotive subframe is a crucial component of a vehicle, supporting components such as the engine and suspension. Forming the subframe primarily requires welding multiple components together, requiring multiple fixtures and multiple welds. Simultaneously, various accessories are welded to the subframe to facilitate the installation of other parts and enhance the subframe's strength. Since these accessories need to be assembled and welded before being connected to the subframe, separate welding increases the welding cycle and production time. Therefore, a subframe welding fixture was designed and developed to address this issue. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model proposes a welding fixture for automobile subframe.

[0004] The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0005] A welding fixture for an automobile subframe includes a platform, a subframe fixing unit for clamping the automobile subframe is provided on the platform, a rear suspension bracket fixing unit is provided on the platform and is distributed on one side of the subframe fixing unit to fix the rear suspension bracket assembly, and a front suspension bracket fixing unit is provided below the platform for making a front suspension bracket reinforcement plate fit against the subframe and fixing the position of the front suspension bracket.

[0006] The rear suspension bracket fixing unit includes a No. 1 bearing column installed on the platform to support the left and right brackets in the rear suspension bracket assembly. The No. 1 bearing column is connected to a No. 2 bearing column that supports the rear suspension bracket reinforcement plate in the rear suspension bracket assembly. A No. 1 limiting portion is distributed between the No. 1 bearing columns to limit the distance between the left and right brackets. It also includes a No. 1 clamping mechanism installed on the platform to press the left and right brackets and the reinforcement plate in the rear suspension bracket assembly.

[0007] The beneficial effects of the present invention are as follows: the present invention realizes the welding of the automobile subframe, the front suspension bracket and the rear suspension bracket on the same frame, reduces the welding steps, and speeds up the production cycle. The present invention effectively fixes and limits the rear suspension bracket and the front suspension bracket through the rear suspension bracket fixing unit and the front suspension bracket fixing unit, thereby ensuring the accuracy of the welding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the three-dimensional structure of the rear suspension bracket fixing unit of the utility model Figure 1 ;

[0011] Figure 3 This is a schematic diagram of the three-dimensional structure of the rear suspension bracket fixing unit of the utility model Figure 2 ;

[0012] Figure 4 This is a schematic diagram of the three-dimensional structure of the rear suspension bracket fixing unit of the utility model Figure 3 ;

[0013] Figure 5 This is a schematic diagram of the three-dimensional structure of the front suspension bracket fixing unit of the utility model Figure 1 ;

[0014] Figure 6 This is a schematic diagram of the three-dimensional structure of the front suspension bracket fixing unit of the utility model Figure 2 ;

[0015] Figure 7 This is a schematic diagram of the three-dimensional structure of the front suspension bracket fixing unit of the utility model Figure 3 .

[0016] As shown in the figure: 1. Test bench; 2. Subframe fixing unit; 3. Rear suspension bracket fixing unit; 4. Front suspension bracket fixing unit; 5. No. 2 clamping mechanism; 6. No. 3 clamping mechanism; 31. Load-bearing column; 32. No. 3 limiting part; 33. No. 1 limiting part; 34. No. 1 clamping mechanism; 341. No. 1 cylinder; 342. No. 1 pressure block; 343. No. 2 cylinder; 344. No. 1 positioning pin; 345. No. 4 limiting part; 346. No. 5 limiting part; 347. No. 6 limiting part; 41. No. 2 limiting part; 42. No. 3 cylinder; 43. No. 2 positioning pin; 44. Adapter; 45. Extension; 46. No. 1 lead-out part; 47. No. 2 lead-out part. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention, not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the scope of protection of the present invention.

[0018] like Figures 1 to 7As shown, a welding fixture for automobile subframe comprises a platform 1, on which a subframe fixing unit 2 for clamping the automobile subframe is provided, and on which a rear suspension bracket fixing unit 3 distributed on one side of the subframe fixing unit 2 for fixing the rear suspension bracket assembly is provided, and below the platform 1 a front suspension bracket fixing unit 4 for making the front suspension bracket reinforcement plate fit the subframe and fixing the position of the front suspension bracket is provided; both sides of the platform 1 are provided with a No. 2 clamping mechanism 5 for clamping the front suspension bracket for pre-processing welding of the front suspension bracket, and a No. 3 clamping mechanism 6 for clamping the rear suspension bracket for pre-processing welding of the rear suspension bracket is provided on the side of the platform 1 away from the rear suspension bracket fixing unit 3.

[0019] The rear suspension bracket fixing unit 3 includes a supporting column 31 installed on the platform 1 to support the left and right brackets in the rear suspension bracket assembly, and the supporting columns 31 are connected to a No. 3 limiting part 32 for supporting the rear suspension bracket reinforcement plate in the rear suspension bracket assembly, and a No. 1 limiting part 33 for limiting the distance between the left and right brackets of the rear suspension is distributed between the supporting columns 31, and also includes a No. 1 clamping mechanism 34 installed on the platform 1 to press the left and right brackets and the reinforcement plate in the rear suspension bracket assembly; the supporting column 31 supports the bottom surfaces of the two rear suspension brackets, and the No. 3 limiting part 32 is connected to the side of the supporting column 31 and is distributed along the width direction of the platform 1 to abut against the back of the rear suspension bracket reinforcement plate to limit the position of the rear suspension bracket reinforcement plate.

[0020] The No. 1 clamping mechanism 34 includes a No. 1 cylinder 341 symmetrically distributed in the horizontal direction, and the No. 1 cylinder 341 is provided with a No. 1 pressure block 342 that abuts against the bolt holes of the left and right brackets in the rear suspension bracket assembly. It also includes a No. 2 cylinder 343 installed on the platform 1, and the No. 2 cylinder 343 is provided with a No. 1 positioning pin 344 that cooperates with the positioning hole of the rear suspension bracket reinforcement plate; the No. 1 positioning pin 344 is used to fix the rear suspension bracket reinforcement plate and bear the weight of the rear suspension bracket reinforcement plate.

[0021] Between the No. 3 limiting part 32, there is a No. 4 limiting part 345 that abuts against the middle part of the back side of the rear suspension bracket reinforcement plate for limiting. The No. 4 limiting part 345 is also matched with the No. 5 limiting part 346 that abuts against the middle part of the front side of the rear suspension bracket reinforcement plate in the rear suspension bracket assembly; the No. 4 limiting part 345 and the No. 5 limiting part 346 are both installed on the platform 1; the platform 1 is provided with a No. 6 limiting part 347 that is symmetrically distributed in the horizontal direction to fit with the side of the rear suspension bracket.

[0022] There are two No. 1 pressure blocks 342 distributed in the vertical direction, and two No. 1 positioning pins 344 are symmetrically arranged in the horizontal direction; as shown in the figure, two screw mounting holes are provided on the rear suspension bracket in the height direction, and there are two No. 1 pressure blocks 342 distributed in the vertical direction to correspond one-to-one with the screw mounting holes on the rear suspension bracket to ensure the limiting accuracy; there are two No. 1 limiting parts 33 symmetrically arranged in the horizontal direction, which respectively cooperate with the left and right brackets in the rear suspension bracket assembly, and the cross-section of the No. 1 limiting part 33 is L-shaped, and the top of the No. 1 limiting part 33 and the end of the L-shaped protrusion are respectively fitted with the two screw mounting holes on the rear suspension bracket to limit the distance between the left and right brackets in the rear suspension bracket assembly to ensure that the rear suspension bracket reinforcement plate and the left and right brackets in the rear suspension bracket assembly are accurately matched.

[0023] The front suspension bracket fixing unit 4 includes a No. 2 limiting part 41 for pressing the front end of the front suspension bracket. The No. 2 limiting part 41 is connected to a No. 3 cylinder 42 installed above and below the platform 1. The No. 3 cylinder 42 is connected to a No. 2 positioning pin 43 for positioning the front suspension bracket reinforcement plate.

[0024] There are two No. 2 positioning pins 43 , and a connecting portion 44 is provided between the No. 3 cylinder 42 and the No. 2 positioning pin 43 . An extending portion 45 for limiting the in-position sensor is provided on the connecting portion 44 .

[0025] The front suspension brackets are symmetrically arranged with two in the horizontal direction, and each front suspension bracket is equipped with two No. 2 limiting parts 41, and each No. 2 limiting part 41 is symmetrically arranged in the horizontal direction; since the No. 3 cylinder 42 needs to drive the No. 2 positioning pin 43 and the No. 2 limiting part 41 to move simultaneously to fix the left and right front suspension brackets and the front suspension bracket reinforcement plate at the same time, the No. 3 cylinder 42 is tilted; the No. 2 limiting part 41 is L-shaped, one side is connected to the side of the No. 3 cylinder 42, and the top of the No. 2 limiting part 41 is provided with a No. 1 lead-out part 4 6. The part where the No. 1 lead-out portion 46 abuts against the front suspension bracket is an inclined surface. The No. 1 lead-out portion 46 abuts against the left and right front suspension brackets to limit the left and right front suspension brackets; the adapter portion 44 is T-shaped, and a No. 2 lead-out portion 47 is provided at the top of the adapter portion 44. The No. 2 lead-out portion 47 abuts against the corresponding front suspension bracket reinforcement plate, so that the front suspension bracket reinforcement plate is in close contact with the lower end surface of the automobile subframe, and at the same time cooperates with the front suspension bracket reinforcement plate through the No. 2 positioning pin 43 to limit and fix the position of the front suspension bracket reinforcement plate.

[0026] In the present invention, during production, the first step is: the subframe fixing unit 2 fixes the subframe, and at the same time, the front suspension bracket and the rear suspension bracket are placed on the second clamping mechanism 5 and the third clamping mechanism 6 manually or by a handling device for pre-treatment welding;

[0027] Step 2: Manually or through a handling device, mate the pre-treated rear suspension bracket with the bearing column 31 and the No. 1 limiting portion 33. Then, the No. 1 cylinder 341 drives the No. 1 pressing block 342 to press the rear suspension bracket. Then, mate the rear suspension bracket reinforcement plate with the No. 3 limiting portion 32, the No. 3 limiting portion 32 and the No. 5 limiting portion 346. Then, the No. 2 cylinder 343 drives the No. 1 positioning pin 344 to fix the position of the rear suspension bracket reinforcement plate.

[0028] Step 3: The pre-treated front suspension bracket and front suspension bracket reinforcement plate are attached to the lower surface of the vehicle subframe manually or by a handling device. Then, the No. 3 cylinder 42 drives the No. 2 positioning pin 43 and the No. 2 limiter 41 to move simultaneously to fix the corresponding front suspension bracket and front suspension bracket reinforcement plate in position.

[0029] Step 4: After all parts are fixed, the welding robot starts welding.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An automobile subframe welding fixture, characterized by: The invention comprises a platform (1), wherein a subframe fixing unit (2) for clamping a subframe of an automobile is provided on the platform (1), a rear suspension bracket fixing unit (3) distributed on one side of the subframe fixing unit (2) for fixing a rear suspension bracket assembly is provided on the platform (1), and a front suspension bracket fixing unit (4) for making a front suspension bracket reinforcement plate fit with the subframe and fixing the position of the front suspension bracket is provided below the platform (1).

2. The automobile subframe welding fixture according to claim 1, characterized in that: The rear suspension bracket fixing unit (3) includes a supporting column (31) installed on the platform (1) to support the left and right brackets in the rear suspension bracket assembly, each of the supporting columns (31) is connected to a third limiting portion (32) for pressing against the back of the rear suspension bracket reinforcement plate in the rear suspension bracket assembly, a first limiting portion (33) for limiting the distance between the left and right rear suspension brackets is distributed between the supporting columns (31), and also includes a first clamping mechanism (34) installed on the platform (1) to press the left and right brackets and the reinforcement plate in the rear suspension bracket assembly.

3. The automobile subframe welding fixture according to claim 2, characterized in that: The No. 1 clamping mechanism (34) includes a No. 1 cylinder (341) symmetrically distributed in the horizontal direction, the No. 1 cylinder (341) is provided with a No. 1 pressure block (342) that abuts against the bolt holes of the left and right brackets in the rear suspension bracket assembly, and also includes a No. 2 cylinder (343) installed on the platform (1), the No. 2 cylinder (343) is provided with a No. 1 positioning pin (344) that cooperates with the positioning hole of the rear suspension bracket reinforcement plate.

4. The automobile subframe welding fixture according to claim 3, characterized in that: A fourth limiting portion (345) is distributed between the third limiting portion (32) and is engaged with the middle portion of the back side of the rear suspension bracket reinforcement plate for limiting the position. The fourth limiting portion (345) is also matched with a fifth limiting portion (346) which is engaged with the middle portion of the front side of the rear suspension bracket reinforcement plate in the rear suspension bracket assembly.

5. The automobile subframe welding fixture according to claim 3, characterized in that: There are two No. 1 pressing blocks (342) distributed in the vertical direction, and two No. 1 positioning pins (344) are symmetrically arranged in the horizontal direction.

6. The automobile subframe welding fixture according to claim 1, characterized in that: The front suspension bracket fixing unit (4) includes a No. 2 limiting portion (41) for pressing against the front end of the front suspension bracket, the No. 2 limiting portion (41) is connected to a No. 3 cylinder (42) installed above and below the platform (1), and the No. 3 cylinder (42) is connected to a No. 2 positioning pin (43) for positioning the front suspension bracket reinforcement plate.

7. The automobile subframe welding fixture according to claim 6, characterized in that: There are two No. 2 positioning pins (43), a connecting portion (44) is provided between the No. 3 cylinder (42) and the No. 2 positioning pin (43), and an extending portion (45) for limiting the in-position sensor is provided on the connecting portion (44).

8. The automobile subframe welding fixture according to claim 6, characterized in that: Two front suspension brackets are symmetrically arranged in the horizontal direction, and each front suspension bracket is matched with two No. 2 limiting parts (41), and each No. 2 limiting part (41) is symmetrically arranged in the horizontal direction.

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