Welding and correcting tool for automobile rear axle

Abstract

The utility model discloses an automobile rear axle welding correction tool which comprises a correction workbench and a correction mechanism located on the correction workbench and used after a rear axle end plate is welded, the correction mechanism comprises a front correction seat and a rear correction seat which are arranged in a mirror image mode, a front correction rod assembly is located on the front correction seat, and a rear correction rod assembly is located on the rear correction seat. A front correcting rod assembly is arranged on the front correcting seat, a rear correcting rod assembly is arranged on the rear correcting seat, replaceable correcting adjusting pieces are arranged at the working ends of the front correcting rod assembly and the rear correcting rod assembly, an auxiliary positioning and supporting mechanism is arranged corresponding to the correcting mechanism, and the rear axle is integrally positioned through the positioning and supporting mechanism. And then the two working faces of the welding position of the end plate are shaped through the correcting mechanism, the deviation can be controlled within the qualified range, the end plate can be loaded for use, scrapping treatment is not needed, the production cost is greatly reduced, and the product has better market competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of welding correction, in particular to a welding correction tool for an automobile rear axle. Background Art

[0002] For all fusion welding, there is a large residual stress in the weld and its heat affected zone. The existence of residual stress will cause deformation and cracking of the welded component and reduce its bearing capacity. Due to the influence of residual tensile stress, stress concentration and crack initiation source, the fatigue life of the welded joint is greatly reduced.

[0003] In the field of construction, for example, a Chinese utility model patent with publication number CN205520163U and patent name "Welding Correction Device for Steel Bar Truss" discloses a welding correction device for steel bar truss, which is arranged above a conveyor belt and upstream of a welding head in the direction of travel of the conveyor belt. The welding correction device includes a support frame and a plurality of guide mechanisms arranged on the support frame, wherein the guide mechanism has two guide plates for guiding the direction of the steel bar frame and a bearing arranged at the bottom end of the guide plate. With the aid of the above structure, the welding correction device for steel bar truss of the utility model can correct the direction of the steel bar frame and improve the qualified rate of the steel bar truss.

[0004] However, in the automotive field, especially for the size requirements of the welded end plates of automobile rear axles, after welding, when measured by welding gauges, if the key size of the end plate exceeds the tolerance by more than 1%, there will be safety hazards if it is installed on the vehicle. At present, it can only be scrapped. Since the stability of welding itself is difficult to meet the size requirements of large quantities, the scrap rate is high, which seriously affects the production cost. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides a welding correction tool for an automobile rear axle, which corrects the excess difference caused by deformation through a correction mechanism, reduces the scrap rate, and further controls the production cost.

[0006] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a kind of automobile rear axle welding correction tool, including a correction workbench, on which a correction mechanism for the rear axle end plate after welding is arranged, the correction mechanism includes a front correction seat and a rear correction seat arranged in a mirror image, a front correction rod assembly is arranged on the front correction seat, and a rear correction rod assembly is arranged on the rear correction seat, and replaceable correction adjustment parts are arranged at the working ends of the front correction rod assembly and the rear correction rod assembly, and an auxiliary positioning support mechanism is arranged corresponding to the correction mechanism, and the deviation can be controlled within an acceptable range by shaping the two working surfaces of the end plate.

[0007] In the above technical solution, the front correction rod assembly includes a front correction rod and a front driving mechanism for driving the front correction rod to feed, and the rear correction rod assembly includes a rear correction rod and a rear driving mechanism for driving the rear correction rod to feed.

[0008] In the above technical solution, the working ends of the front correction rod and the rear correction rod are provided with protruding connectors, and the rear end of the correction adjustment piece is provided with a plug-in position. The correction adjustment piece is connected to the protruding connector through the plug-in position, and by replacing the correction adjustment piece, adjustment of different feed amounts can be achieved.

[0009] In the above technical solution, the correction and adjustment member includes a plurality of pads with different thicknesses.

[0010] In the above technical solution, the correction mechanism is provided in two groups, including a first correction mechanism and a second correction mechanism which are arranged in a mirror image.

[0011] In the above technical solution, the first correction mechanism and the second correction mechanism are respectively arranged at two ends of the correction workbench along the same axis.

[0012] In the above technical solution, the auxiliary positioning support mechanism includes a first positioning component and a first positioning support component located on one side of the first correction mechanism, and a second positioning component and a second positioning support component located on one side of the second correction mechanism, which can keep the rear axle in a fixed position and improve the correction effectiveness.

[0013] In the above technical solution, the first positioning assembly includes an adjustable limit stop block assembly, a positioning locking assembly and a first support block.

[0014] In the above technical solution, the second positioning assembly includes a fixed limit stop block assembly and a second support block.

[0015] In the above technical solution, the first positioning support assembly and the second positioning support assembly have the same structure, and both include a positioning support block and a positioning clamping mechanism corresponding to the positioning support block.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the rear axle is positioned as a whole through the positioning support mechanism, and then the two working surfaces of the end plate welding position are shaped through the correction mechanism, so that the deviation can be controlled within the qualified range, and the vehicle can be installed and used without scrapping, which greatly reduces the production cost and is more competitive in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0020] Figure 3 The utility model is equipped with a rear axle structure schematic diagram.

[0021] Figure 4 This is a schematic diagram of the structure of the first positioning component.

[0022] Figure 5 Schematic diagram of the rear axle structure. DETAILED DESCRIPTION

[0023] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] See also Figures 1 to 4A rear axle welding correction tool for automobiles includes a correction workbench 1. The correction workbench 1 includes a base 11 and a work platform 12 arranged on the base 11. Rollers 111 are arranged on the base 11 to facilitate the movement of the correction workbench 1.

[0028] The correction mechanism and the positioning support mechanism are both arranged on the working platform 12, and are used for the correction work of the end plate of the rear axle of the automobile after welding. The specific structure is as follows:

[0029] Since the end plates are respectively welded to the two end faces of the rear axle, in order to improve the correction efficiency, correction mechanisms are set at the positions of the two end plates D, that is, at the two ends of the working platform 12. That is to say, in this scheme, it is preferred to set the number of correction mechanisms to two groups, specifically including a first correction mechanism 31 and a second correction mechanism 32, and the first correction mechanism 31 and the second correction mechanism 32 are set along the same axis to ensure a good correction effect.

[0030] Among them, the first correction mechanism 31 includes a first front correction seat 311 and a first rear correction seat 312, a first front correction rod assembly 313, and a first rear correction rod assembly 314. Since there are points on the end plate that affect the deviation values ​​of the toe angle and the camber angle, the first front correction rod assembly 313 is set in two groups corresponding to the points on the end plate D, corresponding to the correction points on the front working surface of the end plate, and the first rear correction rod assembly 314 is also set in two groups, corresponding to the correction points on the rear working surface of the end plate D.

[0031] Of course, the bottom surfaces of the first front correction seat 311 and the first rear correction seat 312 are both connected to the working platform 12, and the rear ends of the two groups of first front correction rod assemblies 313 are both arranged on the working surface of the first front correction seat 311, and the front ends of the two groups of first front correction rod assemblies 313 extend horizontally toward the first rear correction seat 312, and the two groups of first front correction rod assemblies 313 are arranged in parallel; the rear ends of the two groups of first rear correction rod assemblies 314 are both connected to the working surface of the first rear correction seat 312, and the front ends of the two groups of first rear correction rod assemblies 314 extend horizontally toward the first front correction seat 311, and the two groups of first rear correction rod assemblies 314 are arranged in parallel, so that a reserved working space is formed between the two groups of first front correction rod assemblies 313 and the front end surfaces of the two groups of first rear correction rod assemblies 314 for the correction work of the end plates.

[0032] Of course, the first front correction rod assembly 313 specifically includes a first front correction rod and a first front driving mechanism for driving the first front correction rod to feed, which can make the first front correction rod approach or move away from the first rear correction seat 312. Similarly, the first rear correction rod assembly 314 includes a first rear correction rod and a first rear driving mechanism for driving the first rear correction rod to feed, which can make the first rear correction rod approach or move away from the first front correction seat 311. The correction work of the end plate at one end of the rear axle is completed by the mutual approach of the first front correction rod and the first rear correction rod.

[0033] The structure of the second correction mechanism 32 is consistent with the first correction mechanism 31, but is arranged in a mirror image with the first correction mechanism 31, and also includes a second front correction seat 321 and a second rear correction seat 322, a second front correction rod assembly 323, and a second rear correction rod assembly 324. Similarly, since there are points on the end plate that affect the deviation values ​​of the toe angle and the camber angle, the second front correction rod assembly 323 is also provided with two groups corresponding to the points on the end plate, corresponding to the correction points on the front working surface of the end plate, and the second rear correction rod assembly 324 is also provided with two groups, corresponding to the correction points on the rear working surface of the end plate.

[0034] Of course, the bottom surfaces of the second front correction seat 321 and the second rear correction seat 322 are both connected to the working platform 12, and the rear ends of the two groups of second front correction rod assemblies 323 are both arranged on the working surface of the second front correction seat 321, and the front ends of the two groups of second front correction rod assemblies 323 extend horizontally toward the second rear correction seat 322, and the two groups of second front correction rod assemblies 323 are arranged in parallel; the rear ends of the two groups of second rear correction rod assemblies 324 are both connected to the working surface of the second rear correction seat 322, and the front ends of the two groups of second rear correction rod assemblies 324 extend horizontally toward the second front correction seat 321, and the two groups of second rear correction rod assemblies 324 are arranged in parallel, so that a reserved working space is formed between the two groups of second front correction rod assemblies 323 and the front end surfaces of the two groups of second rear correction rod assemblies 324 for the correction work of the end plates.

[0035] Similarly, the second front correction rod assembly 323 specifically includes a second front correction rod and a second front driving mechanism for driving the second front correction rod to feed, which can make the second front correction rod approach or move away from the second rear correction seat 322. Similarly, the second rear correction rod assembly 324 includes a second rear correction rod and a second rear driving mechanism for driving the second rear correction rod to feed, which can make the second rear correction rod approach or move away from the second front correction seat 321. The correction work of the end plate at the other end of the rear axle is completed by the mutual approach of the second front correction rod and the second rear correction rod.

[0036] Of course, when correcting the end plate D, in order to ensure the reserved feed amount, replaceable correction adjustment parts 2 are provided at the working ends of the front correction rod and the rear correction rod. In order to make the installation of the correction adjustment parts 2 more convenient, protruding connectors are provided at the working ends of the front correction rod and the rear correction rod, and a plug-in position is provided at the rear end of the correction adjustment part 2, and the correction adjustment part 2 is connected to the protruding connector through the plug-in position.

[0037] The front correcting rod and the rear correcting rod mentioned above include any one or more of the first front correcting rod, the second front correcting rod and the second front correcting rod.

[0038] The correction adjustment part 2 is a pad, including standard pads with thicknesses of 2.5mm, 3.0mm, 3.5mm, and 4.0mm. Of course, it is not limited to this range. Pads with more thicknesses can be set according to actual correction conditions, and the thickness of the plug-in position and the protruding connector is not within this thickness range.

[0039] Of course, in order to keep the rear axle H of the automobile in a certain placement position on the working platform 12 and to always keep it in the same state without displacement during correction, auxiliary positioning support mechanisms are respectively provided corresponding to the first correction mechanism 31 and the second correction mechanism 32.

[0040] The auxiliary positioning support mechanism includes a first positioning component 41, a first positioning support component 42, a second positioning component 43 and a second positioning support component 44. The first positioning component 41 and the second positioning component 43 are used for positioning in the length direction of the rear axle H of the automobile, that is, longitudinal direction, while the first positioning support component 42 and the second positioning support component 44 are used for positioning in the lateral direction, that is, vertical direction.

[0041] Among them, the first positioning component 41 and the first positioning support component 42 are located on one side of the first correction mechanism 31, and the first positioning component 41 includes an adjustable limit block component 411, a positioning locking component 412 and a first support block 413; the first positioning support component 42 includes a first positioning mounting seat 421, a first positioning pressure head 422, and a first positioning block 423. The first positioning pressure head 422 is connected through the first positioning mounting seat 421 so that the pressure head thereon is located above the first positioning block 423. By controlling the first positioning pressure head 422, the pressure head can be close to or away from the first positioning block 423, thereby realizing the fixing and release of the rear axle H of the vehicle.

[0042] The second positioning assembly 43 and the second positioning support assembly 44 are located on one side of the second correction mechanism 32. The second positioning assembly 43 includes a fixed limit block assembly 431 and a second support block 432. The second positioning support assembly 44 includes a second positioning mounting seat 441, a second positioning pressure head 442, and a second positioning block 443. Similarly, the second positioning pressure head 442 fixes and releases the rear axle H of the vehicle by approaching or moving away from the second positioning block 443.

[0043] The fixed limit block assembly 431 cooperates with the adjustable limit block assembly 411 to realize the positioning of the end plates welded at the two ends of the rear axle H of the automobile in the length direction of the rear axle H. The positioning locking assembly 412 locks the adjustable limit block assembly 411, and the first support block 413 and the second support block 432 provide auxiliary support.

[0044] The specific operation of the above technical solution is: the rear axle with the end plate D already welded is tested by a welding fixture. When the distance error is between -0.25 and +0.25, it is qualified. If it exceeds this period, the fixture alarms and gives the specific deviation position, confirming that the welding error of the rear axle exceeds the predetermined value and needs to be corrected.

[0045] The rear axle to be corrected is first Figure 5 As shown, it is fixed on the working platform 12 through the auxiliary positioning support mechanism. The two first front correction rods correspond to the two correction points J1 and J2 respectively. Correspondingly, the first rear correction rod corresponds to the other working surface of the end plate, that is, the other two correction points corresponding to the positions of J1 and J2 on the back. Then, correction is performed according to the measured data provided by the inspection fixture. When the deviation of the working surface at the point where J1 is located is +3mm, it is necessary to install a correction adjustment pad with a thickness of 3.0mm on the first rear correction rod corresponding to the point at the back of the point where J1 is located, and then make the first A front correction rod and the first rear correction rod are pressed against the front working surface and the back surface of the end plate. At this time, the correction adjustment pad with a thickness of 3.0 mm is taken out, and then the first front correction rod at the point where J1 is located continues to extend until the point on the back of the point where the end plate J1 is located is again pressed against the extended end of the first rear correction rod from which the pad is taken out, and this state is maintained for 10 to 15 minutes. Then, the rear axle H of the automobile is removed from the working platform 12 and re-entered into the inspection fixture for inspection. The same is true for other points. If the deviation is -, the direction is opposite to it, and the welding correction work is completed.

[0046] Through the above scheme, the shaping effect is as follows:

[0047]

[0048] It can be seen from the above table that the rear axle end plate corrected by the correction mechanism fully meets the vehicle installation standards. It not only has a simple structure, but also can greatly reduce the manufacturing cost and has a good market prospect.

[0049] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A welding correction tool for a rear axle of an automobile, comprising a correction workbench (1), characterized in that: A correction mechanism for welding the rear axle end plate is arranged on the correction workbench (1), the correction mechanism comprising a front correction seat and a rear correction seat which are arranged in a mirror image, a front correction rod assembly is arranged on the front correction seat, a rear correction rod assembly is arranged on the rear correction seat, and replaceable correction adjustment parts (2) are arranged at the working ends of the front correction rod assembly and the rear correction rod assembly, and an auxiliary positioning support mechanism is arranged corresponding to the correction mechanism.

2. The automobile rear axle welding correction tool according to claim 1 is characterized in that: The front correction rod assembly includes a front correction rod and a front driving mechanism for driving the front correction rod to feed, and the rear correction rod assembly includes a rear correction rod and a rear driving mechanism for driving the rear correction rod to feed.

3. The automobile rear axle welding correction tool according to claim 2 is characterized in that: The working ends of the front correction rod and the rear correction rod are provided with protruding connectors, the rear end of the correction adjustment piece (2) is provided with a plug-in position, and the correction adjustment piece (2) is connected to the protruding connector via the plug-in position.

4. The automobile rear axle welding correction tool according to claim 3 is characterized in that: The correction and adjustment member (2) comprises a plurality of cushion blocks with different thicknesses.

5. The automobile rear axle welding correction tool according to claim 1, characterized in that: The correction mechanism is provided in two groups, including a first correction mechanism (31) and a second correction mechanism (32) which are arranged in a mirror image.

6. The automobile rear axle welding correction tool according to claim 5, characterized in that: The first correction mechanism (31) and the second correction mechanism (32) are respectively arranged at two ends of the correction workbench (1) along the same axis.

7. The automobile rear axle welding correction tool according to claim 6, characterized in that: The auxiliary positioning support mechanism comprises a first positioning component (41) and a first positioning support component (42) located on one side of the first correction mechanism (31), and a second positioning component (43) and a second positioning support component (44) located on one side of the second correction mechanism (32).

8. The automobile rear axle welding correction tool according to claim 7, characterized in that: The first positioning assembly (41) comprises an adjustable limit stop block assembly (411), a positioning locking assembly (412) and a first support block (413).

9. The automobile rear axle welding correction tool according to claim 7, characterized in that: The second positioning assembly (43) comprises a fixed limit stop block assembly (431) and a second support block (432).

10. The automobile rear axle welding correction tool according to claim 7, characterized in that: The first positioning support assembly (42) and the second positioning support assembly (44) have the same structure, and both comprise a positioning support block and a positioning clamping mechanism corresponding to the positioning support block.

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