Welding device for automobile lower swing arm

Abstract

The utility model provides an automobile lower swing arm welding device which comprises a tool bottom plate, a workpiece to be welded is arranged on the tool bottom plate, a pre-positioning hole is formed in the workpiece, a positioning base is arranged on the tool bottom plate, a fixed positioning hole is formed in the position, corresponding to the pre-positioning hole, of the positioning base, and the fixed positioning hole is connected with the tool bottom plate. The positioning base is provided with a positioning bolt which is inserted into the pre-positioning hole and the fixed positioning hole at the same time; the tool bottom plate is provided with the pressing device for pressing the workpiece on the positioning base, the workpiece to be welded is rapidly positioned on the positioning base through the positioning plug pin, rapid pressing is achieved through the pressing device, preparation work of subsequent welding is completed, rapid assembly and disassembly of the welded part are conveniently and rapidly achieved, and the welding efficiency is improved. And the insertion positioning state of the positioning plug pin can be monitored, and the reliability of the welding device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of welding processing, in particular to a welding device for an automobile lower swing arm. Background Art

[0002] Processing the automobile lower swing arm by welding method is a relatively common processing method. Since the automobile lower swing arm is usually formed by combining several sheet metal parts, and mounting holes are also provided on the lower swing arm, there are relatively high requirements for positioning and position accuracy.

[0003] The existing positioning and clamping methods for the components of the welding tooling are cumbersome, and mostly rely on the outer shape of the sheet metal parts for positioning, and the position consistency between the mounting holes is poor. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the positioning and clamping of the existing lower swing arm processing components are cumbersome, and the position consistency of the positioning holes or mounting holes after welding is poor. The utility model provides a welding device for an automobile lower swing arm to solve the above problems.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a welding device for an automobile lower swing arm, including a tooling bottom plate, the workpiece to be welded is placed on the tooling bottom plate, pre-positioning holes are provided on the workpiece, a positioning base is arranged on the tooling bottom plate, fixed positioning holes corresponding to the pre-positioning holes are arranged on the positioning base, and positioning pins that are simultaneously inserted into the pre-positioning holes and the fixed positioning holes are arranged on the positioning base; a presser for pressing the workpiece onto the positioning base is arranged on the tooling bottom plate.

[0006] Further: a monitoring hole perpendicular to the fixed positioning hole is arranged on the positioning base; a positioning step that fits with the hole wall of the fixed positioning hole is arranged in the middle of the positioning pin, and a guiding outer cone is arranged at the bottom; a monitoring rod is slidably arranged in the monitoring hole, a guiding step that fits with the monitoring hole is arranged in the middle of the monitoring rod, and a ball head is arranged on the left part of the monitoring rod; on the right side of the guiding step, a return spring is sleeved outside the monitoring rod, and the return spring pushes the monitoring rod to the left so that the ball head abuts against the guiding outer cone; a position sensor is arranged on the right side of the monitoring rod.

[0007] Further: an installation cover is arranged at the orifice of the monitoring hole, and the return spring fits against the inner side of the installation cover.

[0008] The beneficial effects of the present utility model are as follows: A welding device for an automobile lower swing arm of the present utility model quickly positions the workpiece to be welded on the positioning base through positioning pins, and uses a compactor to achieve quick clamping, completing the preparatory work for subsequent welding. It conveniently and quickly realizes the quick installation and disassembly of the welded parts, and can monitor the insertion and positioning state of the positioning pins, ensuring the reliability of the welding device. Brief Description of the Drawings

[0009] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0010] Figure 1 is a schematic installation structure diagram of a welding device for an automobile lower swing arm of the present utility model;

[0011] Figure 2 is a schematic structure diagram of the positioning pin installed on the positioning base (the positioning pin is pressed in place);

[0012] Figure 3 is a schematic structure diagram of the positioning pin installed on the positioning base (the positioning pin is not pressed in place);

[0013] In the figures, 1 is the tooling bottom plate, 2 is the workpiece, 3 is the pre-positioning hole, 4 is the positioning base, 5 is the fixed positioning hole, 6 is the positioning pin, 7 is the compactor, 8 is the monitoring hole, 9 is the monitoring rod, 10 is the guiding step, 11 is the return spring, 12 is the guiding outer cone, 13 is the position sensor, and 14 is the mounting cover. Detailed Embodiment

[0014] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model. On the contrary, the embodiments of the present utility model include all changes, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0016] In addition, terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.

[0017] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present utility model includes additional implementations, where functions may be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present utility model pertain.

[0018] As Figures 1 to 2 As shown, the present utility model provides a welding device for an automobile lower arm, which includes a tooling base plate 1. A workpiece 2 to be welded is placed on the tooling base plate 1. The workpiece 2 is provided with a pre-positioning hole 3. A positioning base 4 is arranged on the tooling base plate 1. A fixed positioning hole 5 corresponding to the pre-positioning hole 3 is arranged on the positioning base 4. A positioning pin 6 that is inserted into both the pre-positioning hole 3 and the fixed positioning hole 5 simultaneously is arranged on the positioning base 4. A presser 7 for pressing the workpiece 2 onto the positioning base 4 is arranged on the tooling base plate 1.

[0019] The workpiece 2 to be welded is first positioned on the tooling base plate 1. The positioning pin 6 is first inserted into the workpiece 2, and then the positioning pin 6 is inserted into the positioning base 4. In this way, the positioning and installation of the workpiece 2 on the tooling base plate 1 can be completed. Then, the workpiece 2 is pressed and fixed on the tooling base plate 1 by the presser 7. In this way, the positioning and clamping of the workpiece 2 can be completed, preparing for the subsequent welding. The method of inserting the positioning pin 6 into the two holes can, on the one hand, achieve rapid positioning and installation, and on the other hand, considering some welding residual stress after welding, this movable pin can facilitate the removal of the welded workpiece 2 from the tooling base plate 1. The presser 7 is a common fixture pressing device in the prior art, so the specific structure and pressing method will not be elaborated herein.

[0020] A monitoring hole 8 perpendicular to and intersecting with the fixed positioning hole 5 is provided on the positioning base 4; a positioning step that fits against the hole wall of the fixed positioning hole 5 is provided in the middle of the positioning pin 6, and a guiding outer cone 12 is provided at the bottom; a monitoring rod 9 is slidably arranged in the monitoring hole 8, a guiding step 10 that fits against the monitoring hole 8 is provided in the middle of the monitoring rod 9, and a ball head is provided on the left part of the monitoring rod 9; a return spring 11 is sleeved outside the monitoring rod 9 on the right side of the guiding step 10, and the return spring 11 pushes the monitoring rod 9 to the left so that the ball head abuts against the guiding outer cone 12; a position sensor 13 is provided to the right of the monitoring rod 9.

[0021] The monitoring rod 9 is mainly used to monitor whether the positioning pin 6 is inserted into the specified position. The specific monitoring method is that when the positioning pin 6 is not inserted into the fixed positioning hole 5 or the positioning pin 6 is not inserted in place, the monitoring rod 9 is in the left - leaning position under the left - pushing force of the return spring 11. In this way, the signal of the position sensor 13 on the right will not be triggered, that is, the welding device will limit the workpiece 2 from being fully and reliably positioned on the tooling base plate 1, and thus will not enter the subsequent welding process.

[0022] When the positioning pin 6 passes through the pre - positioning hole 3 and is inserted into the fixed positioning hole 5, as the positioning pin 6 is inserted downward, the positioning step and the hole wall of the fixed positioning hole 5 remain in contact, achieving the effect of precise positioning. At the same time, during the downward movement of the guiding outer cone 12, the ball head in contact with it is pushed to the right, and the monitoring rod 9 is pushed to move to the right until the information of the position sensor 13 is triggered. In this way, the normal and reliable positioning of the positioning pin 6 is completed. After the position sensor 13 triggers the signal of positioning completion, the subsequent welding process will be carried out. This method has a certain anti - fooling and anti - error function, avoiding the risk of misalignment of the workpiece 2 or large position errors directly welded due to the improper positioning of the positioning pin 6, and improving the welding quality of the product.

[0023] An installation cover 14 is provided at the orifice of the monitoring hole 8, and the return spring 11 abuts against the inner side of the installation cover 14. The return spring 11 can always provide a left - pushing force to the monitoring rod 9 towards the positioning pin 6 on the left, so that the ball head always remains in contact with the guiding outer cone 12, ensuring that the position of the monitoring rod 9 can always monitor the state of the positioning pin 6. The installation cover 14 and the monitoring hole 8 adopt a split - type structure, which is convenient for the installation and disassembly of the monitoring rod 9 and has high assembly processability.

[0024] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the said terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0025] Taking the above-mentioned ideal embodiment of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding device for a lower arm of an automobile, comprising a tooling base plate (1), a workpiece (2) to be welded is placed on the tooling base plate (1), and a pre-positioning hole (3) is provided on the workpiece (2), characterized in that: The tooling base plate (1) is provided with a positioning base (4), the positioning base (4) is provided with a fixed positioning hole (5) corresponding to the pre-positioning hole (3), and the positioning base (4) is provided with a positioning pin (6) which is inserted into both the pre-positioning hole (3) and the fixed positioning hole (5); the tooling base plate (1) is provided with a clamp (7) which clamps the workpiece (2) onto the positioning base (4).

2. A welding device for a lower arm of an automobile as claimed in claim 1, characterized in that: The positioning base (4) is provided with a monitoring hole (8) which intersects perpendicularly with the fixed positioning hole (5); the middle part of the positioning pin (6) is provided with a positioning step which fits with the hole wall of the fixed positioning hole (5), and the bottom part is provided with a guide outer cone (12); a monitoring rod (9) is slidably arranged in the monitoring hole (8), the middle part of the monitoring rod (9) is provided with a guide step (10) which fits with the monitoring hole (8), and the left part of the monitoring rod (9) is provided with a ball head; on the right side of the guide step (10), a reset spring (11) is sleeved on the outside of the monitoring rod (9), and the reset spring (11) pushes the monitoring rod (9) to the left so that the ball head abuts against the guide outer cone (12); and a position sensor (13) is arranged on the right side of the monitoring rod (9).

3. A welding device for a lower arm of an automobile as claimed in claim 2, characterized in that: A mounting cover (14) is provided at the opening of the monitoring hole (8), and the return spring (11) is fitted on the inner side of the mounting cover (14).

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