Lower swing arm welding clamp

Abstract

The lower swing arm welding clamp comprises a positioning plate, clamping plates, clamping assemblies and limiting assemblies, a positioning groove is further formed in the end face of the positioning plate, the shape of the positioning groove is consistent with that of a lower swing arm, the positioning groove is used for embedding the lower swing arm for positioning, the clamping plates are arranged on the two sides of the positioning plate, and the clamping assemblies are arranged on the clamping plates. The clamping plates are perpendicular to the positioning plate, clamping assemblies and limiting assemblies are arranged on the end faces of the clamping plates, and the clamping assemblies and the limiting assemblies on the end faces of the clamping plates on the two sides are oppositely arranged. A clamping cylinder pushes a clamping block to clamp and fix a lower arm wall body, so that a lower swing arm is located in a positioning groove in the end face of a positioning plate, and therefore welding errors caused by swing arm displacement in the welding process are prevented; the casing pipe is sleeved in the extended positioning shaft, so that the casing pipe is in close contact with the lower swing arm body to facilitate welding, and the hole site precision of the lower swing arm is improved in the welding process.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a lower swing arm welding fixture. Background Art

[0002] The lower arm of the automobile chassis suspension is a connecting part used to connect the wheel horn and the subframe. The existing lower arm is welded by two layers of stamped metal parts, and a sleeve for fixing the bushing is also welded at the connection point with the subframe. Therefore, the welding quality of the lower arm will affect the driving stability of the vehicle, and the commonly used fixture cannot accurately position the sleeve, so that the hole position accuracy of the lower arm after welding does not meet the standard, which makes the lower arm unusable. Therefore, a lower arm welding fixture is designed to solve the above problem. Utility Model Content

[0003] In view of the shortcomings of existing welding fixtures, the utility model aims to provide a lower swing arm welding fixture, which has the advantages of fastening and clamping, and accurately positioning the sleeve.

[0004] In order to achieve the above-mentioned purpose, a technical solution adopted by the utility model is: a lower swing arm welding fixture, including a positioning plate, a clamping plate, a clamping assembly and a limiting assembly, the end surface of the positioning plate is also provided with a positioning groove, the shape of the positioning groove is consistent with the shape of the lower swing arm, the positioning groove is used to embed the lower swing arm for positioning, clamping plates are provided on both sides of the positioning plate, the clamping plates are perpendicular to the positioning plates, the end surfaces of the clamping plates are provided with clamping assemblies and limiting assemblies, and the clamping assemblies and limiting assemblies on the end surfaces of the clamping plates on both sides are arranged opposite to each other;

[0005] Preferably, the clamping assembly comprises a clamping cylinder and a clamping block, wherein the clamping cylinder is fixedly connected to the clamping plate, and the clamping block is fixedly connected to the telescopic end of the clamping cylinder;

[0006] Further preferably, the contact end surface of the clamping block and the lower swing arm also has a limiting step, and the limiting step is used to limit the lower swing arm in the positioning groove;

[0007] Preferably, the limit assembly comprises a limit cylinder and a positioning shaft, the limit cylinder is fixedly connected to the clamping plate, the positioning shaft is fixedly connected to the telescopic end of the limit cylinder, the diameter of the positioning shaft is the same as the inner diameter of the lower swing arm sleeve, and the positioning shaft is used to be inserted into the lower swing arm sleeve for positioning;

[0008] The beneficial effects of the utility model are: 1. The clamping block is pushed by the clamping cylinder to clamp and fix the lower arm wall body, so that the lower swing arm is in the positioning groove of the end face of the positioning plate, thereby preventing welding errors caused by the displacement of the swing arm during welding; 2. By arranging the sleeve in the extended positioning shaft, the sleeve is in close contact with the lower swing arm body to facilitate welding, thereby improving the hole position accuracy of the lower swing arm during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a cross-sectional structural view of the utility model;

[0010] Figure 2 This is a cross-sectional structural view of the clamping state of the lower swing arm of the utility model;

[0011] Figure 3 This is a three-dimensional structural view of the clamping block of the utility model. DETAILED DESCRIPTION

[0012] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0013] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0014] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided with", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] See also Figures 1 to 3 , the utility model embodiment includes:

[0016] A lower swing arm welding fixture, comprising a positioning plate 1, a clamping plate 2, a clamping assembly 3 and a limiting assembly 4, wherein the end surface of the positioning plate 1 is further provided with a positioning groove 11, the shape of the positioning groove 11 is consistent with the shape of the lower swing arm, and the positioning groove 11 is used to embed the lower swing arm for positioning, the two sides of the positioning plate 1 are provided with clamping plates 2, the clamping plates 2 are perpendicular to the positioning plate 1, the end surfaces of the clamping plates 2 are provided with clamping assemblies 3 and limiting assemblies 4, and the clamping assemblies 3 and limiting assemblies 4 on the end surfaces of the clamping plates 2 on both sides are arranged opposite to each other;

[0017] The clamping assembly 3 comprises a clamping cylinder 5 and a clamping block 6, wherein the clamping cylinder 5 is fixedly connected to the clamping plate 2, and the clamping block 6 is fixedly connected to the telescopic end of the clamping cylinder 5;

[0018] The contact end surface of the clamping block 6 with the lower swing arm also has a limiting step 61, and the limiting step 61 is used to limit the lower swing arm in the positioning groove 11;

[0019] The limiting assembly 4 comprises a limiting cylinder 7 and a positioning shaft 8, wherein the limiting cylinder 7 is fixedly connected to the clamping plate 2, and the positioning shaft 8 is fixedly connected to the telescopic end of the limiting cylinder 7, and the diameter of the positioning shaft 8 is the same as the inner diameter of the lower swing arm sleeve, and the positioning shaft 8 is used to be inserted into the lower swing arm sleeve for positioning;

[0020] Through the above settings, in the actual working process, its specific working principle is as follows:

[0021] First, sleeves are placed on the positioning shafts 8 extending on both sides, and then the lower swing arm body is placed in the positioning grooves 11 on the end surface of the positioning plate 1. At this time, the sleeves on both sides are on the same axis and in close contact with the lower swing arm body. After the workpiece is placed, the clamping cylinder 5 is started to extend, and the clamping cylinder 5 drives the clamping plate 2 to clamp the lower swing arm body. At the same time, the limiting step 61 in the clamping block 6 limits the lower swing arm body in the positioning groove. At this time, the fixation is completed and welding can be carried out;

[0022] When the lower swing arm is welded, the limit cylinder 7 and the clamping cylinder 5 are started to contract, the clamping cylinder 5 drives the clamping plate 2 to retract and no longer fix the lower swing arm, and the limit cylinder 7 drives the positioning shaft 8 to retract, so that the sleeve can be removed from the fixture. After the lower swing arm is removed, the limit cylinder 7 is started again to drive the positioning shaft 8 to extend, so as to continue to position the sleeve of the lower swing arm;

[0023] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lower swing arm welding fixture, characterized in that: It includes a positioning plate, a clamping plate, a clamping assembly and a limiting assembly. The end face of the positioning plate also has a positioning groove. The shape of the positioning groove is consistent with the shape of the lower swing arm. The positioning groove is used to embed the lower swing arm for positioning. Clamping plates are provided on both sides of the positioning plate. The clamping plates are perpendicular to the positioning plate. The end face of the clamping plate is provided with a clamping assembly and a limiting assembly. The clamping assemblies and the limiting assemblies on the end faces of the clamping plates on both sides are arranged opposite to each other.

2. A lower swing arm welding fixture according to claim 1, characterized in that: The clamping assembly comprises a clamping cylinder and a clamping block, wherein the clamping cylinder is fixedly connected to the clamping plate, and the clamping block is fixedly connected to the telescopic end of the clamping cylinder.

3. A lower swing arm welding fixture according to claim 2, characterized in that: The contact end surface of the clamping block and the lower swing arm is also provided with a limiting step, and the limiting step is used to limit the lower swing arm in the positioning groove.

4. The lower swing arm welding fixture according to claim 1, characterized in that: The limit assembly comprises a limit cylinder and a positioning shaft, the limit cylinder is fixedly connected to the clamping plate, the positioning shaft is fixedly connected to the telescopic end of the limit cylinder, the diameter of the positioning shaft is the same as the inner diameter of the lower swing arm sleeve, and the positioning shaft is used to be inserted into the lower swing arm sleeve for positioning.

Images