A quick clamping device for friction stir welding

Abstract

The utility model provides a quick clamping device for stir friction welding, which includes a main body, a groove is concave on the upper surface of the main body for placing a test plate, and through grooves are concave on the opposite sides of the main body. The front end, middle part and tail end of the upper top surface of the through groove are provided with threaded through holes, which cooperate with fasteners to fix a pressure block on the upper surface of the main body. One end of the pressure block is fixed to the main body, and the bottom surface of the other end is provided with a step surface inwardly and extends to the top of the groove, so as to realize the extrusion and fixation of the test plate placed inside the groove. The front end, middle part and tail end of the lower bottom surface of the through groove are provided with positioning holes, and the positioning holes and the threaded holes of the workbench are used in conjunction with the fastener hexagonal bolts to realize the positioning and fixing of the main body on the surface of the workbench, so as to ensure the straightness requirements of the weld seam for stir friction welding. Through the device of the utility model, the test plate can be quickly installed, and the straightness of the weld seam and the reliability of clamping can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding tooling, and in particular relates to a quick clamping device for stir friction welding. Background Art

[0002] Compared with other welding methods, friction stir welding has higher requirements on assembly conditions. In the process of trial welding to obtain reasonable welding process parameters, conventional clamping methods will have problems such as positioning deviation, excessive gap, and long clamping time. Once the clamping is unstable, it is easy to cause welding defects.

[0003] Therefore, in order to avoid the cumbersome repeated clamping, it is necessary to design a fixture that can quickly install the test plate and ensure the straightness of the weld and the reliability of the clamping. Utility Model Content

[0004] The utility model aims to provide a quick clamping device for stir friction welding, characterized in that it comprises a main body, a groove for placing a test plate is concavely provided in the middle of the upper surface of the main body, through grooves are provided in the middle of the opposite side surfaces of the main body, a positioning hole is provided on the lower bottom surface of the through groove for fixing and positioning on the workbench surface, a threaded through hole is provided on the upper top surface of the through groove, a pressure block is screwed and fixed on the upper surface of the main body in cooperation with a fastener through the threaded through hole, and one end of the pressure block extends above the groove.

[0005] Furthermore, a step surface is provided on the bottom surface of the pressing block, and the step surface is located above the groove.

[0006] Furthermore, it also includes a gasket for adjusting the gap between the side surface of the test plate and the side wall of the groove, and the gap is less than 0.3mm.

[0007] Furthermore, the number of the positioning holes is set to be multiple, and the multiple positioning holes are arranged at equal intervals on the bottom surface of the through groove.

[0008] Furthermore, there are a plurality of through holes, which are evenly spaced between the two ends and the middle of the top surface of the through slot, and each through hole is matched with a fastener and a pressing block.

[0009] Furthermore, the surface of the main body is coated with an anti-rust layer.

[0010] Furthermore, the main body is made of low carbon steel.

[0011] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in:

[0012] 1. The utility model device can quickly install the test plate, fix it on the workbench through the positioning hole and ensure the straightness of the test plate.

[0013] 2. The utility model adopts a gasket to adjust the gap between the test plate and the inner wall of the groove to ensure that the gap is less than 0.3 mm, thus avoiding the problem of excessive gap.

[0014] 3. The utility model can effectively prevent the test plate from warping and stretching during welding by limiting the test plate through the inner wall of the groove and the pressure block, thereby improving the welding quality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a quick clamping device for friction stir welding. DETAILED DESCRIPTION

[0016] The following is a more detailed description of a quick clamping device for stir friction welding of the present invention in conjunction with a schematic diagram, in which a preferred embodiment of the present invention is shown. It should be understood that those skilled in the art can modify the present invention described herein and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the present invention.

[0017] like Figure 1 As shown, a quick clamping device for stir friction welding includes a main body 1, and a groove 2 with a depth of 10 mm is formed in the middle of the upper surface of the main body 1 for placing a test plate. A through groove 3 penetrating the front and rear end surfaces is provided in the middle of the left and right sides of the main body 1, and a threaded through hole connected to the upper surface of the main body 1 is provided on the upper top surface of the through groove 3. The number of threaded through holes is set to three, and the three threaded through holes are respectively set at the front end, middle part and tail end of the main body 1. Each threaded through hole is provided with a pressing block 4, one end of which is fixed to the upper surface of the main body by a fastener, and the bottom surface of the other end is provided with a step surface inwardly and extends to the top of the groove 2, which is used to press the test plate from above.

[0018] In order to prevent the gap between the side wall of the test plate and the inner wall of the groove 2 from being too large, we also provide a gasket, and adjust the gap size by selecting a suitable gasket to ensure that the gap is less than 0.3 mm.

[0019] The bottom surface of the through slot 3 is provided with a plurality of positioning holes, which connect the through slot 3 and the bottom surface of the main body 1. The number of the positioning holes is also set to three, and the three positioning holes are set at equal intervals on the bottom surface of the through slot 3, i.e., the front end, middle part and tail end of the main body 1. The positioning holes are arranged in coordination with the threaded through holes of the workbench, and the main body 1 is fixed to the upper surface of the workbench through the positioning holes on each side of the main body 1 and the fasteners - hexagonal bolts. The arrangement of the positioning holes ensures the straightness requirements of the stir friction welding weld.

[0020] The above are only preferred embodiments of the present invention and do not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, may make any equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which shall be deemed as the content of the technical solution of the present invention and still fall within the protection scope of the present invention.

Claims

1. A quick clamping device for friction stir welding, characterized in that: It includes a main body, a groove for placing a test plate is concavely provided inwardly in the middle of the upper surface of the main body, a through groove is opened in the middle of the opposite side surfaces of the main body, a positioning hole is provided on the lower bottom surface of the through groove for fixing and positioning on the workbench surface, a threaded through hole is provided on the upper top surface of the through groove, a pressure block is screwed and fixed on the upper surface of the main body with a fastener through the threaded through hole, and one end of the pressure block extends above the groove.

2. The quick clamping device for friction stir welding according to claim 1, characterized in that: The bottom surface of the pressing block is provided with a step surface, and the step surface is located above the groove.

3. The quick clamping device for friction stir welding according to claim 1, characterized in that: It also includes a gasket for adjusting the gap between the side of the test plate and the side wall of the groove, and the gap is less than 0.3 mm.

4. The quick clamping device for friction stir welding according to claim 1, characterized in that: The number of the positioning holes is set to be multiple, and the multiple positioning holes are arranged at equal intervals on the bottom surface of the through groove.

5. The quick clamping device for friction stir welding according to claim 1, characterized in that: There are a plurality of through holes, and the through holes are arranged at equal intervals between the two ends and the middle of the top surface of the through slot, and each through hole is matched with a fastener and a pressing block.

6. The quick clamping device for friction stir welding according to claim 1, characterized in that: The surface of the main body is coated with an anti-rust layer.

7. The quick clamping device for friction stir welding according to claim 1, characterized in that: The main body is made of low carbon steel.

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