Workbench suitable for bottom penetration of aluminum alloy sheet friction stir joint

Abstract

The invention discloses a workbench suitable for aluminum alloy sheet stirring, friction, connection and bottom through welding. The workbench comprises a workbench body (1). A notch (1-1) is formed in the workbench body (1). Small holes (1-2) where main shafts are installed are drilled in the bottom of the notch (1-1). The width of the notch (1-1) is the same as that of a connection area for stirring, friction and connection. The diameter of the small holes (1-2) where the main shafts are installed is the same as that of the main shafts (3). The upper portions of the main shafts (3) penetrate through the small holes (1-2) to be connected with functional discs (2) with grinding wheels, and the lower ends of the main shafts (3) are connected with motors (5). Sensors (4) are installed on the main shafts (3). The notch (1-1) is filled with nanopowder comprising the same ingredients as a connected workpiece. The diameter of the functional discs (2) with the grinding wheels is slightly smaller than the width of the notch (1-1), so that it is ensured that the functional discs (2) with the grinding wheels can rotationally move in the notch (1-1). According to the workbench, through welding is achieved, the thickness of the connection area is reduced, meanwhile, a connection area surface of the high quality can be obtained, connection deformation is small, and stirring, friction and connection quality is greatly improved.

Description

technical field [0001] The invention relates to a mechanical connection device, in particular to a workbench for bottom penetration of aluminum alloy thin plate friction stir connection, which mainly solves the problem of penetration of the bottom of thin aluminum alloy plate material by friction stir connection. To a certain extent, the problem of penetration at the bottom of the connection zone is guaranteed, and on the other hand, the problem of thinning of the connection zone is also reduced. Specifically, it is a workbench suitable for penetration of the bottom of the friction stir connection of aluminum alloy thin plates. Background technique [0002] Since the Friction Stir Joining technology was developed by the British Welding Institute in 1991, the problem of penetration of the bottom of the Friction Stir Joined plate has not yet been solved. Although many companies in the market now propose to use double shoulders to solve this problem, but In comparison, the conn...

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Problems solved by technology

[0003] The purpose of the present invention is to design a welding machine that can not only ensure the penetration problem of the connection area, but also suppress the thickness reduction of the weld seam in view of the common problems of poor penetration or serious thinning phenomenon in the existing friction stir welding. It is suitable for the workbench where the bottom of the friction stir connection of aluminum alloy sheets is welded through. Through the rotation of the bottom disc grinding wheel, it can also achieve the functions of removing the burr at the bottom and controlling the deformation of the bottom, which is beneficial to improve the quality of the friction stir connection of the plate.

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