Friction stir connection device for aluminum alloy plates with thickness of 1mm and below

Abstract

Disclosed is a friction-stir joining device for aluminum alloy plates having a thickness of 1 mm or less. The structure of the device is as follows: two supports (2) are installed on a base (1), a guide rail (4) is installed on the base (1) between the two supports (2), a transverse support (3) is installed at an upper portion of the two supports (2), a spindle box (5) is hanged on the transverse support (3), a stirring head clamping component (6) is installed below the spindle box (5), a stirring head (17) is clamped by the stirring head clamping component (6) thereunder, the guide rail (4) can move forward and backward on the base (1), a level gauge (7) having a sensor is installed on the guide rail (4), a heating device (8) is installed above the level gauge (7) having the sensor, and a workpiece is placed above the heating device and can be clamped and fixed with a pressure applied by a variable pressure device (9). The device is simple in structure and convenient to manufacture, and can greatly reduce the width of a joining region.

Description

technical field [0001] The invention relates to a mechanical connection technology, in particular to a friction welding technology, in particular to a device suitable for friction stir connection of aluminum alloy plates with a thickness of 1 mm or less. Background technique [0002] Joining thick or thin sheets is not an easy task for friction stir joining technology. Especially the friction stir joining of plates with a thickness of 1mm or less is not easy. The difficulty is mainly reflected in the following two parts: one is that the width of the connection area should not be too large, and the mechanical properties of the connection area will decrease if it is too large. Generally, it should be controlled below 2mm. One problem is that it is not easy to thin too much, and it cannot be connected to the bottom. These are directly related to its performance for 1mm thin plates. At present, there is no such friction stir joining equipment at home and abroad. There are 1mm p...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a friction stir connection device for aluminum alloy sheets with a thickness of 1mm or less, aiming at the problem that the existing aluminum alloy thin plates (≤1 mm) are welded and welded with a large connection area width (not less than 10mm). It can ensure that the width of the connection area is controlled below 2mm, and the bottom of the plate is connected thoroughly

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