Friction stir joining device for aluminum alloy plates of 1 mm and below

Abstract

The invention relates to a friction stir joining device for aluminum alloy plates of 1 mm and below. The friction stir joining device is characterized in that two pillars (2) are installed on a base (1), a guide rail (4) is installed between the two pillars (2) on the base (1), a cross beam (3) is installed above the two pillars (2), a spindle box (5) is hung on the cross beam (3), a stirring head clamping part (6) is installed below the spindle box (5), a stirring head (17) is clamped below the stirring head clamping part (6), the guide rail (4) can move forward or backward on the base (1), a level (7) provided with a sensor is installed on the guide rail (4), a heating device (8) is installed above the level (7) provided with the sensor, a workpiece is placed above the heating device, and the workpiece is clamped and fixed by pressure applied by an adjustable pressure applying device (9). The friction stir joining device has the advantages of simple structure and convenience in manufacturing, and the width of a connecting area can be greatly reduced.

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...

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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 in order to solve the problem that the existing aluminum alloy thin plates (≤1mm) are welded and welded with a large width of the connection area (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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