Special tool clamp for friction stir welding of complex welding seam aluminum alloy

Abstract

The invention relates to a special tool clamp for friction stir welding of complex welding seam aluminum alloy. The special tool clamp comprises a friction stir welding workbench, a friction stir welding machine head and a stirring head, wherein: a clamp base is fixedly connected to the friction stir welding workbench; the clamp base is provided with an X / Y axis direction limiting mechanism; a welded workpiece is placed in the X / Y axis direction limiting mechanism; the upper surface of the welded workpiece is in rolling pressure connection with a workpiece pressing mechanism; the workpiece pressing mechanism slides on the clamp base along the X-axis direction of the friction stir welding; and the workpiece pressing mechanism is driven by a variable speed and adjustable speed motor. The special tool clamp for friction stir welding of complex welding seam aluminum alloy, provided by the invention, has the advantages that: a plurality of pressing wheels which can roll on the surface of the welding seam for pressing are adopted, the pressing force and the pressing position of the pressing wheels are adjustable, and the pressing wheels can move along with the movement of the stirring head, thereby ensuring the distance between the pressing point and the welding seam and ensuring that the pressing wheels do not interfere with the stirring head; and special tool clamp for friction stir welding of complex welding seam aluminum alloy can make the welding seam continuous, and improve the welding seam quality and the processing efficiency.

Description

technical field [0001] The invention belongs to the technical field of friction stir welding, and in particular relates to a special fixture for friction stir welding of aluminum alloy with complex welds. Background technique [0002] The friction stir welding technology is used for the welding of aluminum alloy materials. Its principle is that at room temperature, under the action of the friction stirring of the stirring head, the two metals are fused together through the local tissue of the body to achieve the purpose of welding. During the welding process, the workpiece needs to bear high pressure. High mechanical and thermal stress, therefore must be fixed with tooling. The conventional process is aimed at workpieces with large thickness and relatively simple weld seam. Several pressing points around the weld seam are fixed and compressed at one time, and removed at one time after welding. Patent Document Publication No. 204843254U discloses a general-purpose friction s...

AI Technical Summary

Problems solved by technology

For workpieces with relatively thin material thickness and complex weld curves such as radiator water cooling plates, there are many problems in the traditional industrial process

If the pressing point is far away from the welding seam, the quality of the welding seam is not guaranteed, and the workpiece is easy to deform; if the pressing point is close to the welding seam, the stirring head will interfere with the pressing block, and continuous welding cannot be performed, which will affect the quality of the welding seam and work efficiency

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