Portable no-key-hole friction stir spot welding equipment with self-holding function

Abstract

The invention discloses portable no-key-hole friction stir spot welding equipment with a self-holding function. The equipment mainly consists of a power motor, a transmission mechanism, a welding mechanism, a servo mechanism, a brake, a shell and an armrest frame. The transmission mechanism consists of a shaft gear pair and a main shaft, and is connected with the power motor through a sleeve coupling. The servo mechanism consists of a servo motor and a spiral transmission device; the transmission mechanism is associated with the servo mechanism through an angular contact ball bearing; and the tail end is connected with the welding mechanism through a thread. The equipment is high in flexibility and portability, has the self-holding function in the welding process to deal with the welding demands of various workpiece shapes and various welding positions, largely reduces the requirements on operator physical ability and operation technology, improves the equipment welding stability, and facilitates to improve the welding quality and the production efficiency.

Description

technical field [0001] The invention belongs to the field of spot welding connection technology, in particular to a portable keyhole-less friction stir spot welding equipment with a self-supporting function. Background technique [0002] With the increasingly severe energy and environmental problems, the lightweight of vehicles has become an urgent requirement in the manufacturing fields of automobiles and aerospace. Therefore, aluminum alloys and magnesium alloys, which are representative of lightweight materials, are widely used in the manufacturing industry. Resistance spot welding is a key connection technology in industrial manufacturing processes and also meets the requirements of lightweight manufacturing. However, the resistance spot welding of aluminum alloys, especially high-strength aluminum alloys, faces some difficulties: first, metallurgical defects such as pores and thermal cracks are prone to appear in the joints, which significantly reduces the quality of th...

AI Technical Summary

Problems solved by technology

[0004] At present, there are two types of friction stir spot welding equipment: one is the non-keyhole friction stir spot welding equipment developed by the German GKSS Institute and Riftic Company, which is characterized by bulky equipment, complex control systems, and high prices; The keyhole friction stir spot welding equipment developed by Kawasaki and Mazda has an integrated design of the stirring pin and the shoulder of the stirring head, which is not adaptable to the welding thickness and cannot handle a wide range of welding materials.

[0005] Due to the large size of the existing friction stir spot welding equipment, the limited working area and working dimension, the flexibility is very poor when welding some small areas or large complex structural parts, and cannot meet the corresponding needs, nor can it meet the needs of easy welding. Shipping and Carrying Requirements

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