Ultrasonic stirring friction welding device and welding method

Abstract

According to the ultrasonic stirring friction welding device and method, the outer ring of a mounting base is rotationally connected with a first annular sleeve shell, two pressing guide mechanisms are fixedly mounted at the bottom of the first annular sleeve shell, a fixing block is mounted on a connecting piece, and two adjusting assemblies are fixedly mounted at the bottom of the fixing block; the ends of piston rods of the two adjusting assemblies are connected with a scrap removing mechanism, and a welding position cooling mechanism is fixedly installed on the transducer. Through the arrangement of the lifting assembly, the guide wheels can be driven to ascend and descend, so that the guide wheels make contact with the surface of a to-be-welded part, meanwhile, the angles of the guide wheels are adjusted through the connecting assembly, and the guide wheels are adjusted to be parallel to the movable welding direction; according to the ultrasonic stirring friction welding device, the guide wheels can play a guiding role when the whole ultrasonic stirring friction welding device moves for welding, the guide wheels make contact with the to-be-welded parts, relative movement between the ultrasonic stirring friction welding device and the two to-be-welded parts can be prevented, and the stability of the whole moving welding process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of welding, in particular to an ultrasonic friction stir welding device and a welding method. Background technique [0002] Friction stir welding is an advanced solid-phase joining technology with small welding deformation, green and pollution-free. Static shoulder friction stir welding is a new welding technology based on friction stir welding. Compared with traditional friction stir welding, it has the advantages of low welding heat input and beautiful weld without thinning. In the static shoulder friction stir welding process, since the static shoulder does not rotate, there is a large forward resistance and rotational torque between the stirring tool and the workpiece to be welded, and the life of the welding tool is low. Loading ultrasonic can solve the above problems . [0003] The prior art with application number CN202110122000.9 discloses an ultrasonic friction stir welding device and a welding me...

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Problems solved by technology

[0004] The object of the present invention is to provide an ultrasonic friction stir welding device and a welding method to solve the following technical problems: (1) Solve the ultrasonic friction stir welding device in the prior art In the mobile welding process, usually only the stirring needle is in contact with the workpiece to be welded, which easily causes misalignment between the stirring needle and the workpiece to be welded, and the stability of the entire mobile welding cannot be guaranteed; (2) solve the technical problem in the prior art When the ultrasonic stir friction welding device is welding, the waste chips generated will remain in the welding tank, which will easily hinder the movement of the stirring pin. At the same time, the surface of the stirring pin will easily remain waste chips after welding, which will affect the technical problems of the subsequent welding of the stirring pin; 3) Solve the technical problem in the prior art that after welding by the ultrasonic friction stir welding device, the high-speed stirring treatment of the stirring needle leads to continuous high temperature in the welding tank, resulting in the easy softening and deformation of the welding material

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