A method of oscillating friction welding

Abstract

The invention relates to a swing friction welding method. The swing friction welding method comprises the steps that a swing workpiece is driven to swing at a small angle within the set range around the fixed axis, and the swing piece swings at the set swing frequency; an upsetting workpiece is driven to move linearly under the effect of upsetting force till making contact with the swing workpiece; and a swing friction welding technology is conducted, specifically, after the swing workpiece and the upsetting workpiece make contact, the swing piece continues being driven to swing, meanwhile, the upsetting workpiece bears the effect of the upsetting force to move in the direction of the contact face, thus the swing workpiece and the upsetting workpiece conduct friction to generate heat on the contact face, a material of the contact face is softened and extruded by the upsetting force, when the predetermined extrusion amount is reached, swing motion of the swing workpiece is rapid stopped, and under the effect of the upsetting force, the swing workpiece and the upsetting workpiece are welded into an integrated structure.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to an oscillating friction welding method. Background technique [0002] Linear friction welding (Linear Friction Welding) is a welding method that has been developed rapidly in recent years. It is mainly used in the manufacture of aircraft frame and beam parts. For its welding principle, see figure 1 . The first weldment 1 achieves linear vibration with a certain frequency and amplitude in the vertical direction; the second weldment 2 contacts the end face of the vibrating first weldment under the action of the upsetting force in the horizontal direction, and high frequency occurs on the contact surface Friction generates heat. As the temperature rises, the material on the contact surface softens and is extruded. When the extrusion reaches a certain level, the vibration is stopped quickly to ensure that the upper surfaces of the two workpieces are aligned, and a horizontal upsett...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a swing friction welding method. The swing workpiece and the upsetting workpiece are welded by swing friction welding process to form an integrated structure. The conventional linear vibration method is replaced by angular vibration, which effectively solves the problem of conventional linear friction. The problem of limited application range of welding

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