Friction welding machine and radial friction welding closed fixture

Abstract

The invention discloses a friction welding machine and a radial friction welding closed fixture. The radial friction welding closed fixture comprises a spring chuck, a conical sleeve, a fixture body and a clamping sleeve; the fixture body coats the outer side of the spring chuck; the conical sleeve is slidingly arranged between the spring chuck and the fixture body; when the conical sleeve slides, the inner conical surface thereon is matched with the outer conical surface of the spring chuck to realize clamping or releasing of the spring chuck; the clamping sleeve is annular, and is clamped in the spring chuck; when the spring chuck is clamped, the clamping sleeve is elastically deformed to clamp a workpiece; when the workpiece is clamped, the spring chuck is clamped to apply pressure to the clamping sleeve, and the clamping sleeve is pressed to deform to clamp the workpiece; and as the clamping sleeve is clamped and matched with the spring chuck when the spring chuck is clamped, the contact stress of all components of the spring chuck with the clamping sleeve is uniform, the clamping sleeve can preferably protect the spring chuck from being collided by the workpiece, the service life of the spring chuck is prolonged, the workload of maintainers is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of friction welding equipment, in particular to a friction welding machine and a radial friction welding closed fixture thereof. Background technique [0002] Friction welding is a kind of use of relative motion between the welding contact end faces to generate friction heat and plastic deformation heat on the friction surface and its surrounding area, so that the temperature of the nearby area rises to a temperature range close to but generally lower than the melting point. The deformation resistance is reduced, the plasticity is improved, the oxide film on the interface is broken, and the material is plastically deformed and flowed, and the solid-state welding method is realized by molecular diffusion and recrystallization at the interface. [0003] At present, in the process of using a friction welding machine for friction welding, it is necessary to use the fixture on the friction welding machine to clam...

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of using a friction welding machine for friction welding, it is necessary to use the fixture on the friction welding machine to clamp and fix the workpiece first. The existing fixtures mainly include open and closed fixtures. Compared with closed fixtures, open The precision of the fixture is poor, the reliability is low, and it is easy to cause the unevenness of the end surface of the workpiece to be welded. Although the closed fixture has high clamping accuracy, it can also ensure that the end surface of the workpiece to be welded is even, but the closed fixture generally It is composed of multiple chucks evenly distributed along the circumference. After a period of use, due to the uneven force during the clamping process and the collision of the workpiece to be welded, each chuck will be damaged to varying degrees, resulting in a decrease in clamping accuracy. , at this time, the collet needs to be replaced to ensure the clamping accuracy, resulting in an increase in the workload of maintenance personnel and an increase in production costs

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