Clamp and device for composite connection of electron beam welding and laser additive manufacturing

Abstract

The invention provides a clamp and a device for composite connection of electron beam welding and laser additive manufacturing. The clamp comprises a first bottom plate, a second bottom plate and a plurality of supporting pieces arranged between the first bottom plate and the second bottom plate, and the first bottom plate, the second bottom plate and the supporting pieces define a containing space; the two opposite ends of each supporting piece are detachably connected with the first bottom plate and the second bottom plate respectively, the relative distance between the first bottom plate and the second bottom plate can be adjusted, and the relative position of every two adjacent supporting pieces can be adjusted; a plurality of positioning parts are correspondingly arranged on the first bottom plate and the second bottom plate respectively, so that a special clamp does not need to be replaced during electron beam welding or laser additive manufacturing, procedures do not need to be reset during machining after a forming surface is turned over, heat treatment can be carried out along with a sample, frequent clamp mounting and dismounting before and after electron beam welding and subsequent additive manufacturing are reduced, and the working efficiency in the composite connection process is greatly improved.

Description

technical field

[0001] The invention relates to the technical field of welding processing, in particular to a fixture and a device for composite connection of electron beam welding and laser additive manufacturing. Background technique

[0002] Electron beam welding refers to the use of accelerated high-energy electrons to bombard the joint of two welded parts in a vacuum environment. The heat energy generated can quickly melt the welded parts to form a molten pool, and the workpieces can be joined after cooling. Electron beam welding has the characteristics of narrow welding heat-affected zone, large weld depth-to-width ratio, fast welding speed, and high weld quality. It is widely used in aerospace, national defense, military, automobile and ship industries.

[0003] Laser additive manufacturing adopts the "discrete + accumulation" molding method, which is a net shape manufacturing method using laser as heat source, 3D CAD model as prototype, and metal powder as raw materi...

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