Wire-beam concentric electron beam fusing wire additive manufacturing equipment

Abstract

The invention relates to a wire-beam concentric electron beam fusing wire additive manufacturing equipment. The equipment comprises a control system, an annular beam spot cold cathode electron gun, awire feeding system, a high-voltage acceleration power supply and a beam flow regulation and control system which are electrically connected with the control system, an airflow control system, a cooling system, a focusing control circuit, a wire end position detection system, a vacuum chamber and a three-dimensional movement mechanism arranged in the vacuum chamber, wherein the control system is constructed on the basis of a PLC (programmable logic controller) and a CNC (computer numerical control); the electronic gun comprises an annular cathode at the upper part, a conical anode at the lowerpart and a wire guide tube axially penetrating through the cathode and the anode, and the cathode is connected with a high-voltage acceleration power supply and a cooling system, the conical outlet end of the lower part of the anode is connected with a vacuum chamber, and the three-dimensional movement mechanism is used for driving the workbench to move in a three-dimensional direction, the control system controls the wire feeding system to penetrate the metal wire material from the cathode inlet end to the anode outlet end through the wire guide pipe, wherein the control system is used for controlling the beam flow regulation and control system, the air flow control system, the focusing control circuit and the wire end position detection system.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to an electron beam fuse additive manufacturing equipment with coaxial filaments. Background technique [0002] Electron beam fuse additive manufacturing technology has been developed for many years, and its technology is becoming more and more mature. The existing electron beam fused wire additive manufacturing technology can define the fused wire additive manufacturing technology of hot cathode electron gun shaft side feeding according to the characteristics of the beam source and the wire feeding method. Compared with other 3D printing technologies, the advantages of electron beam fused filament additive manufacturing technology are reflected in the high-quality, efficient and rapid manufacturing of large metal components. [0003] At present, the electron beam fuse additive manufacturing equipment developed by research institutions at home and abroad are all base...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides an electron beam fuse additive manufacturing equipment with coaxial filaments, which can reduce the frequency of filament replacement, significantly improve the service life of the electron gun cathode, and solve the problems of the existing electron beam fuse additive manufacturing technology. Poor forming quality, low fuse deposition efficiency, and high dependence on operator experience

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