System and method for additive manufacturing of intersecting metal parts with auxiliary wire filling gmaw arc

Abstract

The invention proposes a system and method for auxiliary wire-filling GMAW arc additive manufacturing of intersecting metal parts, including: industrial computer, GMAW arc additive position visual detection and feedback system, melting electrode welding torch, auxiliary wire filling device, substrate and composite feeder Wire device; the industrial computer is used to generate the path code information of the additive manufacturing part, and control the composite wire feeding device to feed the wire and the melting electrode welding torch on the surface of the substrate according to the path instructions issued by the industrial computer according to the process parameters set during the additive manufacturing part Accumulate and form each layer, accumulate layer by layer to form the target part, and adjust the current and voltage of the melting electrode torch and auxiliary wire with feedback signals, and adjust the wire feeding speed of the composite wire feeding device to change the cladding amount at the intersection position , perform closed-loop control on the forming process; keep the intersection point flat during the forming process; the arc additive position visual detection and feedback system converts the collected GMAW arc additive position information into a feedback control signal and transmits it to the industrial computer.

Description

technical field [0001] The invention belongs to the technical field of arc additive manufacturing, and in particular relates to a GMAW arc additive manufacturing system and method for assisting wire filling of intersecting metal parts. Background technique [0002] In order to meet the demanding requirements of the aerospace and automotive industries, the current research on additive manufacturing technology mainly focuses on the additive manufacturing technology of functional metal materials (including metals, alloys, and metal matrix composites) with complex shapes. In order to solve the problems of low production efficiency, low energy utilization rate and high cost in metal additive manufacturing, arc additive manufacturing of metal parts has become a new research trend. The arc additive manufacturing technology uses the arc as the energy-carrying beam, and adopts the method of layer-by-layer surfacing welding to manufacture metal solid components. According to the idea ...

AI Technical Summary

Problems solved by technology

In addition, the use of lap joints to connect the cross pieces will make the mechanical properties of the cross pieces worse and prone to cracking. The control of the defects at the intersection is the key to whether the arc fuse additive manufacturing technology can be applied to the rib structure.

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