Wire arc additive manufacturing method, device and equipment for continuous growth of curved surface metal structure and computer storage medium

Abstract

The invention provides a wire arc additive manufacturing method and system for continuous growth of a curved surface metal structure. The method comprises the following steps: selecting a welding wire and a base plate needed for forming a specific metal structure; generating a spiral and swinging continuous rising slice path; driving a welding gun by a robot to move according to the generated spiral and swinging continuous rising path; and enabling a positioner to cooperate with the robot to work through rotation and overturning. The system comprises a base assembly, a path generation module, an eight-axis linkage mechanism and a visual sensing module, wherein the base assembly is used for placing a specific metal structural member; the path generation module is used for generating the spiral and swinging continuous rising slice path; the eight-axis linkage mechanism (comprising a six-axis robot and a double-axis positioner) is used for tracking and printing according to the spiral and swinging continuous rising slice path generated by the path generation module; and the visual sensing module is used for monitoring a printed workpiece in real time. According to the method and system, the bottleneck that continuous wire arc additive manufacturing of an existing curved surface metal structural part is difficult is solved, the product development period is shortened, and the efficiency is improved.

Description

technical field

[0001] The invention relates to an arc additive manufacturing method and system for continuous growth of curved metal structures, and relates to the field of additive manufacturing. Background technique

[0002] Arc Additive Manufacturing (Wire Arc Additive Manufacture, WAAM) is a method that uses an arc or plasma arc as a heat source to melt metal welding wire, and adopts the principle of layer-by-layer cladding under the control of a program or software. It is an advanced digital manufacturing technology that produces a three-dimensional metal blank that is close to the product shape and size requirements. The parts formed by the arc additive manufacturing technology are composed of full-weld metal, with uniform chemical composition and high density. The free forming environment has almost no restrictions on the size of the parts, and the forming efficiency can reach several Kg / h.

[0003] The curved metal structure is a complex part with a suspended struc...

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