Reverse polarity plasma arc robot additive manufacturing system and its realization method

Abstract

The invention discloses a reverse-polarity plasma arc robot additive manufacturing system and a realization method thereof. The system includes an industrial robot, an additive manufacturing power source, a wire feeder, a machine vision system, an industrial computer, a plasma welding torch, a refrigeration device, and a gas device. and auxiliary fixtures; the industrial robot, additive manufacturing power supply, wire feeder, refrigeration device, gas device, and auxiliary fixtures are all connected to the industrial computer through the CAN BUS bus; the machine vision system communicates with the industrial computer through the TCP / IP protocol. The plasma welding torch is connected to the refrigeration device, the additive manufacturing power source, the wire feeder, the gas device and the auxiliary fixture; the refrigeration device is also connected to the additive manufacturing power source. The invention has simple topological structure and full digital control, can use arbitrary current waveform required for additive manufacturing according to the characteristics of materials and workpieces, has good process adaptability, and can improve the process quality of additive manufacturing.

Description

technical field [0001] The invention relates to the technical field of welding and additive manufacturing, in particular to a reverse-polarity plasma arc robot additive manufacturing system and an implementation method thereof. Background technique [0002] Additive manufacturing is a "bottom-up" manufacturing method that uses the layer-by-layer accumulation of materials to create solid parts. Metal additive manufacturing technology mainly uses lasers and electron beams as heat sources, and continuously melts or sinters metal powders to continuously prepare complex parts layer by layer. In recent years, low-cost and high-efficiency arc-based additive manufacturing technology has been highly valued due to the limitations of the slow forming speed of laser heat sources and the small size of electron beam processable components. Reverse polarity plasma arc additive manufacturing uses combined or transferred plasma arc as heat source, and uses alloy powder or wire as filler met...

AI Technical Summary

Problems solved by technology

There is still a large gap between the industrialization level of domestic plasma power supply equipment and developed countries. Universal welding power supplies are generally used to manufacture workpieces, and there are few dedicated reverse polarity, digital, and high-performance dedicated plasma additive manufacturing power supplies.

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