Four-laser four-galvanometer selective laser melting additive and subtractive forming device and method

Abstract

The invention discloses a four-laser four-galvanometer selective laser melting additive and subtractive forming device and method; the forming device includes a sealed forming chamber; a machining forming platform, an industrial personal computer, powder feeding and spreading equipment, circulating purification equipment and milling equipment are arranged in the sealed forming chamber; the machining forming platform is provided with a to-be-machined part. The forming device is characterized in that it further comprises galvanometer light path equipment. The galvanometer light path equipment comprises four scanning galvanometers and four lasers. The four scanning galvanometers are arranged over the machining forming platform, the four scanning galvanometers are arranged in a 2 * 2 mode, a laser excitation light source is input into the scanning galvanometers through a light valve steering unit and a variable beam expanding collimating mirror unit, and the industrial personal computer isconnected with galvanometer light path equipment to achieve simultaneous machining of four areas of the same part.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a four-laser and four-galvanometer laser selective melting addition and subtraction material forming device and method. Background technique [0002] Laser selective melting molding technology is a kind of additive manufacturing technology. By layer-by-layer powder coating and laser selective melting processing, it can form parts with complex spatial structures. However, due to the large roughness and low forming precision of metal additive manufacturing direct forming parts, which affect their matching properties, wear resistance, fatigue strength, contact stiffness, vibration and noise, etc., they cannot be directly installed and used in precision instruments. To some extent, it limits the promotion and application of laser metal additive manufacturing. In order to improve the forming accuracy of metal additive manufacturing parts and reduce the surface roughness of formi...

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Problems solved by technology

[0003] In order to overcome the problem of poor forming precision of laser selective melting in the prior art, the present invention proposes a four-laser four-mirror laser selective melting increase and decrease material forming device and method

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