Composite device for high-precision laser additive/subtractive manufacturing

A composite device for high-precision laser additive/subtractive manufacturing, characterized in that consisting of a sealed shaping chamber, an inert protective gas source and a machine-shaping platform, a light path selection system, as well as a control unit;

• the said inert protective gas source is connected to the sealed shaping chamber to provide inert protective gas for the sealed shaping chamber;
• the said machine-shaping platform is arranged in the said sealed shaping chamber, wherein the light path selection system is arranged above the said machine-shaping platform;
• there is a machining position is equipped on the said machine-shaping platform, and there are lead screws are arranged under the machine-shaping platform. The machine-shaping platform is fixed on the sliding blocks of the lead screws, and the said lead screws are connected to the motor of lead screw, and thus the machine-shaping platform can slide forward and backward on the lead screws under the drive of the motor of lead screw;
• the said light path selection system is arranged right above the machine-shaping platform, which consists of an independent laser light path for additive manufacturing and an independent laser light path for subtractive manufacturing which are parallel to each other, and arranged along the direction of lead screw, and each independent laser light path consists of a set of equipment including a laser, a beam expander, a scanning galvanometer and a focusing field lens, which are arranged in sequence, meanwhile, each independent laser light path does not share equipment;
• the said control unit is respectively connected to the inert protective gas source, the motor of lead screw, the machine-shaping platform and the light path selection system through electrical signal. The control unit can control the inert protective gas source to make the sealed shaping chamber full of inert protective gas, and then drive the motor of lead screw as per the requirement, and thus make the machine-shaping platform slide, so that guarantee the machining position to align at the required independent laser light path as well as control the light path selection system to machine the parts, and then, repeat such operation process until the parts are machined.