The special equipment for the inner and outer rings of glasses adopts cast parts; Precision linear rectangular guide rail, with pre tensioning, good rigidity, and high precision; Grinding grade precision ball screw with pre tightening and high precision; The carving control system software is easy to operate, learn and use, and easy to master. The interface adopts international standard G-code instructions and is compatible with domestic and foreign programming software. The drive motor adopts a new type of hybrid stepper with coding feedback function, greatly improving the stability of the machine tool.