LASER PROCESSING DEVICE

摘要

A laser machining apparatus capable of performing a high-speed and high-precision machining. One end of each of first-axis and second-axis expandible arms is supported on a fulcrum angularly movably within a predetermined range about the fulcrum in a plane parallel to a machining plane. A machining head is supported at a joint point K of the first-axis and second-axis expandible arms. Each arm has a ball screw and a cover having a expandable/contractible tube structure, and the machining head has a ball nut threadedly engaged with the ball screw. As the ball screw is rotated by a servo motor, the arm extends/contracts to move the machining head. A Z-axis adjusting mechanism is provided between a joint portion of each arm and the machining head and a machining nozzle which is disposed on a tip of the machining head. A three-dimensional parallel drive system or a combination of a serial drive system and a parallel drive system may be used for driving the machining head.