Laser beam control method for laser beam machine

TL;DR: In this article, a linear encoder or a rotary encoder is used to detect the movement of a table or a motor which is a driving source of the XY table.

Abstract: PURPOSE:To increase the processing speed and to follow the machining speed fast particularly as compared with the conventional one by processing respective data on the X and Y movements of a table by an OR circuit. CONSTITUTION:The movement of the XY table 6 or a working state of a motor which is a driving source of the XY table 6 is detected by a linear encoder or a rotary encoder on control of a laser beam. OR on the respective data relative to the detected X movement and Y movement is taken by the OR circuit 10 and its output is inputted to a laser beam irradiation control circuit 12 via an n-fold circuit 11. In the concrete, pulse signals are obtained according to the specified distance intervals on the respective X movement and Y movement and when there is a pulse signal of either of the X movement and Y movement, the pulse irradiation of the laser beam is carried out according to this signal. The number of pulses of the laser beam is made to (n) pieces per each pulse signal of the X and Y movements by interposition of the n-fold circuit 11. Consequently, a phenomenon of a defective cutting state due to the travel speed variation of an object to be machined can be avoided.