Enclosed Type

Laser cutting machine laser beam focus position control system is analyzed

by：Transon 2020-10-28

Laser cutting machine laser beam focus position control system, has the following three types of 1) Based on the plasma charge signal ( PCS) Control system can realize closed loop control of laser welding torch height, keep the welding nozzle distance is constant, a workpiece in the process of removing surface welding or workpiece surface uneven affects the quantity of the coke. But when the thermal lens effect, cannot guarantee the focus position is stable. 2) Successful development of the focus position since the optimization control system, using plasma optical signal ( PS) , can automatically find and keep the focus on good position OFPP, effectively compensate the workpiece uneven, the thermal lens effect, flight path and other factors caused by the drift focus position, ensure the process under the condition of large penetration. Control scheme is correct, the system design is reasonable, the control effect is obvious. But uneven or space curved surface welding workpiece, cannot guarantee the distance between the nozzle and workpiece is constant. 3) Integration of PS and PCS since the double closed loop control system for optimum focus position and have the function of the two systems at the same time, can automatically find and keep the focus on good position, and can keep the nozzle - Artifacts from the same, it is a kind of advanced, practical very strong control system again

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