Workpiece machining monitoring method using machining beam from laser machining head, involves monitoring signal from LC generator in which capacitance is formed between workpiece and machining head

摘要

The method involves producing a generator signal from an LC generator, such that the capacitance is formed by a measurement capacitance (CM) between the workpiece (3) and the machining head (1). The amplitude of the generator output signal is monitored for the occurrence of a defined change, to form a status signal. An Independent claim is also included for a device for monitoring the machining of a workpiece with a machining beam from a machining head.