Method for monitoring workpiece machining process in machining tool, involves outputting alarm and changing machining process speed, if actual process variable-measured values are not depending on statistic variation of process variable

摘要

The method involves iteratively determining process variable-measured values as a function of control variable, so as to receive a set of process variable-characteristics. An expected value assigned to each value of the control variable is determined from a measured value-amount at the process variable-measured values. A determination is made whether the process variable-measured values depend on a statistic variation of the process variable. An alarm is outputted, and processing speed of the machining process is changed, if the measured values are not depending on the statistic variation. An independent claim is also included for a controller of a machine tool.