arrangement for monitoring a rechnergeführten numerically controlled machine tool

摘要

A monitoring method for a numerically controlled machine tool involves cyclic input of the actual measured position value into the controller and comparison with the desired position value. It ensures that the slip distance or error derived from the comparison may be converted into a cyclically generated desired revolution rate for the drive unit. The error is monitored with regard to allowed tolerance values and a fault warning is generated if the tolerances are exceeded. The error is monitored w.r.t. a maximum value. In the drive unit rest condition, the error is monitored w.r.t. a small rest condition limit value. The system may employe summation of partial signals measured at given time intervals with corresp. error processing.