Control device for the manufacture of mass in the case of a machine tool

摘要

A size control apparatus for a machine tool having an in-process gauge device, a post-process gauge device, a calculating device and a compensating device. The post-process gauge device measures the workpiece machined under the supervision of the in-process gauge device and supplies the measured value to the calculating device. The calculating device derives an estimated value for a workpiece to be next machined from a predetermined number of measured values and ascertains a compensating value when the estimated value exceeds a control limit. The compensating device, when given the compensating value, shifts a null-point of the in-process gauge device so that the finish size of the workpiece may be compensated.