A numerical control apparatus with a workpiece error - compensation unit for a three-axis machine tool

摘要

A numerical control device controls a three-axis machine tool, which a workpiece which is fastened on a table with at least three linear axes processed. The numerical control device comprises a workpiece mounting errors - compensation unit, the one hand by the fastening of the workpiece is compensated for fastening to errors caused. The workpiece mounting errors - compensation unit, an error compensation with respect to a instructed linearly the axial position with a predetermined mounting error, in order to achieve a position with respect to the workpiece at a tool means point position based on the instructed linearly the axial position of the three linear axes, so that a motion-compensated linearly the axial position is obtained. The three linear axes, on the basis of the resulting additional driven linearly the axial position.