WORKPIECE MACHINING CONTROL DEVICE OF MACHINE TOOL AND WORKPIECE MACHINING CONTROL METHOD USING CONTROL DEVICE, AND WORKPIECE MACHINING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a workpiece machining control device of a machine tool capable of executing control in general machine tools, capable of elongating the service life of tools by reliably segmenting chips and capable of minimizing extension of a working time.;SOLUTION: A workpiece machining control device 2 of a machine tool includes a relative feed control section 8 that controls a drive section 5b for changing a position of a workpiece W relative to a tool T in axial direction of the workpiece W. The relative feed control section 8 repetitively executes forward feed control and backward feed control of the drive section 5b in an exact stop mode. Further the relative feed control section makes a backward feed distance Lb in the backward feed control larger than an acceleration distance Lα1 moving in acceleration in the forward feed control or a deceleration distance Lβ1 moving in the deceleration in the forward feed control, and makes the backward feed distance smaller than a sum of the acceleration distance Lα1, the deceleration distance Lβ1, and a prescribed distance Lbmin.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2016,JPO&INPIT