DRIVING CONTROL DEVICE FOR MACHINE TOOL

摘要

PROBLEM TO BE SOLVED: To provide a driving control device for a machine tool capable of improving working precision of a work by a tool without increasing memory capacity of a positional data. SOLUTION: A CPU 22 reads a moving position of a work and a tool in reached accumulated rotating frequency and accumulated rotating frequency to reach next each time accumulated rotating frequency of a motor 11 for main spindle rotation reaches accumulated rotating frequency set on a positional data table T and reads a moving speed characteristic between the reached accumulated rotating frequency and the accumulated rotating frequency to reach next from a moving speed characteristic memory part 27 in accordance with an auxiliary motion command on the positional data table T. Thereafter, the CPU 22 divides a part between a starting point and a finishing point by specified timing by making the reached accumulated rotating frequency the starting point and the accumulated rotating frequency to reach next the finishing point and defines the moving position of the work and the tool at respective timing divided in accordance with the read work, the moving position of the tool and the moving speed characteristic.