Motor control device

Abstract

The present invention provides a technology that can reduce a shock of a machine tool caused by a sharp change in acceleration at the time of oscillation mode switching in oscillation machining. A motor control device 1 comprises: an oscillation command calculation unit 12 that calculates an oscillation command from a movement command and an oscillation condition; an oscillation mode switching determination unit 32 that determines a timing of finishing the oscillation or switching a machining path; a filter time constant/application time setting unit 31 that sets a time constant τ and an application time to of a filter; a filter coefficient calculation unit 33 that calculates a filter coefficient K on the basis of the time constant τ set by the filter time constant/application time setting unit 31; and a filter application unit 34 that applies a filter having the filter coefficient K to a command for driving a motor 2 during the application time to when the oscillation mode switching determination unit 32 determines that the switching timing has been reached.

Dependencies are inferred from the claim text.