Controller for machine tool

Abstract

To provide a controller for a machine tool capable of shredding chips in any thread cutting method. A controller for a machine tool comprises: an oscillation condition calculation unit that calculates an oscillation amplitude and an oscillation direction allowing shredding of chips occurring from lathe-turning machining based on an infeed amount in a radial direction of a work and a shift amount in a circumferential direction of the work relative to a last machining path of a tool used for the lathe-turning machining on the work; an oscillation command calculation unit that calculates an oscillation command for causing the work and the tool to oscillate relative to each other based on the oscillation amplitude and the oscillation direction calculated by the oscillation condition calculation unit; and an adder that adds a movement command for moving the work and the tool relative to each other for the lathe-turning machining on the work and the oscillation command.

Dependencies are inferred from the claim text.