Patent ID: 9519280
Filing Date: 2016-12-13
CPC Classification: G05B

Claim Text:
1. A numerical control device for a machine tool, comprising: a program analysis unit configured to read in and analyze a processing program for processing an object by controlling axes of the machine tool, the processing program including a command by which the direction of movement of one or more axes is reversed; a timing calculation unit configured to calculate a start timing of a post-reverse movement command by which a position, where a sum of the velocities generated in response to a pre-reverse movement command and the post-reverse movement command becomes zero, is equal to a position distanced by an in-position width from an end position of the pre-reverse movement command; a movement command start unit configured to start the post-reverse movement command in accordance with the start timing calculated by the timing calculation unit, wherein the numerical control device is configured to drive the one or more axes of the machine tool to process the object according to the post-reverse movement command.