Numerical control device

A numerical control device configured to control a machine tool to machine a workpiece, the numerical control device comprising:

• a parameter storage configured to store therein a noise-command allowable width to be used for determining whether to perform movement based on a movement command in a command non-target axis direction that is a direction of an axis not included in a designated plane;
• and
• a path-correction processor configured to compare an absolute value of a movement amount according to the movement command in the command non-target axis direction with the noise-command allowable width when a block of a machining program includes the movement command in the command non-target axis direction, determine the movement command in the command non-target axis direction to be a noise command when the absolute value of the movement amount according to the movement command in the command non-target axis direction is smaller than the noise-command allowable width, and perform path correction to set a movement amount according to the noise command to zero,
• wherein the path-correction processor is further configured to perform lost motion compensation (LMC) in response to determining that the movement command in the command non-axis target direction is not the noise command, to omit performing the LMC in response to determining that the movement command in the command non-axis target direction is the noise command, and to control the machine tool to machine the workpiece according to the path correction and the LMC.