Numerical control device

A numerical control device, comprising:

• an analyzer that analyzes a machining program to generate movement command data for moving a tool and that sequentially recognizes a program coordinate value, which is a coordinate value of the tool on the machining program and which is based on the generated movement command data, wherein the machining program is for machining a work by repeatedly executing a cycle operation by the tool;
• a detector that detects an abnormality during the machining;
• a controller that supplies an operation command for a retract operation for retracting the tool from the work during a time period from detection of the abnormality by the detector until one cycle operation by the tool ends by retracting the tool from a first program coordinate value (x1, y1, z1) to a second program coordinate value (x2, y2, z2);
• and
• an integrator that integrates a movement amount (x2−x1, y2−y1, z2−z1) of the tool based on the operation command supplied from the controller, wherein the movement amount (x2−x1, y2−y1, z2−z1) is calculated as a difference between the first program coordinate value (x1, y1, z1) and the second program coordinate value (x2, y2, z2),
• wherein, when the retract operation by the controller ends, the analyzer recognizes a value obtained by adding up the movement amount (x2−x1, y2−y1, z2−z1) and the recognized program coordinate value as a new program coordinate value, and then executes a tool retraction program for moving the tool or the work to a predetermined position.