Numerical control device, numerical control machine system, machining simulation device, and machining simulation method

A machining simulation device operated in a computer, the machining simulation device comprising:

• at least one reversing point detecting unit among:
• a first reversing point detecting unit that detects reversing point in a direction of an axis of a machine on the basis of the machining program,
• a second reversing point detecting unit that detects reversing point in the direction of the axis on the basis of the position command generated by using the machining program,
• a third reversing point detecting unit that detects reversing point in the direction of the axis on the basis of positional deviation or position feedback information of a servo control unit that controls a servomotor which drives the axis, and
• a fourth reversing point detecting unit that detects reversing point in the direction of the axis on the basis of positional information of a movable portion of the machine;
• a drawing unit that visualizes a reversing point location detected by the at least one reversing point detecting unit, and generates an image in which the reversing point location is superimposed on an image of a workpiece machined by the machine;
• and
• an output unit that outputs the image generated by the drawing unit.

A machining simulation method comprising the steps of:

• performing at least one reversing point detection among:
• a first reversing point detection that detects reversing point in a direction of an axis of a machine on the basis of the machining program,
• a second reversing point detection that detects reversing point in the direction of the axis on the basis of the position command generated by using the machining program,
• a third reversing point detection that detects reversing point in the direction of the axis on the basis of a positional deviation or position feedback information of a servo control unit that controls a servomotor which drives the axis, and
• a fourth reversing point detection that detects reversing point in the direction of the axis on the basis of positional information of a movable portion of the machine;
• visualizing a reversing point location detected by the at least one reversing point detection, and generating an image in which the reversing point location is superimposed on an image of a workpiece machined by the machine;
• and
• outputting the image generated.