Nc program generating device and nc program generating method

An NC program generating device that extracts shaping sites, which are process areas of a workpiece, based on three-dimensional geometrical data of the workpiece that is unprocessed and three-dimensional geometrical data of the workpiece that is processed, and generates an NC program in correspondence with the shaping sites that are extracted, comprising:

• a process attribute information setting unit that sets process attribute information that is used for generation of the NC program and includes information of a process operation that can be used to process the workpiece on a processing machine, in the three-dimensional geometrical data of the workpiece that is processed, wherein:
• the process attribute information setting unit sets the process attribute information of the workpiece, based on related information of the process operation that can be used to process the workpiece on the processing machine and a characteristic, a position, and a direction of a shaping site in a three-dimensional shape of the workpiece that is processed, the shaping site being configurable as the process attribute information for the workpiece on the processing machine, and also extracts, when setting up the process attribute information of the workpiece, feasible items of the process attribute information by use of at least one of information regarding a position of a processing tool included in the processing machine, information regarding an axial direction of a rotation axis around which the workpiece is rotated, information regarding an axial direction of a rotation axis around which the working tool is rotated, and information regarding a placement position of the workpiece.

An NC program generating method with which shaping sites, which are process areas of a workpiece, are extracted based on three-dimensional geometrical data of the workpiece that is unprocessed and three-dimensional geometrical data of the workpiece that is processed, and an NC program is generated in correspondence with the shaping sites that are extracted, comprising:

• a process attribute information setting step of setting process attribute information that is used for generation of the NC program and includes information of a process operation that can be used to process the workpiece on a processing machine, in the three-dimensional geometrical data of the workpiece that is processed, wherein:
• at the process attribute information setting step, the process attribute information of the workpiece is set, based on related information of the process operation that can be used to process the workpiece on the processing machine and a characteristic, a position, and a direction of a shaping site in a three-dimensional shape of the workpiece that is processed, the shaping site being configurable as the process attribute information for the workpiece on the processing machine, and, when setting up the process attribute information of the workpiece, feasible items of the process attribute information are extracted by use of at least one of information regarding a position of a processing tool included in the processing machine, information regarding an axial direction of a rotation axis around which the workpiece is rotated, information regarding an axial direction of a rotation axis around which the working tool is rotated, and information regarding a placement position of the workpiece.