Method for creating tool moving path data, its manufacturing apparatus, processing method, and processing system

摘要

A tool constraint surface (12), which is spaced from the three-dimensional curved surface (2-2) to be in the plane normal direction by the radius dimension of the rotary working tool (20), is set, and a path constraint surface (32) is set for restraining the movement path of the rotary working tool (20) according to the shape of the three-dimensional curved surface (22) The intersection line 34 is obtained as a three-dimensional curve, and tool movement path data is generated. In this way, since the desired surface can be set as the path constraint surface (32), the degree of freedom of setting of the tool moving path becomes high, and the suitable tool movement path can be set according to the shape of the three-dimensional curved surface (22) to be produced, and the three-dimensional curve is obtained Since the tool movement path data is generated by the expression, the amount of data can be reduced while maintaining the high machining accuracy as compared with the case where the tool moving path data is created by the point sequence data consisting of many tool passing points.