| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a point sequence generation method, a point sequence generation program and a point sequence generation device, needed for high-accuracy reproduction of a curved surface, and to provide a machine tool using them. <P>SOLUTION: In this point sequence generation method for generating a plurality of point sequences for defining the reproduced curved surface of an object from a point group comprising three-dimensional coordinate information representing the curved surface of the object, a computer executes: a point sequence extraction process of extracting a point sequence comprising a plurality of points inside the point group; an analyzing point sequence creation process of creating an analyzing point sequence from the point sequence; a curved surface analysis processing process of performing curved surface analysis by use of the analyzing point sequence, and calculating curved surface information; a characteristic point detection process of detecting a characteristic point wherein a direction of the analyzing point sequence and a direction of a normal section including a point wherein a normal curvature becomes zero accord in each point of each analyzing point sequence; and a point sequence generation process of inserting the characteristic point into the plurality of point sequences inside the point group comprising the three-dimensional coordinate information or the analyzing point sequence, and setting them as new point sequences. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
