Method of generating a numerical control program, apparatus for the same, and program for causing a computer to execute the method

摘要

In a method of generating a numerical control program in which, based on sectional shape data of a product to which a relief processing is to be performed, a numerical control program for turning-processing the product is generated in order to recognize a groove shape data existing in the vicinity of a corner as a relief sectional shape, wherein groove shape data is extracted from the sectional shape data, an intersection of a line segment parallel to a turning axis and a line segment that is not parallel to the line segment is calculated as a corner of the sectional shape data, and the groove shape data is recognized as a relief sectional shape in a case where dimensions of a frame which includes from the corner to the groove shape data are within predetermined dimensions.

主权项

1. A method of generating a numerical control program in which, based on sectional shape data of a product to which a relief processing is to be performed, a numerical control program for turning-processing the product is generated, the method comprising:
extracting, by a processor, groove shape data from the sectional shape data; calculating, by a processor, an intersection of a line segment parallel to a turning axis and a line segment that is not parallel to the line segment as a corner of the sectional shape data; determining dimensions of a frame from the calculated corner to the groove shape data; recognizing the groove shape data as a relief sectional shape in response to the determined dimensions of the frame being within predetermined dimensions such that the extracted groove shape is in a vicinity of the corner without overlapping with the corner; determining a relief shape pattern of the recognized relief sectional shape from among a plurality of relief shape patterns which are processed by a turning tool bit based on whether the relief sectional shape is equal to or larger than the corner in at least one direction; generating a relief processing program corresponding to the determined relief shape pattern; and integrating the relief processing program into the numerical control program for the turning-processing.