The manual procedure of drafting engineering design is fast becoming obsolete, One of the important areas in CAPP is to automate tolerance assignment which is encountered in mechanical part design. This paper presents an approach for automating tolera...
The manual procedure of drafting engineering design is fast becoming obsolete, One of the important areas in CAPP is to automate tolerance assignment which is encountered in mechanical part design. This paper presents an approach for automating tolerance assignment using CAD database and tolerancing database in CAD drawing. The system is consisted of four major functions: feature extraction, feature inferencing, rule-based tolerance allocation, and automatic updating. AutoCAD R,1l is employed as CAD system and a computer program is developed by using AutoLlSP on PC-386.