论文信息 - Computer-aided tolerance assignment procedure (CATAP) for design dimensioning

Computer-aided tolerance assignment procedure (CATAP) for design dimensioning

SUMMARY The manual procedure of drafting engineering designs is fast becoming obsolete. Newer systems for computer-aided design (CAD) drafting are emerging everyday. However, the process of including tolerance details in these CAD drawings is extremely complex and has very little evidence of existence in past literature. This paper identifies and computerizes a procedure for automatic tolerance assignment in CAD drawings. The procedure developed envelopes three major stages: feature extraction, feature infcrcncing, and rule-based tolerance allocation. The system was implemented on an IBM-PC compatible. The results established through example analysis verify the utility of the system.

[1] K. C. E. Truslove. The implications of tolerancing for computer-aided mechanical design , 1988 .

[2] Jerome C. Lange. Design Dimensioning With Computer Graphics Applications , 1984 .

[3] Faryar Etesami,et al. Tolerance verification through manufactured part modeling , 1988 .

[4] Pius J. Egbelu,et al. A knowledge based system for the specification of manufacturing tolerances , 1989 .

[5] Requicha,et al. Solid Modeling: A Historical Summary and Contemporary Assessment , 1982, IEEE Computer Graphics and Applications.

[6] Aristides A. G. Requicha,et al. Toward a Theory of Geometric Tolerancing , 1983 .

[7] Jr. Mikell P. Groover. Automation, production systems, and computer-aided manufacturing , 1980 .

[8] Richard A. Wysk,et al. A knowledge-based approach for automated process planning , 1988 .