Evaluation of circularity deviation from coordinate measurement data using an improved area hunting method. (2021)

• Record Type: Journal Article
• Authors: Rajamohan, G.; Hoda, Shariqul
• Is Part Of: Materials today. Volume 46:Part 17(2021)
• Page Start: 7688
• Page End: 7694
• Publication Date: 2021
• Subjects: Geometric tolerances -- Form evaluation -- Minimum zone circularity -- Area hunting method -- Coordinate measurement data; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.02.091
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Manufactured parts generally deviate from their specified dimensions and shape due to approximations involved in machining and uncertainties introduced on account of variations in manufacturing processes. Such deviations are unavoidable and can affect their functionality. Shape deviations are controlled through geometric tolerances that must to be estimated to very high accuracies, since the acceptance or rejection of parts depend on them. A vast majority of engineering parts are cylindrical and hence the evaluation of geometric tolerances relevant to such features becomes more important. Circularity tolerance may be computed using several criteria. This paper presents an improved area hunting method for minimum zone circularity evaluation, a criterion recommended by several standards. The proposed algorithm is compared with some of the existing minimum zone algorithms using coordinate measurement data from literature. The results have been found to be at par or better than those algorithms.