A general approach to automatically calculate a datum feature simulator (DFS) for a real part model is proposed in this paper. The geometric errors of the real part are represented by the controlling point variation model (CPVM) of the geometric feature, and the geometric deviations are simulated and generated by the Monte Carlo method. The linear feature and planar feature CPVM models are first introduced; these models can simulate all possible size, position, form, and orientation variations. Furthermore, these models are compatible with the ASME/ISO Standards for geometric tolerances. The determining rules of DFS based on the CPVM model are presented, according to the definitions of DFS by ASME standards. The CPVM models for three common datum features, i.e., the planar datum feature, cylindrical datum feature, and prismatic datum feature, are then established, and the algorithms to determine the corresponding DFSs for a different order of datum precedence are developed. An example is given to demonstrate the establishing method.
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ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 21–24, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5008-4
PROCEEDINGS PAPER
An Establishing Method of the Datum Feature Simulator Based on CPVM Model Available to Purchase
Yuguang Wu,
Yuguang Wu
Hangzhou Dianzi University, Hangzhou, China
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Qiqi Gu
Qiqi Gu
Hangzhou Dianzi University, Hangzhou, China
Search for other works by this author on:
Yuguang Wu
Hangzhou Dianzi University, Hangzhou, China
Qiqi Gu
Hangzhou Dianzi University, Hangzhou, China
Paper No:
DETC2016-59432, V01BT02A004; 9 pages
Published Online:
December 5, 2016
Citation
Wu, Y, & Gu, Q. "An Establishing Method of the Datum Feature Simulator Based on CPVM Model." Proceedings of the ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1B: 36th Computers and Information in Engineering Conference. Charlotte, North Carolina, USA. August 21–24, 2016. V01BT02A004. ASME. https://doi.org/10.1115/DETC2016-59432
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