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Title: An automatic tolerance assignment approach for tolerance charting
Authors: Ji, P. 
Keywords: Dimensional chain
Linear programming
Proportional smoothing
Statistical tolerance model
Tolerance assignment
Tolerance chart
Issue Date: Nov-1994
Citation: Ji, P. (1994-11). An automatic tolerance assignment approach for tolerance charting. The International Journal of Advanced Manufacturing Technology 9 (6) : 362-368. ScholarBank@NUS Repository.
Abstract: There are two dimensional sets in a tolerance chart: the blueprint (B/P) dimensional and the working dimensional group. The interrelation between these dimensional groups makes it very difficult to assign appropriate tolerances to individual working dimensions. This paper deals with the automatic tolerance assignment problem in a tolerance chart, especially for computer-aided tolerance charting. After the manual methods of tolerance assignment are briefly discussed, a linear programming model is analysed. Owing to the impractical solution from the linear programming (LP) model, a proportional smoothing approach is described with a numerical example, which can assign appropriate tolerances automatically and systematically, based on the requirements of both blueprint dimensions and process capabilities. The result from this approach is compared with that of the LP model and the original manual procedure. Finally, the approach is extended to a statistical tolerance model. © 1994 Springer-Verlag London Limited.
Source Title: The International Journal of Advanced Manufacturing Technology
ISSN: 02683768
DOI: 10.1007/BF01748480
Appears in Collections:Staff Publications

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