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Computer-aided operational dimensioning for process planning

One of the important steps of process planning is to determine the tolerance and mean size for each working dimension. This paper presents a computer-aided operational diminsioning systems which can determine tolerances systematically and calculate mean sizes of working dimensions automatically for...

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Bibliographic Details
Published in:International journal of machine tools & manufacture 1995-10, Vol.35 (10), p.1353-1362
Main Authors: Ji, Ping, Ke, Mingyang, Ahluwalia, R.S
Format: Article
Language:English
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Summary:One of the important steps of process planning is to determine the tolerance and mean size for each working dimension. This paper presents a computer-aided operational diminsioning systems which can determine tolerances systematically and calculate mean sizes of working dimensions automatically for a process plan. The system is based on the tolerance charting technique. Firstly, a tree theoretic representation for a tolerance chart is described in this paper. Three trees can be generated from blue print dimensions, stock removals and working dimensions of a tolerance chart. The algorithms for generating the trees are provided, and these trees can be used to identify dimensional chains and solid stock removals in a tolerance chart. Then a linear programming model is built to determine the tolerance of each working dimension. Finally, a mathematical model of linear equations for calculating mean working dimensions is formulated from the dimensional chains.
ISSN:0890-6955
1879-2170
DOI:10.1016/0890-6955(95)00005-I