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Mathematical model of cylindrical form tolerance
被引：4
作者：
蔡敏
杨将新
吴昭同
机构：
[1] Department of Mechanical Engineering
[2] Zhejiang University
[3] Hangzhou
[4] China
关键词：
Tolerance zone;
Form tolerance;
Mathematical definition;
Mathematical model;
D O I：
暂无
中图分类号：
TP391.9 [计算机仿真];
学科分类号：
080203 ;
摘要：
Tolerance is essential for integration of CAD and CAM. Unfortunately, the meaning of tolerances in the national standard is expressed in graphical and language forms and is not adaptable for expression, processing and data transferring with computers. How to interpret its semantics is becoming a focus of relevant studies. This work based on the mathematical definition of form tolerance in ANSI Y14.5.1M-1994, established the mathematical model of form tolerance for cylindrical feature. First, each tolerance in the national standard was established by vector equation. Then on the foundation of toler- ance’s mathematical definition theory, each tolerance zone’s mathematical model was established by inequality based on degrees of feature. At last the variance area of each tolerance zone is derived. This model can interpret the semantics of form tolerance exactly and completely.
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页码：142 / 147
页数：6
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