面向公差技术的几何要素自由度表示与操作及其应用

中国机械工程 ›› 2015, Vol. 26 ›› Issue (11): 1509-1515.

面向公差技术的几何要素自由度表示与操作及其应用

吴玉光1;刘玉生2

1.杭州电子科技大学，杭州，310018
2.浙江大学CAD&CG国家重点实验室，杭州，310058

出版日期:2015-06-10 发布日期:2015-06-05
基金资助:
国家自然科学基金资助项目(51175132,61173126)

DOF Representation and Operation of Geometric Feature and Its Applications for Tolerance Technology

Wu Yuguang1;Liu Yusheng2

1.Hangzhou Dianzi University,Hangzhou,310018
2.The State Key Lab of CAD&CG,Zhejiang University,Hangzhou,310058

Online:2015-06-10 Published:2015-06-05
Supported by:
National Natural Science Foundation of China（No. 51175132,61173126）

摘要/Abstract

摘要：

描述了几何要素的本征方向和本征自由度概念、几何要素自由度的表示方法和约束自由度的计算规则。根据基本几何元素的几何特征以及与基准要素的位置关系确定了几何要素的本征方向，根据几何量测量原理，提出了基准要素约束自由度的计算方法，建立了基准体系约束自由度的计算规则。根据公差类型与基准要素和目标要素的关系，建立了公差设计正确性、完整性验证的具体规则，提出了基于自由度分析的公差标注正确性验证方法。

关键词: 自由度, 本征自由度, 约束能力, 公差验证

Abstract:

The intrinsic direction of geometric feature, the representation method and calculation rules of DOF of geometric feature were proposed. The intrinsic direction of geometric feature was determined based on the geometric characteristics and position relations among toleranced geometry feature and datum geometry feature. According to the geometric measurement principles, the computation method of constraint capability of datum feature to the DOF of target feature was proposed,and the calculation rules of constrained DOF of toleranced features were proposed by datum reference frames. The tolerance specification validation method were proposed according to the relationship among tolerance type and geometry of the datum and target entity, and the correctness and completeness validation rules were discussed against the dimensioning and tolerancing standards and against good practice rules in industries.

Key words: degree of freedom (DOF), intrinsic DOF, constraint capability, tolerance verification

中图分类号:

TP39.72

吴玉光, 刘玉生. 面向公差技术的几何要素自由度表示与操作及其应用[J]. 中国机械工程, 2015, 26(11): 1509-1515.

Wu Yuguang, Liu Yusheng. DOF Representation and Operation of Geometric Feature and Its Applications for Tolerance Technology[J]. China Mechanical Engineering, 2015, 26(11): 1509-1515.

参考文献

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