摘要
探讨了各种公差区域和各种连接的小位移旋量(SD T)的描述方法;研究如何用表面模型来实现对装配体的描述,并且借助于小位移旋量确定装配体任意表面之间的相对位置;根据各个功能要素对于产品的装配功能要求的影响,创建三维公差分析尺寸链,实现面向装配的三维尺寸和几何公差分析;最后给出公差分析实例对所提出的方法加以验证。
The description methods of various tolerance zones and kinematic links based on SDT are discussed. The surface models are applied to describe an assembly, and SDT is used to express the relative position between any two surfaces of an assembly; According to the effect of each functional element on the whole functional requirements of products, the 3-D dimension-chain is created, and 3-D dimensional and geometrical tolerance analysis for assembly is realized. The engineering example involving 3-D tolerance analysis is given to test the proposed method.
出处
《机械工程师》
2014年第12期4-7,共4页
Mechanical Engineer
基金
湖北省教育厅科学技术研究重点项目(D20123404)
江汉大学机电与建筑工程学院院级项目(GS004)
关键词
小位移旋量
公差建模
三维公差分析
表面模型
small displacement torsor
tolerance modeling
three dimensional tolerance analysis
surface model
