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A Tolerance Analysis Approach with Modified Jacobian Matrix and Torsor for Mechanical Products
| 题名： | A Tolerance Analysis Approach with Modified Jacobian Matrix and Torsor for Mechanical Products |
| 正文语种： | 中文 |
| 作者： | Li Qisheng Yang Zhihong Liu Yuetian Zhang Gengnan Li Hui |
| 作者单位： | Changan Automobile Company Limited Laboratory of High-efficiency and Clean Mechanical Manufacturing(Shandong University)Ministry of Education |
| 关键词： | tolerance analysis stack-up path jacobian matrix torsor |
| 摘要： | Mechanical products usually consist of many components and parts.A mechanical part always shows variations in its ge-ometrical characteristics because of uncertainties in manufacturing processes.Quality is often reflected by how well tolerances and func-tional requirements are being achieved by the manufacturing processes in the final product.The appropriate allocation of tolerances among the different parts of an assembly is the fundamental tool to ensure assemblies that work correctly at a lower cost.Therefore,an efflicient tolerance analysis method must be applied.But existing models are often based on points which are limited and difficult,and the impact of the tilted tolerance zone along the direction of analysis isn't considered in many models.The paper proposes the unification of modified Jacobian matrix and modified torsor along the direction of analysis.A new method to get the stack-up path is proposed.The calculation of percentage contribution to assembly error from impact factors is presented.This approach has been illustrated by a numerical example. |
| 会议日期： | 20171024 |
| 会议举办地点： | 上海 |
| 会议名称： | 第19届亚太汽车工程年会暨2017中国汽车工程学会年会 |
| 出版日期： | 1024-01-20 |
| 母体文献： | 第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集 |
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