Conceptional Setup Design Oriented Locating Error Analysis for Workpiece-fixture System
Inaccuracies of machining fixtures location cause a deviation of workpiece from its nominal geometry position. To achieve an acceptable machining part, this deviation must be controlled within the allowed limits specified by corresponding geometric tolerances, in this paper the relationship between the locating inaccuracies and the machining errors is studied. By geometry analysis, a mathematical model to predict the deviation of workpiece at a feature resulted by a set of known location deviation of iocators is formulated. Further, optimum method is employed to achieve allowed Iocator error bounds according to that the required workpiece geometry tolerance at a feature is not violated. A simplified method is put forward to facilitate the solution of the optimum process. The method can be used to verify the fixture design and error analysis for multiple stations machining process. Finally, a case study has been used to support and validate the proposed model.
Workplece-fixture system Conceptional setup design Locating error Error modeling
Zhang Faping Tang Shuiyuan Yanyan Chen Aiqing
School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing, 100081,China Mathematic department Jiaozuo Normal College Jiaozuo, Henan, 454000,China
国际会议
长沙
英文
1015-1018
2010-05-11（万方平台首次上网日期，不代表论文的发表时间）