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《China Mechanical Engineering》 2016-02
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Assembly Accuracy Allocation Method Based on JSS Matrix

Lü Cheng;Liu Zijian;State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,Hunan University;  
Joint surface error was described by SDT,typical joint surface error transfer properties were analyzed.Information integrated expression symbols of joint surfaces were defined,combined with the polychromatic sets theory,JSS matrix,was established,that could describe assembly relationship,joint surface type and error transfer properties,and then assembly error transfer path search method was proposed,critical error distribution that affected the precision of assembly was identified.Assembly error model was established based on the multi-body kinematics principles,and combined with assembly accuracy requirements,the accuracy allocation of joint surface and the relevant geometric element were implemented,then the basis was provided for tolerance design and accuracy control during assembly process.At last,the feasibility and practicability of the proposed method was verified by example analyses.
【Fund】: 国家自然科学基金资助项目(51175161 51475152)
【CateGory Index】: TG95
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