基于装配定位优先级的并联结合面误差建模

发布时间：2018-08-07 20:05

【摘要】：分析了并联结合面在装配定位优先级意义下装配误差的形成机理与计算方法。针对常见的平面结合面与圆柱结合面,分析了误差形成和装配精度失效的原因,采用小位移旋量(SDT)法描述了误差变动。针对并联结合面间位姿变动的相互影响,定义了装配定位优先级的概念,并详细分析了并联结合面装配定位优先级的判定依据。根据装配定位优先级确定了并联的各结合面误差组成及计算方法。列举了常见的并联结合面形式,并以一组常见并联结合面的装配误差分析为例,验证了该方法的可行性,为装配体误差分析、零件精度设计、装配成功率计算等提供了借鉴。
[Abstract]:The forming mechanism and calculation method of assembly error in the sense of assembly location priority are analyzed. In this paper, the causes of error formation and failure of assembly accuracy are analyzed, and the error variation is described by small displacement spinor (SDT) method. The concept of assembly location priority is defined in view of the mutual influence of position and pose change between parallel joints, and the decision basis of assembly location priority of parallel joint plane is analyzed in detail. According to the assembly location priority, the error composition and calculation method of parallel connection are determined. The common form of parallel connection surface is listed, and an example of assembly error analysis of common parallel joint surface is given. The feasibility of this method is verified, which provides a reference for assembly error analysis, part precision design, assembly success rate calculation and so on.
【作者单位】：湖南大学汽车车身先进设计制造国家重点实验室;
【基金】：国家自然科学基金资助项目(51175161,51305132)
【分类号】：TG95

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