基于JSS矩阵的装配误差传递路径求解方法

发布时间：2018-05-25 06:18

本文选题：小位移旋量理论 + 多色集合理论　；参考：《机械工程学报》2015年20期

【摘要】：采用小位移旋量描述结合面误差,分析常见装配结合面的误差传递属性。定义包含工程语义的结合面符号用以描述结合面类型和配合关系。结合多色集合理论,建立可描述装配关系、结合面类型和误差传递属性的结合面及误差关系围道矩阵-结合面符号(Joint surface symbols,JSS)矩阵。提出基于JSS矩阵的装配误差传递路径搜索方法,建立结合面实际误差传递属性矩阵,讨论获取各误差分量传递路径的方法。针对并联误差传递路径的不确定性问题,提出以精度最高作为判别有效误差传递路径的依据,基于雅可比旋量理论建立误差模型,获取与装配体精度要求相关的误差分量的有效误差传递路径。以一个典型装配体的误差传递路径求解为例,验证了论文研究方法的可行性与实用性。
[Abstract]:Small displacement spinor is used to describe the joint surface error and the error transfer attribute of the common assembly joint surface is analyzed. The associative surface symbol including engineering semantics is defined to describe the type and relationship of the joint surface. Based on the theory of polychromatic set, the associative surface and error relation matrix, which can describe the assembly relation, the type of surface and the attribute of error transfer, are established. This paper presents an assembly error transfer path search method based on JSS matrix, establishes the real error transfer attribute matrix of the combined surface, and discusses the method of obtaining the transfer path of each error component. Aiming at the uncertainty of parallel error transfer path, this paper presents an error model based on Jacobian spinor theory, which takes the highest accuracy as the basis for judging the effective error transfer path. The effective error transfer path of the error component related to the assembly accuracy requirement is obtained. Taking the error transfer path of a typical assembly as an example, the feasibility and practicability of the research method are verified.
【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(51175161,51475152)
【分类号】：TG95

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