基于多色集合理论的几何公差信息推理及其规范性验证

发布时间：2018-03-01 07:40

本文关键词： 几何公差公差规范多色集合围道矩阵推理层次结构产品设计　出处：《计算机集成制造系统》2015年03期 　论文类型：期刊论文

【摘要】：针对基准体系、公差类型、附加符号等几何公差信息设计不规范的问题,提出基于多色集合理论的几何公差信息推理及其规范性验证方法。首先根据构建的几何公差本体模型,提出几何公差信息推理层次结构,并建立了该推理层次结构的多色集合模型。然后根据新一代产品几何规范,提炼了推理层次结构中不同层次信息之间的映射关系,形成了几何公差信息推理围道矩阵。在此基础上,通过分析基准约束的自由度方向,判断是否存在基准冗余和基准顺序不一致等问题,验证了基准体系的规范性;基于围道矩阵以及推导的几何公差信息推理算法,经过两步推理得到了适用的公差类型、附加符号,验证了几何公差设计结果的规范性。基于上述模型和算法开发了几何公差信息规范性验证软件模块,通过实例分析,证明了所提方法的可行性与有效性。
[Abstract]:Aiming at the nonstandard design of geometric tolerance information such as reference system, tolerance type and additional symbol, this paper proposes a method of geometric tolerance information reasoning and its normative verification based on polychromatic set theory. The hierarchical structure of geometric tolerance information reasoning is proposed, and the polychromatic set model of the reasoning hierarchy is established. Then, according to the new generation of product geometry specification, the mapping relations between different levels of information in the reasoning hierarchy are refined. Based on the analysis of the degree of freedom direction of the reference constraints, the standardization of the reference system is verified by judging whether there are some problems such as the redundancy of the datum and the inconsistency of the order of the datum. Based on the contour matrix and the derivation of geometric tolerance information reasoning algorithm, a suitable tolerance type, additional symbol, is obtained by two-step reasoning. Based on the above model and algorithm, the software module of geometric tolerance information normative verification is developed, and the feasibility and validity of the proposed method are proved by an example analysis.
【作者单位】：北京理工大学机械与车辆学院;
【基金】：国家自然科学基金资助项目(51275047)~~
【分类号】：TG801

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