基于数据配准的零件精密装配最佳接触状态研究

doi:10.3969/j.issn.1000-1093.2018.01.014

兵工学报 ›› 2018, Vol. 39 ›› Issue (1): 127-136.doi: 10.3969/j.issn.1000-1093.2018.01.014

基于数据配准的零件精密装配最佳接触状态研究

张体广，张发平，阎艳，吴迪，王戈，郭少伟

(北京理工大学机械与车辆学院, 北京 100081)

收稿日期:2017-03-02 修回日期:2017-03-02 上线日期:2018-03-13
通讯作者: 张发平(1970—)，男，副教授，硕士生导师 E-mail:zfpnew@163.com
作者简介:张体广(1985—)，男，博士研究生。E-mail: shdzhtg@163.com
基金资助:
国家“973”计划项目（613243）；国家自然科学基金项目（51275049）

Research on the Best Contact State of Precision Assembly Based on Data Registration

ZHANG Ti-guang, ZHANG Fa-ping, YAN Yan, WU Di, WANG Ge, GUO Shao-wei

(School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

Received:2017-03-02 Revised:2017-03-02 Online:2018-03-13

摘要/Abstract

摘要： 针对零件表面几何形状误差分布对装配精度的影响与零件装配后配合表面接触状态尚不清楚的问题，提出一种基于数据配准的零件配合表面最佳接触状态确定方法。分析零件表面几何形状误差分布特性，利用数据配准技术提出配合表面接触点确定方法，并采用粒子群优化算法求解最佳接触状态；在此基础上采用小位移旋量表示零件表面的几何形状误差，提出一种基于接触状态的配合误差计算方法，从而实现零件装配精度的初步预测；通过实验验证了所提模型和方法的有效性。研究结果表明：数据配准方法可确定零件装配时的接触点位置和接触状态，预测精密高刚度零件的装配精度；从统计意义上证明，零件的形状误差分布对精密装配的影响不可忽略。

关键词: 几何形状误差, 数据配准, 粒子群优化算法, 配合误差, 装配精度

Abstract: A method to determine the best contact state of precision assembly based on data registration is proposed for the effects of form error and its distribution on the assembly precision and the unknown contact state after assembly. The distribution character of geometric form error is analyzed. A method to determine the contact point is proposed using data registration technology. And the best contact state is solved based on particle swarm optimization (PSO). On this basis, the small displacement torsor (SDT) is used to express the form error of part surface, and the contact error is calculated to predict assembly accuracy based on contact point. The proposed method is verified by a case study. The results show that it is of great significance to predict the assembly precision by using the data registration method to determine the assembly contact state. Meanwhile, the distribution of form error has also an important influence on the assembly precision, which cannot be ignored in the research on precision assembly.Key

Key words: geometricformerror, dataregistration, particleswarmoptimization, contacterror, assemblyaccuracy

中图分类号:

TH161⁺.7

张体广，张发平，阎艳，吴迪，王戈，郭少伟. 基于数据配准的零件精密装配最佳接触状态研究[J]. 兵工学报, 2018, 39(1): 127-136.

ZHANG Ti-guang, ZHANG Fa-ping, YAN Yan, WU Di, WANG Ge, GUO Shao-wei. Research on the Best Contact State of Precision Assembly Based on Data Registration[J]. Acta Armamentarii, 2018, 39(1): 127-136.

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基于数据配准的零件精密装配最佳接触状态研究

Research on the Best Contact State of Precision Assembly Based on Data Registration

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