• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (11): 70-76.doi: 10.3901/JME.2018.11.070

• 产品装配技术专栏 • 上一篇    下一篇

基于曲面约束匹配算法的装配仿真定位方法

张秋爽1, 金鑫1, 张忠清2, 张之敬1, 尚可1   

  1. 1. 北京理工大学微小型制造研究所 北京 100081;
    2. 北京动力机械研究所 北京 100074
  • 收稿日期:2017-09-05 修回日期:2018-02-03 出版日期:2018-06-05 发布日期:2018-06-05
  • 通讯作者: 金鑫(通信作者),女,1971年出生,博士,副教授,博士研究生导师。主要研究方向为精密微小型加工装备与工艺技术,机械系统运行性能仿真技术。E-mail:jinxinbit@163.com
  • 作者简介:张秋爽,女,1993年出生,博士研究生。主要研究方向为精密零件的建模仿真及误差传递分析。E-mail:verena_bit@163.com
  • 基金资助:
    国家自然科学基金资助项目(51375054)。

Assembly Method Based on Constrained Surface Registration

ZHANG Qiushuang1, JIN Xin1, ZHANG Zhongqing2, ZHANG Zhijing1, SHANG Ke1   

  1. 1. Institute of Microscale Manufacturing, Beijing Institute of Technology, Beijing 100081;
    2. Beijing Institute of Power Machinery, Beijing 100074
  • Received:2017-09-05 Revised:2018-02-03 Online:2018-06-05 Published:2018-06-05

摘要: 随着工业科技的发展,现代制造业对零部件的装配精度提出了更高的要求,要求从系统制造的早期阶段预测最终产品的精度与性能,这有利于提高装配合格率、一致性及精度稳定性。在精密零件真实模型的装配仿真过程中,确定零件模型的装配定位是进行装配精度预测与控制首要解决的问题,其本质是两个带有几何误差的配合表面的精确匹配。提出一种基于曲面约束匹配算法的装配仿真定位方法,并通过试验验证,零件装配定位的预测值与实测值的相对误差在10%以内。该方法是准确有效的,具有很好的计算精度,可以快速准确地在真实接触状态下分析和验证装配出的产品是否符合精度要求,为产品的装配分析和公差设计提供良好的校验、反馈功能以及可视化手段。

关键词: 仿真, 几何误差, 精密装配, 曲面匹配

Abstract: With the development of industrial technology, modern manufacturing industry put forward higher requirements for the assembly accuracy of components, from the early stages of system manufacturing to predict the accuracy and performance of the final product, which is conducive to improving the assembly pass rate, consistency and accuracy. In the process of assembly simulation of the precision parts model, it is the primary problem to locate the position of assembly model for the prediction and control of assembly accuracy, which the essence is the exact match of two mating surfaces with geometric errors. An assembly method based on constrained surface registration is proposed. Experiments show that the method with good calculation accuracy is accurate and effective. The method can analyze and verify quickly whether the assembled product meets the accuracy requirements. On this basis, the good verification, feedback, and visualization for assembly analysis and tolerance design can be provided.

Key words: constrained surface registration, geometric errors, precision assembly, simulation

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