中国机械工程 ›› 2016, Vol. 27 ›› Issue (03): 376-382.

• 机械基础工程 • 上一篇    下一篇

薄板装配工艺系统可靠性建模与分析

文泽军1;刘继军1,2;赵延明1;胡忠举2;刘;湛1;陈立锋2   

  1. 1.湖南科技大学机械设备健康维护湖南省重点实验室,湘潭,411201
    2.湖南科技大学难加工材料高效精密加工技术湖南省重点实验室,湘潭,411201
  • 出版日期:2016-02-10 发布日期:2016-02-03

Reliability Modeling and Analysis for Process System of Sheet Metal Assembly

Wen Zejun1;Liu Jijun1,2;Zhao Yanming1;Hu Zhongju2;Liu Zhan1;Chen Lifeng2   

  1. 1.Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology,Xiangtan,Hunan,411201
    2.Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,Hunan University of Science and Technology,Xiangtan,Hunan,411201
  • Online:2016-02-10 Published:2016-02-03

摘要:

提出一种计入销/孔(槽)公差面向产品质量的薄板装配工艺系统可靠性建模方法。综合考虑定位销公差、零件孔(槽)公差和定位销磨损量,构建薄板装配偏差统计数字特征模型;分析推导定位销过程磨损模型,探讨装配质量与工艺系统可靠性之间的关系,综合考虑定位销故障率和过程磨损量对工艺系统可靠性的影响,建立工艺系统结构可靠性模型和面向装配质量的可靠性模型,继而形成薄板装配工艺系统可靠性建模方法;以车身侧板装配为例,应用提出的建模方法分析车身侧板装配工艺系统可靠性。结果表明:定位销磨损、夹具布局和销/孔(槽)公差是影响车身侧板装配工艺系统可靠性的重要因素。该方法为薄板装配工艺系统可靠性研究提供了一种新的思路。

关键词: 可靠性, 工艺系统, 装配偏差, 磨损模型

Abstract:

A product quality oriented reliability modeling method was developed containing pin/hole (slot) tolerance for process system of sheet metal assembly. Firstly, considering locating pin tolerance, part hole (slot) tolerance and pin wear, a statistics feature model of assembly deviation was presented. Then the locating pin wear model was deduced and analyzed, according to analyze the relationship between assembly qualities and process system reliability, and considering the impacts of locating failures rate and process wear on the process system reliability, the structure reliability model and assembly quality oriented reliability model of process system were built, then the process system reliability modeling method was formed. An automotive body side panel assembly was given as an example, the assembly process system reliability was analyzed based on the modeling method. The results show that locating pin wear, fixture layout and tolerance of pin/hole (slot) are important factors that affect process system reliability of automotive body side assembly. The method provides a new way of process system reliability analyses for product assembly. 

Key words: reliability; , process system; , assembly deviation; , wear model

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