Interference fit control for weak micro-parts based on deformation detection

Lie BI; Juan ZHANG; Yi YANG; Wen-rong WU; Xi DAI

doi:10.37188/OPE.20212910.2421

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Interference fit control for weak micro-parts based on deformation detection

Micro/Nano Technology and Fine Mechanics | 更新时间：2021-11-01

- Interference fit control for weak micro-parts based on deformation detection
- Optics and Precision Engineering Vol. 29, Issue 10, Pages: 2421-2431(2021)
- 作者机构：
  
  中国工程物理研究院激光聚变研究中心，四川绵阳 621900
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20212910.2421
  CLC： TP273.3
- Received：09 March 2021，
  
  Revised：09 April 2021，
  
  Published：15 October 2021
- 稿件说明：
移动端阅览
毕列,张娟,杨毅等.基于形变检测的弱微零件过盈装配控制[J].光学精密工程,2021,29(10):2421-2431.

BI Lie,ZHANG Juan,YANG Yi,et al.Interference fit control for weak micro-parts based on deformation detection[J].Optics and Precision Engineering,2021,29(10):2421-2431.
毕列,张娟,杨毅等.基于形变检测的弱微零件过盈装配控制[J].光学精密工程,2021,29(10):2421-2431. DOI： 10.37188/OPE.20212910.2421.

BI Lie,ZHANG Juan,YANG Yi,et al.Interference fit control for weak micro-parts based on deformation detection[J].Optics and Precision Engineering,2021,29(10):2421-2431. DOI： 10.37188/OPE.20212910.2421.

摘要

针对过盈微装配中弱微零件易损的问题，以激光惯性约束聚变（Inertial Confinement Fusion，ICF）研究中微靶关键部件—冷冻罩（Thermomechanical Package，TMP）组件装配作为研究对象，开展弱微零件过盈装配方法研究。首先，针对装配空间狭小及存在视觉遮挡，导致难以实现装配过程中硅臂形变检测的问题，提出了基于灰度变化的形变检测方法并建立了小爪灰度—形变模型；然后，针对受到显微视觉检测精度影响，硅臂与套筒微小位姿偏差不易检测的问题，基于硅臂受力变形情况分析，提出了硅臂与套筒位姿偏差定性判断方法，实现两者微小位姿偏差的检测；最后，基于零件灰度变化及几何分析，提出了微装配过程位姿偏差定量计算方法并设计了过盈装配控制策略。实验结果证明了所提方法的有效性，并且实现了过盈20~26 μm的TMP组件无损装配。该方法适用于微机电系统制造中微轴孔过盈装配。

Abstract

To address the problem of weak micro-parts vulnerable to interference fit damage in MEMS manufacturing

an interference fit control method for weak micro-parts was studied. The micro-assembly process of the thermomechanical package component (key component in inertial confinement fusion research) was our research topic. First

to address difficulty in detecting deformation of the silicon arm in the assembly process owing to the small assembly space and visual occlusion

a detection method based on gray-scale variations was proposed

and a model of the relationship between gray-scale and deformation was established. Next

to address difficulty in detecting the tiny pose deviation between the silicon arm and the sleeve owing to limited microscopic visual detection accuracy

a qualitative method of judging the pose deviation

based on pressure deformation analysis

is presented. Finally

a quantitative method for assessing the pose deviation was proposed based on gray-scale variations and geometric analysis of parts

completing the overall control strategy design. Experimental results indicated that the proposed method is effective

and thermomechanical package assemblies with interference of 20 µm~26 µm were realized. This method is suitable for interference fit of micro-axis and micro-hole parts in MEMS manufacturing.

关键词

Keywords

references

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Related Institution

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