光学基准镜粘接精度及胶层量化研究

Research on Precision and Quantitative Control of Optical Reference Mirror Adhesive Layer

为了实现光学基准镜胶层量化控制,优化基准镜粘接方法,首先设计了实验试件,选用产品常用的材料和胶粘剂,建立了实验试件模型,进行有限元分析,研究了不同胶层厚度的热应力和力学应力分布;然后通过粘接实验,研究了胶固化过程中粘接精度的变化情况。最后,通过热循环试验和力学试验,对粘接的实验试件进行鉴定级实验,验证了粘接厚度控制方法的可靠性,对比了环境实验前后的粘接精度。根据仿真分析和实验结果,给出了几种常用的粘接结构所对应的胶层厚度最优值,可以为工程实际提供数据支持。

In order to achieve quantitative control of the optical reference mirror adhesive layer and to optimize reference mirror bonding method,test specimen are designed and common material and adhesives are selected.The specimen model is established and finite element analysis is carried out,by which stress distribution of different adhesive layer thicknesses is researched.Bonding experiment is conducted and change of precision is studied during the curing process of the adhesive.Then thermal test and mechanical test are carried out by identification level.The reliability of the bond thickness control method is verified and the precision before and after environmental test.Conclusively,the recommended values for the adhesive layers of several common structures,which provides data support for subsequent bonding work improvements.