大口径传输反射镜在装配紧固力下的面形误差分析

发布时间：2018-02-13 01:16

本文关键词： 大口径反射镜装配面形精度蒙特卡罗仿真　出处：《中国机械工程》2015年09期 　论文类型：期刊论文

【摘要】：400mm级通光口径的大型传输反射镜是我国在建的高功率固体激光装置中的关键部件,反射镜的面形精度对最终的激光打靶精度有直接影响。针对反射镜所采用的螺纹紧固型装配固定方式,通过结构有限元分析和波面拟合方法研究了理论螺纹紧固力和反射镜面形变化定量作用规律。考虑零部件的制造误差、材料以及人为操作等变化因素的影响,实际中各个螺钉的紧固力在一定范围内呈随机分布,基于蒙特卡罗模拟仿真方法研究了实际螺钉紧固力的不确定性对反射镜面面形精度的影响,得出了满足面形精度要求的临界紧固力大小,为现场反射镜装配工艺的校准和优化提供了理论借鉴。
[Abstract]:The large transmission mirror with 400mm optical aperture is the key component of the high power solid-state laser device under construction in China. The precision of surface shape of mirror has a direct effect on the precision of laser shooting. By means of finite element analysis of structure and wave surface fitting method, the quantitative action law of theoretical thread fastening force and reflection mirror shape change is studied. The influence of components manufacturing error, material and artificial operation are considered. In practice, the fastening force of each screw is randomly distributed in a certain range. Based on Monte Carlo simulation method, the influence of the uncertainty of the actual screw fastening force on the surface precision of the reflector is studied. The critical fastening force to meet the requirements of surface shape accuracy is obtained, which provides a theoretical reference for the calibration and optimization of the field mirror assembly process.
【作者单位】：华中科技大学数字制造与装备技术国家重点实验室;清华大学;中国工程物理研究院;
【分类号】：TH744.5

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