IOE OpenIR  > 先光中心
Improvement of active lap processing in grinding of 1.8m primary mirror
Liu, Haitao1,2; Wu, Fan1; Zeng, Zhige1; Fan, Bin1; Wan, Yongjian1; Zhang, Yong1; Xian, Linhan1
Volume9280
Pages92800Z
2014
Language英语
ISSN0277786X
DOI10.1117/12.2068096
Indexed ByEi
Subtype会议论文
AbstractThe computer controlled active lap (CCAL) is used to grind a 1.8m honeycomb primary mirror. One problem which is not totally solved by CCAL is the edge effect, also exists in many other fabricating methods. To reduce the CCAL edge effect, the pressure distribution on the contact face between lap and mirror is analyzed by finite element method (FEM). A new method is proposed to calculate the pressure curve from FEM results. A simplified model is used to approximate the pressure curve along the mirror radius when active lap covers the mirror center hole. The const-linear (C-L) model is used to describe the pressure curve when active lap overhang at the mirror out edge. The contact status between lap and mirror is also considered in this paper, and its influence is taken into the material removal rate calculation. The API's T3 laser tracker is used to measure the mirror surface shape and to check the correctness of the theoretical model. The results that we have got by now and the problems that still exist are reported in this paper. © 2014 SPIE.; The computer controlled active lap (CCAL) is used to grind a 1.8m honeycomb primary mirror. One problem which is not totally solved by CCAL is the edge effect, also exists in many other fabricating methods. To reduce the CCAL edge effect, the pressure distribution on the contact face between lap and mirror is analyzed by finite element method (FEM). A new method is proposed to calculate the pressure curve from FEM results. A simplified model is used to approximate the pressure curve along the mirror radius when active lap covers the mirror center hole. The const-linear (C-L) model is used to describe the pressure curve when active lap overhang at the mirror out edge. The contact status between lap and mirror is also considered in this paper, and its influence is taken into the material removal rate calculation. The API's T3 laser tracker is used to measure the mirror surface shape and to check the correctness of the theoretical model. The results that we have got by now and the problems that still exist are reported in this paper. © 2014 SPIE.
Conference NameProceedings of SPIE: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Conference Date2014
Citation statistics
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7612
Collection先光中心
Affiliation1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
2. University of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Liu, Haitao,Wu, Fan,Zeng, Zhige,et al. Improvement of active lap processing in grinding of 1.8m primary mirror[C],2014:92800Z.
Files in This Item:
File Name/Size DocType Version Access License
2014-2110.pdf(1899KB)会议论文 开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Haitao]'s Articles
[Wu, Fan]'s Articles
[Zeng, Zhige]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Haitao]'s Articles
[Wu, Fan]'s Articles
[Zeng, Zhige]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Haitao]'s Articles
[Wu, Fan]'s Articles
[Zeng, Zhige]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.