Design of integrated-electrode tool for electrorheological finishing of optical glasses

doi:10.1007/s12200-011-0183-4

Front Optoelec Chin

2011, Vol. 4

Issue (4) : 467-471 https://doi.org/10.1007/s12200-011-0183-4

RESEARCH ARTICLE

Design of integrated-electrode tool for electrorheological finishing of optical glasses

Binbin CHEN¹, Haobo CHENG¹(

), Hon Yuen TAM², Hui LI¹

1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China; 2. Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, Hong Kong, China

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Abstract

Electrorheological (ER) finishing utilizes the flow of electrically stiffened abrasive fluid through a preset converging gap formed by the work-piece surface and a moving tool. An ER finishing tool characterized by cathode integrated with anode together is proposed, whose electric field distribution is finite-element-analyzed (FEA) and is useful to finish both conductive work-piece and non-conductive ones. Experiments were performed to finish a K9 glass by this tool. After 30 minutes polishing, the surface roughness was reduced from 8.46 to 2.53 nm Ra which is better than previously reported 2.9 nm. The result verified the validity of the integrated-electrodes tool for non-conductive optical glasses.

Keywords electrorheological (ER) finishing roughness material removal

Corresponding Author(s): CHENG Haobo,Email:chenghaobo@tsinghua.org.cn

Issue Date: 05 December 2011

Cite this article:

Binbin CHEN,Haobo CHENG,Hon Yuen TAM, et al. Design of integrated-electrode tool for electrorheological finishing of optical glasses[J]. Front Optoelec Chin, 2011, 4(4): 467-471.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0183-4
https://academic.hep.com.cn/foe/EN/Y2011/V4/I4/467

Fig.1 Schematic diagram of pin-type ER finishing tool

Fig.2 Schematic diagram of integration tool. (1) Motor; (2) rotational axis (cathode); (3) cylindrical tube (anode); (4) work-piece; (5) worktable

Fig.3 Schematic diagram of the head of tool

Fig.4 (a) Head of tool; (b) its electric field analysis by ANSYS

Tab.1 Experimental parameters

Fig.5 Relationship between surface roughness with polishing time

Fig.6 Surface roughness microstructure of finishing area. (a) Initial Ra=8.46 nm; (b) after finishing Ra=3.38 nm; (c) after finishing Ra=2.53 nm

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[1]	Haobo CHENG,Jingshi SU,Yong CHEN,Hon-Yuen TAM. Profile and roughness of electrorheological finishing optical surfaces[J]. Front. Optoelectron., 2015, 8(3): 306-313.
[2]	Haobo CHENG, Yunpeng FENG, Tan WANG, Zhichao DONG. Magnetorheological finishing of optical surface combined with symmetrical tool function[J]. Front Optoelec Chin, 2010, 3(4): 408-412.
[3]	Yao CHEN, Junbo FENG, Zhiping ZHOU, Christopher J. SUMMERS, David S. CITRIN, Jun YU. Simple technique to fabricate microscale and nanoscale silicon waveguide devices[J]. Front Optoelec Chin, 2009, 2(3): 308-311.

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