9 January 2018 Design of an ultraprecision computerized numerical control chemical mechanical polishing machine and its implementation
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Abstract
The chemical mechanical polishing (CMP) is a key process during the machining route of plane optics. To improve the polishing efficiency and accuracy, a CMP model and machine tool were developed. Based on the Preston equation and the axial run-out error measurement results of the m circles on the tin plate, a CMP model that could simulate the material removal at any point on the workpiece was presented. An analysis of the model indicated that lower axial run-out error led to lower material removal but better polishing efficiency and accuracy. Based on this conclusion, the CMP machine was designed, and the ultraprecision gas hydrostatic guideway and rotary table as well as the Siemens 840Dsl numerical control system were incorporated in the CMP machine. To verify the design principles of machine, a series of detection and machining experiments were conducted. The LK-G5000 laser sensor was employed for detecting the straightness error of the gas hydrostatic guideway and the axial run-out error of the gas hydrostatic rotary table. A 300-mm-diameter optic was chosen for the surface profile machining experiments performed to determine the CMP efficiency and accuracy.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chupeng Zhang, Chupeng Zhang, Huiying Zhao, Huiying Zhao, Xueliang Zhu, Xueliang Zhu, Shijie Zhao, Shijie Zhao, Chunye Jiang, Chunye Jiang, } "Design of an ultraprecision computerized numerical control chemical mechanical polishing machine and its implementation," Optical Engineering 57(1), 015104 (9 January 2018). https://doi.org/10.1117/1.OE.57.1.015104 . Submission: Received: 16 August 2017; Accepted: 6 December 2017
Received: 16 August 2017; Accepted: 6 December 2017; Published: 9 January 2018
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