Seminar. Modern CNC Manufacturing Technologies for. Optical Ceramics. Kazuo
Inamori ... The DMG process uses computer numerically controlled (CNC) ...
Seminar Modern CNC Manufacturing Technologies for Optical Ceramics Kazuo Inamori School of Engineering Date: Thursday, September 23, 2010 Time: 10:20 AM – 11:10 AM Location: BMH 106
Dr. Shai Shafrir OptiPro Systems
Dr. Shafrir is a full time Scientist at OptiPro Systems, specializing in the fabrication of optical ceramics. At OptiPro he is working on the development of the UltraForm Finishing CNC machine. In addition, he serves as a Visiting Research Associate at the Department of Mechanical Engineering at the University of Rochester. He earned his Ph.D. in Materials Science at the University of Rochester in 2007, with a dissertation focusing on "Surface Finish and Sub-Surface Damage in Polycrystalline Optical Materials." After graduation, he joined the Laboratory for Laser Energetics as a Research Associate until 2009. He is one of the developers of a Zirconia coating carbonyl iron based magnetorheological fluid for Magnetorheological Finishing (MRF).
ABSTRACT The combination of extreme accuracy requirements and the processing of difficult brittle materials drove the Center for Optics Manufacturing (COM) at the University of Rochester to develop the concept of deterministic microgrinding (DMG) of precision optics (1992). COM collaborated with industry and government agencies to take the concept of DMG from the laboratory to the optical fabrication shop floor. The DMG process uses computer numerically controlled (CNC) platforms to fabricate a pre-polished surface from the blank material. The revolution of DMG machinery was extended to the polishing step with the introduction of magnetorheological finishing (MRF), a precision polishing process that uses a compliant magnetic fluid lap (1994). DMG (first commercialized by OptiPro Systems) and MRF (commercialized by QED Technologies) are proven successes on the factory floor and have been adopted by optical shops large and small. In more recent years (2005), COM together with OptiPro Systems developed a new conformal polishing technology called UltraForm Finishing (UFF). UFF uses a continuous polishing belt with either loose or bonded abrasives. The extreme accuracy and computer controlled stability of DMG, MRF, and UFF makes the grinding and polishing of precision optical surfaces possible and affordable. In this presentation we will review the concept of deterministic fabrication of precision optics. New innovation technologies and machines will be discussed with real life examples.
