DETERMINISTIC HIGH SPEED GRINDING OF SAPPHIRE DOMES

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 20779
Amount: $32,661.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Meller Optics, Inc.
P.o. Box 6001, Providence, RI, 02940
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ted Turnquist
 (401) 331-3717
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Sapphire, and other hard brittle materials, are highly regarded as missile domes because of their high mechanical strength and thermal characteristics. Conventional finishing processes used to provide for the final configuration of the domes can be as much as 50 percent or more of the total cost. A new fabrication process for sapphire domes is proposed to reduce the cost of grinding from a scooped dome blank to a prepolished stage by 20 to 30 percent. Specialized sapphire grinding tools and abrasives will be integrated with the high speed, statistically controlled CIM prototype system currently in use at the University of Rochester. The OPTICAM System had already demonstrated a 20 to 30 percent reduction in the fabrication times for several common glasses. A new fabrication process for grinding a saphire dome to a prepolished condition will be developed and tested. We seek to prove that a similar time reduction can be achieved in sapphire. A second sapphire dome will be fabricated from a scooped blank to the same accuracy using conventional methods. These times will be used as a baseline for evaluation of the high speed technique.

* information listed above is at the time of submission.

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