Disk polisher assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 31, 1991
Grant Date -
N/A
app pub date -
Aug 24, 1990
filing date -
Aug 24, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disk polisher has a horizontal turntable for moving workpieces around thereon and an assembly for holding flat grinding surfaces of grinding stone against these moving workpieces. The grinding stone pieces are provided with throughholes and are attached to a supporting body having internal passageways. Orifices are provided to connect these internal passageways with the throughholes such that a high-pressure fluid such as air can be directed through the passageways and the throughholes to apply external force on processed workpieces which tend to stick to the grinding surfaces due to the surface tension of water used for grinding. The diametrical shapes of the orifices and throughholes are carefully determined such that the processed workpieces can be reliably separated while the pressure drop inside the passageway due to escaping air will be minimized.
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