Vacuum chuck
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United States of America Patent
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-
Mar 6, 1990
Grant Date -
N/A
app pub date -
Dec 27, 1988
filing date -
Feb 26, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The vacuum chuck, which is an accessory device for holding a workpiece in machining and inspection, has a suction head made of a porous sintered particles of a thermoplastic resin, e.g., a fluorocarbon resin, preferably, bonded to the chuck base. The suction head is free from the problem of unreliableness of holding of workpieces without the danger of damaging the workpiece. The outer peripheral surfaces of the sucking head are provided with an air-impermeable layer to increase the efficiency of suction by preventing leakage of vacuum. The water-and-oil-resistance of the suction head can be improved by blending the powder of the thermoplastic resin with a powder of a thermosetting resin, e.g., epoxy resin.
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