Method of abrading both faces of work piece
AssigneeFujikoshi Machinery Corp.
InventorsTadakazu Miyashita, Tsuyoshi Hasegawa, Atsushi Kajikura, Norihiko Moriya
Life of this patent
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Abstract
Method for abrading a work piece with a fixed load including a first abrading process in which pressure of a cylinder chamber of a cylinder unit suspending an upper abrasive plate is adjusted in order to apply first pressure to the work piece via the upper abrasive plate without applying the full weight of the upper abrasive plate and a second abrading process in which the pressure of the cylinder chamber is readjusted in order to to apply second pressure which is higher than the first pressure to the work piece via the upper abrasive plate without applying the full weight of the upper abrasive plate.
Claims11
A method for abrading both faces of a work piece in an abrasive machine including:
- a rotatable lower abrasive plate;
- a rotatable upper abrasive plate being provided to face said lower abrasive plate so as to clamp the work piece with said lower abrasive plate;
- a cylinder unit having pressure chamber and a rod from which said upper abrasive plate is suspended, said cylinder unit moving said upper abrasive plate in a vertical direction;
- and
- said method comprising:
- varying the pressure in said pressure chamber to provide different pressures for different abrading process, said step of varying the pressure in said pressure chamber comprising the steps of:
- adjusting the pressure of said pressure chamber of said cylinder unit in a first abrading process so as to apply a first pressure to the work piece via said upper abrasive plate without applying the full weight of said upper abrasive plate;
- and
- readjusting the pressure of said pressure chamber in a second abrading process so as to apply a second pressure which is higher than the first pressure to the work piece via said upper abrasive plate without applying the full weight of said upper abrasive plate.
Dependencies are inferred from the claim text.