Patent ID: 7338349

Claim:
An apparatus for cylindrically grinding workpieces, comprising: a first holding tool for positioning pre-grinding workpieces, the first holding tool including at least one first holding member, at least one first resisting member, and at least one first back plate, the at least one first holding member defining at least one first groove configured for containing the pre-grinding workpieces to be partially ground, the first resisting member and the first back plate being detachably connected to two opposite sides of the at least one first holding member for resisting the pre-grinding workpieces; and a second holding tool for positioning partially ground workpieces, the second holding tool including at least one second holding member, at least one second resisting member, and at least one second back plate, the second holding member defining at least one second groove for containing the partially ground workpieces, the second resisting member and the second back plate detachably being connected to two opposite sides of the second holding member for resisting the partially ground workpieces; wherein the first holding tool has a first mating surface with the first groove defined therein, the second holding tool has a second mating surface with the second groove defined therein, the first groove aligns with the second groove when the first mating surface mates with the second mating surface, the at least one first groove and the at least one second groove respectively have a first groove shape and a second groove shape different from the first groove shape, the first groove shape of the at least one first groove is thereby configured for receiving the pre-grinding workpieces, and the second groove shape of the at least one second groove is thereby configured for receiving the partially ground workpieces.