Edge polisher
AssigneeSpeedfam Corporation
InventorsShunji Hakomori, Seiichi Maeda, Isao Nagahashi
Life of this patent
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Abstract
Described herein is an edge polisher for polishing chamfered edge portions on the front and rear sides of work, including a first machining stage for polishing the front side of work and a second machining stage for polishing the rear side of work, along with mechanisms for supplying, positioning, transferring, reversing and ejecting work. In the first and second machining stages, a work is chucked on each of index units which are mounted on an intermittently rotating index table and revolved around a polishing drum located at the center of the index table, pressing chamfered edge portions of the works against the polishing drum to give a polishing treatment thereto.
Claims14
An edge polisher, comprising in combination:
- a loader section for feeding works each having chamfered edge portions on the opposite sides thereof;
- a positioning mechanism for arraying said works in a predetermined stand-by position;
- first and second machining stages each having an index table adapted to rotate intermittently through a predetermined angle, a plural number of index units each having a motor-driven work chuck means and located at predetermined angular intervals about the center of rotation of said index table, and a polishing drum located at the center of rotation of said index table and rotationally driven from a motor, each one of said index units being revolved around said polishing drum by rotation of said index table, pressing a chamfered edge portion of a work on said chuck means against said polishing drum;
- a first transfer mechanism adapted to transfer said works in said predetermined stand-by position successively to said index units in said first machining stage;
- a reversing mechanism adapted to reverse the sides of said works upside down one after another upon finishing a polishing treatment on said chamfered edge portion in said first machining stage;
- a second transfer mechanism adapted to eject said works one after another upon finishing a polishing treatment on said chamfered edge portion in said second machining stage;
- and
- an unloader section for unloading polished works received from said second transfer mechanism.
Dependencies are inferred from the claim text.