Polishing apparatus

Details Polishing apparatus Polishing apparatus

2006-04-04

2006-04-04

Nguyen, George (Department: 3723)

Abrading

Machine

Rotary tool

C451S259000, C451S270000, C451S271000, C451S290000, C451S291000

Reexamination Certificate

active

07022001

ABSTRACT:
The small polishing apparatus is capable of simultaneously polishing both side faces of a work piece, and a lower polishing plate, an internal gear and a sun gear are respectively driven by direct drive (DD) motors. The polishing apparatus comprises: an upper and a lower polishing plates; a sun gear and an internal gear; and a carrier provided between the polishing plates and engaged with the gears. Both side faces of the work piece held by the carrier are simultaneously polished by the polishing plates. DD motors respectively rotate the lower polishing plate and the gears. Each DD motor has a ring-shaped output member. A first DD motor has the output member directly connected to a rotary holding member rotatably holding the lower polishing plate. A second DD motor is provided under the first DD motor. One end of a rotary shaft, which is pierced through the first DD motor, is connected to a rotary holding member rotatably holding one of the gears, and the other end is directly connected to the output member of the second DD motor.

REFERENCES:
patent: 4433510 (1984-02-01), Katagiri et al.
patent: 4593495 (1986-06-01), Kawakami et al.
patent: 5697832 (1997-12-01), Greenlaw et al.
patent: 6030278 (2000-02-01), Honda
patent: 6113490 (2000-09-01), Hakomori
patent: 6250997 (2001-06-01), Hatano et al.
patent: 2000-127033 (2000-05-01), None

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