Title:
SPHERICAL FACE MACHINING DEVICE AND ITS METHOD
Document Type and Number:
Japanese Patent JP3094919
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To roughly machine and finely finish a workpiece in one process by providing a load pressing means for pressing the face to be machined of a workpiece against the polishing face of a polishing table through the polishing table and changing the pressing force of the load pressing means.
SOLUTION: A polishing tape 6, on the surface of which abrasive grains are adhered and which is stretched between reels 4 and 5 is provided on the recessed and spherical polished face 2a formed in the upper face of a polishing table 2. The workpiece 9 chucked by a chucking member 8 is pressed against the polishing face 2a through the polishing tape 6 by a load pressing means 10. The workpiece 9 is rotated by a motor 11 and is also reciprocated in the direction of an arrow C (the longitudinal direction of the polishing face 2a), and the polishing tape 6 runs in the direction of an arrow B. The pressing force of the workpiece 9 against the polishing face 2a is increased in pre-finish polishing and the pressing force is decreased in finish polishing.
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Inventors:
Kenichi Ohno
Torahiko Kanda
Mitsuhashi Masashige
Torahiko Kanda
Mitsuhashi Masashige
Application Number:
JP26850296A
Publication Date:
October 03, 2000
Filing Date:
October 09, 1996
Export Citation:
Assignee:
NEC
International Classes:
G02B6/38; B24B19/00; B24D3/00; B24D11/00; (IPC1-7): B24B19/00; G02B6/38
Domestic Patent References:
| JP63221958A | ||||
| JP56139872A | ||||
| JP59109452U | ||||
| JP646830U |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)