Title:
ガラス基板のチャンファリング方法及び装置
Document Type and Number:
Japanese Patent JP4144725
Kind Code:
B2
Abstract:
A method for glass substrate chamfering using a metal-bonded outer-surface grindstone 12 for simultaneously processing the end surface and the oblique surfaces of the outer periphery of a doughnut-like glass substrate 1 with a circular hole 1a at the center thereof, and a metal-bonded inner-surface grindstone 14 for simultaneously processing the end surface and the oblique surfaces of the inner periphery are provided; the outer-surface grindstone and the inner-surface grindstone simultaneously grind end surfaces and oblique surfaces of the outer and inner peripheries of the glass substrate, and during grinding, the outer-surface grindstone is sharpened by dressing it electrolytically, and the inner-surface grindstone is sharpened by an electrolytic dressing when not processing as the glass substrate is being replaced. Thus, edge portions of the glass substrate for a hard disk can be processed accurately, efficiently, and with high quality, and the need for a subsequent process, such as buff-polishing, is reduced or even eliminated.
Inventors:
Sei Omori
Muneaki Asami
Akihiko Uzawa
Sadamasa Kamiya
Muneaki Asami
Akihiko Uzawa
Sadamasa Kamiya
Application Number:
JP27897699A
Publication Date:
September 03, 2008
Filing Date:
September 30, 1999
Export Citation:
Assignee:
RIKEN
New Generation Processing System Co., Ltd.
UTK System Co., Ltd.
SHIGIYA MACHINERY WORKS LTD.
New Generation Processing System Co., Ltd.
UTK System Co., Ltd.
SHIGIYA MACHINERY WORKS LTD.
International Classes:
B24B9/00; B24B9/06; B24B9/08; B24B53/00
Domestic Patent References:
| JP11033889A | ||||
| JP7132451A | ||||
| JP4115867A | ||||
| JP5305568A | ||||
| JP11198012A | ||||
| JP8057756A | ||||
| JP2145258A |
Attorney, Agent or Firm:
Minoru Hotta
Shigeru Nara
Shigeru Nara