INITIAL POSITION SETTING METHOD FOR GRINDING DEVICE

Title:

INITIAL POSITION SETTING METHOD FOR GRINDING DEVICE

Document Type and Number:

WIPO Patent Application WO/2002/057050

Kind Code:

A1

Abstract:

An initial position setting method for a grinding device that comprises a grinding stone (11), lens holding shafts (14, 14) capable of moving toward and away from each other along the normal direction of the grinding stone (11), a groove cutting grinding stone (23) and chamfering grinding stones (24, 25) that are movable to predetermined positions, motors (M2, P1, 55) for effecting rotation, toward-away movement, etc. of the lens holding shafts (14, 14), a driving mechanism (30) for moving the groove cutting grinding stone (23) and chamfering grinding stones (24, 25), a photosensor (57) for detecting that a work-subject lens held by the lens holding shaft (14, 14) comes into contact with the grinding stone (11), the method comprising the steps of holding a measuring prototype (70) of predetermined shape by the lens holding shafts (14, 14), moving the groove cutting grinding stone (23) and chamfering grinding stones (24, 25) to predetermined positions, moving the lens holding shafts (14, 14) until the measuring prototype (70) comes into contact with the groove cutting grinding stone (23) or chamfering grinding stones (24, 25), calculating the amount of movement of the lens holding shafts (14, 14) at this time, and effecting initial setting of the amount of movement of the groove cutting grinding stone or chamfering grinding stones on the basis of the calculated amount of movement and the size of the measuring prototype (70).

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WO/2002/051588	ARRANGEMENT FOR DETACHABLY SECURING A GRINDING WHEEL OR GROUP OF GRINDING WHEELS ON A WHEEL SPINDLE
JP2828204	SPECTACLE FRAME MEASURING DEVICE AND SPECTACLE LENS GRINDING DEVICE HAVING THIS SPECTACLE FRAME MEASURING DEVICE

Inventors:

ETO YASUHITO (JP)
WATANABE KENICHI (JP)
HATANO YOSHIYUKI (JP)

Application Number:

PCT/JP2002/000433

Publication Date:

July 25, 2002

Filing Date:

January 22, 2002

Export Citation:

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Assignee:

TOPCON CORP (JP)
ETO YASUHITO (JP)
WATANABE KENICHI (JP)
HATANO YOSHIYUKI (JP)

International Classes:

B24B9/14; B24B19/03; B24B47/22; B24B49/10; (IPC1-7): B24B9/14

Foreign References:

EP0960690A1	1999-12-01
JP2001277086A	2001-10-09
JP2001315045A	2001-11-13
JP2001150315A	2001-06-05
JP2001150314A	2001-06-05

Attorney, Agent or Firm:

Nishiwaki, Tamio (9-15 Ginza 7-chome Chuo-ku, Tokyo, JP)

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