(19)
(11) EP 1 252 975 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.01.2004 Bulletin 2004/04

(43) Date of publication A2:
30.10.2002 Bulletin 2002/44

(21) Application number: 02252980.4

(22) Date of filing: 26.04.2002
(51) International Patent Classification (IPC)7: B24D 18/00, B24D 5/12, B28D 1/12
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 26.04.2001 JP 2001129313

(71) Applicant: Tsune Seiki Co., Ltd.
Nei-gun, Toyama (JP)

(72) Inventor:
  • Okina, Tomoji
    Toyama-shi, Toyama (JP)

(74) Representative: Greenwood, John David et al
Graham Watt & Co. St. Botolph's House 7-9 St. Botolph's Road
Sevenoaks Kent TN13 3AJ
Sevenoaks Kent TN13 3AJ (GB)

   


(54) Electro-deposited thin-blade grindstone


(57) To provide an electro-deposited thin-blade grindstone containing a plate-shaped base metal (12), depressed portions (14) that are open from near the edge portion (12a) of the base metal to the edge portion (12a) and are formed alternately on both side surfaces of the base metal, and a number of abrasive grains (16) fixedly deposited on the depressed portions (14) and protruded from the side surfaces and end portion of the base metal (12). The depressed portion (14) is formed in a depth of 1/2 or more of the thickness of the base metal (12). The abrasive grain is a hard abrasive grain (16) made of diamond, CBN or the like. The diameter of the abrasive grain (16) is nearly equal to the thickness of the base metal (12).






Search report