VITRIFIED GRINDSTONE

WIPO Patent Application WO/2010/013580

A1

Provided is a vitrified grindstone which, when used in grinding a work, causes no grinding burn to that part of the work where a grinding fluid is less apt to come into the space between the work and the grindstone, and which does not cause the ground surface to have reduced surface quality. A vitrified superabrasive grinding wheel (10) is provided which includes vitrified grindstone pieces (26) each having microcapsules (38) containing, enclosed therein, a lubricant (42) for lubricating grinding points, i.e., cutting edges, of abrasive grains (34), the microcapsules (38) having been bonded to the inside of communicating voids (36) so that the voids (36) have been partly filled therewith.  Due to the constitution, the communicating voids have the intact functions inherent therein, such as the function of supplying an abrasive fluid and the chip pocket function which removes grinding dust from the grinding points.  Consequently, a high grinding ratio and high grinding efficiency can be attained.  In addition, the microcapsules (38) exposed in the grinding surface (20) are broken to release the grinding fluid (42) enclosed therein.  Therefore, that part of a work (H) to which a grinding fluid is less apt to be supplied is satisfactorily prevented from suffering a grinding burn.

JPH0224061	POLISHING MOLDED BODY AND MANUFACTURE THEREOF
JP2509736	[Name of device] Grinding wheel
JP2004082323	GRINDING TOOL AND MANUFACTURING METHOD THEREFOR

NAGATA AKIRA (JP)

PCT/JP2009/062156

February 04, 2010

July 02, 2009

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NORITAKE CO LTD (JP)
NORITAKE SUPER ABRASIVE CO LTD (JP)
NAGATA AKIRA (JP)

B24D3/02; B24D3/18; B24D5/10; B24D7/10

JP2000079566A	2000-03-21
JP2000226568A	2000-08-15
JP2001205566A	2001-07-31

IKEDA, HARUYUKI (JP)
Haruyuki Ikeda (JP)

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