Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1992-08-05
1993-09-07
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 81BS, 51111R, 51218R, 51219R, B24B 700
Patent
active
052417913
ABSTRACT:
Edge tool sharpening apparatus for the sharpening of an edge tool having a shank (e.g. a wood drill bit), the apparatus including an axially rotatable abrasive element having a peripheral abrasive surface; and a support device having support surfaces to support the shank of the tool such that its face to be sharpened engages the abrasive surface with the shank axis at an acute angle to the diametral plane of the rotatable abrasive element through the engagement location, the support device providing for automatic compensation for different shank diameters of different drill bits, when supported by the support surfaces, by automatically effecting an increase in the inclination of the diametral plane with increase in the diameter of the shank and such that the acute angle is substantially constant for a range of drill bit shank sizes. Advantageously, for sharpening a wood drill bit, the support device is positioned such that a wood drill bit supported thereby can engage the abrasive element with a main clearance face of the wood drill bit in sharpening engagement of the element's peripheral surface, the diametral plane of the abrasive element through the engagement location being inclined to the drill bit's shank axis at substantially the clearance angle of the clearance face, and simultaneously also with a preliminary indenting face of the central nib of the wood drill bit in sharpening engagement of the element's lateral surface.
REFERENCES:
patent: 1873612 (1932-08-01), Martell
patent: 2080515 (1934-02-01), Tautz
patent: 2133414 (1937-01-01), Bahuaud
patent: 2207804 (1938-10-01), Hoagland
patent: 3081585 (1961-05-01), Boggis
patent: 3102370 (1963-09-01), Ribich
patent: 3169353 (1965-02-01), Krulwich
patent: 4471581 (1984-09-01), Bernard et al.
patent: 4744178 (1988-05-01), Afshar
Gardner Alfred Brian
Rachuba M.
LandOfFree
Edge tool sharpening apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Edge tool sharpening apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Edge tool sharpening apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-480297