Single station blade sharpening method and apparatus
AssigneeSpecialty Blades, Inc.
InventorChristopher A. White
Life of this patent
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Abstract
A blade sharpening method and apparatus is characterized by sharpening the blade in a single station grinding assembly. The grinding assembly includes two opposed abrading wheels which interlock to form a nip for sharpening the blade. The wheels each include a first coarse portion for roughing an edge of the blade, a second fine portion for finishing the hone facet, and a third coarse portion for forming other facets adjacent to the hone facet. The wheels are specially contoured and have parallel axes tilted relative to the direction of travel of the blade. The striations formed on the facets of the blade by the abrading wheels extend at the same angle in both facets.
Claims13
A method for forming a cutting edge on a blade, comprising the steps of
- (a) forming a first facet on each side of the blade, said facets intersecting at a sharpened edge of the blade with a first entry portion of an abrading assembly;
- (b) finishing said first facets of the blade with a second middle portion of an abrading assembly;
- and
- (c) forming at least one additional facet different from said first facet on opposing surfaces, respectively, of the blade adjacent to the first facets with a third portion of an abrading assembly, said first, second, and third portions of said abrading assembly being arranged in succession at a single station.
Apparatus for sharpening a multiple angled blade comprising
- (a) a single pair of opposed grinding assemblies mounted for rotation about parallel axes and defining a nip for receiving a blade, said grinding assemblies each including
- (1) a first portion at an entry end for removing a first portion of the blade to form a first facet on each side of the blade which intersect at a sharpened edge;
- (2) a second portion adjacent to said first portion for finishing said first facet at said sharpened edge of the blade;
- and
- (3) a third portion adjacent to said second portion at an exit end of said grinding assemblies for removing at least a second portion of said blade adjacent to said first facets to form at least a second facet on each side of the blade;
- and
- (b) means for supporting said grinding assemblies with their axes at an angle with respect to said sharpened edge of the blade, whereby striations formed in all facets during removal of said first and second portions of the blade extend at the same angle with respect to said sharpened edge.
Dependencies are inferred from the claim text.