Abrading – Machine – Rotary reciprocating tool
Patent
1997-01-13
1999-03-09
Rose, Robert A.
Abrading
Machine
Rotary reciprocating tool
451403, B24B 342
Patent
active
058792244
ABSTRACT:
A reel assembly grinder with automatic indexing and grinding control including a conventional reel assembly with a cylindrical configuration. The reel assembly has a central axial shaft with a plurality of twisted blades situated therearound in a generally parallel orientation with respect to the shaft. Further provided is a grinding wheel. A reel drive mechanism is adapted to be coupled to the shaft of the reel assembly so that the blades of the reel assembly rotate while abutting the grinding wheel to effect spin grinding. The reel drive mechanism is further adapted to abut a single blade against the grinding wheel with a constant torque to effect relief grinding. Finally, a guide assembly is situated adjacent the grinding wheel. The guide assembly has two adjustable reel blade stops situated on either side of the grinding wheel. The guide assembly also includes at least one indexing blade guide pivotally coupled at a first end thereof adjacent an axis of rotation of the grinding wheel and further extended upwardly and rearwardly. Also included are front and rear adjusters for selectively adjusting the degree to which the indexing reel blade guide may pivot. In use, during relief grinding, the reel drive mechanism is adapted to abut a single blade against the grinding wheel with a constant torque and the grinding wheel is adapted to translate along a length of the blade of the assembly until the present reel blade abuts the reel blade stops thereby precluding further grinding. The grinding wheel may be translated past the reel assembly whereat the indexing reel blade guide is adapted to catch a next blade for grinding.
REFERENCES:
patent: 2281055 (1942-04-01), Smith
patent: 2377126 (1945-05-01), Brown
patent: 4148158 (1979-04-01), Hewitt
patent: 5549508 (1996-08-01), Searle et al.
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