Edge-rounding method and apparatus therefor

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof

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Details

51 76R, 51326, 51328, B24B 900, B24B 100

Patent

active

040789055

ABSTRACT:
A method and an apparatus for rounding edges of workpieces by carrying the workpieces on a conveyor, rounding by a first pair of rotary buffs the edge portions of each workpiece being conveyed which are opposed to the resultant feed directions of the buffing faces of the buffs, the feeds of the buffing faces in sliding contact with the workpiece having a direction resultant of a velocity component pointing contrary to the running direction of the conveyor and a velocity component directed normal to the direction of the velocity component and toward one edge of the conveyor and also having a direction resultant of a velocity component pointing in the same direction as the running direction of the conveyor and a velocity component directed normal to the velocity component and toward the opposite edge of the conveyor, and then rounding by a second pair of rotary buffs the edge portions of the workpiece being conveyed which are opposed to the resultant feed directions of the buffing faces of the buffs, the feed directions of the buffing faces in sliding contact with the workpiece having a direction resultant of a velocity component pointing in the same direction as the running direction of the conveyor and a velocity component directed toward the one edge of the conveyor and also having a direction resultant of a velocity component pointing contrary to the running direction of the conveyor and a velocity component directed toward the opposite edge of the conveyor, whereby sharp corners and burrs on all edge portions of the workpiece can be rounded off.

REFERENCES:
patent: 639742 (1899-12-01), Koenig
patent: 2617223 (1952-11-01), McElroy
patent: 2715796 (1955-08-01), Beard
patent: 3372516 (1968-03-01), Dickinson
patent: 3895464 (1975-07-01), Kiser

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