B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 21/14 (2006.01)
Patent
CA 2064452
? 46663 CAN 7A ABSTRACT The contact wheel according to the present invention is adapted to support an endless coated abrasive belt during abrading of a workpiece. The contact wheel comprises a hub having an axis and a generally cylindrical peripheral surface about the axis, a generally monolithic contact portion having cylindrical inner surface coaxial with the hub and which is mounted on the peripheral surface of the hub, and an outer cylindrical coaxial peripheral face surface having axial spaced edges. The contact portion has circumferentially spaced parallel elongate grooves having opposite ends. The grooves are recessed from the face surface with land parts of the peripheral face disposed between the grooves. The contact portion has at least one end of each of the grooves spaced from the adjacent edge of the face surface to provide a continuous support part of the peripheral face surface adjacent the adjacent edge of the face surface. The invention also includes a method of grinding a workpiece at a first relatively high cut rate and then at a second relatively lower cut rate.
Amundson Steven E.
Luedeke Arthur P.
Amundson Steven E.
Luedeke Arthur P.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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