Importance

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Abstract

An outer surface of a cam on a camshaft extending along a camshaft axis is honed by continuously rotating the camshaft about its axis, holding a grinding stone adjacent the cam with a surface of the stone directed radially inward at the cam surface, urging the grinding stone radially of the axis against the stone and thereby pressing the cam surface radially inward against the cam surface for contact of the stone surface along a line with the cam surface, and continuously displacing the stone surface in a direction generally tangential of the camshaft axis and thereby continuously moving the contact line between the cam and stone surfaces. Thus the contact line between the stone and the cam will move continuously, so that wear will not be concentrated in one location and the stone will not wear to fit in surface contact on the cam. The cam surface includes a part-cylindrical base region coaxial with the camshaft and a lobe region projecting radially outward from and joined to the base region. The stone surface is continuously displaced while engaging both of the regions.

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First Claim