a method and an apparatus are proposed for grinding cams having concave flanks on a camshaft , using a grinding wheel of relatively small diameter , which is used at least for finish - grinding . the axis of the grinding wheel runs at an angle to the camshaft longitudinal axis , and the grinding wheel is aligned at the same angle . in order to achieve a satisfactory running surface , the grinding wheel is tracked along an advance axis running perpendicular to the infeed axis , specifically as a function of the rotational position of the camshaft and of the positioning on the infeed axis .