Abstract: The generating method is accomplished at a machine containing one or two tools, constructed to possess a disk, cone or double-cone configuration, which are moved to-and-fro in a stroke-like fashion along the tooth flanks and can be advanced in the direction of the tooth flanks and act at one or two work locations upon a respective tooth flank. The displacement of the tool or each tool needed for producing the profile and longitudinal corrections is determined for each work location at the field of action or engagement zone of the teeth and is controlled as a function of the generating position and the stroke position of the machine tools according to predetermined functions.

Abstract: For grinding the flanks of gear teeth to modify an involute tooth profile determined by the generating method of grinding, the tooth flank area is associated with a system of co-ordinates and a grinding programme is employed that specifies involute modifying grinding feed in terms of the co-ordinates. By comparison of actual and programmed feed positions at instantaneous points in the co-ordinate system, feed corrections are applied at those points to obtain the programmed profile. By interpolation between successive comparison points, incremental feed corrections are obtained to give a smoother change of profile.