Forming of the flanks of hobs cutting edges using a disk-type grinding wheel

The element determining the accuracy of machining a gear wheel is the cuttiug edge of the hob. A cutting edge is a result of the intersection of the surface of attack by the hob cutting edge flank. The flanks of hobs can be formed by using grinding wheels, disk-type grinding wheels and finger-type grinding wheels. For small module hobs this is the disk-type grinding wheel of a rectilinear axial profile. However to increase the accuracy of the cutting edge we propose application of the disk-type grinding wheel of a circular axial profile, which makes it possible to receive the hobs of the AAA class accuracy. The proposed changes have been verified trough the computer program "Analysis of hob profiles" developed by the authors of this study and in the series of experimental tools.