The New Method in Scraping the Back Off Surface of Side Edge of the Carbide Hob
The paper determines the shape of grinding wheel by the contact condition, not by the cutting edges, and introduced the NC grinding. After regrinding the cutting edge has at least 2 points coincided with the theoretical edge, even after regrinding for many times. So that increased the length of regrinding of the hob.
H. R. Liu "The New Method in Scraping the Back Off Surface of Side Edge of the Carbide Hob", Materials Science Forum, Vol. 694, pp. 754-759, 2011