Introduction :- The process of gear hobbing is one of generation. The word "generating" alludes to the fact that the gear tooth form cut is not the same as the hob, which is the conjugate form of the cutting tool. Both the hob and the workpiece rotate in a continuous rotating interaction during hobbing. The hob is normally fed axially during this rotation, with all of the teeth eventually created as the tool passes the work face. (Fig. 1a.) When cutting a spur gear with a single start hob, the workpiece advances one tooth for each cutter revolution. The hob will rotate twenty times whereas the workpiece will only rotate once when hobbing a twenty-tooth gear. The profile is created by cutting edges that are evenly distributed around the hob and take multiple cuts on the workpiece, each in a slightly different position for each cut (Fig. 1b). Several cutting edges of the tool will be cutting at the same time. Figure 1 a & b Figure References : https://www.geartechno...