The Different Types of Milling Machines and Cutters 3D
#0183;#32;The hob is the cutting tool for a hobbing machine, a special type of milling machine that creates gears, sprockets, and splines. A hobbing machine is quite unique in that it has two spindles one for the hob and one for the cylindrical workpiece. The two spindles are offset from each at angles that depend on the part being created.