Hob cutter for machining face gears, and method for manufacturing such a tool

A method for manufacturing a hob cutter for machining face gears, said hob cutter comprising a disk like cutter body having an axis of rotation and a plurality of hob teeth groups, said hob teeth groups having a front and a back, said hob teeth groups being distributed uniformly over the circumference of said cutter body and having at the front a cutting face, said method comprising the step of providing the teeth of the hob teeth groups with clearance faces, each said clearance face intersecting a cutting face of a said hob teeth group thereby forming a cutting edge, wherein said clearance face is machined with a machining tool along a line lying in a first flat plane, said first flat plane containing a second line which intersects or crosses said axis of rotation of said cutter body perpendicularly and intersects said cutting edge, said first flat plane making a lead angle (.gamma.) with a second plane perpendicular to said axis of rotation, and wherein during machining of a said hob teeth group the machining tool is moved in a preprogrammed manner.