ABSTRACT
Most of the major elements of the geometry of gear cutting tools can be calculated as a solution to the direct problem of the theory of part surface generation. The geometry of the gear tooth flank is the first major component that is necessary for solving the direct problem of part surface generation. The kinematics of the gear machining process is the second major component which is also necessary for solving the problem under consideration. Every gear machining process features a certain kinematics of part surface machining. The chapter illustrates that relative motions of the work gear and of the gear cutting tool are critical elements in every gear machining process. Particular kinds of relative motions of work gear and the gear cutting tool are of critical importance for the gear cutting tool designer. The geometry of the work gear tooth flank is the only information available for gear cutting tool designer when one embarks on designing gear cutting tool.
