Based on the spiral bevel gear finish milling theories conducted by the numerical control(NC) face milling method

the expressions of motions for the NC axes were deduced

the influencing patterns of cutting speed

rate of movement of linkage axes

and degree of single step interpolation on the average scallop heights were studied

and their coupling relations were setup. Accordingly

the cutting experiment was conducted to verify the above results. The proposed study indicates that increasing the cutting speed and the rate of movement of the linkage axes has limited effect on average scallop height

while decreasing the degree of single step interpolation is able to reduce the average scallop height dramatically

which agrees with the theoretical analysis.