Abstract
This paper deals with the cutting mechanism and performance of end mills with different helix angles on adjacent teeth. The results are as follows. (1) Cutting mechanism of end mills with different helix angles on adjacent teeth is analyzed geometrically. And also chip area are calculated and its characteristic are shown. (2) Evaluated value for cutting performance of cutter is defined by mean and standared deviation of expected cutting force curve, and the values by cutters are compared with one anothor. (3) Under the experimental conditions, cutting performance of cutters with combination of 35° to 45° helix angles are better than another cutters, and optimum combination of helix angle is 40°-40°. (4) It is shown that end mills with different helix angles, by only a few degrees, on adjacent teeth reduce the deviation of chip area greatly. So these cutters are able to expect to control chatter in end milling.
