超密齿面铣刀的铣削力波动特性及其影响

Considering the low machining efficiency of traditional milling cutters, an ultra-fine-pitched milling cutter was developed, the cutting force models in the x and y directions were established, and cutting force and its fluctuation were discussed by using the model. The results showed that during the cutter rotation, the cutting force fluctuation along the feed direction increases at first and then decrease with the increase of entrance angle, and then repeats when it decreases to the minimum. For the cutting force fluctuation vertical to the feed direction, it increases at first then decreases with the increase of entrance angle. The results showed that ultra-fine-pitched milling cutter is far superior to coarse-pitched one. Furthermore, cutting force per material removal rate was put forward to evaluate the performance of two kinds of cutters. Experiments by using the ultra-fine-pitched milling cutter validate the cutting force model and indicate that force fluctuation has a great effect on the surface roughness of workpiece, which confirms the advantage of ultra-fine-pitched milling cutter.