减少刀具和切屑的接触长度能够提高刀具耐用度,这是人们都熟悉的,但很少人知道控制后刀面的宽度也有类似的效果。图示(刀具法剖面)就是这种变革的一个实例。图中左边的为普通廓形,做有负前角γn和后角α n;右边的为革新刀具.沿后刀面过切,并留有一个凸出部分。若 It is well known to reduce the tool-to-chip contact length to increase the tool life, but few know that controlling the width of the flank has a similar effect. The illustration (Cutter Profile) is an example of this change. The left side of the figure is a normal profile, with a negative anterior angle γn and a posterior angle α n; on the right is an innovative tool that is overcut along the flank and leaves a bulge. If