五、拉刀刃齿的断屑沟 拉刀刃齿部分常制有断屑沟断。屑沟的目的,是用来将宽大的铁屑切削成狭小的铁屑,并使拉削比较容易及使铁屑在刃沟内的分布比较均匀,容易排除。尤其圆拉刀的断屑沟更加显得有效。 有断屑沟的刃齿,拉削后的工件不很光滑,又因修准刃齿没有拉削作用,所以可适 Fifth, the broaching edge of the Broken Broken Broach edge part of the teeth are often broken chip breaking groove. The purpose of the crumb ditch is to cut the large iron filings into small iron filings and to make broaching easier and to distribute the iron filings more uniformly within the cutting edges of the ditch and easily eliminated. In particular, the circular broach breaking groove more effective. Broken edge grooved teeth, after broaching the workpiece is not very smooth, but also because of the correction of the blade teeth broaching effect, it is appropriate