我厂在孔加工过程中,时常遇到 L/D>5的深孔。这种孔的加工条件比较不利,切屑易阻塞在孔内而把工件表面拉毛,也容易挤坏铰刀的刀齿;其次,由于切屑不易排出,冷却液流不到刀头,就会出现刀齿因散热差而产生卷口、啃毛的现象。因此,很易折断铰刀。我厂过去采用标准铰刀加工,工人操作困难,很难 I plant in the hole processing, often encounter L / D> 5 deep hole. This hole processing conditions are more unfavorable, the chip easily clogged in the hole and the surface of the workpiece bristles, but also easy to squeeze the reamer blade; Second, because the chip is not easy to discharge, the coolant flow to less than the blade, there will be knife Teeth due to poor heat generated roll mouth, eating the phenomenon of hair. Therefore, it is easy to break the reamer. I used the factory reamer standard reamer, the workers operating difficulties, it is difficult