目前,内孔划离刀的种类、结构较多,但都较复杂。例如,本刊1964年6期刊登的“加工内孔环槽刀杆”一文,个人读后感到有以下几点意见可供商榷:(1)刀杆结构较复杂,调整麻烦。(2)刀杆伸出部分过长,刚性较差,不能采取较大的进刀量,所以生产效率仍较低(当然比没有这种工具 At present, there are many types and structures of inner-rowed knife, but they are all complicated. For example, published in 664 issue of 664 “” processing hole hole grooving knife "article, after reading the personal feel the following points for discussion: (1) Arbor structure is more complex, adjust the trouble. (2) Arbor extension is too long, poor rigidity, can not take a larger amount of feed, so the production efficiency is still low (of course, than without such tools