我厂生产的 Z3040×16(Ⅰ)摇钻外柱系铸铁件,如图1所示。外柱上端的冒口部分在外圆粗加工后在 CW61100B 车床上切除掉。过去采用焊接式硬质合金切断刀。由于工件切断部分较厚,刀体悬伸过长,刚性较差,易产生振动,加之内孔铸造偏心,使其加工裕量不均,产生冲击,致使刀刃经常崩损。在无法重新刃磨后就连同刀体一起报废,这样不仅加工效率低,而且造成刀体钢材的浪费。为此,我们设计了机夹可转位反切断刀, I plant the Z3040 × 16 (Ⅰ) rocking outside the cast iron column, shown in Figure 1. The upper part of the riser part of the outer rough rough cut in the CW61100B lathe. In the past, a carbide cutting knife was used. As the workpiece cut off part of the thick body overhang too long, poor rigidity, easy to produce vibration, combined with the inner hole casting eccentricity, processing margins uneven, resulting in the impact, resulting in the blade often collapse. After the grinding can not be resharpened together with the body scrapped, so that not only low processing efficiency, but also caused the waste of steel body. To this end, we have designed a folder can be indexable cutting knife,