在零件加工中,经常要在已加工孔背面锪孔或刮平面,一般是将刀杆伸入孔中,在背面装上切削刃进行加工;或将工件反向装夹;或调换刀具加工方向,这些方法都有缺点。本文所介绍的这种刀具(图1)针对上述问题,提出了新的刀具结构,其特点是;刀具可直接伸入已加工好的孔中,从背面进行锪孔或刮平面,既无需反向 In the parts processing, often have holes in the machined holes on the back surface or scraping plane, the general is to reach into the hole in the knife, the cutting edge mounted on the back of processing; Or reverse the workpiece clamping; Or exchange tool processing direction These methods have drawbacks. In view of the above problems, the tool introduced in this paper (Figure 1) proposes a new tool structure, which features: the tool can be directly extended into the hole has been processed from the back of the hole or scraping the surface of the hole, to