在镗孔过程中,镗杆的刚度低是防碍提高钻孔切削用量的一个非常重要的环节,尤其车床上工作时,一般镗杆是处在悬梁的工作状态中。现在苏联一些工厂,采用“谢明斯基”镗刀进行镗孔,提高了切削用量,现介绍如下: 一、 “谢明斯基”镗刀的结构特点与制造工艺(见图1)。 这种镗刀刀杆是 During the boring process, the low rigidity of the boring bar is a very important link that hinders the improvement of the drilling cutting amount. In particular, when working on the lathe, the boring bar is usually in the working state of the cantilever. Now some factories in the Soviet Union, the use of “Xie Minsiji” boring boring tool to improve the amount of cutting, are described below: First, the “Xie Minsiji” boring knife structure and manufacturing process (see Figure 1). This boring cutter bar is