一、镗刀的结构形式 我厂产品加工中,有一需要在终加工时进行浮动镗削的台阶孔。在浮动镗削前留有的加工余量,以往是在镗床上通过单刀试切法来控制的,因而效率低,余量变化大,不适应生产发展的需要。为此,我们曾考虑设计一种复合镗刀,但在确定方案时,考虑到该 First, the structure of the boring tool I plant processing, there is a need to float in the final processing step boring holes. The remaining machining allowance before floating boring, which was controlled by a single knife test and cutting method on a boring machine in the past, has low efficiency and great margin variation, which is not suitable for the needs of production and development. To this end, we have considered the design of a compound boring tool, but in determining the program, taking into account that