前言螺旋推铰刀是一种孔的精加工刀具,它的切削过程既像推刀,又像铰刀,因此叫做推铰刀。目前我国机加工行业已有使用,如西南仪器厂、昆仑机械厂等已能稳定地用于生产,但使用还不够广泛。其主要原因是由于该刀制造较困难,并缺乏从设计到工艺理论上的研究。当设计与制造不当时,使得加工孔的质量不够 Preface Helical thrust reamer is a hole finishing tool, its cutting process is like a push knife, but also like a reamer, so called reamer. At present, China’s machining industry has been used, such as Southwest Instrument Factory, Kunlun Machinery Factory has been able to be used steadily for production, but its use is not yet widespread enough. The main reason is due to the knife manufacturing more difficult, and the lack of theory from design to process research. When the design and manufacture of improper, making the quality of processing holes is not enough