用单刃刀具镗孔,车外圆或端面加工时,如果不让刀退力,刀尖便会刮伤已加工表面。在精镗工序尤为突出,所以是必须解决的生产问题。通过改革刀具结构来解决刮伤问题是一条简单易行的有效途径。本文在分析无刮伤精镗刀的基本原理和让刀机构原理的基础上,制作了轴向摆动让刀的无刮伤精镗刀,并进行了试验研究。 With a single-edged tool boring, car outer circumference or face machining, if you do not let the knife back force, the tip will scratch the machined surface. In the fine boring process is particularly prominent, it is necessary to solve the production problems. Solving the problem of scratching by reforming the tool structure is an easy and effective way. Based on the analysis of the basic principle of the non-scratch fine boring tool and the principle of the knife-making mechanism, a non-scratched fine boring tool with the axial swinging tool is manufactured and the experimental research is carried out.