介绍了涂层刀具与未涂层刀具在切削加工中的性能比较及试验研究。主要通过不重磨车刀的耐用度及丝锥的切削力（扭矩）等因素来展开试验分析。
Performance of the coated tool and non-coated tool in cutting process is analyzed through measuring durability of the indexable insert turning tool and cutting force (torsional moment) of tap.
我们首先分析两种材料的加工特性，又从丝锥材料、切削速度、 切削液三方面说明了对不锈钢和钛合金材料攻丝加工时的影响和选取方法。
Stock removing velocity and cutting fluid on the tapping for the materials have been studied in the paper, and thus reasonable tapping conditions for practical working could be selected.
通过对攻丝切削力和丝锥排屑特点的分析，确定径向力、轴向力和排屑不畅是影响攻丝质量的主要因素。
Based on the analysis of tapping force system and characteristic of chip removal, it is confirmed that radial force, axial force and jam of chip removal are the main reasons for poor thread quality.
应用推荐