本文在分析现行使用的切削液评价方法的基础上,提出了利用四个评价特征量(攻丝最大扭矩、已加工表面粗糙度、切入时扭矩增量及修光时扭矩增量)作切削液评价指标,以干切削的评价特征量作基准订出四个评价特征量的评价指数,按编码方式表示出切削液的切削性能。这个评价结果既方便用户选择切削液,也为切肘液研制者提供改善切削液切削性能的信息。 Based on the analysis of the existing evaluation methods of cutting fluid, this paper proposes the use of four evaluation features (tapping maximum torque, machined surface roughness, torque increment at cut-in and torque increment at repair) as cutting fluid Evaluation index, the evaluation index of dry cutting is used as a benchmark to set the evaluation index of four evaluation features, and the cutting performance of the cutting fluid is expressed by coding mode. The result of this evaluation is both convenient for the user to choose the cutting fluid and also for the cutting fluid developer to improve the cutting fluid cutting performance.