精密切削纯铁材料硬质合金刀具刃口磨损特征演化  

Evolution of Cutting Edge Wear Characteristics of Carbide Tools in Finish Turning Pure Iron Materials

作　　者：陈宇[1] 孔金星[1] 张振宇[2] CHEN Yu;KONG Jinxing;ZHANG Zhenyu(Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang Sichuan 621999,China;Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621999 [2]大连理工大学精密与特种加工教育部重点实验室,辽宁大连116024

出　　处：《机床与液压》2022年第13期65-69,共5页Machine Tool & Hydraulics

基　　金：国防基础预研核科学挑战计划(JCKY2016212A506-0107);中国工程物理研究院发展基金项目(2015B0203029)。

摘　　要：为研究纯铁材料精密切削时刀具刃口磨损特征演化规律,以涂层硬质合金刀具为研究对象进行纯铁材料精密切削试验。结果表明:涂层硬质合金刀具精密切削纯铁材料的磨损特征有后刀面均匀磨损带、主沟槽磨损、副沟槽磨损、刀尖磨损;主、副沟槽磨损长度都随着切削时间增加而增大且大于后刀面磨损量,沟槽磨损深度与沟槽磨损长度大致呈线性正相关;刀尖退化与后刀面磨损变化规律相互对应,切削初期磨损率大,随后磨损缓慢。In order to study the evolution law of cutting edge wear characteristics of pure iron materials during precision cutting,a precision cutting experiment of pure iron materials was carried out with coated carbide tools as the research object.The results show that the wear characteristics include uniform flank wear land,major notch wear,minor notch wear and tool tip wear in finish cutting pure iron materials with coated carbide tools;the wear length of the major and minor notch wear increases with the increase of cutting time and is greater than the flank wear,the notch wear length has a significant positive relationship with the notch wear depth basically;the cutting edge degradation and the flank wear law correspond to each other,the initial wear rate is large,and the subsequent wear is slow.

关 键 词：精密切削 沟槽磨损 切削刃口退化 

分 类 号：TH162[机械工程—机械制造及自动化]