钝化参数对刀具刃口钝圆半径影响的研究  

Research on the Influence of the Edge Preparation Parameters on the Edge Radius

作　　者：赵雪峰[1] 杜宇超 吴志鹏 ZHAO Xue-feng;DU Yu-chao;WU Zhi-peng(Guizhou University,Mechanical Engineering College,Guizhou Guiyang550025,China)

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《机械设计与制造》2020年第3期131-133,137,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金刀具非对称刃口钝化机制与对切削性能影响的研究(51665007)。

摘　　要：刀具刃口钝化通过消除刃口上的微观缺口,改变切削刃的微观形貌,实现增加刀具的寿命,提升刀具的切削性能,使已加工零件获得更好地表面质量的目的。基于立式旋转钝化特点,获得了刀具刃口的运行轨迹。对硬质合金刀具采取立式旋转钝化的方式进行钝化,通过刀具钝化实验,并通过扫描电子显微镜对钝化后的刀具刃口钝圆半径进行测量,研究刀具转速和钝化时间对刀具刃口钝圆半径的影响规律,为优化刀具钝化工艺参数和提高刀具刃口钝化效率提供依据。Tool edge preparation prolongs the service life of tool and elevates the processing surface quality and cutting performance through modifying the cutting edge contour and microstructure,Based on the characteristics of the drag finishing,the motion path is built. The cemented carbide milling cutting edge is prepared in the drag finishing and measured by the Scanning Electron Microscope(SEM).The influence law of the spindle rotation rate and the edge preparation time on the edge radius is analyzed in the paper,which lays the foundation for the edge preparation optimization and realizing the highspeed and high efficiency machining.

关 键 词：刀具钝化 钝化速度 钝化时间 钝圆半径 

分 类 号：TH16[机械工程—机械制造及自动化] TG714[金属学及工艺—刀具与模具]