冷却润滑对金属玻璃钻削特征及可加工性的影响研究  

Research on Influence of Cooling and Lubrication on Drilling Characteristics and Machinability of Metal Glass

作　　者：胡小月 丁峰 胡治宇 王成勇[1] 张涛 朱旭光 Hu Xiaoyue;Ding Feng;Hu Zhiyu;Wang Chengyong;Zhang Tao;Zhu Xuguang(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;不详)

机构地区：[1]广东工业大学机电工程学院,广东工业大学高性能工具全国重点实验室,广东工业大学广东省微创手术器械设计与精密制造重点实验室

出　　处：《工具技术》2024年第6期41-49,共9页Tool Engineering

基　　金：国家自然科学基金重点项目(51735003);国家自然科学基金青年科学基金(52205456)。

摘　　要：金属玻璃钻削高温极易导致光发射、大毛刺和孔烧蚀等严重问题。研究锆基金属玻璃在干切削、冰冻切削和切削油条件下的钻削过程、钻削特征及孔质量,通过对比三种冷却润滑条件下的轴向力动态变化过程、钻削能、刀具磨损以及孔口毛刺,提出适用于金属玻璃钻削加工的工艺方法。研究结果表明:刀具磨损积累与热软化是影响金属玻璃钻孔过程及轴向力动态变化的主要因素;干切削会使孔材料处于过冷液态,导致孔无法成形。金属玻璃入口孔毛刺主要为冠状和无规则扭曲形毛刺;出口孔毛刺主要为冠状毛刺。冰冻切削仅适用于低速钻削金属玻璃;切削油条件下高速钻削金属玻璃可获得最佳孔口质量和最长刀具寿命。The high temperature during bulk metallic glass(BMG)drilling can easily lead to serious problems such as light emission,large burrs,and hole erosion.This paper studies the drilling process,characteristics and hole quality of zirconium-based BMG under dry cutting,freezing cutting,and cutting fluid condition.By comparing the dynamic change process of thrust force,drilling energy,tool wear and hole burr under three cooling and lubrication conditions,a process method suitable is put forward for BMG drilling.The results indicate that the accumulation of tool wear and thermal softening are the main factors affecting the drilling process of BMG and the dynamic changes of thrust force,dry cutting can cause the hole material to be in a supercooled liquid state and the hole cannot be formed.The burrs of the metal glass entrance hole are mainly coronal and irregular twisted burr,while the exit hole are coronal burrs.Frozen cutting is only suitable for low-speed drilling of BMG,the best hole quality and the minimal tool wear can be obtained by high-speed drilling with cutting fluid.

关 键 词：金属玻璃 钻削加工 冷却润滑 

分 类 号：TG52[金属学及工艺—金属切削加工及机床] TH161.14[机械工程—机械制造及自动化]