金刚石与磨料磨具工程Issue(1)：48-53,6.DOI:10.13394/j.cnki.jgszz.2015.1.0011
聚晶立方氮化硼刀具电火花放电磨削分析
Research on electrical discharge grinding of PCBN cutting tool
摘要
Abstract
Polycrystalline cubic boron nitride (PCBN) compact samples with different grain size are processed.Electrode running speed,open-circuit voltage,peak current,pulse width and pulse interval were selected as the main process parameters.The material removal volume and electrode loss were set as the evaluation index of production efficiency;workpiece surface roughness value was set as evaluation standard of processing quality.By electrical discharge grinding experiments,combined with scanning electron microscopy observation,energy spectrum analyzer and roughness tester,the influences of main process parameters on electrical discharge grinding were analyzed.So were polycrystalline cubic boron nitride compact electrical discharge grinding technics & mechanism.The research indicated that PCBN machining in EDG process was to melt bond at high temperatures,which resulted in PCBN particles falling off and realized material removal.This process was accompanied by element replacement and oxidation.PCBN particle size has less effect on efficiency and quality of electrical discharge grinding than electrical discharge process parameters.With the increase of the electrode rotation speed or open-circuit voltage,material removal volume of the workpiece and electrode loss both increased.With the increase of the peak current, material removal volume and surface roughness value of workpiece increased,but electrode loss decreased.关键词
聚晶立方氮化硼刀具/电火花放电磨削/放电加工参数/材料去除量/工件表面粗糙度Key words
polycrystalline cubic boron nitride cutting tool/electrical discharge grinding/electrical discharge machining parameter/material removal volume/workpiece surface roughness分类
矿业与冶金引用本文复制引用
贾云海..聚晶立方氮化硼刀具电火花放电磨削分析[J].金刚石与磨料磨具工程,2015,(1):48-53,6.基金项目
北京市自然科学基金资助项目(3133036) （3133036）
