Technics Study on Electrical Discharge Grinding Polycrystalline cubic Boron Nitride Cutting Tool Based on the Orthogonal Experiment
Today it is significantly greater and wider use of polycrystalline cubic boron nitride(PcBN)cutting tool,especially in the precision dry turning of the ferrous metal and cast iron because of its higher hardness,durable wear resistance and high temperature red hardness.Electrical discharge grinding(EDG)is the principal method of machining PcBN cutting tool.Multiple sets of polycrystalline cubic boron nitride compact samples BZN8200 processed in GE are chosen as the research object.Using orthogonal experimental analysis method,the cutting tool flank is machined by EDG machine.Combined with scanning electron microscope observation,energy spectrum analysis and roughness meter test.Select electrode speed,peak current,pulse duration as the main process parameters,material removal rate,electrode wear as machining efficiency evaluation index,surface roughness of cutting tool flank surface,affected layer thickness as evaluation index of processing quality,analysis of PcBN material machine technics in the process of electrical discharge grinding.Experimental results show that: when the electrode speed in 60 m/min,the peak current in 2 A,pulse duration is 20 μs,PcBN removal rate reach 1.1 mm3,electrode loss is about 3.2 mm3,PcBN cutting tool blade surface roughness reach Ra0.8μ m,affected layer thickness is about 12μ m,satisfactory results are obtained.This research provides valuable test reference for drawing up electrical discharge grinding technics of PcBN cutting tool.
Electrical discharge grinding (EDG) Polycrystalline cubic boron nitride (PcBN) cutting tool Orthogonal experiment Machining technics Affected layer
JIA Yunhai GUO Yan LI Jiangang
Beijing Institute of Electro-machining,Beijing,China;Beijing Key Laboratory of Electrical Discharge Beijing Institute of Electro-machining,Beijing,China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-6
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）