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《Tribology》 2002-06
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Wear Characteristics of Cutting Tools in High Speed Machining

LIU Zhanqiang, AI Xing(School of Mechanical Engineering, Shandong University, Jinan 250061, China)  
The wear characteristics of PCBN tool, ceramic tool, coated carbide tool,and ultra fine grain carbide tool in high speed face milling of cast iron, AISI1045 tempered carbon steel, and AISI1045 hardened carbon steel were examined with a toolmaking microscope. The results showed that the cutting tools had different wear modes with varying material pairs of the cutting tool and workpiece. The dominant wear patterns of the cutting tools included rake face wear, flank wear, microchipping, fracture, and breakage. The rake face wear of the cutting tools in high speed machining was different from that in conventional speed machining. Namely, the rake face was not characterized by crater wear but by slopeplanewear with the maximum wear at the cutting edge, while the worn area of the rake face decreased with increasing cutting speed and the wear depth increased correspondingly. The results might be helpful to guiding the design and selection of tool materials and control of tool wear in highspeed machining processes. 
【Fund】: 国家自然科学基金资助项目(50105012);; 教育部留学回国人员科研基金资助项目(中博基2000-23).
【CateGory Index】: TG71
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