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Machinability Evaluation of CBN Ball End Milling in Die & Mold Steels with High Hardness  

Kim, Hong-Gyoo (부산대학교 대학원 지능기계공학과)
Sim, Jae-Hyung (부산대학교 대학원 지능기계공학과)
Lee, Jong-Chan (금오공과대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.4, 2007 , pp. 119-126 More about this Journal
Abstract
Generally, the machinability of materials that have a good mechanical properties is poor. The material having a high strength, high toughness in high temperature and wear resistance, it is difficult to remove a chip from workpiece. STD11 and NAK80 are kinds of these materials and these materials can be used in many industrial fields. But it is limited in use because of high cost and poor machinability. In this experimental study, the cutting of STD11 and NAK80 were used to decide the machinability and the tool shape of CBN ball end mill. From the results, the CBN ball end mill is verified that the estimated cutting edge shape of rake angle 30 degree has consistent effect on the tool wear and cutting force.
Keywords
CBN(Cubic Boron Nitride); Ball end mill; Die & Mold materials; Rake angle; Machinability evaluation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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