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자료유형
학술저널
저자정보
저널정보
한국기계기술학회 한국기계기술학회지 한국기계기술학회지 제16권 제1호
발행연도
2014.1
수록면
1,097 - 1,104 (8page)

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The development of machining technology has coincided with the recent development of a diverseamount of materials and tools. The developed materials largely consist of hardened steel for vehicle and themechanical industry. The machining of the hardened steel is performed in a lathe and many kind ofmachining centers, but it is difficult to machine because its hardness is the most difficult-to-cut materials. Hard-turning is a kind of machining process which omits the final grinding process and replaces it with asingle accurate cutting process. In this paper, the turning of SKD 11(HRC 58) was performed using the CBN tool in order to recognizethe optimum process conditions. The cutting force, tool life and wear, surface roughness were measured. Examining the machining characteristics when cutting of high hardened steel, low cutting speed and highconveying speed were identified to be effective in cutting conditions of SKD 11. Tool life was most effectivein the conditions with 65m/min of cutting speed and 0.193mm/rev of feedrate and approximately 0.5um ofvery good surface profile was acquired at 0.079mm/rev of feedrate. Therefore, when cutting with Low CBN tool, it could be considered to be sufficient in reducing thesteps of precision machining or replacing the polishing

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