Title: Effect of tool wear on rolling contact fatigue performance of superfinish hard machined surfaces

Authors: Youngsik Choi, C. Richard Liu

Addresses: Department of Mechanical and Aerospace Engineering, Florida Institute of Technology, Melbourne, FL 32901, USA. ' School of Industrial Engineering, Purdue University, West Lafayette, IN 47904, USA

Abstract: This study investigates the effect of tool wear on the rolling contact fatigue performance of superfinish hard machined surfaces. The rolling contact fatigue test results indicate that the flank wear width can contribute to the prediction accuracy of fatigue life model for the CBN tool with a tool nose radius of 0.79 mm. If the relationship between tool wear and the residual stress distribution and the relationship between tool wear and the micro-hardness distribution are established, it is expected that tool wear can contribute to the prediction accuracy of fatigue life model for more general conditions.

Keywords: tool wear; hard machining; rolling contact; fatigue testing; cubic boron nitride; CBN tooling; residual stress; microhardness; superfinish; flank wear; fatigue life; modelling; prediction accuracy.

DOI: 10.1504/IJMMS.2009.027131

International Journal of Mechatronics and Manufacturing Systems, 2009 Vol.2 No.4, pp.480 - 489

Published online: 15 Jul 2009 *

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