期刊
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
卷 45, 期 4-5, 页码 421-431出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijmachtools.2004.09.010
关键词
drilling; drill grinding; thrust and torque; shape optimization
This paper investigates the optimization of twist drill point geometries in order to minimize thrust and torque in drilling. A point geometry parameterization based on the drill grinding parameters is used to ensure manufacturability of the optimized geometry. Three commonly used drill point geometries, namely, conical, Racon(R) and helical, are optimized for drilling forces while maintaining the inherent characteristics of each of the profiles. A significant reduction is shown in the drilling forces for the optimized drills. Drills with the optimized conical point profile are produced and tests run to validate the reduction in thrust and torque. (C) 2004 Elsevier Ltd. All rights reserved.
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