In this paper, a mechanistic modeling approach to predicting cutting forces for conical twist drills with chip-breaking grooves has been developed. The model is based on force principles for restricted contact cutting extended to take into account the presence of a groove on the drill rake face. The applicability of the model for arbitrary groove geometries has been ensured by eliminating the use of grooved drills in the calibration process. Four different combinations of groove geometries have been used for validating the model using high speed steel drills and low carbon steel workpiece material. The force predictions from the model were found to be in good agreement with the measured forces. The model was then employed to determine groove orientation and design parameters that minimize cutting forces, subject to the condition that chip breaking is satisfactory.
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August 2004
Technical Papers
Modeling of Forces for Drills With Chip-Breaking Grooves
Sushanta K. Sahu, Graduate Research Assistant,
Sushanta K. Sahu, Graduate Research Assistant
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Richard E. DeVor, Professor,
Richard E. DeVor, Professor
Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Shiv G. Kapoor, Professor
Shiv G. Kapoor, Professor
Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Richard E. DeVor, Professor
Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Shiv G. Kapoor, Professor
Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received Jan. 2003; Revised Dec. 2003. Associate Editor: M. Davies.
J. Manuf. Sci. Eng. Aug 2004, 126(3): 555-564 (10 pages)
Published Online: September 7, 2004
Article history
Received:
January 1, 2003
Revised:
December 1, 2003
Online:
September 7, 2004
Citation
Sahu, S. K., DeVor, R. E., and Kapoor, S. G. (September 7, 2004). "Modeling of Forces for Drills With Chip-Breaking Grooves ." ASME. J. Manuf. Sci. Eng. August 2004; 126(3): 555–564. https://doi.org/10.1115/1.1763183
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