Serrated end mills are effectively used in suppressing chatter vibrations in roughing operations. Mechanics and dynamics of serrated cylindrical and tapered helical end mills are presented in the article. The serrated flute design knots are fitted to a cubic spline, which is then projected on helical flutes. Cutting edge geometry at any point along the serrated flute is represented by its immersion angle and tangent vectors in radial, tangential and helical directions. The chip thickness removed by each cutting edge point is determined by using exact kinematics of dynamic milling. The cutting forces are evaluated by orthogonal to oblique cutting mechanics transformation. The experimentally proven model is able to predict the cutting forces and chatter stability lobes in time domain. It is shown that the proposed model can be used in evaluating the performance of serrated end mills during their stage.
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Technical Papers
Mechanics and Dynamics of Serrated Cylindrical and Tapered End Mills
S. D. Merdol,
S. D. Merdol
Manufacturing Automation Laboratory, University of British Columbia, 2324 Main Mall, Vancouver, BC Canada, V6T 1Z4 http://www.mech.ubc.ca/∼mal
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Y. Altintas
e-mail: altintas@mech.ubc.ca
Y. Altintas
Manufacturing Automation Laboratory, University of British Columbia, 2324 Main Mall, Vancouver, BC Canada, V6T 1Z4 http://www.mech.ubc.ca/∼mal
Search for other works by this author on:
S. D. Merdol
Manufacturing Automation Laboratory, University of British Columbia, 2324 Main Mall, Vancouver, BC Canada, V6T 1Z4 http://www.mech.ubc.ca/∼mal
Y. Altintas
Manufacturing Automation Laboratory, University of British Columbia, 2324 Main Mall, Vancouver, BC Canada, V6T 1Z4 http://www.mech.ubc.ca/∼mal
e-mail: altintas@mech.ubc.ca
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received Aug. 2002; Revised Oct. 2003. Associate Editor: Y. Shin.
J. Manuf. Sci. Eng. May 2004, 126(2): 317-326 (10 pages)
Published Online: July 8, 2004
Article history
Received:
August 1, 2002
Revised:
October 1, 2003
Online:
July 8, 2004
Citation
Merdol , S. D., and Altintas, Y. (July 8, 2004). "Mechanics and Dynamics of Serrated Cylindrical and Tapered End Mills ." ASME. J. Manuf. Sci. Eng. May 2004; 126(2): 317–326. https://doi.org/10.1115/1.1644552
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