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Toroidal versus ball nose and flat bottom end mills

  • S. Bedi
  • F. Ismail
  • M. J. Mahjoob
  • Y. Chen
Article

Abstract

This paper compares the surface roughness along and across the feed directions produced by toroidal, ball nose, and flat bottom end mills. The study is conducted numerically and by cutting tests of aluminium. The results show that the toroidal cutter inherits the merits of the other two cutters; it produces small scallops across the feed direction, and low roughness along the feed direction.

Keywords

5-axis machining Ball end mills Feed mark Flat end mills Scallop height estimation Toroidal end mill 

Nomenclature

h

scallop height

Rs

radius of curvature of surface

φ

inclination angle

2ac

cross-feed

subtended angle between the point of contact on the tool profile and the surface

Ra

surface roughness

e

offset distance of insert from tool axes for toroidal cutter

rc

cutter radius

ri

radius of insert for toroidal cutter

ft

feed per tooth

hu

undercut height

y, β, γ

intermediate variables

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References

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Copyright information

© Springer-Verlag London Limited 1997

Authors and Affiliations

  • S. Bedi
    • 1
  • F. Ismail
    • 1
  • M. J. Mahjoob
    • 1
  • Y. Chen
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of WaterlooWaterlooCanada

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