Header menu link for other important links
X
Experimental and theoretical investigation on cutting forces in off-centre micro ball end milling
Published in Elsevier Ltd
2018
Volume: 23
   
Pages: 108 - 117
Abstract
Free-form surfaces and micro features are finish machined by a micro ball end mill by removing steps left behind by flat end mill in the previous operation. For effective machining, off-centre ball end milling is employed in such a way that rubbing zone near ball tip is avoided. After confirming the limits of angular immersion from full-slot experimental results, both down and up off-centre milling experiments are conducted on edges of steps created on a test piece. The micro milling forces in off-centre mode are also investigated theoretically using a mechanistic model that considers the geometry of micro ball end mill and basic mechanics of cutting. The amplitudes of predicted forces match well with experimental values and the deviations in the experimental values arise out of micro level unevenness in the step edge. The up milling with lower transverse force is found to be more suitable for machining of thin features. © 2018 CIRP
About the journal
JournalData powered by TypesetCIRP Journal of Manufacturing Science and Technology
PublisherData powered by TypesetElsevier Ltd
ISSN17555817
Open AccessNo
Concepts (10)
  •  related image
    BALL MILLS
  •  related image
    Milling (machining)
  •  related image
    MILLING MACHINES
  •  related image
    AMPLITUDE OF FORCE
  •  related image
    FORCE MODEL
  •  related image
    INSTANTANEOUS FORCE
  •  related image
    MICRO BALLS
  •  related image
    OFF-CENTRE MODE
  •  related image
    Size effects
  •  related image
    Ball milling