• SME MR98-246
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SME MR98-246

  • Finite Element Analysis Of Drilling Burr Minimization With A Backup Material
  • standard by Society of Manufacturing Engineers, 11/01/1998
  • Publisher: SME

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3D FEM drilling models with two sets of backup materials were developed to investigate mechanisms of drilling burr minimization and predict cutting forces. They account for temperature-mechanical coupling, automatic mesh contact with friction and material ductile failure simultaneously. Negative shear and gap formation between the part and the backup are dominant mechanisms of drilling burr formation. Simulation results show that burr size is best minimized by use of a backup material having a hole the same diameter as that of the drill. The use of a solid backup material is the second most effective technique for burr minimization.

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