Biomedical Engineering Reference
In-Depth Information
Chapter 2
C
HATTER AND
B
URR
F
ORMATION
IN THE
D
RILLING OF
M
EDICAL
M
ATERIALS
Tamara Novakov and Mark J. Jackson
1
Center for Advanced Manufacturing, Purdue University,
401 North Grant Street, West Lafayette, IN 47907, US
A
BSTRACT
Chatter presents one of the main problems in quality of machined
surfaces limiting tool life, productivity, and tolerances. Chatter in milling
and turning operations has been extensively analyzed however drilling
operations have been neglected due to the complexity of drilling tools and
problems that develop in the modeling of the tool. In this paper, an
overview of chatter vibrations and chatter suppression in drilling has been
presented. In addition, the problem of chatter analysis and suppression in
micromachining processes has been investigated. The differences in
macro and micro scale problems have been addressed giving an overview
of the current research directions and future work for both areas. The
chapter is concluded with a case study showing how medical grade
polymeric materials are drilled using complex geometry drills.
