The influence of an exit surface angle on drilling burr formation was analyzed. The experimental research found that a burr forms on only a certain portion of a hole when an exit surface is not perpendicular to a drill path. An effective interaction angle was newly defined and the concept of degree of plastic deformation was introduced in order to explain this phenomenon. The burr forming location predicted from the effective interaction angle was verified with experimental results.

Issue Section:
Technical Papers
Keywords:
machining, cutting, plastic deformation
Topics:
Cutting, Deformation, Drilling, Drills (Tools)
1.
Stein
,
J. M.
, and
Dornfeld
,
D. A.
,
1996
, “
Influence of Workpiece Exit Angle on Burr Formation in Drilling Intersecting Holes
,”
Transactions of NAMRI/SME
,
24
, pp.
39
–
43
.
2.
Kim, J., Dornfeld, D. A., and Furness, R., 1999, “Experimental Study of Burr Formation in Drilling of Intersecting Holes With Gun Drill and Twist Drills,” Technical Papers of NAMRI/SME, pp. 39–44.
3.
Kishimoto
,
W.
,
Miyake
,
T.
,
Yamamoto
,
A.
,
Yamanaka
,
K.
, and
Takano
,
K.
,
1981
, “
Study of Burr Formation in Face Milling
,”
Japanese Society of Precision Engineering
,
15
(
1
), pp.
51
–
52
.
4.
Chu, C. H., 2000, “Integrated Edge Precision Machining,” Ph.D. dissertation, Dept. of Mech. Eng., University of California at Berkeley.
5.
Chern, G. L., 1993, “Analysis of Burr Formation and Breakout in Metal Cutting,” Ph.D. dissertation, Dept. of Mech. Eng., University of California at Berkeley.
6.
Min
,
S.
,
Dornfeld
,
D. A.
,
Kim
,
J.
, and
Shyu
,
B.
,
2001
, “
Finite Element Modeling of Burr Formation in Metal Cutting
,”
International Journal of Machining Science and Technology
,
5
(
3
), pp.
307
–
322
.
7.
Park, I. W., 1996, “Modeling of Burr Formation Processes in Metal Cutting,” Ph.D. dissertation, Dept. of Mech. Eng., University of California at Berkeley.
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 by ASME
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