A finite element model of orthogonal metal cutting including burr formation is presented. A metal-cutting simulation procedure based on a ductile failure criterion is proposed for the purpose of better understanding the burr formation mechanism and obtaining a quantitative analysis of burrs using the finite element method. In this study, the four stages of burr formation, i.e., initiation, initial development, pivoting point, and final development stages, are investigated based on the stress and strain contours with the progressive change of geometry at the edge of the workpiece. Also, the characteristics of thick and thin burrs are clarified along with the negative deformation zone formed in front of the tool edge in the final development stage. [S0094-4289(00)00702-7]

Issue Section:
Technical Papers
Keywords:
metals, manufacturing processes, finite element analysis, machining, cutting
Topics:
Cutting, Deformation, Failure, Finite element analysis, Finite element methods, Finite element model, Metal cutting, Simulation, Steady state, Geometry, Shear (Mechanics)
1.
Gillespie
,
L. K.
, and
Blotter
,
P. T.
,
1976
, “
The Formation and Properties of Machining Burrs
,”
ASME J. Eng. Ind.
,
98
, Feb., pp.
64
–
74
.
2.
Iwata
,
K.
,
Ueda
,
K.
, and
Okuda
,
K.
,
1982
, “
Study of Mechanism of Burrs Formation in Cutting Based on Direct SEM Observation
,”
J. Japan Society of Precision Engineering
,
48-4
, pp.
510
–
515
.
3.
Ko
,
S. L.
, and
Dornfeld
,
D. A.
,
1991
, “
A study on Burr Formation Mechanism
,”
ASME J. Eng. Ind.
,
98
, No.
1
, pp.
66
–
74
.
4.
Chern, G. L., 1993, “Analysis of Burr Formation and Breakout in Metal Cutting,” Ph.D. Thesis, University of California, Mechanical Engineering Department, pp. 25–42.
5.
Chern
,
G. L.
, and
Dornfeld
,
D. A.
,
1996
, “
Burr/Breakout Development and Experimental Verification
,”
ASME J. Eng. Mater. Technol.
,
118-2
, pp.
201
–
206
.
6.
Pekelharing
,
A. J.
,
1978
, “
The Exit Failure in Interrupted Cutting
,”
CIRP Ann.
,
27
, pp.
5
–
10
.
7.
Klamecki, B. E., 1973, “Incipient Chip Formation in Metal Cutting—Three Dimension Finite Element Analysis,” Ph.D. dissertation, Univ. of Illinois, Urbana-Champaign.
8.
Usui
,
E.
, and
Shirakashi
,
T.
,
1982
, “
Mechanics of Machining-From ‘Descriptive ’ to ‘Predictive’ Theory
,” On the Art of Cutting Metals—75 Years Later,
ASME Publication PED
,
7
, pp.
13
–
35
.
9.
Strenkowski
,
J. S.
, and
Carroll
, III,
J. T.
,
1985
, “
A Finite Element Model of Orthogonal Metal Cutting
,”
ASME J. Eng. Ind.
,
107
, pp.
349
–
354
.
10.
Park, I. W., Lee, S. H., and Dornfeld, D. A., 1994, “Modeling of Burr Formation Processes in Orthogonal Cutting by the Finite Element Method,” ESRC Report No. 93–34, Univ. of California, Berkeley, Dec.
11.
Komvopoulos
,
K.
, and
Erpenbeck
,
S. A.
,
1991
, “
Finite Element Modeling of Orthogonal Metal Cutting
,”
ASME J. Eng. Ind.
,
113
, No.
3
, pp.
253
–
273
.
12.
Hibbitt, Karlsson, and Sorenson, Inc., 1988, ABAQUS/Explicit User’s Manuals, Version 5.3, Providence, RI.
13.
Wright
,
P. K.
,
1982
, “
Predicting the Shear Plane Angle in Machining from Workmaterial Strain-Hardening Characteristics
,”
ASME J. Eng. Ind.
,
104
, No.
3
, pp.
285
–
292
.
14.
Lin
,
Z. C.
, and
Lin
,
S. Y.
,
1992
, “
A Coupled Finite Element Model of Thermo-Elastic-Plastic Large Deformation for Orthogonal Cutting
,”
ASME J. Eng. Mater. Technol.
,
114
, pp.
218
–
226
.
15.
Cockcroft
,
M. G.
, and
Latham
,
D. J.
,
1968
, “
Ductility and Workability of Metals
,”
J. Inst. Met.
,
96
, pp.
33
–
39
.
16.
ASME Research Committee on Metal Cutting Data and Bibliography, 1952, Manual on Cutting of Metals with Single-Point Tools, The American Society of Mechanical Engineering.
17.
Stiles, T. A., 1985, “A Scanning Electron Microscope (SEM) Machining Substage for Metal Cutting Observation and Acoustic Emission Analysis,” MS thesis, Univ. of California, Berkeley, Department of Mechanical Engineering.
18.
Barsom, J. M., and Rolfe, S. T., 1987, Fracture & Fatigue Control in Structures, Prentice-Hall Inc., New Jersey.
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