Straight bevel gears are widely used in the plant of large-sized power generation when the gears have large size. The purpose of this study is to manufacture the large-sized straight bevel gears with equi-depth teeth on a multitasking machine. The manufacturing method has the advantages of arbitrary modification of the tooth surface and machining of the part without the tooth surface. For this study, first, the mathematical model of straight bevel gears by complementary crown gears considering manufacture on multitasking machine is proposed, and the tooth contact pattern and transmission errors of these straight bevel gears with modified tooth surfaces are analyzed in order to clarify the meshing and contact of these gears. Next, the numerical coordinates on the tooth surfaces of the bevel gears are calculated and the tooth profiles are modeled using a 3D-Computer-Aided Design (CAD) system. Five-axis control machines were utilized. The gear-work was machined by a swarf cutting using a coated carbide end mill. After rough cutting, the gear-work was heat-treated, and it was finished based on a Computer-Aided Manufacturing (CAM) process through the calculated numerical coordinates. The pinion was also machined similarly. The real tooth surfaces were measured using a coordinate measuring machine and the tooth flank form errors were detected using the measured coordinates. As a result, the obtained tooth flank form errors were small. In addition, the tooth contact pattern of the manufactured large-sized straight bevel gears was compared with those of tooth contact analysis. The data showed good agreement.

References

1.
Dudley
,
D. W.
,
1994
,
Handbook of Practical Gear Design
,
Technomic Publishing Company, Inc.
, Lancaster, PA, p.
1.33
.
2.
Tsai
,
Y. C.
, and
Chin
,
P. C.
,
1987
, “
Surface Geometry of Straight and Spiral Bevel Gears
,”
ASME J. Mech., Trans., Autom. Des.
,
109
, pp.
443
449
.10.1115/1.3258815
3.
Andrew
D.
Dimarogonas
,
2001
,
Machine Design. A CAD Approach
,
Wiley-InterScience
, New York, NY, pp.
869
874
.
4.
Fuentes
,
A.
,
Iserte
,
J. L.
,
Gonzales-Perez
,
I.
, and
Sanchez-Marin
,
F. T.
,
2011
,
Computerized Design of Advanced Straight and Skew Bevel Gears Produced by Precision Forging
,”
Comput. Methods Appl. Mech. Eng.
,
200
, pp.
2363
2377
.10.1016/j.cma.2011.04.006
5.
Gleason Works
,
1966
, 20° Straight Bevel Gear System, No. SD4033B,
Rochester, New York
.
6.
Gleason Works
,
1972
, Straight Bevel Gear Design, No. SD3004E,
Rochester, New York
.
7.
Nakaminami
,
M.
,
Tokuma
,
T.
,
Moriwaki
,
T.
, and
Nakamoto
,
K.
,
2007
, “
Optimal Structure Design Methodology for Compound Multiaxis Machine Tools—I (Analysis of Requirements and Specifications)
,”
Int. J. Autom. Technol.
,
1
(
2
), pp.
78
86
.
8.
Moriwaki
,
T.
,
2008
, “
Multi-Functional Machine Tool
,”
CIRP Ann.
,
57
(
2
), pp.
736
749
.10.1016/j.cirp.2008.09.004
9.
Sakai
T.
,
1955
, “
A Study on the Tooth Profile of Hypoid Gears
,” [
Trans. JSME
,
21
(
102
), pp.
164
170
(in Japanese)].10.1299/kikai1938.21.164
10.
Litvin
,
F. L.
, and
Fuentes
,
A.
,
2004
,
Gear Geometry and Applied Theory
, 2nd ed.,
Cambridge University Press
,
United Kingdom
, pp.
98
101
.
11.
Kawasaki
,
K.
, and
Shinma
,
K.
,
2009
, “
Accuracy Measurement and Evaluation of Straight Bevel Gear Manufactured by End Mill Using CNC Milling Machine
,”
ASME J. Mech. Des.
,
131
, p.
011001
.10.1115/1.2988480
12.
Kawasaki
,
K.
,
Tsuji
,
I.
,
Abe
,
Y.
, and
Gunbara
,
H.
,
2010
, “
Manufacturing Method of Large-Sized Spiral Bevel Gears in Cyclo-Palloid System Using Multi-Axis Control and Multi-Tasking Machine Tool
,”
Proceedings of International Conference on Gears
,
Garching
,
Germany
, Vol.
1
, pp.
337
348
.
13.
Kato
,
S.
, and
Akamatsu
,
T.
,
1982
, “
Measuring Method of Hypoid Gear Tooth Profiles
,” SAE Technical Paper No. 810105.
14.
Gosselin
,
D.
,
Nonaka
,
T.
,
Shiono
,
Y.
,
Kubo
,
A.
, and
Tatsuno
,
T.
,
1998
, “
Identification of the Machine Settings of Real Hypoid Gear Tooth Surfaces
,”
ASME J. Mech. Des.
,
120
, pp.
429
440
.10.1115/1.2829170
15.
Fan
,
Q.
,
DaFoe Ronald
,
S.
, and
Swangaer John
,
W.
,
2008
, “
Higher-Order Tooth Flank Form Error Correction for Face-Milled Spiral Bevel and Hypoid Gears
,”
ASME J. Mech. Des.
,
130
, p.
072601
.10.1115/1.2898878
16.
Kawasaki
,
K.
, and
Tsuji
,
I.
,
2010
, “
Analytical and Experimental Tooth Contact Pattern of Large-Sized Spiral Bevel Gears in Cyclo-Palloid System
,”
ASME J. Mech. Des.
,
132
, p.
041004
.10.1115/1.4001348
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