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유성기어 주행감속기 치형의 마이크로 지오메트리 최적화에 관한 연구

Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer

Journal of the Korean Society for Precision Engineering 2017;34(6):371-376.
Published online: June 1, 2017

1 경상대학교 기계시스템공학과, 공학연구원

2 경상대학교 항공IT기계융합사업단

1 Department of Mechanical System Engineering, ERI, Gyeongsang National University

2 Creative Aero-IT-Mech Convergence Engineering Education Program, Gyeongsang National University

#E-mail: sklyu@gnu.ac.kr, TEL: +82-55-772-1632, FAX: +82-55-772-1578
• Received: February 21, 2017   • Revised: March 11, 2017   • Accepted: March 21, 2017

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
J. Korean Soc. Precis. Eng.. 2017;34(6):371-376.   Published online June 1, 2017
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Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
J. Korean Soc. Precis. Eng.. 2017;34(6):371-376.   Published online June 1, 2017
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Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
Image Image Image Image Image Image Image Image Image Image Image Image Image
Fig. 1 Structure of 2 ton planetary gear drive reducer by CATIA
Fig. 2 Structure of 2 ton planetary gear drive reducer by Romax Designer
Fig. 3 Structure of gear system modeled & separated front gear set
Fig. 4 Planetary gear load distribution of front gear set
Fig. 5 Sun gear load distribution of front gear set
Fig. 6 Gear load distribution of front gear set (3D situation)
Fig. 7 Load distribution optimization of planetary gear in front gear set
Fig. 8 Load distribution optimization of sun gear in front gear set
Fig. 9 Load distribution optimization of gears in front gear set (3D situation)
Fig. 10 Optimization result of front planet gear
Fig. 11 Optimization result of front sun gear
Fig. 12 Gear safety factors of the gearbox after optimization
Fig. 13 Simulated gear damage probability of the gearbox after optimization
Study on the Tooth Micro-Geometry Optimization of Planetary Gear for Drive Reducer
Spec. Sun Planet Ring
Front
set
Tooth No. 16 32 80
Width [mm] 24 24 24
Module 2
Pressure angle 20°
Displace. factor -0.1 -0.05 0.05
Gear ratio 6
Rear
set
Tooth No. 10 35 80
Width [mm] 16 16 16
Module 2
Pressure angle 20°
Displace. factor 0.05 -0.05 0.05
Gear ratio 9
Total gear ratio 53
Spec. name Parameter
Max output torque 5390 Nm
Max total displacement 1992 cm3/rev
Max motor displacement 33.8 cm3/rev
Gear ratio 53
Max speed 60 rpm
Max shaft speed 3300 rpm
Speed ratio 2
Max flow 60 L/min
Max pressure 27.5 MPa
Brake torque 49 Nm
Spec. name Front (Planet) Front (Sun)
Before modification
(μm)
Lead crown 0 0
Lead slope 0 0
After modification
(μm)
Lead crown 0 10.00
Lead slope 0 -22.00
Table 1 Specifications of planetary gear of 2 ton drive reducer
Table 2 Specifications of 2 ton planetary gear drive reducer
Table 3 Tooth modification detailed results