scholarly journals Design, Manufacture and Load Carrying Capacity of Novikov Gears with 3-5 Pinion Teeth for High Gear Ratio : 1st Report; Design, Manufacture and Power Transmission Efficiency

1984 ◽  
Vol 27 (229) ◽  
pp. 1521-1528 ◽  
Author(s):  
Akira ISHIBASHI ◽  
Hidehiro YOSHINO
Keyword(s):  
Carrying Capacity ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Gear Ratio ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Report Design

scholarly journals Comparison of Load Carrying Capacity of Three and Four Lobed Polygonal Shaft and Hub Connection for Constant Grinding Diameter

2016 ◽  
Author(s):  
Ravi Bhatta ◽  
Wendy Reffeor
Keyword(s):  
Carrying Capacity ◽  
Power Transmission ◽  
Axial Stress ◽  
Von Mises Stress ◽  
Load Carrying Capacity ◽  
Interference Fit ◽  
Bending Load ◽  
Load Carrying ◽  
Von Mises ◽  
Conformal Contact

Polygonal shafts are used in power transmission as alternatives to keyed and splined shafts. They are designed using DIN standards. This research explores the loading strength of the standardized three lobed (P3G) and four lobed (P4C) polygonal shafts and hubs manufactured from the same stock size, subjected to torsional bending load at various fits. Due to complex conformal contact (nonlinear model) between the shaft and the hub, there is no analytical solution and, therefore, Finite Element Method had been used to determine the stresses, after validating experimentally and using the DIN standard. From the analysis, it was found that the hub experienced greater stress than the shaft in all cases and the major stress in a polygonal shaft and hub connection is the contact stress. The clearance fit was found to be the most detrimental fit and the interference fit to be the most suitable for larger power transmission. Owing to its small normal axial stress and hub displacement, the P4C clearance fit has its use in low power transmission where a sliding fit is a requirement. The maximum von Mises stress was located below the surface for P4C and P3G clearance fit, suggesting failure from pitting and fretting on these shafts. All of the stresses were found to be higher in P4C than P3G for similar loading. Therefore, for general use, the P3G profile with an interference fit is recommended.

scholarly journals Development of Plastic Gears for Power Transmission : Design on Load-Carrying Capacity

1986 ◽  
Vol 29 (250) ◽  
pp. 1326-1329 ◽  
Author(s):  
Kenichi TERASHIMA ◽  
Naohisa TSUKAMOTO ◽  
Noriteru NISHIDA
Keyword(s):  
Carrying Capacity ◽  
Power Transmission ◽  
Load Carrying Capacity ◽  
Transmission Design ◽  
Load Carrying ◽  
Plastic Gears

Effects of groove orientation on transmission characteristics of hydro-viscous film in the parallel-disk system

2019 ◽  
Vol 234 (2) ◽  
pp. 183-192 ◽  
Author(s):  
Huasheng Gong ◽  
Haibo Xie ◽  
Liang Hu ◽  
Huayong Yang
Keyword(s):  
Carrying Capacity ◽  
Reynolds Equation ◽  
Transmission Efficiency ◽  
Load Carrying Capacity ◽  
Disk System ◽  
Thermal Equation ◽  
Parallel Disk ◽  
Load Carrying ◽  
Viscous Torque ◽  
Hydrodynamic Behaviors

The disk groove can greatly influence the hydrodynamic behaviors of the rotating film, especially on the cooling performance and the transmission efficiency. In the present work, the effects of groove orientation on the hydro-viscous transmission of the parallel-disk system are investigated. The Reynolds equation and thermal equation, considering tangential Coriolis effect and temperature–viscosity dependency, are derived and solved. The effects of the groove orientation on the shear stress, load-carrying capacity, viscous torque, and transmission efficiency are analyzed. The results reveal that the Coriolis resisting torque can be restrained but the load-carrying capacity declines if the groove orientation is consistent with the rotating direction, and the variation of the transmission efficiency can even be inverted at the turning point of the groove orientation. Therefore, the effects of groove orientation must be paid more attention in the hydro-viscous transmission.

New calculation method for the scuffing load-carrying capacity of bevel and hypoid gears

2019 ◽  
Vol 233 (21-22) ◽  
pp. 7328-7337 ◽  
Author(s):  
J Pellkofer ◽  
I Boiadjiev ◽  
D Kadach ◽  
M Klein ◽  
K Stahl
Keyword(s):  
Carrying Capacity ◽  
Calculation Method ◽  
Power Transmission ◽  
Field Application ◽  
Load Carrying Capacity ◽  
Hypoid Gears ◽  
Tribological System ◽  
Higher Power ◽  
Load Carrying ◽  
Tooth Flank

Future trends indicate that the demands on bevel and hypoid gears for higher power transmission and lower weight are continuously increasing. Beside typical fatigue failures such as pitting, tooth root breakage, and tooth flank fracture, spontaneous failures such as scuffing are often observed if the load-carrying capacity of the tribological system consisting of gears and lubricant is exceeded. This paper gives an overview of the newest findings on scuffing specifically on bevel and hypoid gears and discusses the hypoid-specific decisive influence parameters. Furthermore, the newly developed calculation method as well as its verification with test results and results from field application are presented.

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