Experimental and analytical investigation of the influence of pitch deviations on the loading capacity of HCR spur gears

2017 ◽  
Vol 117 ◽  
pp. 96-113 ◽  
Author(s):  
Marina Franulovic ◽  
Kristina Markovic ◽  
Zeljko Vrcan ◽  
Matija Soban
Author(s):  
Shuai Mo ◽  
Zongxiang Yue ◽  
Zhiyou Feng ◽  
Lijuan Shi ◽  
Zhenxing Zou ◽  
...  

The multi-power face gear split flow system is a new type of transmission system, which has the advantages of stable and reliable transmission and strong carrying capacity. And it has great potential in the application of helicopter transmission systems. In this paper, the multi-power face gear split flow system was taken as the research object. Based on the lumped parameter method and Newton’s second law, the translational-torsional dynamic model of the system was established considering the translational vibration and the torsional vibration of the gears, and the meshing force curves and load-sharing coefficient curves were drawn. At the same time, the factors affecting the load-sharing characteristics of the transmission system were studied. The impacts of manufacturing errors, assembly errors, manufacturing error phases, assembly error phases, meshing damping, support stiffness, and the input power on the load-sharing coefficients were analyzed. The research shows that the errors and error phases of spur gears have small impacts on the load-sharing coefficients, while the support stiffness of spur gears has a great impact on the load-sharing coefficients. The errors and error phases of face gears have small impacts on the load-sharing coefficients, while the support stiffness of spur gears has a great impact on the load-sharing coefficients. The load-sharing coefficients increase constantly with the increase in the meshing damping between face gears and spur gears, whereas the load-sharing coefficients decrease constantly with the increase in the input power.


Author(s):  
Jing Wei ◽  
Ai-Qiang Zhang ◽  
Yu-Liang Yang ◽  
Dong-Ming Zhou ◽  
Xue-bin Ru

Gear geometry is critical to the transmission performance. It not only affects the relative motion characteristics, lubrication, efficiency, and loading capacity but also affects the noise and vibration, as well as working reliability of system. The generating principles of one kind of torus involute (TI) gears is presented in this paper. The mathematical model and profiles equation of torus involute gears are derived and the profiles equation and its parameters are proposed. The correct meshing condition and tooth contact analysis (TCA) are analyzed. The loading capacity including contact stress and bending stress, etc., are proposed after compared with cylindrical spur gears. One pair of TI gears is machined according to the generating principles. The analysis results show that the TI gears can reduce the contact stress efficiently and it can effectively improve the bending strength of convex involute gear while the bending strength of concave TI gears is not significantly affected.


Planta Medica ◽  
2012 ◽  
Vol 78 (05) ◽  
Author(s):  
M Wang ◽  
A Chittiboyina ◽  
B Avula ◽  
J Zhao ◽  
N Tabanca ◽  
...  

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