Results 71 to 80 of about 777 (99)
Small business innovation research. Abstracts of completed 1987 phase 1 projects [PDF]
Non-proprietary summaries of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA in the 1987 program year are given. Work in the areas of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and ...
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An Accurate Approach to Modeling the Genuine Tooth Surfaces of the Face-Milled Spiral Bevel and Hypoid Gears [PDF]
, 2012 Xie, Shuangxi
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Study on Virtual Simulation Machining of Double Circular Arc Profile Spiral Bevel Gear
Applied Mechanics and Materials, 2009Following spatial mesh principle, the gear cutting meshing equation was established in the paper through analyzing the relation between the machining principle of the double circular arc profile spiral bevel gear and the movement of the machine tool. The parameters of cutter head and the machine tool’s movement were then obtained through the equation ...
Ming Lv, Tie Wang
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Journal of Mechanical Design, Transactions of the ASME, 2010
The purpose of this paper is to propose a pair of external and internal spiral bevel gears with double circular-arc in the nutation drive. Based on the movement of nutation, this paper develops equations of the tooth profiles for the gear set, leading to the mathematical modeling of the spiral bevel gear with a constant helical angle gear alignment ...
Ligang Yao, Guowu Wei, Jian S Dai
exaly +2 more sources
The purpose of this paper is to propose a pair of external and internal spiral bevel gears with double circular-arc in the nutation drive. Based on the movement of nutation, this paper develops equations of the tooth profiles for the gear set, leading to the mathematical modeling of the spiral bevel gear with a constant helical angle gear alignment ...
Ligang Yao, Guowu Wei, Jian S Dai
exaly +2 more sources
Contact Trace of Internal Meshing Double Circular-Arc Spiral Bevel Gears
Advanced Materials Research, 2014The meshing contact analysis of double circular-arc spiral bevel gears for nutation drive is considered. Based on gear meshing theory, the mathematical models and meshing equation of the double circular-arc spiral bevel gears are developed. The contact trace satisfies the tooth surface equations and meshing equation simultaneously, and then the contact
Li Gang Yao
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Lecture Notes in Computer Science, 2019
This paper describes the nonlinear finite element analysis model of double circular helical bevel gear nutation drive, the model considering the changes of elastic contact deformation, friction force and the number of meshing tooth of gear, reflecting the actual driving situation of the gear in nutation transmission and dynamic loading.
Yu-jing Su, Li-gang Yao, Jun Zhang 0046
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This paper describes the nonlinear finite element analysis model of double circular helical bevel gear nutation drive, the model considering the changes of elastic contact deformation, friction force and the number of meshing tooth of gear, reflecting the actual driving situation of the gear in nutation transmission and dynamic loading.
Yu-jing Su, Li-gang Yao, Jun Zhang 0046
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Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2019
The influence of the cone vertex error and tilt error on the tooth contact trace of double circular-arc spiral bevel gears for industrial robot joint nutation drive has been studied in this paper. According to the meshing relationship between double circular-arc spiral bevel gear and crown gear, the meshing coordinate systems with latent error ...
Ligang Yao
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The influence of the cone vertex error and tilt error on the tooth contact trace of double circular-arc spiral bevel gears for industrial robot joint nutation drive has been studied in this paper. According to the meshing relationship between double circular-arc spiral bevel gear and crown gear, the meshing coordinate systems with latent error ...
Ligang Yao
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
The new type of nutation reducer with double circular-arc bevel gears as the core is characterized by advantages such as high load-bearing capacity, large transmission ratio, and simple structure. The existing research focuses on the machining methods of gears and the analysis of tooth contact. This article first time establishes an elastohydrodynamic
Zhang Jun, Zhiqiang Yin, Ling Pan
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The new type of nutation reducer with double circular-arc bevel gears as the core is characterized by advantages such as high load-bearing capacity, large transmission ratio, and simple structure. The existing research focuses on the machining methods of gears and the analysis of tooth contact. This article first time establishes an elastohydrodynamic
Zhang Jun, Zhiqiang Yin, Ling Pan
exaly +2 more sources
Advanced Materials Research, 2010
This paper proposes an approach for calculating the transmission ratio of nutation drive based on the working principle of the nutation movements. Then, the analysis of the influences for the nutation angle on the transmission ratio is carried out.
Li Gang Yao
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This paper proposes an approach for calculating the transmission ratio of nutation drive based on the working principle of the nutation movements. Then, the analysis of the influences for the nutation angle on the transmission ratio is carried out.
Li Gang Yao
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Lubrication Science
ABSTRACTA thermal elastohydrodynamic lubrication model is combined with a wear model under mixed lubrication to investigate the lubrication performance and wear characteristics of double‐circular‐arc spiral bevel gears for nutation drive. Moreover, the effects of operating conditions on the characteristic parameters of the film are analysed under the ...
Ling Pan
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ABSTRACTA thermal elastohydrodynamic lubrication model is combined with a wear model under mixed lubrication to investigate the lubrication performance and wear characteristics of double‐circular‐arc spiral bevel gears for nutation drive. Moreover, the effects of operating conditions on the characteristic parameters of the film are analysed under the ...
Ling Pan
exaly +2 more sources