Results 101 to 110 of about 2,796 (234)
The Comparison of Straight Tooth Bevel Gear and Spiral Bevel Gear about the Stress of Gear Tooth
Instrumentation and Equipments, 2016 大型的数控龙门加工中心中，卧式主轴头通过一对直齿圆锥齿轮副来作为相交轴的传动部件。其加工中心在高速运转时，直齿圆锥齿轮副会发出大的噪声和冲击，导致加工中心的加工质量和精度下降。为了解决这一问题，提出采用弧齿圆锥轮副代替直齿圆锥齿轮副。基于ANSYS Workbench软件，分析直齿圆锥齿轮副与弧齿圆锥齿轮副的齿跟弯曲应力和齿面接触应力的状况，在此基础上，得出弧齿圆锥齿轮副在传动过程中其轮齿的综合力学性能要优越于直齿圆锥齿轮副相应的轮齿性能。这使得数控龙门加工中心可回转式卧式主轴头在更换前70分贝的噪声降至到60分贝，噪声得到了显著的降低。 In the large CNC gantry machining center, through a pair of straight bevel gear ...
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Design, Simulation and Multi-Objective Optimization of a Micro-Scale Gearbox for a Novel Rotary Peristaltic Pump. [PDF]
Micromachines (Basel), 2023 Rogkas N +7 more
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Straddle design of spiral bevel and hypoid pinions and gears [PDF]
The design of spiral bevel and hypoid gears that have a shaft extended from both sides of the cone apex (straddle design) is considered. A main difficulty of such a design is determining the length and diameter of the shaft that might be undercut by the ...
Bossler, Robert +4 more
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Power losses in spiral bevel gears [PDF]
This dissertation describes a numerical modelling strategy for characterising the windage of a spiral bevel gear rotating within a static shroud. The techniques employed include the use of a parametric solid model, and flow field modelling using computational fluid dynamics (CFD) software.
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Gearing technology in its modern form has a history of only 100 years. However, the earliest form of gearing can probably be traced back to fourth century B.C. Greece. Current gear practice and recent advances in the technology are drawn together.
Coy, J. J. +2 more
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Effect of Gear Body Temperature on the Dynamic Characteristics of Spiral Bevel Gears
LubricantsThermal effect is an important cause of gear system engineering failure. Spiral bevel gears are widely used in helicopter transmissions, but scuffing often occurs during operation.
Xi-Qing Zheng +2 more
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Design of aircraft turbine fan drive gear transmission system [PDF]
The following basic types of gear reduction concepts were studied as being feasible power train systems for a low-bypass-ratio, single-spool, geared turbofan engine for general aircraft use: (1) single-stage external-internal reduction, (2) gears (offset
Dent, E., Hirsch, R. A., Peterson, V. W.
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Results of NASA/Army transmission research [PDF]
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an interest in advancing the technology for helicopter propulsion systems. In particular, that portion of the program that applies to the drive train and its
Coe, Harold H. +2 more
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TRANSMISSION ERROR OF THE SPIRAL BEVEL GEARS [PDF]
Engineering Mechanics ...., 2020 Z. Fraňová, K. Řehák, A. Prokop
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Design Methodology for Spiral-Bevel Gears of the Main Transmission of Heavy-Duty Mining Dump Trucks
Механика машин, механизмов и материаловThe paper presents a methodology for designing large-module spiral-bevel gears of the main transmission of mining dump trucks, which differs from the known ones by recommendations for optimization of gear ratios in general for the transmission and the ...
Siarhei A. Shyshko +3 more
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