Results 91 to 100 of about 3,531 (255)

Electrical impedance observation for lubrication conditions of helical gears under actual operation

open access: yesNihon Kikai Gakkai ronbunshu
In this study, the effectiveness of the electrical impedance method (EIM) for monitoring lubrication conditions in helical gear systems during actual operation was investigated.
Hikaru OKUBO, Asuka WATANABE, Ken NAKANO
doaj   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

open access: yesSmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen   +12 more
wiley   +1 more source

Investigation on the sampling size optimisation in gear tooth surface measurement using a Co-ordinate Measuring Machine

open access: yes, 2004
Co-ordinate Measuring Machines (CMMs) are widely used in gear manufacturing industry. One of the main issues for contact inspection using a CMM is the sampling technique.
Cheng, K, Webb, D, Gao, CH
core   +1 more source

Research of the Variation of Meshing Force of the Plastic Helical Gear and Steel Worm

open access: yesJixie chuandong, 2018
In order to investigate the meshing force of the tooth surface of the plastic helical gear and the steel worm in the transmission process,the mechanical model of the meshing pair of plastic helical gear and steel worm is established by considering the ...
Yun Yonghu, Hu Hong, Ta Jingning
doaj  

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

斜齿轮的参数化建模与动力学分析

open access: yesJixie chuandong, 2006
A method of parametric model of helical gear with the 3D parametric function in Pro/E is presented.By pro/MECHANICA and ANSYS,dynamics characteristics of helical gear are analyzed.Using the method,development cycle of helical gear can be greatly reduced.
朱学文, 朱国文, 何小新
doaj  

Efficient Harvesting of Irregular and Low‐Frequency Mechanical Energy via Hybridized Electromagnetic‐Triboelectric Systems

open access: yesSmall, EarlyView.
ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han   +2 more
wiley   +1 more source

Research on Meshing Theory of Involute Helical Gear with Asymmetric

open access: yes, 2011
This paper analyzes the relationship between cutter parameters and gear profile parameters on the basis of rack cutter with asymmetric, and proves the new type gear can be manufactured by traditional methods.
Wei Li, Ning Li
core   +1 more source

Quasi-Static Loads for a Helical Gear [PDF]

open access: yes, 2023
The primary goal of this work is to calculate the time-varying loads on the gears over a complete mesh cycle for a quasi-static analysis of a double helical gear.
Nair, Karthik Narayanan
core  

Failure of steel helical gear used for automotive transmission [PDF]

open access: yes, 2017
The advantage of helical gear that can operate silently, on parallel and nonparallel shafts at high capacity has been great such that helical gears are used in almost all car transmission systems.
A. Rasid, Zainudin   +2 more
core   +1 more source

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