Results 21 to 30 of about 84,148 (213)

Optimization Analysis of Meshing Worm Drive Structure with Roller Enveloping Ring Surface

Journal of Physics: Conference Series, 2023
Abstract Based on the meshing theory of the worm drive with the roller enveloping ring surface and the mathematical model of transmission efficiency of transmission mechanism, the mathematical calculation model of transmission efficiency for simultaneous meshing of multiple teeth has been set up; the geometrical parameters of ...
Huan Lui, Geng Huang
openaire   +1 more source

Envelope analysis applied to non-Hertzian contact simulations in damaged roller bearings

IOP Conference Series: Materials Science and Engineering, 2021
Abstract In the latest years many researcher focused on the possibility to foresee the failure of a mechanical system in the early stages in order to allow quick response times. Monitoring and diagnostics are at the base of those methodologies of predictive maintenance, which represents the standard for companies.
Brusa, E, Bruzzone, F, Delprete, C, Di Maggio, L, Rosso, C   +4 more
openaire   +2 more sources

Simulation and experimental study of influences of shape of roller on the lubrication performance of precision speed reducer

Engineering Applications of Computational Fluid Mechanics, 2020
This paper presents a study to investigate the effects of the shape of rollers in high precision enveloping speed reducer on the reducer’s lubrication performance. Theoretical models for the precision speed reducer with cylindrical and conical rollers as
Xingqiao Deng, Shisong Wang, Linmao Qian, Yucheng Liu   +3 more
doaj   +1 more source

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

Chinese Journal of Mechanical Engineering, 2020
In gear transmission, temperature rise has a non-negligible impact on the accuracy, noise and transmission efficiency. However, there is no relevant research on the temperature rise of the anti-backlash single-roller enveloping hourglass worm (ASEHW ...
Shisong Wang, Shike Wang, Jie Wang, Xingqiao Deng   +3 more
doaj   +1 more source

Influence of Roughness on Isothermal Elastohydrodynamic Lubrication of Roller Enveloped Worm Drive

Jixie chuandong, 2022
Based on the meshing principle of the roller enveloped end face worm drive pair， the influence of the center distance， the roller radius， the throat coefficient， and the worm gear diameter are considered comprehensively. According to the elastohydrodynamic lubrication theory， the Newton iteration method is used in Matlab.
Yan Qi, Honghui Liao, Xudong Wang, Zaixin Liu, Jinkuan Li   +4 more
openaire   +1 more source

Theoretical Research of Roller Enveloping the Side-worm Gear Pairs Drive

DEStech Transactions on Engineering and Technology Research, 2017
Roller enveloping the side-worm gear pairs drive is proposed basing on roller enveloping hourglass worm drive. Roller enveloping the side-worm gear pairs drive means to assembling the roller on the end surface of the worm wheel equally. The hourglass worm tooth surface equation can be deduced by applying spatial meshing theory and differential geometry
Hao Rong, Zaixin Liu, Jinkuan Li, Jieyu Pu, Jianjun Quan   +4 more
openaire   +2 more sources

Thermal Elastohydronamic Lubrication Characteristics of Inclined Double-roller Enveloping Hourglass Worm Drive

Journal of Physics: Conference Series, 2023
Abstract To grasp thermal elastohydrodynamic lubrication (TEHL) characteristics of the conjugating tooth-pairs of inclined double-roller enveloping hourglass worm drive in transmission process. The numerical solutions of line contact thermal EHL were obtained based on meshing theory of this worm drive and the theory of EHL. The TEHL line
Jinkuan Li, Yujie Wen, Zaixin Liu
openaire   +1 more source

Modelling and simulation of dynamic wheel-rail interaction using a roller rig [PDF]

, 2012
The interaction between the wheel and rail greatly influences the dynamic response of railway vehicles on the track. A roller rig facility can be used to study and monitor real time parameters that influence wheel-rail interaction such as wear, adhesion,
Gu, Fengshou, Pislaru, Crinela, Ball, Andrew, Gu, F., Anyakwo, A., Ball, A., Anyakwo, Arthur, Pislaru, C.   +7 more
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source