Results 21 to 30 of about 12,969 (162)

A comparative investigation of meshing characteristics of anti-backlash single-and double-roller enveloping hourglass worm gears

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The new precision transmission system-Anti-backlash roller enveloping hourglass worm gears are now widely employed in many industrial sectors such as robot joint design, packaging production line, and CNC (computer numerical control) machine tools ...
Huan ZHANG   +4 more
doaj   +1 more source

Research on Meshing Characteristics of Trochoidal Roller Pinion Rack Transmission

open access: yesApplied Sciences, 2022
As a precision transmission mechanism, the trochoidal roller pinion rack has been paid more and more attention in recent years, but its meshing characteristics have not been deeply explored.
Haiwei Wang, Lulu Li, Geng Liu
doaj   +1 more source

Resonance Analysis of Horizontal Nonlinear Vibrations of Roll Systems for Cold Rolling Mills under Double-Frequency Excitations

open access: yesMathematics, 2023
In this paper, the fractional order differential terms are introduced into a horizontal nonlinear dynamics model of a cold mill roller system. The resonance characteristics of the roller system under high-frequency and low-frequency excitation signals ...
Li Jiang, Tao Wang, Qing-Xue Huang
doaj   +1 more source

Multiple-twinning induced recrystallization and texture optimization in a differential-temperature-rolled AZ31B magnesium alloy with excellent ductility

open access: yesMaterials Research Letters, 2022
The effect of differential roller temperature (DTR) (low and high roller temperature difference: 60 and 180 K) on the microstructure evolution, deformation mechanism, and mechanical properties were investigated in a commercial AZ31B alloy sheet. Compared
Ruizhi Peng   +5 more
doaj   +1 more source

Effects of design parameters on carrying capacity of a double-row tapered roller slewing bearing used in wind turbine

open access: yesAdvances in Mechanical Engineering, 2016
Mechanical model with detailed design parameters of a rotor slewing bearing with the structure type of double-row tapered roller for supporting the rotor of the wind turbine was presented.
Yunfeng Li
doaj   +1 more source

Laboratory- and field-based performance-predictions in cross-country skiing and roller-skiing.

open access: yesPLoS ONE, 2021
The purpose of the present study was to investigate how various laboratory- and field-based tests predict on-snow cross-country (XC) skiing and roller-skiing performance.
Rune Kjøsen Talsnes   +4 more
doaj   +1 more source

Optimization experiment on eccentric lapping of cylindrical rollers

open access: yesNanotechnology and Precision Engineering, 2018
Cylindrical rollers are important elements of bearings, and their machining accuracy and consistency affect the bearing quality. Using a GCr15 cylindrical roller of Ф11 × 12 as the processing object in this study, the effects of loading pressure ...
Jia Su   +3 more
doaj   +1 more source

Analysis of Motion Unevenness of a New Double-Pitch Silent Chain for Conveyor

open access: yesJixie chuandong, 2016
In order to reduce the motion unevenness of the conveyor chain,a new kind of double- pitch silent chain is proposed and used in conveyor to replace the traditional double- pitch roller chain.
Wang Wencheng   +4 more
doaj  

Research of Dimensional Accuracy about Shell Case Double Roller Spinning [PDF]

open access: yesProceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016), 2016
This essay proposed a spinning force calculation method based on rolling force, For the computing method of conventional spinning force sometimes has a great error by neglecting deposit metal before roller, and it is analyzed an effective and accurate way by testing a set of craft experiments.
openaire   +1 more source

Motion Error of V-Type Roller Linear Guides Considering Geometric Errors of the Guide Rails

open access: yesApplied Sciences
V-type roller linear guides can achieve extremely high motion accuracy through precision design and machining; however, theoretical research and methodologies in this field remain limited.
Daowei Zhang   +5 more
doaj   +1 more source

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