Results 41 to 50 of about 47,461 (209)

An overview of advancements in helicopter transmission design [PDF]

open access: yes, 1983
Development of a high temperature operating helicopter gearbox is ...
Mancini, J. H.
core   +1 more source

Roughness evolution of previously milled samples along a polishing test [PDF]

open access: yes, 2016
In the present work results about roughness evolution along a polishing operation with corundum disks of size Norton 400 are presented. Hardened steel and hardened stainless steel samples were previously subjected to ball-end milling or side milling with
Buj Corral, Irene, Vivancos Calvet, Joan
core   +2 more sources

Research on thermal characteristics of gear based on parametric tooth profile modification

open access: yesAdvances in Mechanical Engineering
This paper establishes a thermal analysis model for parametric profile modification gears based on the heat transfer mechanisms of gear transmission. The main research parameters are the addendum coefficient and the modification coefficient, focusing on ...
Hengzhe Shi, Wei Li, Wanlin Zhou
doaj   +1 more source

Two-parameter Envelope Calculation for the Profile of Worm Grinding Wheel and Dressing Method

open access: yesJixie chuandong, 2022
A mathematical model for tooth profile curve of cylinder gear with high-order modification gear surface is established. Applying two-parameter envelope theory to determine the meshing relationship between worm grinding wheel and helical gears,the ...
Shuai Wang   +5 more
doaj  

Influence of linear profile modification and loading conditions on the dynamic tooth load and stress of high contact ratio gears [PDF]

open access: yes
A computer simulation for the dynamic response of high-contact-ratio spur gear transmissions is presented. High contact ratio gears have the potential to produce lower dynamic tooth loads and minimum root stress but they can be sensitive to tooth profile
Lee, Chinwai   +3 more
core   +1 more source

Effect of tooth profile modification on the durability of planetary hub gears

open access: yesInternational Journal of Powertrains, 2019
Planetary systems offer the advantage of desired speed-torque variation with a lighter, compact and coaxial construction than the traditional gear trains. Frictional losses and Noise, Vibration and Harshness (NVH) refinement are the main concerns.
Fatourehchi, E   +6 more
openaire   +2 more sources

齿廓修形对齿轮齿面温度影响分析

open access: yesJixie chuandong, 2011
Parameterized mathematical modeling of gear is established and computation and analysis of the temperature of tooth surface are carried by ANSYS software.The profile modification of involute gear is introduced and the temperature of tooth surface after ...
杨龙, 李应生, 王志强, 汤鱼
doaj  

MESHING PERFORMANCE ANALYSIS OF FLEXIBLE GEAR TOOTH PROFILE MODIFICATION OF HARMONIC REDUCER (MT)

open access: yesJixie qiangdu, 2023
To explore the effect of the tooth profile modification of the flexible gear on the meshing performance of the harmonic reducer, an assembly model of the hollow harmonic reducer was established, and the meshing situation of the flexible gear and the ...
XU ShaoYan   +5 more
doaj  

Computer-aided design of high-contact-ratio gears for minimum dynamic load and stress [PDF]

open access: yes
A computer aided design procedure is presented for minimizing dynamic effects on high contact ratio gears by modification of the tooth profile. Both linear and parabolic tooth profile modifications of high contact ratio gears under various loading ...
Lee, Chinwai   +3 more
core   +1 more source

Influence of Involute Cylindrical Gear Tooth Profile Modification on the Stress of Gear Tooth

open access: yesJixie chuandong, 2019
Through the analysis and study of involute gear modification, a new method is applied to modify the gear nonworking surface. And the tooth profile equation of the involute gear nonworking surface is built. According to the equation, the finite element analysis model of different modification parameters is established. The static finite element analysis
Xiao Han, Xinli Xu
openaire   +1 more source

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