Results 1 to 10 of about 7,636 (305)

Design and Analysis of Novel Non-Involute Cylindrical Gears with a Curved Path of Contact

open access: yesMathematics, 2022
In this paper, novel non-involute cylindrical gears are designed based on a curved path of contact. Firstly, a parabolic curve is predesigned as the contact path of novel gears.
Chao Jia   +3 more
doaj   +2 more sources

Involutes of Pseudo-Null Curves in Lorentz–Minkowski 3-Space

open access: yesMathematics, 2021
In this paper, we analyze involutes of pseudo-null curves in Lorentz–Minkowski 3-space. Pseudo-null curves are spacelike curves with null principal normals, and their involutes can be defined analogously as for the Euclidean curves, but they exhibit ...
Rafael López   +3 more
doaj   +1 more source

An Approach For Forming Spur Gear Tooth Profile [PDF]

open access: yesEngineering and Technology Journal, 2008
Due to high working speed requirement in industry of rotating components, geardesign development become quite noticeable and rapid in the vicinity of engineeringparameters which become to have a large effect on its performance.
Safaa H. Abdulrahman, Adnan D. Mohammed
doaj   +1 more source

Explores for the source of the gears in traditional Japanese clock (Wadokei)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
The purpose of this study is to understand the nature of one of the oldest gears used in traditional Japanese clock. Today's gear manufacturing technology in Japan came mostly from Europe and America, but we do not know exactly, when and how the ...
Akio UEDA   +4 more
doaj   +1 more source

Normal vector based generation of straight bevel gears tooth surfaces

open access: yes上海师范大学学报. 自然科学版, 2017
Tooth surface generation and design of bevel gears is a challenging and multi-choice problem.A normal vector based method is established to describe the geometries of tooth surfaces of straight bevel gears.The normal vector of the tooth surfaces is ...
Lin Jing
doaj   +1 more source

Different teeth profile shapes of polymer gears and comparison of their performance

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
This article presents a lifespan testing analysis of polymer gears manufactured by cutting. Compared to injection molding, machine cutting provides higher accuracy of gear geometry. Two different tooth flank geometries were tested; i.e.
Damijan ZORKO   +3 more
doaj   +1 more source

High-order involute modified noncircular bevel gears

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
Noncircular bevel gears (NBGs) is a kind of spatial transmission mechanism which can be used to transmit the motion and power between two intersecting axes with a variable transmission ratio and according to a suitable motion program.
Jiqiang XIA, Kan SHI, Chunjie WANG
doaj   +1 more source

Simulation and Verification of Involute Spline Tooth Surface Wear before and after Carburizing Based on Energy Dissipation Method

open access: yesMachines, 2023
This work studies the tooth surface wear of floating involute spline couplings. Based on the energy dissipation method, this study takes the floating involute spline couplings as the research object, divides the whole wear cycle into three wear stages ...
Xiangzhen Xue   +4 more
doaj   +1 more source

High-contact ratio spur gears with conformal contact and reduced sliding

open access: yesResults in Engineering, 2022
The high-contact ratio (HCR) spur gear is a possible choice for a quiet and smooth gearing system. However, HCR spur gear of the involute type has several constraints, such as high sliding contact under large loads and interference problems in high speed
Ahmed W. Hussein, Mohammad Q. Abdullah
doaj   +1 more source

Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory

open access: yesChinese Journal of Mechanical Engineering, 2021
Lubrication failure is one of the main failure forms of gear failure. Time varying meshing stiffness is an important factor affecting the dynamic behavior of gears.
Zhaoming Yin, Zhimin Fan, Feng Jiang
doaj   +1 more source

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