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Tooth Contact Analysis of Cylindrical Gears with an Unconventional Tooth Profile

Batsch Michał, Wydrzyński Dawid, Przeszłowski Łukasz

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 4

119--129

EN

The paper presents mathematical models of cylindrical gear pairs with various types of tooth profiles, such as eccentric-cycloidal, concavo-convex Novikov type, and involute. Comparative analyses were provided for the aforementioned gear meshes, aimed at determining contact patterns, sliding velocity, and transmission errors. Tooth surface modifications were also considered. The results were compared with findings for a conventional involute gearing. It was found that the contact pattern in Novikov conformal gearing is 30% greater than in the involute gear pair, and 60% greater than in the eccentric-cycloidal gear pair. The smallest sliding velocity was obtained in Novikov gearing, which may be beneficial in terms of durability.

2

Study of Effect of Linear Tip Relief Modification in Power Transmission Efficiency of Spur Gears

Thamba Narendiranath Babu, Tambare Abhijeet Mukund, Ananthanarayanan Krishna Caitanya, Duraiswamy Rama Prabha, Thangavelu Shankar, Easwara Pillai Raj Kumar, Mangalaraja Ramalinga Viswanathan

Archives of Acoustics

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2020

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Vol. 45, No. 2

271--282

EN

This paper explores the influence of linear gear tip relief modification on power transmission efficiency. In real time applications gears experience transmission error (TE) during operation which increases noise and vibration and also results in increased tooth profile deformation during operation of the gear. By providing tip relief profile modification this TE can be decreased. Using MATLAB for computation and ANSYS for the simulation of deformation, stress, strain, life, and factor of safety results for the gear assemblies are obtained. Deformation results are used for the computation change in power transmission efficiency followed by the modal and harmonic analysis of the gears and gear assemblies to determine change in the first mode of natural frequency.

3

Determination of the Function of Transmission Error of Gears

Marciniec A., Płocica M.

Machine Dynamics Research

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2017

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Vol. 41, No. 3

137--146

EN

The aim of the paper is to provide an overview of the underlying principles of the tooth contact analysis (TCA) with particular focus on the function of transmission error (TE) which in a very significant way affect the dynamic behavior of a gear pair. Tooth surface generation model is presented and the three methods of the conventional approach for determination of the contact point path (CPP) and TE function.

4

Gear Transmission Error Measurements Based on the Phase Demodulation

Tuma J.

Mechanika / Akademia Górniczo-Hutnicza im. St. Staszica

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2003

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T. 22, z. 3

463-470

EN

The paper deals with a simple gear set transmission error (TE) measurements at gearbox operational conditions that means under load and during rotation. The analysis method is focused on the processing of pulse signals generated by encoders attached to both the gears in mesh. The analysis technique benefits from demodulation of a phase-modulated signal. The theory is illustrated by experiments with a car gearbox and measurement errors are discussed.

5

Characteristics of meshing of spiral bevel gears

Marciniec A.

Archiwum Technologii Maszyn i Automatyzacji

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2003

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Vol. 23, Nr 2

165-174

EN

The major features of meshing of spiral bevel gears of Gleason type are described in the paper. That type of gear is characterized by tapered tooth depth and tooth line having the form of a circular arc. Both constructional and technological gear drives were taken into consideration. Constructional gear drive which represents real operating gear drive is distinguished by point contact of mating teeth surfaces while in technological gear drives representing pinion and gear cutting processes, line contact occurs. The rules for construction and interpretation of tooth bearing contact and transmission error graphs of the gear drive are also presented

PL

W artykule przedstawiono podstawowe właściwości zazębienia przekładni stożkowej o koło-wo-łukowej linii zęba typu Gleason, charakteryzującej się zbieżnością wysokości zęba. Rozważano zarówno przekładnie konstrukcyjne, jak i technologiczne. Przekładnia konstrukcyjna odznacza się występowaniem styku punktowego pomiędzy powierzchniami współpracujących zębów. Natomiast w przekładniach technologicznych w procesie obróbki obwiedniowej koła i zębnika występuje styk liniowy. Zaprezentowano także zasady tworzenia i interpretacji wykresów śladu współpracy i nierównomierności ruchu przekładni.