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Journal articles on the topic 'Spur gears'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ciupitu, Liviu. "Educational Model for the Kinematic Study of Non-Circular Gears." Applied Mechanics and Materials 332 (July 2013): 297–304. http://dx.doi.org/10.4028/www.scientific.net/amm.332.297.

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The noncircular gears are used more and more in industrial applications. The paper presents an educational test rig for the kinematic study of non-circular gears. Two gears are studied from kinematic theoretically point of view: a gear with identically oval spur gears and another gear with identically elliptical spur gears, and simulation diagrams are presented. As for the testing rig, a gear with identically oval spur gears has been used. The researchers are able to draw with high precision the variation curve of output angle with respect to input angle. By using numerical methods for integra

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2

Zhai, Guodong, Zhihao Liang, and Zihao Fu. "A Mathematical Model for Parametric Tooth Profile of Spur Gears." Mathematical Problems in Engineering 2020 (February 24, 2020): 1–12. http://dx.doi.org/10.1155/2020/7869315.

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Spur gears are widely used transmission components. In the traditional design process, the noninvolute part of the tooth profile curve is difficult to describe with mathematical equations. This article puts forward a new parametric modeling method, which can describe the modified involute part of spur gears and parameterize and optimize the transition part of the involute curve of the spur gear. And this model of the spur gear can be created by parameters which is input in Scilab software and the spur gear graphic can be completed correspondingly. The experiments show that this modeling method

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3

Manoj, Kumar, and Kumar Amit. "FINAL DRIVE TRANSMISSION SYSTEM: OPTIMAL DESIGN." International Journal For Technological Research In Engineering 9, no. 11 (2022): 26–32. https://doi.org/10.5281/zenodo.6889561.

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The goal of this project is to modify the drive transmission drive system of a 65 HP tractor. A spur planetary drive system is proposed, which has a number of advantages over the traditional cylindrical spur gear drive system. It has a high torque capacity, is smaller, more efficient, and weighs less. Because gears are one of the most important design elements, failure of one gear can have a significant impact on the entire drive system, which can be caused by stress, contact pressures, or temperature. Gears for spur planetary drives are constructed with safety criteria such as tooth root stre

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4

Yousef, Samy, T. A. Osman, M. Khattab, Ahmed A. Bahr, and Ahmed M. Youssef. "A New Design of the Universal Test Rig to Measure the Wear Characterizations of Polymer Acetal Gears (Spur, Helical, Bevel, and Worm)." Advances in Tribology 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/926918.

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This work aims to study the wear characterization of common types of acetal polymer gears (spur, helical, bevel, and worm) using a new TS universal test rig, in order to obtain reliable results and as a reference when compared with acetal nanocomposite gears later. The TS universal test rig consists of three different units that are connected by a main driver shaft and a pair of constantly meshing metal spur gears, which transfer power to the bevel and worm test units. The first unit is used to test the bevel gears, the second unit is used to test the spur and helical gears, and the third unit

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5

Ciornei, F.-C., S. Alaci, I.-C. Romanu, and I. Doroftei. "Proposed gear rack cutter for spur gear manufacturing by generating method. Part I: Theoretical and strength analysis arguments." IOP Conference Series: Materials Science and Engineering 1262, no. 1 (2022): 012042. http://dx.doi.org/10.1088/1757-899x/1262/1/012042.

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The paper presents the cutting by generating of spur gears using a rack cutter with a modified geometry. In order to find the geometry of the new spur gears, a proper programme has been developed. The geometry of this spur gear is compared with one of a gear with the same parameters but obtained with a standard rack cutter. The differences between the two gears are insignificant but the new tool has a simpler geometry and a higher durability.

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6

Zhuang, Wuhao, Lin Hua, Xinghui Han, and Liying Dong. "Distribution of Microstructure and Vickers Hardness in Spur Bevel Gear Formed by Cold Rotary Forging." Advances in Mechanical Engineering 6 (January 1, 2014): 809276. http://dx.doi.org/10.1155/2014/809276.

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Cold rotary forging is a novel metal forming technology which is widely used to produce the high performance gears. Investigating the microstructure and mechanical property of cold rotary forged gears has a great significance in improving their service performance. In this study, the grain morphology in different regions of the spur bevel gear which is processed by cold rotary forging is presented. And the distribution regulars of the grain deformation and Vickers hardness in the transverse and axial sections of the gear tooth are studied experimentally. A three-dimensional rigid-plastic FE mo

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7

Götz, Joshua, Sebastian Sepp, Michael Otto, and Karsten Stahl. "Low excitation spur gears with variable tip diameter." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 5 (2021): 1275–85. http://dx.doi.org/10.3397/in-2021-1799.

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One important source of noise in drive trains are transmissions. In numerous applications, it is necessary to use helical instead of spur gear stages due to increased noise requirements. Besides a superior excitation behaviour, helical gears also show additional disadvantageous effects (e.g. axial forces and tilting moments), which have to be taken into account in the design process. Thus, a low noise spur gear stage could simplify design and meet the requirements of modern mechanical drive trains. The authors explore the possibility of combining the low noise properties of helical gears with

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8

Lyashenko, Vyacheslav, and Diana Rudenko. "Modeling Deformation of Spur Gear." International Journal of Recent Technology and Applied Science 3, no. 2 (2021): 81–91. http://dx.doi.org/10.36079/lamintang.ijortas-0302.275.

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In The work considers 11 types of gears, features of their design and application. Analysis of gears designs is carried out, since shape of teeth directly affects process of teeth gearing, and this, in turn, affects load, which causes deformation of elements. 3D model of spur gear was created in ANSYS system. The work was limited by analyzing problem from point of view of gear wheels’ deformation, which were made of 40L carbon steel and carbon composite material. As a result, finite element modeling and analysis of gears using ANSYS system was carried out.

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9

Feng, Ji Ling, and Yi Qin. "Load Bearing Capacity Investigation and Coating Failure Mechanism for Coated Spur Gears." Applied Mechanics and Materials 446-447 (November 2013): 491–96. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.491.

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Spur gears are the most common type of gears for industry, due to its simple structures and low costs of manufacture. Under the complex loading conditions, failures can easily occur in the form of de-bonding, pitting, spalling or crushing of coating structures. Failure may originate from initiation of cracks, and its growth and propagation, however, basic failure mechanism is still not clear. In order to investigate the failure mechanism of coating structure failure for the spur gears, this paper presents some understandings about the coating damage at the teeth flank of a spur gear, based on

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10

Thomas, Benny, K. Sankaranarayansamy, S. Ramachandra, and Suresh Kumar S.P. "Selection of Pressure Angle based on Dynamic Effects in Asymmetric Spur Gear with Fixed Normal Contact Ratio." Defence Science Journal 69, no. 3 (2019): 303–10. http://dx.doi.org/10.14429/dsj.69.13636.

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Asymmetric spur gears are finding application in many fields including aerospace propulsion and automobile which demand unidirectional or relatively higher load on one side of the gear flank. Design intend to maximise the load carrying capacity of the drive side of asymmetric gear by increasing the pressure angle is achieved at the expense of coast side capacity. Multiple solution for coast to drive side pressure angle exist for a given contact ratio and each of these have relative merits and demerits. In the present work asymmetric spur gears of theoretically equal contact ratio as that of co

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11

TUSHAR, JAIN, S. JAIN SHUBHAM, KAZI SHABNAM, and JAIN S. R. DULANGE VISHAL. "BENDING STRESS AND THERMAL ANALYSIS OF SPUR GEAR BY USING FEM." JournalNX - A Multidisciplinary Peer Reviewed Journal NITET2017 (March 16, 2017): 70–73. https://doi.org/10.5281/zenodo.1461386.

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Gear is the one of the important machine element in the mechanical power transmission system. Spur gear is most basic gear used to transmit power between parallel shafts. Spur gear generally fails by bending failure or contact failure. This paper deals with the bending stress calculation of spur gear theoretically and validating it with ANSYS software. These meshed gears from the gear box are subjected to considerable damage throughout its life span due to dynamic excitations caused by terrain undulations, the rotating wheel and track assemblies. The friction between two rolling gears results

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12

Shen, Zhao Kui, and Xiao Lin Pan. "The Development of Graphic Design Method Based on Pro/Toolkit Spur Gears." Advanced Materials Research 328-330 (September 2011): 606–9. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.606.

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Pro/Toolkit is the powerful secondary development provide of Pro/E ,It encapsulates many aimed at Pro/E bottom resources library function and call header files.Using VC++6.0 for integrated development environment and under Windows for development.This paper mainly introduces a graphic design method based on Pro/Toolkit spur gears.Firstly by using Pro/E to establish the spur gears 3d model and realize the 3d model parametric design. Then using VC++6.0 to type VC DLL program, design MFC dialog and for source program's compiles and links, to create dynamic link files(DLL or EXE files), through th

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13

Wang, You Qiang, Zhi Cheng He, and Wei Su. "Study of Transient Elastohydrodynamic Lubrication of Spur Gears under Impact Load." Applied Mechanics and Materials 121-126 (October 2011): 3506–9. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3506.

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Spur gear contacts experience a number of time-varying contact parameters including the load, surface velocities, radii of curvature, and slide-to-roll ratio. It is very hard to obtain transient elastohydrodynamic lubrication (EHL) solution of spur gears. In this study, a transient EHL model of involute spur gear tooth contacts is proposed. A full transient EHL solution of involute spur gear under impact load is obtained by utilizing the multigrid technique. The influences of impact load on the EHL of spur gear are analyzed in the paper. The numerical results show that the approach impact load

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14

Buran, Amit A., Prof Mahesh P. Chopade, and Dr Vinod S. Gorantiwar. "Analysis of Spur Gear Using Composite Material." International Journal for Research in Applied Science and Engineering Technology 11, no. 3 (2023): 1639–45. http://dx.doi.org/10.22214/ijraset.2023.49762.

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Abstract: Spur gears are the simplest and widely used in power transmission. In recent years it is required to operate machines at varying load and speed. Gear teeth normally fail when load is increased above certain limit. Therefore, it is required to explore alternate materials for gear manufacturing. Composite materials provide adequate strength with weight reduction and they have emerged as a better alternative for replacing metallic gears. Composites provide much improved mechanical properties such as better strength to weight ratio, more hardness, and hence less chances of failure. So, t

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15

Karupaiah, Vigneshwaran, Venkateshwaran Narayanan, Rajini Nagarajan, et al. "Performance evaluation of 3D-printed ABS and carbon fiber-reinforced ABS polymeric spur gears." BioResources 19, no. 2 (2024): 2796–810. http://dx.doi.org/10.15376/biores.19.2.2796-2810.

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Acrylonitrile butadiene styrene (ABS) polymer and carbon fiber reinforced acrylonitrile butadiene styrene (CF/ABS) spur gears were 3D-printed using fusion deposition modeling (FDM) with different fillet radii of 0.25, 0.50, and 0.75 mm. The performance of the fabricated gears was studied with the effect of fillet radius on varying load and speed conditions. The thermal properties of the gears were also investigated. The results indicated that 3D-printed CF/ABS spur gear exhibited better performance than the pure ABS. The 3D-printed CF/ABS gear with fillet radius of 0.25 mm recorded the highest

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16

Medvecká-Beňová, Silvia, Peter Frankovský, and Robert Grega. "Influence Gearing Parameters on the Tooth Deformation of Spur Gears." Applied Mechanics and Materials 816 (November 2015): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amm.816.27.

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Gear teeth are deformed due to the load. The tooth deformation of spur gears is not constant for all examined teeth of gears. Tooth deformation is depends on the shape of the teeth, on the basic parameters of examined spur gear, such as the number of teeth, module gearing, pressure angle, gearing width, correction and modification of gearing.

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17

Gabrial, Bryan, Stenly Tangkuman, and Jotje Rantung. "RANCANG BANGUN APLIKASI PERANCANGAN RODA GIGI LURUS MENGGUNAKAN BAHASA PEMROGRAMAN PYTHON." Jurnal Tekno Mesin 10, no. 1 (2024): 1–8. http://dx.doi.org/10.35793/jtm.v10i1.51990.

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ABSTRACT The design of gears has complex and quite complicated stages. Accuracy is required in the gear design process. Therefore, designing gear requires a lot of time. Technological progress is currently growing very rapidly. As a result of technological advances, human performance becomes more effective and efficient. In order to solve problems in designing spur gears, this research will design a spur gear design software that can design spur gears using the Python programming language and provides three types of spur gear arrangements. The spur gear design application is made using the Pyt

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18

MA, YONG, XIAOYAN NIU, LIN QIN, NAIMING LIN, XIANGYU ZHANG, and BIN TANG. "MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mo-MODIFIED Ti6Al4V SPUR GEAR." Surface Review and Letters 24, no. 03 (2017): 1750030. http://dx.doi.org/10.1142/s0218625x17500305.

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In order to improve the performance of the Ti6Al4V (TC4) spur gear, a Mo surface modified layer is prepared by the plasma surface metallurgy technique. The element concentration, microstructure and elastoplastic properties are investigated with glow-discharge optical emission spectroscope (GDOES), scanning electron microscope, optical microscope (OM) and nanoindenter. Engaging with 41Cr4 steel gears, the wear resistances of the treated and untreated TC4 spur gears are evaluated through running-in and operation tests performed by a friction and wear tester under lubricated conditions. By finite

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19

Eskezia, Eniyew, and Misganaw Abebaw. "Effect of Gear Materials on the Surface Contact Strength of Spur Gears." Proceedings of Engineering and Technology Innovation 22 (May 4, 2022): 50–59. http://dx.doi.org/10.46604/peti.2022.8695.

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In gear applications, the initiation of cracks at or near the contact surfaces of gear mates occurs mostly due to the surface contact mode of gear failure. This study aims to investigate the influence of gear materials on the contact strength of spur gears. In this study, four different gear materials are selected and the contact stress on spur gear mates is analyzed. Hertz’s contact stress equation and ANSYS 16 are used for the theoretical analysis and finite element (FE) method, respectively. The results of Hertz’s equation are compared with the results of ANSYS 16. The results show that the

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20

Thomas, Benny, K. Sankaranarayanasamy, S. Ramachandra, and SP Suresh Kumar. "Search method applied for gear tooth bending stress prediction in normal contact ratio asymmetric spur gears." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 24 (2018): 4647–63. http://dx.doi.org/10.1177/0954406217753235.

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Various analytical methods have been developed by designers to predict gear tooth bending stress in asymmetric spur gears with an intention to improve the accuracy of predicted results and to reduce the need for time consuming finite element analysis at the early stages of gear design. Asymmetry in the drive and coast side of asymmetric spur gears poses difficulty in direct application of well-known procedures like American Gear Manufacturers Association and International Organization for Standardization in the prediction of gear tooth bending stress. In earlier works, ISO-6336-3 methodology w

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21

Nadtoka, Olena, and Denis Nadtoka. "Application of computer technologies for calculation of gears at studying of a course " Details of machines"." Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines, no. 1 (December 31, 2021): 15–20. http://dx.doi.org/10.20998/2078-9130.2021.1.230814.

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The computer program GearKURT has been created to calculate mechanical gears. The program allows you to calculate gears: - closed cylindrical spur gear - closed cylindrical helical gear - open cylindrical spur gear - Novikov's gear - closed bevel spur gear - closed bevel gear with indirect teeth - open bevel gear - worm-gear. The computer program has a dialog interface written in the object-oriented programming language Delphi and compiled into an exe-file. The program allows you to choose the necessary material and method of heat treatment

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22

Mo, Guoyin, Fuhao Liu, Hongjiang Wang, Jiahao Liu, and Chengyu Liu. "Modeling Method of Meshing Stiffness of High Speed Spur Gears." International Journal of Mechanical and Electrical Engineering 3, no. 3 (2024): 7–13. http://dx.doi.org/10.62051/ijmee.v3n3.02.

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As one of the most important dynamic excitation sources, the gear time-varying mesh stiffness is the key parameter of gear system dynamic model. So how to calculate the gear mesh stiffness accurately is of great importance. Based on Euler beam theory, this paper proposes a primitive calculation algorithm (PCA) to calculate the time-varying mesh stiffness of spur gears. A simplified gear model is developed based on nonlinear strain-displacement relationships, and a finite element program is used to simulate the gear's meshing stiffness. The rationality of this method was verified through finite

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23

Li, Yu Long, Kun Liu, and Fu Chun Sun. "Dynamic Model of Gears with Trapped Oil and Coupled Analysis in External Spur-Gear Pump." Applied Mechanics and Materials 130-134 (October 2011): 610–15. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.610.

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In order to understand the vibration characteristics of gears based on trapped-oil in external spur-gear pump, from the calculations of trapped-oil pressure and hydraulic load and contact stiffness and trapped-oil stiffness, etc., a dynamic model coupled with trapped-oil pressure was derived for the gears, then an iterative operation based on Runge-Kutta method was used for analyzing the model, therefore the data related to trapped-oil pressure and the vibration displacement and the vibration velocity were obtained in a periodic of trapped oil, and the impact of different backlash value and di

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24

Deng, Xiaohe, Lin Hua, and Xinghui Han. "Research on the Design and Modification of Asymmetric Spur Gear." Mathematical Problems in Engineering 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/897257.

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A design method for the geometric shape and modification of asymmetric spur gear was proposed, in which the geometric shape and modification of the gear can be obtained directly according to the rack-cutter profile. In the geometric design process of the gear, a rack-cutter with different pressure angles and fillet radius in the driving side and coast side was selected, and the generated asymmetric spur gear profiles also had different pressure angles and fillets accordingly. In the modification design of the gear, the pressure angle modification of rack-cutter was conducted firstly and then t

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25

Hasan, Md Zahid, Md Mashrur Islam, Avijit Mallik, et al. "DYNAMIC STRUCTURAL ANALYSIS OF A PAIR OF MESHED SPUR GEARS." Journal of Modern Manufacturing Systems and Technology 3 (October 1, 2019): 50–57. http://dx.doi.org/10.15282/jmmst.v2i2.1557.

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Spur gears are the most well-known kind of gears used in hybrid vehicle’s power transmission. They have straight teeth, and are mounted on parallel shafts. In some cases, many spur gears are utilized without a moment's delay to make huge rigging decreases. In this paper how stress creates on a spur equip under various conditions and conditions and reenactments of a rigging system (two spur gears) is assessed by Ansys workbench. For this static structural and dynamic analysis modeling is utilized. A couple of spurs equip tooth in real life is by and large subjected to two sorts of cyclic stress

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26

Islam, Anisul, and Md Mashrur Islam. "STRESS ON SPUR GEAR AND SIMULATION FOR MICRO HYBRID SYSTEMS BY ANSYS WORKBENCH." Wahana Fisika 4, no. 1 (2019): 21. http://dx.doi.org/10.17509/wafi.v4i1.15174.

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Spur gears are the most well-known kind of gears used in hybrid vehicle’s power transmission. They have straight teeth, and are mounted on parallel shafts. In some cases, many spur gears are utilized without a moment's delay to make huge rigging decreases. In this paper how stress creates on a spur equip under various conditions and conditions and reenactments of a rigging system (two spur gears) is assessed by Ansys workbench. For this static structural and dynamic analysis modeling is utilized. A couple of spurs equip tooth in real life is by and large subjected to two sorts of cyclic stress

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27

Chen, Yang Zhi, and Xiong Dun Xie. "Two-step method of nanosecond pulse laser ablation manufacturing of miniature bevel line gears." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 1-2 (2020): 255–64. http://dx.doi.org/10.1177/0954405420932445.

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Miniature gears have important research value and application prospects in micro-scale machinery. The existing manufacturing methods for miniature gears produce spur gears on the micron scale and spur, helical and bevel gears on the millimetre scale. However, there is no mature process for gears on the micron scale for angular transmissions, such as bevel gears. This article reports for the first time the micro-machining of a miniature bevel gear with an external size of 1–2 mm based on a novel gear structure: the bevel line gear. First, a novel manufacturing method, namely the two-step method

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28

Steward, J. H. "The Compliance of Solid, Wide-Faced Spur Gears." Journal of Mechanical Design 112, no. 4 (1990): 590–95. http://dx.doi.org/10.1115/1.2912651.

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In this paper, the requirements for an accurate 3D model of the tooth contact-line load distribution in real spur gears are summarized. The theoretical results (obtained by F.E.M.) for the point load compliance of wide-faced spur gear teeth are set out. These values compare well with experimental data obtained from tests on a large spur gear (18 mm module, 18 teeth).

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Huruj, Deori, and Dutta Debasish. "COMPARATIVE STUDY OF VON- MISES STRESS FOR SPUR AND BEVEL GEARS FOR VARIOUS PRESSURE ANGLE AND VARIOUS ORIENTATIONS OF AXIS." International Journal of Advances in Engineering & Scientific Research 2, no. 3 (2015): 10–22. https://doi.org/10.5281/zenodo.10726023.

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<strong><em>Abstract</em><em>: </em></strong> <em>                    Spur gear and Bevel gear have variety of application in different field. The main problem of gear is failure due to root bending stress and surface contact stress. Experimental, theoretical and numerical research of bending stress analysis is done by many researchers in years. In this paper only theoretical and numerical methods are used as experimental research are expensive and time consuming. Bending stress is the reason behind

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Kharka, Vishal, Vivek Rana, Neelesh Kumar Jain, and Kapil Gupta. "Performance Characteristics of Spur Gears Hobbed under MQL, Flood Lubrication, and Dry Environments." Lubricants 10, no. 10 (2022): 230. http://dx.doi.org/10.3390/lubricants10100230.

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This paper presents the influence of three lubrication environments, namely hobbing with minimum quantity lubrication (HWMQL), hobbing with flood lubrication (HWFL), and hobbing without any lubrication (HWAL), on the wear characteristics, microhardness, functional performance parameters, generation of noise and vibrations, flank surface roughness, and microgeometry deviation parameters of spur gears. Convective heat transfer coefficients in HWMQL and HWFL are evaluated to study the cooling mechanism involved and their heat dissipation capabilities during spur gear manufacturing. It is found th

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31

Mo, Shuai, Zongxiang Yue, Zhiyou Feng, Lijuan Shi, Zhenxing Zou, and Heyu Dang. "Analytical investigation on load-sharing characteristics for multi-power face gear split flow system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 2 (2019): 676–92. http://dx.doi.org/10.1177/0954406219876954.

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The multi-power face gear split flow system is a new type of transmission system, which has the advantages of stable and reliable transmission and strong carrying capacity. And it has great potential in the application of helicopter transmission systems. In this paper, the multi-power face gear split flow system was taken as the research object. Based on the lumped parameter method and Newton’s second law, the translational-torsional dynamic model of the system was established considering the translational vibration and the torsional vibration of the gears, and the meshing force curves and loa

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32

Mohammed, Jwan Kh, Younis Kh Khdir, and Safeen Y. Kasab. "Contact Stress Analysis of Spur Gear Under the Different Rotational Speed by Theoretical and Finite Element Method." Academic Journal of Nawroz University 7, no. 4 (2018): 213. http://dx.doi.org/10.25007/ajnu.v7n4a292.

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In this study that spur gears are chosen, contact stress of spur gear is presented under the effect of rotational speed. Three-dimensional simulation of dynamic analysis of gears designed and modeled using ANSYS software. The dynamic analysis included in the determination of dynamic stresses analysis. Contact stress is theoretically calculated and analyzed and numerically estimated using both Hertzian mathematical model and finite element method respectively. Different values of rotational speed used to study its effect on contact stress. Both methods compared by evaluating the percentage erro

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33

Feng, Fang, Hui Pan, and Guo Jun Hu. "PRO/E Based Parametric Design of Spur Gears." Advanced Materials Research 201-203 (February 2011): 790–94. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.790.

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This paper adopts the method of PRO/E programs, relationships and parameters to conduct the parametric design process for various types of spur gears, analyzes the key parameters of the spur gears, defines them via programming, and by the use of parameters dialog box and relationships dialog box to define basic parameters and the relationships between them step by step, finally to complete the gear’s parametric model.

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34

Fetvaci, Cuneyt, and C. Erdem Imrak. "Computer Modeling and Simulation of Spur Involute Gears by Generating Method." Key Engineering Materials 450 (November 2010): 103–6. http://dx.doi.org/10.4028/www.scientific.net/kem.450.103.

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This study analyzes the forming principle of spur gears with asymmetric teeth profile by rack-type and pinion-type cutters. Mathematical models of generating and generated surfaces manufactured by generating-type cutters are given. Asymmetric gear tooth is also considered. A computer program is developed to display computer graphs of the spur gears with asymmetric involute teeth. The simulated motion path of the generating cutter is illustrated. The developed computer programs are very helpful in the design of involute gears.

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35

Mehat, Nik Mizamzul, Amirul Aliff Jamaludin, and Shahrul Kamaruddin. "Multiple Reprocessing of Gear Using Recycled Polypropylene." Applied Mechanics and Materials 660 (October 2014): 204–8. http://dx.doi.org/10.4028/www.scientific.net/amm.660.204.

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The reprocessing ability of recycled polypropylene (PP) has been investigated to evaluate the recycling feasibility in spur gear production. Up to 15 reprocessing cycles have been performed by injection moulding, and the effects on tensile properties including ultimate tensile strength, Young’s modulus and elongation at break have been studied. Results revealed that reprocessing ability of recycled PP spur gears could yield satisfactory quality as attractive as that corresponding to the virgin PP spur gear. The recycled PP gears resulted in more 10% variation in tensile properties during multi

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36

Schwarz, Andreas, Martin Ebner, Thomas Lohner, et al. "DLC-coated spur gears – part I: friction reduction." Industrial Lubrication and Tribology 73, no. 3 (2021): 457–69. http://dx.doi.org/10.1108/ilt-07-2020-0257.

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Purpose This paper aims to address the influence of diamond-like carbon (DLC) coatings on the frictional power loss of spur gears. It shows potentials for friction and bulk temperature reduction in industrial use. From a scientific point of view, the thermal insulation effect on fluid friction is addressed, which lowers viscosity in the gear contact due to increasing contact temperature. Design/methodology/approach Thermal insulation effect is analyzed in detail by means of the heat balance and micro thermal network of thermal elastohydrodynamic lubrication contacts. Preliminary results at a t

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Sivák, S., and S. Maláková. "Constructional design of the body shape of large gear wheels." IOP Conference Series: Materials Science and Engineering 1199, no. 1 (2021): 012019. http://dx.doi.org/10.1088/1757-899x/1199/1/012019.

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Abstract The development of modern machines and means of production is characterized by ever-increasing performance parameters with decreasing equipment weight. When designing large gears, it is also necessary to consider the influence of the body shape of the gear wheel. The body shape of gear wheel must meet the basic requirements of stiffness and strength with the lightest possible construction of the gear wheel body. The work is focused on large gears, made with relief. Such gears can be forged, cast, or made by welding. The shape of the gear wheel body depends on several factors such as t

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Liang, Xiao, Xin Tang, Yingjun Li, Rui Shen, Fajia Li, and Ziheng Wu. "Stiffness Analysis of High Contact Ratio Spur Gear with Asymmetric Teeth." Journal of Physics: Conference Series 2557, no. 1 (2023): 012004. http://dx.doi.org/10.1088/1742-6596/2557/1/012004.

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Abstract The demands of high carrying capacity and low vibration of gear transmission systems in aviation, aerospace, and other areas are addressed by high contact ratio gears with asymmetric teeth, which have a wide range of potential applications. The Weber energy technique is utilized to determine the stiffness of high contact ratio spur gears with asymmetric teeth, and the effect law of the stiffness parameters is researched, due to the paucity of study on these gears. The influence of the drive side addendum factor, modulus, and pressure angle on the stiffness of asymmetric high contact r

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Cai, Gai Pin, Xiao Hui Zhao, and Hong Tao Su. "The Finite Element Simulation Used in Straight Tooth Bevel Gear’s Vibration Rotary Forging." Advanced Materials Research 430-432 (January 2012): 1716–20. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1716.

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Vibration rotary forging is a complex precision forming process. In the forming process, the addition of the vibration make the boundary condition and the friction condition of the gear blank and the mould changed with the rotation of the head, which lead the forming process of the spur bevel gears become more complicated. Using the rigid-plastic finite element method to study the metal flow law and the stress distribution of the gear blank during the forming process of the spur bevel gears. Using the DEFORM-3D finite element analysis software to simulate and analysis the forming process of th

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Li, Feng, Xinyu Pang, and Zhaojian Yang. "Joint Amplitude and Frequency Demodulation Analysis Based on Variational Mode Decomposition for Multifault Diagnosis of a Multistage Reducer." Shock and Vibration 2018 (October 9, 2018): 1–19. http://dx.doi.org/10.1155/2018/9869561.

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Multistage reducer vibration signals have complicated spectral structures owing to the amplitude and frequency modulations of gear damage-induced vibrations and the multiplicative amplitude modulation effect caused by time-varying vibration transfer paths (in the case of local gear damage) when the multistage reducer contains both planetary and spur gears. Moreover, the difference between the vibration energies of these gears increases the difficulty of fault feature extraction when multiple failures occur in the reducer. As the meshing frequency of each gear group often varies significantly,

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Xu, Shu Bo, Cai Nian Jing, Ke Ke Sun, Guo Cheng Ren, and Gui Qing Wang. "Finite Element Analysis and Optimization of Deformation Behavior for Spur Gear Warm Forging Process." Advanced Materials Research 148-149 (October 2010): 854–58. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.854.

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Recent years have therefore seen growing interest in gear precision forging to net-shape form of forge bevel, spur and helical gears, as an alternative to conventional manufacturing. In this paper, gear precision forging processes are simulated by using metal forming finite element code DEFORM-3D. The investigations of gear precision forging processes are conducted with perform forging and final forging processes. The processes of completely closed-die forging, moving-die forging and central divided flow forging processes are investigated for spur gears. The effect of different processes on th

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Srinivas, M. Shanmuka, and Sangeeth Purushothaman. "Improving the Load Carrying Capacity through Asymmetric Spur Gear using WC-Fe Metal Matrix Composite for Automobile Applications." Prabha Materials Science Letters 3, no. 1 (2024): 85–93. http://dx.doi.org/10.33889/pmsl.2024.3.1.006.

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Gears are the components that have been used for a century to transmit power from one place to another place. Symmetric spur gears are commonly used in the gearbox to transmit power between two parallel shafts. In order to increase the load carrying capacity of the spur gear with reduced noise and vibration, its profile can be modified. This can be achieved by changing the gear tooth design into asymmetric form. Asymmetrically toothed gears are used in power transmission for transmitting the power in one direction. These teeth help to improve the load carrying and power transmitting capacity o

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Munro, R. G., L. Morrish, and D. Palmer. "Gear transmission error outside the normal path of contact due to corner and top contact." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 4 (1999): 389–400. http://dx.doi.org/10.1243/0954406991522347.

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This paper is devoted to a phenomenon known as corner contact, or contact outside the normal path of contact, which can occur in spur and helical gear transmission systems under certain conditions. In this case, a change in position of the driven gear with respect to its theoretical position takes place, thus inducing a transmission error referred to here as the transmission error outside the normal path of contact (TEo.p.c). The paper deals with spur gears only, but the results are directly applicable to helical gears. It systematizes previous knowledge on this subject, suggests some further

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Cui, Huan Yong, Xi Jie Tian, and Dong Liang Wang. "Design Technique Research of Fine-Forged Spur Bevel Gear Tooth Profile Modification." Key Engineering Materials 443 (June 2010): 170–76. http://dx.doi.org/10.4028/www.scientific.net/kem.443.170.

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Gear tooth profile modification can be featured to improve working stability of gear equipments, abate noise and vibration, enhance loading ability and prolong usage life of the gears. Fine forged spur bevel gear are formed with molds, so it is economical to modify the gears by means of modifying mold cavity. Whether the modified gears can be separated from the mold with easiness is proposed to be the basic criterion of gear tooth profile modification design. Near the big ends and tooth roots is mainly the area which affects demolding after modification. According to the modified gear configur

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Wang, Jian, Liang Hou, and Shan Ming Luo. "Research on Tooth Profile Design of Spur Gears Based on Line of Action." Advanced Materials Research 631-632 (January 2013): 817–23. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.817.

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This paper aims to propose a design method for tooth profiles of spur gears based on given line of action. A simplified derivation of the mathematical model of tooth profiles is introduced according to the meshing theory. Tooth profiles of spur gears, using a parabola as line of action, is established. The result shows that it will be better to control the performances of a gear set by specifying the shape of the line of action rather than specifying tooth profiles of mating gear.

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Hildebrand, Lucas, Florian Dangl, Constantin Paschold, Thomas Lohner, and Karsten Stahl. "CFD Analysis on the Heat Dissipation of a Dry-Lubricated Gear Stage." Applied Sciences 12, no. 20 (2022): 10386. http://dx.doi.org/10.3390/app122010386.

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Power losses in gearboxes result in frictional heating. Sufficient heat transfer from the gearbox to the environment is required for reliable operation. The heat dissipation from gears is linked to their interaction with fluids in the gearbox. Recent research has demonstrated the use of Computational Fluid Dynamics (CFD) to predict the gearbox fluid flow and no-load losses in an isothermal manner. This study focuses on a numerical analysis of the heat dissipation within a dry-lubricated gearbox under atmospheric conditions. Spur gears and helical gears are investigated. The air flow in the gea

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Bibel, G. D., S. K. Reddy, M. Savage, and R. F. Handschuh. "Effects of Rim Thickness on Spur Gear Bending Stress." Journal of Mechanical Design 116, no. 4 (1994): 1157–62. http://dx.doi.org/10.1115/1.2919500.

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Thin rim gears find application in high-power, lightweight aircraft transmissions. Bending stresses in thin rim spur gear tooth fillets and root areas differ from the stresses in solid gears due to rim deformations. Rim thickness is a significant design parameter for these gears. To study this parameter, a finite element analysis was conducted on a segment of a thin rim gear. The rim thickness was varied and the location and magnitude of the maximum bending stresses reported. Design limits are discussed and compared with the results of other researchers.

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Saketharaman, K., C. M. Meenakshi, and D. Ravi. "Analyzing the Life Prediction of Spur Gear based on Vinyl Ester with Different Fibre Proportion." Journal of Physics: Conference Series 2272, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1742-6596/2272/1/012014.

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Abstract The gear is an essential part of every mechanical power transmission system, as well as most industrial rotating machinery. Gears may grow to dominate as the most effective mechanism for transmitting power in future machines due to their high degree of durability and compactness. The vinyl ester resin have high strength and low frictional of porous carbon material. The Vinyl ester resin is used as a reinforced material in plastic gear. In this work, Vinyl Ester and Glass fiber composite material with different proportions were equipped for strengthen cast plastic gear. The spur gear p

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Li, Zhi, Jianmei Wang, Hong Zhang, Jian Chen, and Kun Liu. "Influence of surface topography on the friction and dynamic characteristics of spur gears." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 12 (2020): 1892–907. http://dx.doi.org/10.1177/1350650119897471.

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As an important excitation source of gear dynamic problems, the time-varying friction of tooth surface is closely related to its topography. Considering the friction characteristics of tooth surface is of great significance to improve the calculation accuracy of gear dynamic characteristics. In order to solve the problem that the variation of tooth friction coefficient was simplified too much in the previous gear dynamics research, the time-varying tooth friction coefficient is obtained by fitting the results of twin-disc test in this research. To investigate the influence of tooth surface top

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Anderson, N. E., S. H. Loewenthal, and J. D. Black. "An Analytical Method to Predict Efficiency of Aircraft Gearboxes." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 3 (1986): 424–32. http://dx.doi.org/10.1115/1.3258750.

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A spur gear efficiency prediction method previously developed by the authors was extended to include power loss of planetary gearsets. A friction coefficient model was developed for MIL-L-7808 oill based on disk machine data. This, combined with the recent capability of predicting losses in spur gears of nonstandard proportions, allows the calculation of power loss for complete aircraft gearboxes that utilize spur gears. The method was applied to the T56/501 turboprop gearbox and compared with measured test data. Bearing losses were calculated with large-scale computer programs. Breakdowns of

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