Measuring radial wobble in gear-wheel rims

1960 ◽  
Vol 3 (4) ◽  
pp. 287-287 ◽  
Author(s):  
V. N. Levitskii
Keyword(s):  
Gear Wheel ◽  
Radial Wobble

Gear shifting in gearboxes of crane mechanisms

2020 ◽  
pp. 9-11
Author(s):  
YU.V. Remizovich ◽  
O.V. Abdulaeva
Keyword(s):  
Gear Wheel ◽  
Gear Ratio ◽  
Stepper Motor ◽  
Device Performance ◽  
Control Effect

A device for gear shifting in a gearbox with composite gears with integrated couplings in which rolling bodies are used is proposed. For device performance, the drive is carried out from a stepper motor with a combination of a screw pair and a wedge mechanism on its shaft, which increases the control effect on the coupling. Keywords gearbox, variable gear ratio, gear wheel, coupling, stepper motor, screw pair, wedge mechanism. [email protected]

scholarly journals INJECTION MOLDING OF A PLASTIC GEAR WHEEL DURING THE CHANGE OF THE TECHNOLOGICAL MODES OF PROCESS

2016 ◽  
Vol 33 (01) ◽  
pp. 31-34
Author(s):  
Denis Alexandrovich Chemezov ◽  
◽  
Nikita Andreevich Palev ◽  
Keyword(s):  
Injection Molding ◽  
Gear Wheel

scholarly journals Analytical approach to determination of surface strengthening of chevron gears

2021 ◽  
Vol 102 (2) ◽  
pp. 5-12
Author(s):  
Kateryna Kamchatna-Stepanova
Keyword(s):  
Technological Process ◽  
Control Object ◽  
Gear Wheel ◽  
Information Model ◽  
Process Conditions ◽  
Information Classification ◽  
Technological Structure ◽  
Qualitative Characteristics ◽  
Material Input

The construction of an information model of the processes of gear processing of hardened large-modular chevron gears is one of the stages of control of the technological structure and parameters of the automation of the design of the technological process. Taking into account the principles of information classification, the automated gear processing process is considered as a control object, consisting of a number of technological objects: initial material (input of the control object); environment (process conditions); gear wheel (output of the control object, quantitative and qualitative characteristics of the surface layer) The construction of an information model of the processes of gear processing of hardened large-modular chevron gears is one of the stages of control of the technological structure and parameters of the automation of the design of the technological process.

ONE OF THE POSSIBLE APPROACHES FOR DESIGNING A HOB CUTTER FOR MACHINING A SMALL CYCLOIDAL CONE

2021 ◽  
pp. 97-103
Author(s):  
В.В. Куц ◽  
А.А. Панин ◽  
Д.Н. Тютюнов ◽  
К.В. Жилина
Keyword(s):  
Gear Wheel ◽  
Front Surface ◽  
Necessary Condition ◽  
Machining Accuracy ◽  
Small Range ◽  
New Approach ◽  
Main Requirement ◽  
Number Of Factors ◽  
Gear Wheels ◽  
The Cost

Предлагается краткий обзор промышленного производства червячных фрез. Показано, что повышение качества и производительности изготовления зубчатых колес является необходимым условием снижения себестоимости и расширения объемов производства зубчатых колес на отечественных предприятиях. Главным требованием, предъявляемым к зубьям данной фрезы, является то, чтобы в результате заточки по передней поверхности, которая лежит в осевой плоскости фрезы, профиль зубьев сохранялся до почти полного их износа. Поэтому особое внимание уделяется выбору кривой затылования с учётом целого ряда факторов, способствующих совершенствованию процесса обработки. Отмечено, что затылование имеет ряд преимуществ, в сравнении с острой заточкой фрез. Изложен новый подход к проектированию рабочей оснастки для обработки малых колес циклоидной передачи и исследованы теоретически допустимые интервалы изменения задних углов при затыловании. Установлено, что несмотря на преимущества циклоидальной фрезы перед другими типами затылованных фрез в скорости и точности обработки, она имеет один недостаток - довольно малый промежуток применимости на дуге циклоиды. На основе существующих подходов разработан вариант затылования зубьев червячной фрезы по циклоиде The article provides an overview of the industrial production of hob cutters. We show that improving the quality and productivity of gear wheel manufacturing is a necessary condition for reducing the cost and expanding the production of gear wheels at domestic enterprises. The main requirement for the teeth of this cutter is that, as a result of sharpening on the front surface, which lies in the axial plane of the cutter, the profile of the teeth remains sharp until they are almost completely worn out. Therefore, we paid special attention to the choice of the relief curve, taking into account a number of factors that contribute to the improvement of the processing process. We note that relief has a number of advantages in comparison with sharpening of cutters. We give a new approach to the design of working equipment for processing small cycloidal wheels and investigate the theoretically permissible intervals of variation of the rear angles during relief. We established that despite the advantages of a cycloidal cutter over other types of undercut cutters in terms of speed and machining accuracy, it has one drawback - a rather small range of applicability on the cycloid arc. On the basis of existing approaches, we developed a variant of the relief of the teeth of the worm cutter along the cycloid

scholarly journals Improvement on Meshing Stiffness Algorithms of Gear with Peeling

Symmetry ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 609
Author(s):  
Lingli Cui ◽  
Tongtong Liu ◽  
Jinfeng Huang ◽  
Huaqing Wang
Keyword(s):  
Simulation Analysis ◽  
Gear Tooth ◽  
Gear Wheel ◽  
Mesh Stiffness ◽  
Gear Teeth ◽  
Gear Mesh ◽  
Meshing Stiffness ◽  
Involute Gears ◽  
Gear Mesh Stiffness ◽  
Meshing Process

This paper investigates the effect of a gear tooth peeling on meshing stiffness of involute gears. The tooth of the gear wheel is symmetric about the axis, and its symmetry will change after the gear spalling, and its meshing stiffness will also change during the meshing process. On this basis, an analytical model was developed, and based on the energy method a meshing stiffness algorithm for the complete meshing process of single gear teeth with peeling gears was proposed. According to the influence of the change of meshing point relative to the peeling position on the meshing stiffness, this algorithm calculates its stiffness separately. The influence of the peeling sizes on mesh stiffness is studied by simulation analysis. As a very important parameter, the study of gear mesh stiffness is of great significance to the monitoring of working conditions and the prevention of sudden failure of the gear box system.

Evaluation of Mechanical and Thermal Stresses in Polymer Gear Teeth through Simulation Approach

2013 ◽  
Vol 302 ◽  
pp. 468-473 ◽  
Author(s):  
Per Lindholm ◽  
Jian Qin
Keyword(s):  
Thermal Properties ◽  
Thermal Stresses ◽  
Material Selection ◽  
Gear Tooth ◽  
Gear Wheel ◽  
Spur Gear ◽  
Contact Forces ◽  
Mechanical And Thermal Properties ◽  
Gear Mesh ◽  
Tensional Stress

One way to achieve lightweight and lubricant-free drive train is, among others, to convert conventional steel to polymer composite materials. This paper describes a part of this endeavor by taking a spur gear pair as a study object. One of the steel gear wheel is replaced with three different materials including Victrex PEEK 650G, Victrex PEEK 650CA30 and Luvocom PEEK 1105-8165 while keeping the gear geometry unchanged. Mechanical stresses and thermal properties are two major criteria for material selection at this stage. Therefore carbon fiber filled PEEK (Victrex PEEK 650CA30) and PEEK filled with thermal conductive minerals (Luvocom 1105-8165) are chosen to benchmark each of the criterion. The evaluation is done by modeling the gear mesh and analyzing the contact forces and heat generated in the gear tooth. The results show surface temperature on the tooth flanks, root tensional stress and contact pressure during the tooth mesh. The work suggests a guideline of materials selection. Depending on actual application a compromisation between mechanical and thermal properties often needs to be considered within the tolerance boundary in order to obtain optimized results. This work only deals with material selection. Gear design such as optimization of tooth geometry for polymer gears is out of the scope of this study and will not be discussed.

Forming of light-weight gear wheel by plate forging

CIRP Annals ◽  
2016 ◽  
Vol 65 (1) ◽  
pp. 293-296 ◽  
Author(s):  
Z.G. Wang ◽  
K. Hirasawa ◽  
Y. Yoshikawa ◽  
K. Osakada
Keyword(s):  
Gear Wheel ◽  
Light Weight ◽  
Plate Forging

Measurement of Forces and Moments Acting on Aircraft Landing Gear Wheel

2019 ◽  
Author(s):  
Jaroslaw Pytka ◽  
Jerzy Jozwik ◽  
Tomasz Lyszczyk ◽  
Piotr Budzynski ◽  
Jan Laskowski ◽  
...  
Keyword(s):  
Gear Wheel ◽  
Landing Gear ◽  
Aircraft Landing ◽  
Aircraft Landing Gear

scholarly journals Monitoring wear of gear wheel of helicopter transmission using the FAM-C and FDM-A methods

2019 ◽  
Vol 16 ◽  
pp. 184-191
Author(s):  
Andrzej Gębura ◽  
Sylwester Kłysz ◽  
Tomasz Tokarski
Keyword(s):  
Gear Wheel ◽  
Helicopter Transmission
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