Improvement of Design of Device for Production of Cycloidal Pinion Gear

2021 ◽  
pp. 223-236
Author(s):  
Alexey Lebedev ◽  
Sergey Kireev ◽  
Marina Korchagina ◽  
Vitaly Lubinec
Keyword(s):  
Pinion Gear

scholarly journals Computerized Design and Generation of Low-Noise Helical Gears with Modified Surface Topology

1995 ◽  
Vol 117 (2A) ◽  
pp. 254-261 ◽  
Author(s):  
F. L. Litvin ◽  
N. X. Chen ◽  
J. Lu ◽  
R. F. Handschuh
Keyword(s):  
Gear Tooth ◽  
Error Function ◽  
Transmission Error ◽  
Low Noise ◽  
Surface Topology ◽  
Helical Gears ◽  
Transmission Errors ◽  
Bearing Contact ◽  
Pinion Gear ◽  
Tooth Surfaces

An approach for the design and generation of low-noise helical gears with localized bearing contact is proposed. The approach is applied to double circular arc helical gears and modified involute helical gears. The reduction of noise and vibration is achieved by application of a predesigned parabolic function of transmission errors that is able to absorb a discontinuous linear function of transmission errors caused by misalignment. The localization of the bearing contact is achieved by the mismatch of pinion-gear tooth surfaces. Computerized simulation of meshing and contact of the designed gears demonstrated that the proposed approach will produce a pair of gears that has a parabolic transmission error function even when misalignment is present. Numerical examples for illustration of the developed approach are given.

Experimental verification of methods for calculation of the distribution of forces in planetary pin gearboxes

2020 ◽  
pp. 12-15
Author(s):  
M.M. Ermolaev ◽  
M.N. Zakharov ◽  
YU.V. Sinitsyina
Keyword(s):  
Experimental Verification ◽  
Load Distribution ◽  
Pinion Gear

Various models are considered for calculating the forces at the areas of contact of the satellite with the pinion gears of the planetary pinion gear (PPG). The distributions of forces along the pins for each model are given and an experiment is performed to check the reliability of the analytical dependences for different models. The applicability of these models for calculating the PPG is analyzed. Keywords: planetary pinion gearbox, load distribution, experiment. [email protected]

Study of microstructural degradation of a failed pinion gear at a cement plant

2019 ◽  
Vol 95 ◽  
pp. 117-126 ◽  
Author(s):  
V. Rajinikanth ◽  
M.K. Soni ◽  
B. Mahato ◽  
M. Ananda Rao
Keyword(s):  
Cement Plant ◽  
Microstructural Degradation ◽  
Pinion Gear

Advanced Design and Manufacture of Face-Hobbed Spiral Bevel Gears

2009 ◽  
Author(s):  
V. Simon
Keyword(s):  
Gear Tooth ◽  
Numerical Control ◽  
Mutual Position ◽  
Spiral Bevel Gears ◽  
Bevel Gears ◽  
Pinion Gear ◽  
Tooth Surfaces ◽  
Spiral Bevel ◽  
Tooth Flank ◽  
Crown Gear

The design and advanced manufacture of face-hobbed spiral bevel gears on computer numerical control (CNC) hypoid generating machines is presented. The concept of face-hobbed bevel gear generation by an imaginary generating crown gear is established. In order to reduce the sensitivity of the gear pair to errors in tooth-surfaces and to the mutual position of the mating members, modifications are introduced into the teeth of both members. The lengthwise crowning of teeth is achieved by applying a slightly bigger lengthwise tooth flank curvature of the crown gear generating the concave side of pinion/gear tooth-surfaces, and/or by using tilt angle of the head-cutter in the manufacture of pinion/gear teeth. The tooth profile modification is introduced by the circular profile of the cutting edge of head-cutter blades. An algorithm is developed for the execution of motions on the CNC hypoid generating machine using the relations on the cradle-type machine. The algorithm is based on the condition that since the tool is a rotary surface and the pinion/gear blank is also related to a rotary surface, it is necessary to ensure the same relative position of the head cutter and the pinion on both machines.

The calculation of gear pump porting areas by mathematical means

2014 ◽  
Vol 229 (1) ◽  
pp. 180-188 ◽  
Author(s):  
Martin K Yates
Keyword(s):  
Computer Aided Design ◽  
Gear Pump ◽  
Fuel Delivery ◽  
Lumped Parameter ◽  
Pinion Gear ◽  
Computer Aided ◽  
Gear Pumps ◽  
Aero Engines ◽  
Definition Of ◽  
Aided Design

Twin pinion gear pumps are used widely in industrial hydraulics and as fuel-delivery pumps for aero engines. The kinematics of the pumping action leads to high-flow rates into and out of the meshing gears, and at the high speeds used with aerospace fuel pumps cavitation can occur. One-dimensional ‘lumped parameter’ models are often used to analyse this type of pump. These methods rely on an accurate description of the volume trapped by the meshing teeth and the flow areas during the meshing cycle. Typically, multiple computer-aided design models have to be created to calculate these values during the meshing cycle. This paper presents a mathematical method for calculating these parameters based on a parametric definition of the gear and inlet and outlet porting. Green's theorem is used to allow line integrals around the periphery of the tooth spaces to be used to calculate the volumes and flow areas. Winding numbers are used to calculate the inflow and outflow areas that are formed by the intersection of the trapped volume and the side area porting. The method is validated against computer-aided design model data. This method is well suited for incorporation in an optimisation algorithm since the geometry is defined parametrically.

Mathematical Modeling of the Dynamics of a Two-Mass Gear System with Consideration of Shaft Compliances

2015 ◽  
Vol 770 ◽  
pp. 343-348 ◽  
Author(s):  
Mikhail Kurushin ◽  
Valeriy Balyakin
Keyword(s):  
Mathematical Modeling ◽  
Analytical Solution ◽  
Elastic System ◽  
Gear Wheel ◽  
Optimal Level ◽  
Gear System ◽  
Dynamic Excitation ◽  
Pinion Gear ◽  
Parametric Change ◽  
Meshing Process

Outlined in this study is an analytical solution of the problem of dynamic excitation of two-mass elastic system by parametric change in the stiffness of teeth during the meshing process with consideration of the compliance of shafts. It is shown that the main source of excitation in a gear system is the central pinion gear. Introduction of an optimal level of multi-pitch in the gear wheel lowers vibrations to minimum.

Advanced Manufacture of Spiral Bevel Gears on CNC Hypoid Generating Machine

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
Vilmos V. Simon
Keyword(s):  
Velocity Ratio ◽  
Numerical Control ◽  
Spiral Bevel Gears ◽  
Motion Graphs ◽  
Bevel Gears ◽  
Pinion Gear ◽  
Tool Setting ◽  
Type Machine ◽  
Spiral Bevel ◽  
Fifth Order

An algorithm is developed for the execution of motions on the computer numerical control (CNC) hypoid generating machine using the relations on the cradle-type machine. The algorithm is based on the condition that, since the tool is a rotary surface and the pinion/gear blank is also related to a rotary surface, it is necessary to ensure the same relative position of the head cutter and the pinion on both machines. The algorithm is applied for the execution of motions on the CNC hypoid generator for the manufacture of spiral bevel gears, based on the machine tool setting variation on the cradle-type hypoid generator conducted by optimal polynomial functions up to the fifth-order. By using the corresponding computer program, the motion graphs of the CNC hypoid generator are determined for the manufacture of spiral bevel gears, based on the optimal variation in the velocity ratio in the kinematic scheme and on the variation in the cradle radial setting on a cradle-type generator.

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