scholarly journals Effect of Profile Modification on Noise in Involute Gear Pair

2021 ◽  
pp. 79-84
Author(s):  
Regaip MENKÜÇ ◽  
Latif Kasım UYSAL ◽  
Tolga TOPGÜL
Keyword(s):  
Gear Pair ◽  
Profile Modification ◽  
Involute Gear

Tool Profile Modification of Hypoid Gear Machined by Duplex Helical Method

2021 ◽  
Author(s):  
Shunxing Wu ◽  
Hongzhi Yan ◽  
Zhiyong Wang ◽  
Rengui Bi ◽  
Jia Li
Keyword(s):  
Geometric Model ◽  
Tooth Surface ◽  
Gear Pair ◽  
Hypoid Gear ◽  
Tooth Contact Analysis ◽  
Edge Contact ◽  
Profile Modification ◽  
Tool Profile ◽  
Tooth Surfaces ◽  
Loaded Tooth Contact Analysis

Abstract For the hypoid gear pair of the heavy-duty vehicle drive axle machined by the duplex helical method, in order to avoid edge contact and stress concentration on the tooth surface, a four-segment tool profile is designed to modify the concave and convex surfaces simultaneously. First, the geometric model of the four-segment tool profile is established. Second, the mathematical model of the duplex helical method based on the four-segment tool profile is established, and the method of solving the tooth surface generated by the connecting points of the four-segment tool profile is given. Finally, the finite element method of loaded tooth contact analysis is used to analyze the meshing performance of the gear pair obtained by the four-segment tool profile modification, and the results are compared with the original gear pair. The results show that after the tooth surfaces are modified, the edge contact of the tooth surfaces are avoided, the stress distribution of the tooth surfaces are improved, the maximum contact stress of the tooth surfaces are reduced, and the fatigue and wear life of the tooth surface are improved.

Calculation of optimum profile modification curve for gear pair based on complex potential method

2019 ◽  
Vol 25 (23-24) ◽  
pp. 2921-2934
Author(s):  
Quancheng Peng ◽  
Tengjiao Lin ◽  
Hesheng Lv
Keyword(s):  
Finite Element ◽  
Mixed Boundary ◽  
Transmission Error ◽  
Power Series Solution ◽  
Conformal Map ◽  
Gear Pair ◽  
Analysis Model ◽  
Profile Modification ◽  
Potential Energy Method ◽  
Optimum Profile

The optimum profile modification curve of a gear pair is usually determined according to the fluctuation minimization of static transmission error (STE). For the calculation of STE, the potential energy method dismisses the correlative tooth deflection induced by gear body elastic coupling effects, and the finite element method requires high calculation cost. In order to simultaneously obtain high calculation accuracy and efficiency, the single tooth deflection is calculated through analytical integration about the Hertz contact pressure based on the conformal map method. The correlative tooth deflection is calculated based on the power series solution of the mixed boundary problem of an elastic annulus. Via combination of deflection compatibility and the force equilibrium condition, a contact analysis model of a spur gear pair is built. Based on the model, the STE is first calculated and compared with the finite element analysis result to verify the model rationality. Then, the optimum profile modification curve which renders constant STE is calculated. For a gear pair with the obtained modification curve, fluctuation of dynamic transmission error also decreases and the optimization effect is verified.

Influence of Tooth Profile Modification on Helical Gear Durability

2002 ◽  
Vol 124 (3) ◽  
pp. 501-510 ◽  
Author(s):  
Parag Wagaj ◽  
Ahmet Kahraman
Keyword(s):  
Three Dimensional ◽  
Helical Gear ◽  
Tooth Profile ◽  
Gear Pair ◽  
Profile Modification ◽  
Mechanics Model ◽  
Tooth Profile Modification ◽  
Bending Stresses ◽  
Helical Gear Pair ◽  
Maximum Stresses

A nonlinear finite element contact mechanics model of a helical gear pair was used to study the effect of intentional tooth profile modifications on durability of helical gear pairs. Both two-dimensional (2D) and three-dimensional (3D) modifications were considered. A detailed parametric study was performed to quantify the changes in the contact and bending stresses as a function of tooth profile modification parameters as compared to an unmodified gear pair baseline. The combined influence of modification parameters and torque transmitted on the maximum stresses is described. Results indicate that both bending and contact stresses of a helical gear pair are increased significantly when 2D modifications are applied, potentially causing an underestimation of the actual stress values when the modifications are not included in stress calculations. When properly selected, 3D modifications cause significantly less stress increases.

scholarly journals Effects of Tooth Modifications on Mesh Characteristics of Intersected Beveloid and Cylindrical Involute Gear Pair with Small Shaft Angle

2019 ◽  
Vol 55 (15) ◽  
pp. 135
Author(s):  
ZHOU Yao ◽  
SONG Chaosheng ◽  
ZHU Caichao ◽  
LIU Siyuan ◽  
NI Gaoxiang ◽  
...  
Keyword(s):  
Gear Pair ◽  
Involute Gear ◽  
Shaft Angle

Optimization of Involute Gear Tooth Profile Modification for Tooth Scoring Reduction

1992 ◽  
Author(s):  
Prokop S'roda ◽  
Ronald L. Huston
Keyword(s):  
Bearing Capacity ◽  
Gear Tooth ◽  
Tooth Profile ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Profile Modification ◽  
Design Charts ◽  
Tooth Profile Modification ◽  
Involute Gear

Abstract This paper presents a method for determining optimum involute tooth profile modifications to reduce scoring and to increase load bearing capacity. The method is based upon Bloks theory of lubrication and wear. The method leads to design charts incorporating common geometrical gearing parameters. An example is presented.

Influence Analysis of Machining Errors on Bearing Capability of Internal Gear Pair

2011 ◽  
Vol 299-300 ◽  
pp. 1142-1145
Author(s):  
Kai Huang ◽  
Yan Dong Zhang
Keyword(s):  
Tooth Profile ◽  
Gear Pair ◽  
Influence Analysis ◽  
Profile Modification ◽  
Pair Model ◽  
Tooth Profile Modification ◽  
Machining Errors ◽  
Internal Gear

The gear pair model with machining errors is constructed based on the software such as Pro/E and ANSYS, and in this basis, the influence analysis about the machining errors on the bearing capability is carried out. The analysis results show that the said influence varies with the increase of load, and however, the tooth profile modification would be more important compared with the machining errors.

Temperature Analysis of Involute Gear Based on Mixed Elastohydrodynamic Lubrication Theory Considering Tribo-Dynamic Behaviors

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Hui L. Dong ◽  
Ji B. Hu ◽  
Xue Y. Li
Keyword(s):  
Contact Area ◽  
Temperature Rise ◽  
Gear Tooth ◽  
Elastohydrodynamic Lubrication ◽  
Gear Pair ◽  
Rolling Velocity ◽  
Involute Gear ◽  
Tooth Width ◽  
Asperity Contacts ◽  
Tooth Flank

An integrated model is proposed for involute gear pair combining the mixed elastodhydrodynamic lubrication (EHL) theory for finite line contact with surface temperature rise equations considering tribo-dynamic loading behaviors. The film stiffness and viscous damping as well as the friction force are taken into account. The surface topography of tooth flank measured by 3D surface profiler is also included to solve the local temperature and pressure distribution in the contact area. The results show that the temperature distributions in different meshing positions along the line of action exhibit dissimilar characteristics due to the varying of dynamic load and the changing slip-to-roll ratio, which denotes the relationship between sliding velocity and rolling velocity on the tooth flank. Besides, the maximum of temperature is likely to appear at different sides of the gear tooth width as the gear pair meshes along the line of action. Moreover, with the increasing surface roughness, the ratio of asperity contacts becomes larger, so more heat generates from the contact area and leads to higher temperature rise.

Profile Modification of Involute Spur Cylindrical Gear Pair Used in Timing Transmission System of Automobile and its Dynamic Simulation

2013 ◽  
Vol 568 ◽  
pp. 123-127 ◽  
Author(s):  
Yan Gang Wei ◽  
Yang Yang ◽  
Ta Jin Lin ◽  
Ming Cheng Gao
Keyword(s):  
Transmission System ◽  
Gear Pair ◽  
Analysis Software ◽  
Dynamic Simulations ◽  
Cylindrical Gear ◽  
Work Condition ◽  
Profile Modification ◽  
Straight Line ◽  
Fea Simulation ◽  
Simulation Results

According to the FEA simulation results of tooth deformations in the mesh process, the profile modification of the involute spur cylindrical gear pairs used in timing transmission system of an automobile are designed based on the methods and theories proposed by domestic and oversea scholars and experts. The dynamic simulations of the gear pairs with straight line modification profile and involute modification profile under different values of modification amounts are done using dynamic analysis software ADAMS. Then it is testified by simulation results that (i)the mesh impact between the gear pairs with involute correction profile is obviously smaller than those between the gear pairs with straight line correction profile and without correction, (ii) optimized value of modification amounts of the gear pairs with involute correction profile is different that of the gear pairs with straight line correction profile under the same work condition.

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