Meshing and Bearing Analysis of Nutation Drive with Face Gear

2020 ◽  
Vol 13 (4) ◽  
pp. 352-365
Author(s):  
Guangxin Wang ◽  
Lili Zhu ◽  
Peng Wang ◽  
Jia Deng
Keyword(s):  
Contact Stress ◽  
High Efficiency ◽  
Transmission Ratio ◽  
Contact Strength ◽  
Hertz Contact ◽  
Face Gear ◽  
Compact Structure ◽  
Gear Teeth ◽  
Gear Drive ◽  
Number Of Teeth

Background: Nutation drive is being extensively investigated due to its ability to achieve a high reduction ratio with a compact structure and the potential for low vibration, high efficiency and design flexibility. However, many problems including the difficulty to process the inner bevel gear, less number of teeth in engagement and not being suitable for high-power transmission have restricted its development. Objective: The purpose of this paper is to analyze the contact strength of a patent about a new nutation drive developed based on meshing between two face gears, which has the advantages of both face gear and nutation drive, including large transmission ratio, large coincidence, small size, compact structure and strong bearing capacity. Methods: Based on the meshing principle and basic structure of the nutation face gear drive, the contact strength of nutation face gear transmission is analyzed by the Hertz contact analysis method and FEM method. Results: The maximum stress values of nutation face gear teeth are compared by two methods, which verify the accuracy of Hertz contact analytical method in calculating the contact strength of nutation face gear teeth. Furthermore, nine groups of three-dimensional models for the nutation face gear drive with a transmission ratio of 52 and different cutter parameters are established. Conclusion: The study analyzes the contact stress of fixed and rotary face gears in meshing with planetary face gears, and obtains the distribution law of contact stress and the influence of the number of teeth and parameters of the cutter on the load-carrying capacity.

Contact stress and bending stress calculation model of spur face gear drive based on orthogonal test

2019 ◽  
Vol 26 (4) ◽  
pp. 1055-1065
Author(s):  
Min Jin ◽  
Md Rasedul Islam ◽  
Liu Li ◽  
Mohammad Habibur Rahman
Keyword(s):  
Contact Stress ◽  
Calculation Model ◽  
Orthogonal Test ◽  
Bending Stress ◽  
Face Gear ◽  
Stress Calculation ◽  
Gear Drive

Optimized Face Gear and its Bending Stress Analysis

2011 ◽  
Vol 381 ◽  
pp. 81-85 ◽  
Author(s):  
Zhi Wang ◽  
Rui Liu ◽  
Jia Chun Lin ◽  
Jian Wei Liu ◽  
Li Li Yang
Keyword(s):  
Stress Analysis ◽  
Distribution Area ◽  
Bending Stress ◽  
Analysis Method ◽  
Face Gear ◽  
Gear Teeth ◽  
Number Of Teeth ◽  
Perfect Model ◽  
The Face ◽  
Bending Stresses

According to the simulation of the face gear in UG, the research established the model of face gear. A perfect model that can be used in ANSYS was obtained through reserve modeling. The blending situation of three models of face gear was analyzed in ANSYS. The blending stresses distribution area and the influence on gear teeth bending stresses of different parameters i.e. modulus, width and number of teeth were discussed. And the discipline of the bending stresses under these parameters was got. It provides a new analysis method to research the characteristics of stress of face gear.

Study on the Maximum Contact Stress of Involute Gear Pair with a Small Number of Teeth

2013 ◽  
Vol 456 ◽  
pp. 193-198
Author(s):  
Yan Feng Liu ◽  
Yue Hai Sun ◽  
Qiang Sun ◽  
Jing Xiao
Keyword(s):  
Contact Stress ◽  
Computational Formula ◽  
Gear Pair ◽  
Contact Strength ◽  
Contact Ratio ◽  
Maximum Contact Stress ◽  
Number Of Teeth ◽  
Involute Gear ◽  
Single Tooth ◽  
Maximum Contact

As the traditional calculation formula for contact strength of involute gear pair is not applicable for the calculation of those with small number of the teeth, some researches on the calculation of contact strength of involute gear pairs have been done. The calculation of the contact ratio of involute gear pair with a small number of teeth can confirm that its end face engagement must be of single-tooth mesh, while the research on the actual contacting lines in the meshing zone can find out the precalculated position, computational formula, and strength condition of the maximum contact stress according with the gear pairs with a small number of teeth.

Analysis of Elliptical Rolling Contact Joints in Compression

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Jacob R. Montierth ◽  
Robert H. Todd ◽  
Larry L. Howell
Keyword(s):  
Rolling Contact ◽  
Contact Interface ◽  
Force Transmission ◽  
Hertz Contact ◽  
Surface Geometry ◽  
Low Friction ◽  
High Quality ◽  
Gear Teeth ◽  
Revolute Joints ◽  
Pure Rolling

This paper presents elliptical rolling contact joints in compression as an alternative to circular rolling contact and conventional revolute joints where high quality force transmission—low friction and backlash—with variable output are desired. Parameters specific to the joint and its position are defined in terms of relative link angles and elliptical surface geometry. These relationships allow elliptical rolling contact joints to be incorporated in vector loop summations used in kinematic analysis. Notably, elliptical rolling contact is developed as the more general case of which circular rolling contact is a subset. Elliptical rolling contact joints are shown to offer several benefits over circular rolling contact, including reduced Hertz contact stresses, variable output velocity, maximum use of contact interface by distributing small rotations across surfaces of small curvature, reduced forces on constraining members, and no-slip pure rolling provided by either connecting links or flexures, without the need for gear teeth or friction.

Failure analysis of ACL and Hertz contact stress in human knee

2014 ◽  
Vol 16 (4) ◽  
pp. 317 ◽  
Author(s):  
Bhaskar Kumar Madeti ◽  
Chalamalasetti Srinivasa Rao ◽  
B.S.K. Sundara Siva Rao
Keyword(s):  
Failure Analysis ◽  
Contact Stress ◽  
Hertz Contact ◽  
Human Knee

Geometric design of a face gear drive with a helical pinion

2018 ◽  
Vol 32 (4) ◽  
pp. 1653-1659 ◽  
Author(s):  
Kazumasa Kawasaki ◽  
Isamu Tsuji ◽  
Hiroshi Gunbara
Keyword(s):  
Geometric Design ◽  
Face Gear ◽  
Gear Drive

A new geometry definition and generation method for a face gear meshed with a spur pinion

2021 ◽  
pp. 095440542110609
Author(s):  
Xian-Long Peng
Keyword(s):  
Ruled Surface ◽  
Tooth Surface ◽  
Face Gear ◽  
Absolute Deviation ◽  
Numerical Examples ◽  
Gear Teeth ◽  
The Face ◽  
Geometry Feature ◽  
Tooth Flank ◽  
Straight Lines

The conventional tooth surface of a face gear is difficult to manufacture, and the cutter for the face gear cutting is not uniform even though the parameters of the pinion mating with the face gear slightly change. Based on the analysis of the geometry features of the tooth surface, a new developable ruled surface is defined as the tooth flank of the face gear, for which the most important geometry feature is that the flank could be represented by a family of straight lines, hence it could be generated by a straight-edged cutter. The mathematical models of the new ruled tooth surface, the cutter and the generation method are presented, the deviation between the ruled surface and the conventional surface, the correction of the ruled surface to reduce the deviation are investigated through numerical examples. The manufacturing process is simulated by VERICUT software, and the results demonstrate that even when the principle deviation is added to the machined deviation, the absolute deviation is on the micro-scale. The meshing and contact simulation shows that the new surface could obtain good meshing performance when the number of face gear teeth is greater than three times the number of pinion teeth. This research provides a new method for manufacturing face gears.

Dynamic Analysis of Gear Mesh for Gear Pump Based on ANSYS Workbench

2013 ◽  
Vol 706-708 ◽  
pp. 1290-1293 ◽  
Author(s):  
Lei Zhao ◽  
Qing Qing Lv ◽  
Li Quan Yang
Keyword(s):  
Contact Stress ◽  
Gear Tooth ◽  
Corrosion Damage ◽  
Structure Design ◽  
Gear Pump ◽  
Three Dimension ◽  
Tooth Contact ◽  
Gear Teeth ◽  
Gear Mesh ◽  
Ansys Workbench

Based on the FEA software ANSYS Workbench, the soft body dynamics performance of the gear pump gear mesh of a hydraulic pump company was analyzed. In the practical engineering applications, gear pump gear teeth are effected by alternating pressure in the two working cavity. It can cause pitting corrosion damage for gear tooth, and even cause tooth crack and fracture. At first, a three dimension finite element models of the gear pump gear teeth was established. In the start-up process, the gear pump tooth mesh deputy of tooth contact stress strain and dynamic characteristics of gear teeth was analyzed. Obtain the velocity curves, acceleration curve and tooth contact stress and strain dynamic curves of the tooth of gear pump. Providing a new analysis method for gear pump of gear Structure design and having a practical application value.

Sign in / Sign up

Export Citation Format

Share Document