Equalization about the Tooth Bearing Area for the Shaft Angle of Gear Coupling

Hakozaki, Yoshihide; Shimachi, Shigeyuki

doi:10.1299/kikaic.73.594

Cited by 5 publications

(2 citation statements)

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“…Using the method to calculate clearance proposed by Alfares, Zhao et al (2017) compared the contact characteristics of four types of crowning curves, and discovered that the minimum clearance distribution of the crown gear coupling with three-segment circular arcs is more gentle than the others. To obtain a larger contact area and a smaller clearance related to the backlash-hit noise between teeth, Hakozaki and Shimachi (2004) adjusted the radius of curvature along the hub tooth width direction to modify the contact area of the crown gear coupling with angular misalignment. Based on the theories of differential geometry and gear mesh, Guan et al (2018) accomplished geometrical mathematical models, proposed a tooth contact analysis technique, and discussed the effects of misalignment angle and crowning on the minimum circumferential clearance, and contact path for this special device.…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of contact characteristics of crown gear coupling with angular misalignment

Guan

Chen

et al. 2021

JAMDSM

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Crown gear couplings are commonly applied to transfer rotary motion and torsion from one rotating component to another under a certain misalignment angle. While computational models for contact analysis have recently been proposed, there is no validated contact analysis model of crown gear coupling with angular misalignment due to lack of experimental data. Accordingly, this study proposes to establish an extensive experimental database on contact characteristics of the conventional and novel crown gear couplings with different misalignment angles. A dedicated test rig, which can adjust misalignment angle, is designed and set up. A test matrix covering various misalignment angle conditions is executed in order to form a meshing contact database for crown gear coupling. The experimental data illustrates the variety of contact positions on the hub tooth surface caused by rotational position and misalignment angle. Simulation results obtained by loaded tooth contact analysis are compared to the experimental results for the conventional and novel crown gear couplings with different misalignment angles. The results show that the simulation model used to calculate contact analysis is effective, and the meshing performance of the innovative hub tooth profile is better than that of the conventional one.

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Section: Introductionmentioning

confidence: 99%

An experimental investigation of contact characteristics of crown gear coupling with angular misalignment

Guan

Chen

et al. 2021

JAMDSM

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“…Yi 19 derived the equation of the nonconjugate surface of crown gear with the crown curve of a circular arc, and calculated contact points by solving the equations of continuous tangency using an optimization method. Hakozaki 20 changed the curvature along the tooth width to modify the bearing area for angular misalignment. A larger bearing area and a smaller tooth gap were obtained by the method, which were related to the gear tooth backlash-hit noise.…”

Section: Introductionmentioning

confidence: 99%

Effects of misalignment and crowning on contact characteristics of crown gear coupling

Guan

Fang

Yang

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Although crown gear couplings are widely used in rotating machinery, very little is known about their contact behavior and load distribution characteristics. In this study, the manufacturing methods are presented for crown gear coupling. Complete geometrical mathematical models from tools to crown gear coupling are proposed based on the theories of differential geometry and gear mesh. Then, a high-fidelity finite element model verified by tooth contact analysis under light load is employed to investigate load distribution along the crown gear coupling interfaces. The effects of meshing position, torque, and angular misalignment are investigated on load distributions along with crowning amount depending on the displacement circle radius. Finally, it is observed that when the contact position is 0.2 times the width of the tooth, the radius of the displacement circle is the optimal result for the performance of the crown gear coupling.

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