Deng Yang,He Xueming,Li Pengchao,et al.Research on a Novel Tooth Profile Design of Harmonic Gears Based on Improved Kinematics and Transient Dynamics[J].Journal of Mechanical Transmission,2023,47(11):37-42.
Deng Yang,He Xueming,Li Pengchao,et al.Research on a Novel Tooth Profile Design of Harmonic Gears Based on Improved Kinematics and Transient Dynamics[J].Journal of Mechanical Transmission,2023,47(11):37-42. DOI: 10.16578/j.issn.1004.2539.2023.11.006.
Research on a Novel Tooth Profile Design of Harmonic Gears Based on Improved Kinematics and Transient Dynamics
To improve the meshing performance of harmonic reducers and the working performance of robots
a novel tooth profile design method for harmonic gears based on the improved kinematics and transient dynamics is proposed. Firstly
based on the characteristics of common tangent double arc tooth profile and S-type tooth profile
a new flexible tooth profile is proposed
which is the combination of S-type tooth profile and common tangent double arc tooth profile. Secondly
the tooth profile of the steel gear is calculated based on the improved kinematics method. Finally
the meshing backlash between the different tooth profiles and the stress of flexsplines without considering plastic deformation are analyzed based on the transient dynamics method. Through comparative analysis
it is found that the new tooth profile without considering plastic deformation has smaller meshing backlash and equivalent stress
the minimum meshing backlash is only 0.003 6 mm
the maximum equivalent stress under the given load condition is only 1 211.6 MPa
which are significantly lower than those of the double circular arc tooth profile flexspline
the S-shaped tooth profile flexspline
and the common tangent double circular arc tooth profile. The novel tooth profile design method can effectively improve the transmission performance of harmonic gears
which lays a theoretical foundation for the design of high-performance harmonic gears.
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