Small harmonic reducer and optimum design method thereof

Abstract

The invention discloses an optimum design method of a small harmonic reducer. The optimum design method includes the steps 1), determining calculating parameters required by the optimum design to obtain target parameters of the optimum design; 2), determining a data range of the calculating parameters and the target parameters to obtain a target parameter solution set in accordance with the data range; 3), subjecting the target parameters in the target parameter solution set which is in accordance with the data range to iterative loop filtering to obtain optimal target parameters; 4), according to the obtained optimal target parameters and the corresponding calculating parameters, calculating to obtain other processing and manufacturing parameters to perform optimum design and manufacturing of the small harmonic reducer. The small harmonic reducer comprises a rigid gear and a flexible wheel which are mutually matched and adopts a wave generator of a double-wave-cam structure; the processing and manufacturing parameters are obtained by the above optimum design method. By means of adding correction factors and performing optimum design adjustment upon key parameters, the small harmonic reducer which is high in structural strength, long in service life and capable of realizing processing and manufacturing is obtained.

Description

technical field [0001] The invention relates to the structural design of a harmonic reducer, in particular to an optimal design method for a small harmonic reducer. Background technique [0002] The standard harmonic reducer has been widely used in the field of steering gear such as missiles, satellites, and unmanned aerial vehicles. The wall thickness of the flexspline of the standard harmonic reducer is σ=(0.01~0.0145)d, where d is the flexspline The diameter of the degree circle, the height of the meshing teeth is h=(1.4~1.6)m, where m is the gear module; however, the existing design method is applied to the design of small harmonic reducers with a diameter of less than 25mm and a torque greater than 5N m At this time, the structural strength of the obtained small harmonic reducer is not enough, and the fatigue fracture of the flexspline, the wear of the tooth surface, and the slippage of the gear or wave generator are prone to occur, and the transmission torque is small,...

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Problems solved by technology

[0002] The standard harmonic reducer has been widely used in the field of steering gear such as missiles, satellites, and unmanned aerial vehicles. The wall thickness of the flexspline of the standard harmonic reducer is σ=(0.01~0.0145)d, where d is the flexspline The diameter of the degree circle, the height of the meshing teeth is h=(1.4~1.6)m, where m is the gear module; however, the existing design method is applied to the design of small harmonic reducers with a diameter of less than 25mm and a torque greater than 5N m At the same time, the structural strength of the obtained small harmonic reducer is not enough, and the fatigue fracture of the flexspline, the wear of the tooth surface, the slippage of the gear or the wave generator are prone to occur, and the transmission torque is small, which cannot meet the actual use requirements.

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