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Modification method for planetary gear trains with positive addendum modification

A technology of planetary gear train and planetary gear, which is applied in the direction of vehicle gearboxes, gear transmissions, belts/chains/gears, etc., can solve the problems of staying, no modification processing, etc., and achieve improved modification accuracy, improved accuracy, The effect of simplifying the difficulty of analytical calculations

Active Publication Date: 2014-12-17
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology

[0004] The existing gear modification methods are only for a single pair of gears. The modification methods are divided into tooth profile modification and tooth direction modification. Most of the specific modification parameters are based on theoretical calculations and empirical formulas. For complex planetary gears Department of research, there is no ready-made calculation formula and virtual simulation-aided design method to guide the modification process

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  • Modification method for planetary gear trains with positive addendum modification
  • Modification method for planetary gear trains with positive addendum modification
  • Modification method for planetary gear trains with positive addendum modification

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Embodiment Construction

[0030] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Figure 4 Shown is the flow chart of the present invention, by Figure 4 It can be seen that a positive angle displacement planetary gear train modification method provided by the present invention, the specific steps are as follows:

[0032] (1) if figure 1 Shown is the schematic diagram of 3K-II planetary gear transmission, which is composed of figure 1 It can be seen that the planetary gear train is a 3K-II planetary gear transmission. The three-dimensional modeling of the positive angle displacement planetary gear train is carried out using the three-dimensional design software ProE, and the theoretical model of the positive angle displacement planetary gear train is obtained, which is saved as an intermediate format file. as a basis for theoretical calculations. According to the design parameters of the program requirem...

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Abstract

The invention relates to a modification method for planetary gear trains with positive addendum modification, and the planetary gear trains with positive addendum modification are applied to driving mechanisms for spreading solar panels of satellites. Positive addendum modification can increase the output precision, output stiffness and output torque of planetary gears under the condition of not changing the transmission envelope size of the planetary gears, thus enhancing the overall transmission performance of the planetary gears. The modification method for planetary gear trains with positive addendum modification includes establishment of a theoretical three-dimensional model, calculation of theoretical bearing status, making of a modification scheme, optimized design of modification parameters, modification, gear modification inspection, assembly and testing and comparison. When the modification method is applied to planetary gear trains with positive addendum modification for driving mechanisms for spreading solar panels of satellites, the problems of driving mechanisms, including low output precision, weak output stiffness and high transmission noise, are solved, and the requirement of spreading solar panels of satellites is met.

Description

technical field [0001] The invention relates to a modification method of a planetary gear train, in particular to a modification method of a positive angle displacement planetary gear train, which is used for the modification design and manufacture of a positive angle displacement planetary gear train and belongs to the technical field of gear design and manufacture. Background technique [0002] The power sources commonly used in spacecraft drive components are stepper motors and DC servo motors. The commonly used reducers are mostly planetary gears and harmonic reducers, and the commonly used transmission mechanisms are mostly center shaft transmission. With the increasing load of large trusses, mechanical arms and extension arms, etc., the moment of inertia of the load is increasing, and the reduction ratio and output torque of the commonly used harmonic reducer cannot meet the requirements, so planetary gear reduction is required The reducer is used together with the har...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16H55/17F16H55/08
CPCF16H1/28F16H55/08F16H55/17F16H2200/20
Inventor 龚康胡黎明赵林韩建超
Owner BEIJING SATELLITE MFG FACTORY
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