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Computing method for flexible gear minimum teeth number of wave generator external harmonic gear mechanism

A technology of harmonic gears and wave generators, which is applied to components with teeth, belts/chains/gears, hoisting devices, etc., can solve the problem of insufficient basis for determining the number of flex gear teeth, and avoid blindness and calculation. The method is simple and the theoretical basis is sufficient

Inactive Publication Date: 2015-07-29
CHANGZHOU UNIV
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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a calculation method for the minimum number of teeth of the flexspline of the wave generator external harmonic gear mechanism with a simple algorithm and is convenient to use, so as to overcome the problems caused by the deformation of the flexspline and the complexity of stress analysis. Insufficient basis for determining the number of teeth

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  • Computing method for flexible gear minimum teeth number of wave generator external harmonic gear mechanism
  • Computing method for flexible gear minimum teeth number of wave generator external harmonic gear mechanism
  • Computing method for flexible gear minimum teeth number of wave generator external harmonic gear mechanism

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Embodiment Construction

[0026] Combine below figure 1 , figure 2 , taking a double-wave harmonic gear transmission mechanism with an external wave generator and a fixed wave generator, a rigid spline active, and a flexible spline driven as an example, the implementation process of the calculation method for the minimum number of teeth of the flexible spline of the present invention is described in detail.

[0027] 1) Start the system;

[0028] 2) According to the design requirements, formulate the allowable safety factor [n] of the flexspline fatigue strength;

[0029] 3) Use the analogy method to select the material of the flexspline and its heat treatment method;

[0030] 4) Check the bending fatigue limit σ of the flexspline material from the material mechanical properties manual -1 , elastic modulus E;

[0031] 5) According to the principle that the tooth number difference of the harmonic gear transmission should be equal to the integer multiple of the wave number, the tooth number differenc...

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Abstract

The invention relates to a computing method for flexible gear minimum teeth number of a wave generator external harmonic gear mechanism. The method comprises the following steps: (1) setting flexible gear fatigue strength allowable safety coefficient according to the design requirement; (2) selecting flexible gear material and heat treatment mode thereof through analogy method; (3) acquiring bending fatigue limit and elasticity modulus of flexible gear material from material mechanical performance handbook; (4) confirming teeth number difference between the flexible gear and the steel gear; (5) computing minimum admissible value of the flexible gear teeth number; (6) confirming minimum teeth number of flexible gear. Compared with prior art, the computing method for flexible gear minimum teeth number of the wave generator external harmonic gear mechanism fills up the blank on calculation of flexible gear teeth number minimum of wave generator external harmonic gear mechanism of mechanical design handbook and related books, and avoids confirming blindness of flexible gear; the computing process is simple and the computing method can be directly used for computing the matched teeth of flexible gear and steel gear of the wave generator external harmonic gear mechanism.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a method for calculating the minimum number of teeth of a flexible wheel of a wave generator external harmonic gear mechanism. Background technique [0002] The harmonic gear mechanism is mainly composed of three basic components: the flexspline, the rigid spline and the wave generator. The wave generator plays a role in generating and controlling the deformation of the flexspline. The elastic deformation of the flexspline makes the gap between the flexspline and rigid spline Staggered tooth movement, so as to realize the transmission of power and movement. The harmonic gear mechanism has advantages that other gear mechanisms do not have: such as simple structure, large transmission ratio and wide range; the number of teeth meshing at the same time means that the number of teeth that bear the load is large, and the load-bearing capacity is large; the transmission is sta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/06F16H55/08F16H55/17
CPCF16H55/06F16H55/08F16H55/0833F16H55/17
Inventor 祝海林邹旻刘子尧
Owner CHANGZHOU UNIV
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