Peeled-off gear meshing model based on meshing stiffness

A meshing stiffness and meshing technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of not considering the influence of tooth root meshing stiffness, not considering the meshing process of peeling gears, etc.

Active Publication Date: 2016-01-06
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

The gear meshing stiffness used in most spalled gear meshing models at present simplifies the gear tooth as a cantilever beam on the base circle, and does not consider the influence of the tooth root on the meshing stiffness
Moreover, the existing meshing models only divide the calculation of peeled gear teeth into two cases: meshing in the peeling area and meshing in the non-flaking area, without considering the actual meshing process of the peeling gear

Method used

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  • Peeled-off gear meshing model based on meshing stiffness
  • Peeled-off gear meshing model based on meshing stiffness
  • Peeled-off gear meshing model based on meshing stiffness

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Embodiment Construction

[0044] The present invention is described in further detail below in conjunction with accompanying drawing:

[0045] A meshing model of spalled gears based on meshing stiffness, including the following steps:

[0046] 1) Since the spalling of gear teeth generally occurs on the surface near the pitch line and close to the tooth root, it is assumed that the spalling occurs at the pitch line of the gear, the spalling area is a B×S rectangular area, and the spalling thickness is t. The spalling diagram is as follows figure 1 shown;

[0047] 2) Considering the influence of the dedendum on the meshing stiffness, the spalled tooth bearing the meshing force is simplified as a cantilever beam on the dedendum circle, and the force analysis is carried out on the spalled tooth. The force diagram is as follows figure 2 shown by figure 2 It can be seen that the transition arc between the base circle and the dedendum circle is regarded as a part of the cantilever beam, thus considering t...

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Abstract

Provided is a peeled-off gear meshing model based on meshing stiffness. Force conditions of peeled-off gear teeth in gear engagement is considered, and a meshing process is divided into three phases, and meshing stiffness of the peeled-off gear teeth in the three meshing phases is respectively calculated. Defects of an existing peeled-off gear model that just two kinds of conditions of a peeled-off meshing region and a non-peeled-off meshing region are considered are overcome. In the model, influence of the root of gear teeth is considered, and a gear tooth is equivalent to a cantilever bam on a root circle, and peeled-off gear meshing stiffness is accurately calculated, and precision is improved, so the more accurate peeled-off gear meshing model is established. The model actually and accurately reflects a meshing process of a peeled-off gear, and the model can be effectively applied in dynamics modeling research of peeled-off gears.

Description

technical field [0001] The invention relates to the field of gear system dynamic modeling, in particular to a spalled gear meshing model based on meshing stiffness. Background technique [0002] The gear system is a common mechanism in the modern machinery industry. It is very necessary to establish the dynamic model of the gear system and study the vibration characteristics of the gear system. Since the time-varying mesh stiffness of gears is the main excitation source of gear vibration, accurate calculation of time-varying mesh stiffness of gears is a key technology in gear dynamics modeling. [0003] Spalling fault is a common fault in gear operation. Accurate calculation of gear mesh stiffness under spalling fault and establishment of spalled gear meshing model are important foundations for studying the vibration response of spalled gears. The gear mesh stiffness used in most spalled gear mesh models at present simplifies the gear tooth as a cantilever beam on the base ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 雷亚国罗希林京刘宗尧卢帆勃
Owner XI AN JIAOTONG UNIV
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