A Meshing Modeling Method of Spalled Gears Based on Mesh 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 the meshing stiffness of the gear tooth root, and the meshing process of the peeling gear, etc., to improve the accuracy. Effect

Active Publication Date: 2018-03-16
XI AN JIAOTONG UNIV
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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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  • A Meshing Modeling Method of Spalled Gears Based on Mesh Stiffness
  • A Meshing Modeling Method of Spalled Gears Based on Mesh Stiffness
  • A Meshing Modeling Method of Spalled Gears Based on Mesh Stiffness

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Embodiment Construction

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

[0045] A method for modeling spalled gear meshing based on meshing stiffness, comprising 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 co...

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Abstract

A meshing model of spalled gears based on meshing stiffness, considering the force of spalled gear teeth during gear meshing, divides the meshing process into three stages, and calculates the meshing stiffness of spalled gear teeth in three meshing stages respectively, to overcome The disadvantages of the existing spalling gear model that only considers the spalling meshing area and the non-flaking meshing area are considered; at the same time, the influence of the gear tooth root is considered, and the gear tooth is equivalent to a cantilever beam on the root circle, and the spalling gear is accurately calculated. The meshing stiffness of the gear teeth improves the precision, and establishes a more accurate meshing model of the peeling gear. The invention truly and accurately reflects the meshing process of the peeling gear, and can be effectively applied to the dynamic modeling research of the peeling gear.

Description

technical field [0001] The invention relates to the field of gear system dynamics modeling, in particular to a method for meshing modeling of spalled gears 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 cantileve...

Claims

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Application Information

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Patent Type & Authority Patents(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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