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A bearing fitting tolerance optimization design method and device

A technology of bearing coordination and optimization design, applied in calculation, special data processing applications, instruments, etc., can solve problems such as uneven load, inability to define bearing load state, etc., to maximize the service life

Pending Publication Date: 2018-12-11
CHINA NORTH VEHICLE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of this design method are: (1) simply dividing the three load states of the bearing is difficult to adapt to the fine design of the current transmission system; Define the load state of the bearing before setting the fit tolerance; (3) For the multi-bearing support structure, using the traditional method to design the bearing fit tolerance will easily cause uneven loads between the bearings, and even "competition" with each other

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  • A bearing fitting tolerance optimization design method and device
  • A bearing fitting tolerance optimization design method and device
  • A bearing fitting tolerance optimization design method and device

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Embodiment Construction

[0049] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The present invention provides a method for optimal design of bearing fit tolerances, such as figure 1 shown, including:

[0052] Use the pre-established optimization objective function...

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Abstract

The invention relates to a bearing fitting tolerance optimization design method and device. The method comprises the following steps: obtaining the optimal working clearance of a bearing by using an optimized objective function established in advance; obtaining the clearance change amount required by the bearing interference fit according to the optimal working clearance of the bearing; and determining the fit tolerance between the bearing and the journal / bearing housing according to the clearance change amount required by the bearing interference fit. The technical scheme provided by the invention realizes the best working clearance of the bearing by optimizing the fitting tolerance between the bearing and the journal / bearing housing, thereby realizing the maximum minimum fixed service life of the bearing supported by the shaft system, and providing the design basis for the fine design of the shaft system and the transmission case.

Description

technical field [0001] The invention belongs to the technical field of transmission design, and in particular relates to a method and device for optimizing design of bearing fit tolerances. Background technique [0002] Rolling bearings are the most important rotating supports in the transmission system, featuring small frictional torque, high rotating precision, and easy sealing and maintenance. In most mechanical transmissions, rolling bearings are the most widely used. Rolling bearings are used as the main form of rotating support in industries such as machine tools, aero engines, agricultural machinery, construction machinery, automobiles, and military vehicles. [0003] The working clearance of the rolling bearing is an important factor affecting the service life of the bearing. Under the same load, the size of the working clearance will change the number of loaded rolling elements and the load distribution, which determines the support stiffness of the bearing, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 刘越邹天刚杜明刚王亚飞王明成梁润华孙雪岩侯威
Owner CHINA NORTH VEHICLE RES INST
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