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Parameter optimizing method of high-speed hollow cylindrical roller bearing

A technology of hollow cylinder and roller bearings, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., and can solve the problems of large calculation errors of fatigue life

Active Publication Date: 2018-01-09
DALIAN JIAOTONG UNIVERSITY
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AI Technical Summary

Problems solved by technology

The influence of the centrifugal force of the hollow roller on the bearing load distribution is not considered in the calculation of the fatigue life of the high-speed hollow cylindrical roller bearing in the prior art, which leads to a large error in the calculation of the fatigue life of the high-speed hollow cylindrical roller bearing

Method used

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  • Parameter optimizing method of high-speed hollow cylindrical roller bearing
  • Parameter optimizing method of high-speed hollow cylindrical roller bearing
  • Parameter optimizing method of high-speed hollow cylindrical roller bearing

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Embodiment

[0126] Bearings are standard parts, and its optimized design is more meaningful only for a certain type of bearing. Therefore, according to the working conditions, the working speed of the bearing is determined to be 4000r / min, and the expected fatigue life of the bearing is 1800×10 6 r. The basic parameters of a certain type of bearing used in this example are: inner ring raceway radius R i =27.5mm, outer ring raceway radius R o =37.5mm, the number of rolling elements Z=14, the radius of rolling elements r=5mm, the effective length of rolling elements l=9.6mm.

[0127] figure 1 A schematic diagram of the load distribution of a cylindrical roller bearing.

[0128] figure 2 It is the contact stiffness and deformation index of the hollow cylindrical roller with a radius of r = 5mm and the ring at different hollow degrees. pass figure 2 From the calculation results in , it can be clearly found that the contact stiffness and load deformation index between the hollow cylin...

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Abstract

The invention discloses a parameter optimizing method of a high-speed hollow cylindrical roller bearing. On the basis of an elastic approach calculation formula of a hollow cylindrical roller, with the combination of a relevant contact deformation theory, the load distribution and the fatigue life of the high-speed hollow cylindrical roller bearing are get by using a discretization method; with the combination of a relevant bearing fatigue life theory, the parameter optimizing method of the high-speed hollow cylindrical roller bearing is built, and a theoretical guidance is provided for the application and development of the hollow cylindrical roller bearing in the high-speed aspect.

Description

technical field [0001] The invention relates to the research technical field of hollow cylindrical roller bearings, in particular to a parameter optimization method of high-speed hollow cylindrical roller bearings. Background technique [0002] As a new type of bearing, the hollow cylindrical roller bearing has high rotation accuracy, high rigidity, high limit speed and high load capacity because of its simple preload installation process, and the full complement of rollers and hollow rollers can always be preloaded. Capability and other advantages, especially suitable for high-speed heavy-duty occasions. So far, although domestic and foreign scholars have done a lot of work in the theoretical research of hollow cylindrical roller bearings, and achieved many meaningful results. [0003] Fatigue life is the most important performance of bearings, and the design and application of bearings need to analyze and calculate fatigue life. The pursuit of the longest fatigue life fo...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘彦奎关天民单丽君雷蕾鲍君华
Owner DALIAN JIAOTONG UNIVERSITY
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