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Parameter optimization method for hollow cylindrical roller bearing based on load distribution and fatigue life

A hollow cylinder and fatigue life technology, which is applied in the field of fatigue life calculation of hollow cylindrical roller bearings, can solve the problems of not considering the influence situation and large fatigue life error, etc.

Active Publication Date: 2018-02-13
DALIAN JIAOTONG UNIVERSITY
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Problems solved by technology

At present, the fatigue life calculation of hollow cylindrical roller bearings is mostly based on a single roller, and then converted into the fatigue life of the entire bearing, without considering the influence of the load distribution of hollow cylindrical roller bearings on the fatigue life, so the existing method is adopted There is a large error in calculating the fatigue life of hollow cylindrical roller bearings

Method used

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  • Parameter optimization method for hollow cylindrical roller bearing based on load distribution and fatigue life
  • Parameter optimization method for hollow cylindrical roller bearing based on load distribution and fatigue life
  • Parameter optimization method for hollow cylindrical roller bearing based on load distribution and fatigue life

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Embodiment

[0111] 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 expected fatigue life of the bearing is determined to be 1200×10 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.

[0112] figure 1 A schematic diagram of the load distribution of a cylindrical roller bearing.

[0113] 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 cylindrical roller and the ring are different with the h...

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Abstract

The invention discloses a parameter optimization method for a hollow cylindrical roller bearing based on load distribution and the fatigue life. In the method, on the basis of the calculation formulaof the elastic approach amount of a hollow cylindrical roller, in cooperation with the related contact deformation theory, load distribution of the hollow cylindrical roller bearing is solved with thedispersion method, the fatigue-life calculation method of the hollow cylindrical roller bearing is established in cooperation with the related bearing fatigue life theory, and theoretical direction is provided for application and development of the hollow cylindrical roller bearing. Calculated parameter information such as load distribution, the fatigue life and the rolling-body quantity is compared with actual requirement values, and parameters without meeting the requirements are further optimized.

Description

technical field [0001] The invention relates to a fatigue life calculation method, in particular to a fatigue life calculation method of a hollow cylindrical roller bearing. Background technique [0002] 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 for a given size and loading conditions is the goal of general bearing design. Therefore, calculating the fatigue life of bearings is an indispensable content in bearing performance analysis. [0003] 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 ...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2111/06
Inventor 刘彦奎关天民张生芳沙智华
Owner DALIAN JIAOTONG UNIVERSITY
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