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Numerical analysis method for slip of rolling body of retainer-free ball bearing

A numerical analysis and rolling element technology, applied in CAD numerical modeling, electrical digital data processing, instruments, etc., can solve the problems that the sliding speed of rolling elements cannot be obtained through experimental means, and the sliding phenomenon of rolling elements cannot be determined.

Active Publication Date: 2022-07-01
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the accurate sliding speed of the rolling element cannot be obtained through test means, and the slipping phenomenon of the rolling element cannot be determined, the present invention provides a rolling element without cage The numerical analysis method of slippage, taking the ball bearing without cage as the object, by establishing the dynamic model of the rolling body of the ball bearing without cage and solving it, under different bearing loads and different bearing speeds, the rolling body of the ball bearing without cage will slip Carry out analysis to determine the slipping phenomenon of rolling elements

Method used

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  • Numerical analysis method for slip of rolling body of retainer-free ball bearing
  • Numerical analysis method for slip of rolling body of retainer-free ball bearing
  • Numerical analysis method for slip of rolling body of retainer-free ball bearing

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Embodiment Construction

[0046] The present invention will now be described in further detail.

[0047] First, analyze the force and motion of the rolling elements, such as figure 2As shown, first analyze the force of a single rolling element (the jth ball), the inner ring of the bearing will be subjected to the load applied from the main shaft during operation, and the loaded inner ring will exert a downward force on the rolling element, so the rolling element In the normal direction of the contact point with the inner and outer rings, the pressure of the inner ring (N i ) and the reaction force of the outer ring on the rolling elements (N o ). Since the rolling elements move relative to the inner and outer rings in the bearing, and the rolling elements and the inner and outer rings are in contact with each other, the rolling elements will be subject to friction from the inner and outer rings in the tangential direction of the contact point with the inner and outer rings. Force (F o and F i ). ...

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Abstract

The invention discloses a numerical analysis method for slip of a rolling body of a retainer-free ball bearing, which comprises the following steps of: by taking the retainer-free ball bearing as an object, analyzing slip of the rolling body of the retainer-free ball bearing under different bearing loads and different bearing rotating speeds by establishing and solving a kinetic model of the rolling body of the retainer-free ball bearing; and the slipping phenomenon of the rolling body is determined. The problem that the slipping phenomenon of the rolling body cannot be judged due to the fact that the accurate rolling body slipping speed cannot be obtained through a test means at present is solved.

Description

technical field [0001] The invention relates to the technical field of ball bearings without cages, in particular to a numerical analysis method for the slippage of rolling elements of ball bearings without cages. Background technique [0002] The cageless ball bearing is one of the important parts in the magnetic suspension bearing system. It is an auxiliary bearing in the magnetic suspension bearing and plays the role of protecting the main shaft; the inner ring of the cageless ball bearing is connected to the main shaft, and the outer ring of the cageless ball bearing is connected to the main shaft. The bearing seat is connected, and there are rolling elements between the inner and outer rings. When the ball bearing without a cage is not working, the rolling elements are mainly accumulated in the lower half of the bearing, and the rolling elements are in contact with each other; ), the main shaft will fall to the inner ring of the ball bearing without cage and drive it to...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/20G06F111/10G06F119/14
CPCG06F30/17G06F30/20G06F2111/10G06F2119/14
Inventor 赵彦玲武传旺周港苑学雨
Owner HARBIN UNIV OF SCI & TECH
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