Designing method of high-speed ball bearing formed by sandwich integral damping outer circle

Abstract

The invention discloses a designing method of a high-speed ball bearing formed by a sandwich integral damping outer circle, wherein an outer ring structure is improved to be the sandwich integral damping outer circle and consists of an outer-circle inner-ring (4), a damping ring (6) and an outer-circle outer-ring (3), wherein the outer-circle inner-ring is provided with a roller path for rolling a steel ball (2); the outside diameter of the outer-circle inner-ring is matched with the inside diameter of the damping ring; the outer-circle outer-ring is in a circular ring sleeve shape, and the inside diameter of the outer-circle outer-ring is matched with the outside diameter of the damping ring; the inner end surface and the outer end surface of the damping ring are both provided with an inner slot (6.2) and an outer slot (6.1) which are arranged circumferentially and equidistantly; the size of a pocket hole of a cage (5) and the radius of curvature of the roller path of an inner circle (1) are matched with the size of the steel ball with the reduced diameter; and the outline size of the high-speed ball bearing formed by the sandwich integral damping outer circle and the outline size of the standard high-speed ball bearing keep consistent, therefore, the high-speed ball bearing can be used according to an installation way of the standard high-speed ball bearing without influencing the commonality of the high-speed ball bearing formed by the sandwich integral damping outer circle.

Description

Technical field [0001] The invention belongs to the technical field of bearing design, in particular to a design method of a high-speed ball bearing composed of a sandwich-type integral damping outer ring. Background technique [0002] With the development of modern industry, in order to improve the processing efficiency, the working speed of the spindle system of various machines is getting higher and higher, and the high-speed spindle with the speed above 100,000 rpm has been more and more commonly used. [0003] The meaning of critical speed: the rotor of the rotating part will vibrate during operation, the amplitude of the rotor increases with the increase of the speed, and the amplitude reaches the maximum value at a certain speed (that is, the usual resonance). After this speed is exceeded, the amplitude gradually decreases with the increase of the speed, and is stable within a certain range. The speed when the rotor amplitude is the maximum is called the critical speed of th...

AI Technical Summary

Problems solved by technology

However, it is difficult for traditional rolling bearings to change the system stiffness and damping through its own structure. Generally, it is adjusted by adding a damping system to the bearing housing.

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