Bearing slip vibration noise analysis method based on complex mode analysis theory
A modal analysis, vibration and noise technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as sliding friction, rolling body slipping instability, vibration and noise
Inactive Publication Date: 2021-08-10
QUZHOU UNIV +1
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Problems solved by technology
During the high-speed operation of the main shaft and the inner ring of the bearing, due to the properties of the bearing body and operating conditions, the rolling elements are prone to slip and become unstable, which will cause sliding friction, vibration and noise, and affect the working life of the bearing, the operating status of the machine tool, and the workpiece. The machining accuracy and the workshop working environment have adverse effects
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[0044] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0045] In the present invention, unless stated otherwise, the used orientation words such as "upper and lower" usually refer to the orientation in the state of assembly and use. "Inner and outer" refer to inner and outer relative to the outline of each component itself.
[0046]It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the invention described herein. Furthermore, the terms "comprising" an...
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Abstract
The invention relates to the technical field of bearings, and discloses a bearing slip vibration noise analysis method based on a complex mode analysis theory. The method comprises the steps of taking an angular contact ball bearing running at a high speed as an object, and obtaining the slip vibration noise of the bearing through the complex mode analysis theory under the conditions of different friction coefficients, different pre-tightening forces and different elastic moduli; analyzing the tendency of generating friction vibration noise when the bearing slips; analyzing and predicting friction noise under different working conditions or different material attributes by solving a friction system model of a contact surface of a bearing rolling body and a bearing ring and extracting equation characteristic values; wherein the slipping of the bearing means that the rolling body and the inner ring and / or the outer ring of the bearing displace in the circumferential direction of the bearing. According to the technical scheme, friction noise under different working conditions or different material attributes can be analyzed and predicted, reference is provided for vibration and noise reduction of a bearing system, and the method has important significance.
Description
technical field [0001] The invention relates to the technical field of bearings, in particular to a method for analyzing vibration and noise of bearing slippage based on complex mode analysis theory. Background technique [0002] The research and development of high-end equipment is one of the major tasks of my countrys national economic development. As the production master machine of various industries, high-speed and high-precision CNC machine tools shoulder the important mission of accelerating the take-off of the manufacturing industry. The precision, reliability and stability of its high-speed spindle system are important The core index that determines the performance of the machine tool. As an important supporting component of the machine tool spindle system, high-speed bearings are directly related to the rotation accuracy of the spindle end, processing efficiency, and the quality of the workpiece. Therefore, spindle bearings have become an important object of curren...
Claims
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Login to View More IPC IPC(8): G06F30/20G06F30/17G06F119/10G06F119/14
CPCG06F30/17G06F30/20G06F2119/10G06F2119/14
Inventor 林晓亮邓小雷罗庆周建亮汪志能邱涛宋佳欣柳力豪
Owner QUZHOU UNIV