Rolling bearing high-speed vibration testing method

Abstract

The invention relates to a high-speed vibration testing method, in particular, a rolling bearing high-speed vibration testing method. Existing bearing detection methods all adopt low-speed detection, while, the actual working states of bearings are high-speed states, and as a result, the current low-speed detection means cannot meet the requirements for mastering the actual performance of the bearings, and detection data cannot meet the requirements of actual work. The rolling bearing high-speed vibration testing method of the invention includes following five steps that: step One: a high-speed rolling bearing vibration tester is built; step Two: the high-speed rolling bearing vibration tester is detected; step Three: a frequency converter is debugged, and a loading force F is applied; step Four: a band-pass filter is debugged; and step Five: vibration is evaluated. The rolling bearing high-speed vibration testing method of the invention has the advantages of reasonable design, simple operation and accurate and reliable detection results. The operation process of the rolling bearing high-speed vibration testing method simulates the work mode of a bearing in high-speed operation. The rolling bearing high-speed vibration testing method of the invention is used for measuring various kinds of performance of rolling bearings in high-speed rotation.

Description

technical field [0001] The invention specifically relates to a high-speed vibration test method for a rolling bearing. Background technique [0002] In 1993, my country formulated the first bearing industry standard to regulate the vibration performance of bearings: "JB / T7047-93 Technical Conditions for Vibration Acceleration of Rolling Bearings and Deep Groove Ball Bearings", which were revised in 1999 and 2006 respectively. The standard standardizes the design, production and application of bearings, has a major and profound impact on improving the quality of bearings, and has important guiding significance for the activities of the bearing industry. However, the current bearing vibration detection standards, whether it is the national standard or the industry standard, still have insufficient evaluation of the vibration of high-speed bearings. The specific performance is as follows: [0003] 1. There is a certain generality in using the root mean square value alone to ev...

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Problems solved by technology

[0003] 1. There is a certain degree of generality in evaluating the vibration of the bearing by using the root mean square value alone. Even if the peak value is added as an auxiliary detection index, there will be differences in the evaluation of the vibration level of the bearing together.

[0004] 2. The vibration of bearings is different under different working conditions. For bearings with smaller sizes in the national standard, the higher speed used is from 2400r / min to 3600r / min, while the current speed of grinding high-speed electric spindles is as high as 60000r / min , the vibration behavior at high speed is different from that at low speed, so the measured value at low speed cannot represent the vibration at high speed, nor can it represent the vibration when the bearing is a part of the whole machine

The first problem is that the vibration performance of the same batch of bearings is different, and even the phenomenon of excessive vibration of the bearings occurs

The second problem is that the rotational speed of the standard bearing vibration measurement is low, while the rotational speed of the bearing is relatively high in the actual application process. The vibration behavior of the bearing is different at low speed and high speed, which results in good low-speed vibration performance and high-speed vibration performance. The problem of poor vibration performance of the bearing in case

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