Researching And Producing The Device For Monitoring The State Of High Speed Rolling Bearings With Integrated Sensors

The rolling bearing is one of the most important mechanical parts in the High-Speed spindle system, and is vulnerable to damage. Because of the awful condition, the faults can result in abnormal vibration and noise of machines, equipment damage and personal casualty. Therefore, it is important to study fault diagnosis of rolling bearings. For improving the veracity and the S/N Ratio of the bearing's signal which the sensor picked up, Integration was been exerted, actualizing the integration between bearings and sensors, making the distance from fault point to testpoint shorter and the signal more accurate. According the potential bearing faults, applying appropriate data processing algorithms, the occurrence and extent of bearing faults can be determined This way advanced the reliability of fault diagnosis of rolling bearings. It possessed the characteristic of forgiving, complementarity and real-timing.It accomplished the mission of choos ing and installing sensors, demarcating the sensors, and integrated design of the bearings and sensors. It used the ANSYS software to analysed the strengths and weaknesses of the integrated design. Later it designed data acquisition system on the basis of the different characteristics of the sensor. A Visual Basic software was developed, which can complete data acquisition with configuration software(Kingview 6.5)together.In this paper, the data processing algorithm used to analyse in time-domain and frequency-domain was introduced according to the failure mechanism and signal characteristic. A MATLAB program which can accomplish corresponding function was developed. Using this, it made the system could monitor bearing's state and diagnose failures.At last, it carried abundant experiments through to examine the device. One of the intention was that by means of the bad bearing which was damaged with a special failure, testing the system can judge the type of the bearing rightly or not. Another is that by means of the contrast experiments between bad bearing and well bearing, test ing the reliability and practicability of the system. Changing the rev and loading, it taken relevant experiments, knew how the vibration, strain and temperature changed, and drawn corresponding conclusions.