Bearing friction torque measuring instrument successfully developed

Beijing Landsport instrument innovation uses electromagnetic analytical balance technology, developed a bearing friction torque measuring instrument, provides accurate data for high-precision testing of miniature bearing friction torque. This technology fills the domestic gap and accelerates the user's scientific research.

With the continuous reduction of the gyroscope's volume, the micro-bearings used in the gyroscope have become the main factors affecting the drift of the gyroscope. In order to ensure that the gyroscope can meet the requirements of the index in the case of reduced rotor stability, the dynamic friction torque of the miniature bearings used should be as small as possible. Therefore, the dynamic friction torque of miniature bearings should be tested.

Miniature bearings are used in a wide range of applications and are suitable for products that require high rotational speed, low friction torque, low vibration, and low noise, such as various industrial machines and small rotary machines. Because the diameter of the miniature bearing shaft is very small, it is very difficult to test the friction torque.

Traditional measurement methods are susceptible to interference in the test process. The test results are not stable and the data cannot be recorded automatically. It takes many skilled operators to operate successfully to perform one operation. Such a measurement method obviously has not been able to keep up with the development speed of the bearings. With the ever-increasing contradiction between the rapid development of bearings and the extremely backward detection methods, the development of new types of testing equipment is in vogue.

In response to this situation, Conrad has developed a bearing friction torque measuring instrument and innovatively uses electromagnetic analytical balance technology to achieve high-precision testing of miniature bearing friction torque. During the test, the relative movement between the inner and outer rings of the bearing is caused by the loading device, and the frictional moment between the inner and outer rings during the movement is measured.

The device can measure the starting friction torque of the miniature bearing; at the rotation speed of 2 rpm of the bearing, the maximum friction torque, minimum friction torque and average friction torque of the bearing are measured within two revolutions, and the torque-time curve and torque-turning angle curve are plotted. , speed - time curve.

The entire test process is automated and the test accuracy is high. The torque measurement range is 0~100μN m, the torque measurement error is 1μN m, the rotation speed setting range is 0~4rpm, and the rotation speed measurement accuracy is 0.5%FS.

The equipment has the function of automatic analysis and storage of test data and automatic generation of test reports to facilitate later analysis. Another data management function, query, playback and delete the test data.

The equipment is highly expandable and can be applied to deep groove ball bearings, roller bearings, needle roller bearings, thrust bearings and other types of bearings with a small amount of modifications. It is also suitable for high-precision pure mirror surfaces. Coefficient test.

It was also learned that Beijing Cong Bangbang Instrument was a national high-tech enterprise. Currently, several detection systems have been developed for the bearing industry. In addition to the bearing friction torque measuring instrument, the "Top Roller Bearing Quick Sorting System" and " Bearing Roller Inspection System".