Measuring apparatus for frictional moment of bearing under different axial loads and rotation speeds

Abstract

The invention relates to a device for measuring friction torque of a bearing under different axial load and revolution speed, comprising a fixing component, an axial loading component, a display component and a measurement component arranged on a stander base, wherein, the measurement component is arranged in a bearing support by an upper bearing and a lower bearing which are the same and fixed on a stander workbench, a bushing on the workbench supports the end face of the bearing outer ring of the lower bearing, so as not to contact the end face of the inner ring, and a loading head presses the end face of the bearing outer ring of the upper bearing. The two same bearings are used for measurement so that the axial load is not directly applied to a transmission shaft and a driving device to influence and damage the operation of the driving device. The voltage of a direct current motor is adjusted by a voltage regulator, so as to adjust the rotate speed of the motor. The axial load is adjusted by rotating a screw. The device can measure larger and different load and bearings with higher and different rotate speed, has wide measurement range which can be adjusted, can meet different requirements of users, and has the advantages of simple structure, easy fabrication, convenient, accurate and intuitive operation and use, wide universality and strong practicability.

Description

technical field [0001] The invention relates to a measuring device for bearing friction torque, in particular to a measuring device for bearing friction torque under different axial loads and rotating speeds. Background technique [0002] Because the friction performance of the bearing is one of the important technical indicators of the dynamic performance of the bearing, it is an important factor that directly affects the service life of the bearing and the reliability and accuracy of the host system where the bearing is used. For this reason, the main engine manufacturers who use bearings require bearing manufacturers to provide accurate technical parameters of bearing friction torque, but the existing domestic equipment cannot meet the requirements of quantitative detection, analysis and performance testing of small and medium-sized bearing friction torque. This measuring device related to solving the problem of measuring bearing friction torque came into being. [0003]...

AI Technical Summary

Problems solved by technology

This measuring instrument cannot measure the frictional moment of the bearing under different axial loads and different speeds

[0004] Patent No. 200720091651.1 "A Gyro Motor Shaft Bearing Friction Torque Test Device", this device can only test special shaft bearings with small loads, and the measurement range is small, and can only use a loading ring to apply an axial force of less than 10N to the shaft bearings. load, this device cannot be used to measure the dynamic friction torque of the bearing under the condition of large axial load and high speed

[0005] Patent application number 200710054386.4 "A non-contact bearing starting friction torque measurement method and measuring instrument", this device is to install the bearing on the main shaft supported by the air bearing, use the cylinder to load, and use the electromagnetic torque as the driving torque to give the measured bearing Apply an axial load to measure the starting friction torque of the bearing from static state to starting operation, because the load loaded on the cylinder is limited by the air bearing, and this device cannot be used to measure the bearing under different axial loads and different speeds dynamic friction torque

[0006] To sum up, each patent has great limitations, its use and measurement range are very small, and it cannot be widely applied.

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