Device and method for measuring equivalent friction coefficient of rolling bearing

Abstract

The invention discloses an equivalent friction coefficient measurement device and method of a rolling bearing. The equivalent friction coefficient measurement device comprises a machine body, a sliding seat, two air flotation main shaft assemblies, a core shaft, a rotational speed sensor and a data acquisition / processing / calculation / display system, wherein each air flotation main shaft assembly comprises an air flotation main shaft matrix and an air flotation main shaft, one of the air flotation main shaft matrixes is fixedly connected with the machine body, the other one air flotation main shaft matrix is fixedly connected with the sliding seat, the two air flotation main shafts are coaxial, two ends of the core shaft are matched or connected with the two air flotation main shafts by conical surfaces or couplers, an inner circle of a measured rolling bearing is arranged at a shaft shoulder of the core shaft, the rotational speed sensor is used for monitoring angular speeds of the coreshaft or the air floatation main shafts, and the data acquisition / processing / calculation / display system is used for acquiring and processing angular speed signals, monitored by the rotational speed sensor, of the core shaft or the air flotation main shafts and calculating equivalent friction torque and an equivalent friction coefficient of the measured rolling bearing. The measurement device hasthe capability of rapidly and accurately measuring the equivalent friction torque and the equivalent friction coefficient of the rolling bearing.

Description

technical field [0001] The invention belongs to the technical field of testing the friction energy consumption characteristics of rolling bearings, and relates to a measuring device and method for the equivalent friction coefficient of rolling bearings. Background technique [0002] The friction energy consumption during the operation of rolling bearings directly affects the heating, temperature rise and wear of bearings, which in turn affects the performance and life of rolling bearings. The friction energy consumption characteristic of rolling bearing is an inherent characteristic of rolling bearing itself, which reflects the manufacturing quality and cleanliness of rolling bearing to a certain extent. [0003] At this stage, starting friction torque and rolling friction torque are used to evaluate the starting friction energy consumption and rolling friction energy consumption of rolling bearings respectively, and various rolling bearing friction torque measuring devices ...

AI Technical Summary

Problems solved by technology

[0004] Due to the small amplitude of the starting friction torque and rolling friction torque of the rolling bearing under the test conditions, the micro-force or micro-torque sensors used in the existing rolling bearing friction torque measurement devices are obviously insufficient in precision when performing high-precision measurement

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