Equivalent friction coefficient measurement device and method 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 rolling bearing friction energy consumption characteristic testing, and relates to a rolling bearing equivalent friction coefficient measuring device and method. Background technique [0002] The frictional energy consumption during the operation of the rolling bearing directly affects the heating, temperature rise and wear of the bearing, which in turn affects the performance and life of the rolling bearing. 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, the starting friction torque and the rotating friction torque are respectively used to evaluate the starting friction energy consumption and the rotating friction energy consumption of the rolling bearing, and various types of rolling bearing friction torque me...

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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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