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, an air floating main shaft assembly, a core shaft, a sliding table, a bearing block, a rotating speed sensor and a data acquiring/processing/calculating/displaying system. The air floating main shaft assemblycomprises an air floating main shaft base body and an air floating main shaft. The air floating main shaft base body is fixedly connected with the machine body. The core shaft is fittingly connectedwith the air floating main shaft through a conical surface. The inner ring of a to-be-tested rolling bearing is arranged on the shaft shoulder of the core shaft. The outer ring of the to-be-tested rolling bearing is installed on the retaining shoulder of the bearing block. The bearing block is fixedly connected with the sliding table. The sliding table is capable of horizontally moving along the axial direction of the air floatation main shaft under the guiding effect of a guide component. The data acquiring/processing/calculating/displaying system is used for acquiring and processing the angular velocity signals of the core shaft or the air floating main shaft monitored by the rotating speed sensor, and then calculating the equivalent friction torque and the equivalent friction coefficient of the to-be-tested rolling bearing. The measurement device has the capability of rapidly and precisely 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 ...

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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-

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