Device for measuring friction torque of curved groove ball bearing

Abstract

The invention discloses a device for measuring friction torque of a curved groove ball bearing and belongs to the field of mechanical engineering. The device is composed of a motor reducer, gears, a rotor, a base, a chuck, a loading device, and a tension sensor. In order to solve the problem that measuring precision is affected since a pull rope in an existing device for measuring friction torqueof a curved groove ball bearing swings up and down during measuring, a template for processing a curved groove in the outer circle of the original curved groove ball bearing or a curved groove ball bearing of the same type is used as the rotor for use with a phase adjusting mechanism, vertical swing of the curved groove in the outer circle is counteracted by the vertical swing of a curved groove in the template during rotation, the pull rope is kept not swinging up and down during the testing of the friction torque of the curved groove ball bearing, and measuring precision is improved. The device disclosed herein has the advantages that by using the rotor having the same swing amplitude and period as a curved groove ball bearing, vertical swing of the curved groove ball bearing can be eliminated; loading is easy, and adjusting is convenient; the device is simple in structure and low in cost.

Description

technical field [0001] The invention relates to a bearing performance measuring device, belonging to the technical field of mechanical engineering, in particular to a friction torque measuring device of a curved groove ball bearing. Background technique [0002] Rolling bearings are important mechanical basic parts, and are important supporting and rotating parts that transmit and bear loads. It has the advantages of low friction, easy starting, simple lubrication and easy replacement. However, general bearings are used to position shaft parts so that they can rotate flexibly, but cannot produce axial displacement. For the mechanism that needs to be able to perform axial displacement while rotating, such as the movement of squeezing and rubbing rollers (such as peeling machine, peeling machine), the use of universal bearings will make the mechanism very complicated. [0003] Patent No. 201620693072.3 discloses a socket and curved groove ball bearing structure. It changes ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the tension rope swings up and down in the process of measuring the friction torque of the existing curved ball bearing, which affects the measurement accuracy, the present invention uses the original curved groove ball bearing outer ring curved groove processing template as the basic part, and cooperates with the phase adjustment mechanism. Make the up and down swing of the curved groove of the outer ring exactly offset the vertical swing of the curved groove of the template, keep the current tension rope from swinging up and down during the measurement of the friction torque of the curved groove ball bearing, and improve the measurement accuracy

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