Measuring device and method for shafting shaft rod rotational friction torque

Abstract

The invention discloses a device and method for measuring the pivoting friction torque of a shaft lever of a shaft system. The measuring method comprises the steps: controlling a moving end of a shaftlever to perform first movements from an initial position to an end position; acquiring a first mass value measured by a weighing device and a first angle measured by in inclination sensor in each ofthe first movements; controlling the moving end of the shaft lever to perform second movements from the end position to the initial position; acquiring a second mass value measured by the weighing device in each of the second movements; and obtaining a pivoting friction torque value F of the shaft lever according to a formula. The device and method of the invention control a to-be-tested shaft lever to perform a smooth circular movement by using a circular arc difference compensation algorithm, thereby reducing the disturbance of a measuring process. The to-be-tested shaft lever is connectedwith the weighing device through a hook, and there is no need of an additional measuring tool in the to-be-tested shaft lever, thereby avoiding the influence of the measuring tool on a to-be-measuredshaft load, and improving the accuracy of the measurement result.

Description

Technical field [0001] The invention relates to the field of measuring rotational friction torque, in particular to a measuring device and a measuring method for the rotational friction torque of a shaft shaft. Background technique [0002] For many shaft products, the traditional methods of measuring rotational friction torque include three methods: weight method, micro-torque meter measurement method and electronic scale measurement method. When using the weight method to measure the rotational friction torque, the friction torque is measured by hanging a weight on the shaft to be measured. Although this method is simple, it is easy to read the data due to improper operation during measurement. However, the method of measuring friction torque with micro-torque meter and electronic scale can only be read manually, so there is also measurement disturbance error. And the above three measurement methods are generally to install measuring tools inside the shaft to be measured to ac...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a measuring device and method for the rotational friction torque of the shafting shaft to solve the problem of relatively large errors in the measurement results of the rotational frictional torque of shafting products in the prior art

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