Frictional force measuring method and frictional force measuring device for sliding block on horizontal linear guide rail

Abstract

The invention discloses a frictional force measuring method for a sliding block on a horizontal linear guide rail. The frictional force measuring method includes that a pulley presses a hanging rope and drives the hanging rope to move together, the hanging rope receives the pressure from the pulley, an included angle theta is formed between the hanging rope and a plumb line, and the horizontal component of the pressure of the pulley to the hanging rope is Gsin theta; the pulley is controlled to move along the direction of the horizontal linear guide rail constantly, the sliding block moves along the offset direction of a weight when a certain numerical value is reached, the net offset of the weight when the sliding block starts to slide is recorded, an included angle theta' is formed between the hanging rope and the plumb line at the moment, the horizontal component of the pressure of the pulley to the hanging rope at the moment is calculated to be Gsin theta', and the force value is identical to the frictional force value of the sliding block. The frictional force measuring method has the advantages of simplicity, capability of rapidly measuring the frictional force between the sliding block and the contact surface thereof, high measuring result accuracy, high measuring efficiency and applicability to frictional force measurement of sliding blocks in the high-accuracy hanging field.

Description

technical field [0001] The invention relates to the field of measurement of frictional force, and more specifically relates to a method and device for measuring frictional force of a slider on a horizontal linear guide rail. Background technique [0002] Friction refers to the force that hinders the relative motion of objects. The direction of friction is opposite to the direction of relative motion (or relative motion trend) of objects. Friction is divided into three types: static friction, rolling friction and sliding friction. When the surface of an object slides, there is friction between the contact surfaces that hinders their relative motion, which is called sliding friction. The magnitude of the sliding friction is related to the roughness of the contact surface and the pressure. The greater the pressure, the rougher the contact surface of the object, and the greater the sliding friction. [0003] In the field of ultra-precision hanging, especially in the field of ha...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing friction force measurement method is not suitable for the measurement of the friction force of the slider in the field of high-precision suspension, and provides a method and device for measuring the friction force of the slider on the horizontal linear guide rail , used to measure the friction force of the slider on the horizontal linear guide rail, and the measurement accuracy is very high, suitable for the friction measurement of the slider in the field of high-precision suspension

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