SU1437747A1 - Device for determining friction forces - Google Patents

Abstract

The invention relates to devices for determining friction forces. The aim of the invention is to enhance the functionality. By means of the actuator 7, the carriage 8 with the holder 2 and the counter piece 4 in the direction of the holder 10 with the counter piece is moved 11. The transition of the resting friction on one of the contacts to the sliding friction is recorded using the friction meter, and the ratio of the coefficients of sliding friction on the second The contact is defined as n / m, where m and n are the distances from the center of gravity of the holder 3 to the middle of the counterpiece, respectively, where the slip friction mode is set, and the counterpiece, which is in the friction rest mode, 1 ILO S v

Description

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The invention relates to devices for determining friction forces, the ratio of slip and rest friction coefficients, as well as to demonstrate the transition from rest to slip friction.

The purpose of the invention is to expand the functional capabilities by determining not only the TOLBKO friction training forces, but also the peace training activity forces.

The drawing shows a device for determining the forces of friction and sliding with

The device contains base 1, holders 2 and 3, respectively, of counter-specimen 4 and sample 5, meter 6 of friction force and drive 7 of movement of holder 2, Holder 2 is mounted on {grid 8, connected by means of V0M. flexibly the threads 9 with the drive 7. The second holder 10 of the second counter piece 11 is fastened on the odd 1, the hands 12 are fastened on the holders 2 and 10, and the holder 3 is equipped with a graduated scale 13 of friction force -. The zero division of the latter corresponds to the position of the center of gravity of the holder 3 with samples 5. The holder 3 of the sample 5 is placed on the holders 2 and 10 1 (: ontofrains 4 and 11. The holders 2 and 10 are installed so that the friction surfaces of the samples 4 and 11 are in the same plane

The device works as follows

After installing the base 1 in a horizontal position, the carriage 8 with the holder 2 and the counter piece 4 is placed in the leftmost position. The holder 3 of the sample 5 is mounted on the holders 2 and 10 with the counter pieces 4 and 11ai. By means of the actuator 7, the carriage 8 with the holder 2 and the counter piece are moved 4 in the direction of the holder 10. The excess of the force of friction of rest in the contact of sample 5 with one of the two counter samples 4 and 11 is the friction of rest in this contact due to

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friction changes as a modest reduction in si is recorded by a sprinkler gauge in a relative manner; for example, k 4 decreases the distance by a contra-sample and center of the gang 3 up to a value of g n between the second k 11 (in contact with 5 there is no slippage rest) and tin holders 3 distances

At the contact of the contrabrari by sample 5, the normal pressure is applied, and at the contact of end 11 with the sample 5, the result is a change in the indicated conditions, and the counterframe is next to the contraction), and the friction coefficients are measured. / Sho

Claims (1)

Formula images A device for friction determination, which contains the basics on the holder and counterpiece, drives the continuous movement of one layer and the friction force meter and thereby enhances the functionality by determining not the slip training, but also the rest, it is equipped with a mobile device Replaced on it by the second of the second counterpiece and the arrows fixed on the counterparts, the holder is mounted on the holders and has a scale of force measuring device for the force of friction of the carriage to the carriage and is connected to the pilot movement of Editor A. Ogar Compiled by VODANILOV Tehred A. Kravchuk Proofreader L. Pilipenko 0 five 0 five 0 five varies by sliding friction. An abrupt reduction in the friction force is recorded by the meter 6. As a result of sample 5 being sampled relative to, for example, counterpiece 4, the distance between this counterpiece and the center of gravity of the holder 3 decreases to a value of ha on a scale of 13, while the second counter sample 11 with sample 5 there is no slippage, i.e. there is friction of rest) and the center of gravity of the holder 3 the distance is At contact of counterpiece 4 with sample 5, the normal pressure increases, and at contact of counterpiece 11 with sample 5, it decreases. As a result, at these contacts, the friction modes are changed until counter-sample 4 is located next to the 11 liter counter, 1) the friction coefficient of the friction slide is defined and the rest is defined as the P / Sho ratio. Invention Formula A device for determining friction forces, comprising a base, mounted on the sample and counter sample holders, driving the translational movement of one of the holders and measuring the force of friction, so that, in order to extend the functionality by determining only sliding friction forces, but also friction rest forces, it is equipped with a movable carriage mounted on the base, fixed on it by the second holder of the second counterpiece and indicator arrows attached to the counter-sample holders, The sample holder is mounted on the contra-sample holders and has a friction force scale, and the friction force meter is mounted on the carriage and connected to the drive of translational movement