SU1490605A1 - Tribometer - Google Patents

Abstract

The invention relates to methods for testing materials and can be used to measure the friction strength of tape materials. The aim of the invention is to enhance the functionality of the tribometer by measuring, together with the tangential, axial frictional force. The main elements of the tribometer are the body 1 in contact with the sensor 18 for measuring the tangential force, and the axially movable holder 7 in contact with the sensor 20 for measuring the axial force of the friction, the tape 8 interacting with the sample 12, the friction forces of which are determined by the tribometer. When the sample 12 in contact with the belt 8 rotates, the case 1 tends to rotate around an axis due to the tangential friction force, which is recorded by the sensor 18. At the same time, the holder 7 under the action of the axial friction force appearing on the contact of the belt 8 and sample 12 moves along studs 2, 3, 4 and 5, and the magnitude of the axial force is recorded by the sensor 20. 2 Il.

Description

one

(21) 4271618 / 25-28

(22) 06/28/87

(46) 06/30/89. Bup. No. 24

(71) Production Association Zhdanovt Zhmash

(72) A.M.Gelman and A.V. Radionenko (53) 620.178.16 (088.8)

(56) USSR Author's Certificate No. 1215020, cl. G 01 N 19/02, 1983.

(54) TRIBOMETER

(57) The invention relates to methods for testing materials and can be used to measure the frictional force of tape materials. The aim of the invention is to expand the functionality of the tribometer by measuring, along with the tangential axial force

P

eleven

(L

4 WITH

Od

about

SP

1B

22

fig 2

nn The main elements of the tribometer are the body 1 in contact with the sensor 18 for measuring the tangential force, and the axially movable holder 7 in contact with the sensor 20 for measuring the axial frictional force, the tape 8 interacting with the sample 12, the frictional forces of which are determined tribometer. When rotating sample 12, the invention relates to the testing of materials and can be used to determine the friction strength of tape materials.

The purpose of the invention is to enhance the functionality of the tribometer by measuring the axial frictional force as well as the tangential force.

FIG. I shows the proposed tribometer, schematic diagram; fig 2 is the same general view.

Tribometer consists of a sample holder

in which are installed

studs 2-5. The studs 2-5 use bushings 6 to install an axially movable axial support 7 of a counterbrack with a contrasing in the form of a tape 8, the tension of which is provided by springs 9 fixed to one of the sleeves 6. The bars 10 serve to connect the tape 8 to the springs 9. Such the same strips of the tape 8 are connected using two earrings P g of one of the sleeves 6 installed by the pin 5 of iia. The free rotation of the sample holder 1 around the axis of the sample 12 is provided by the supports 13, y1: tangential axes 14. To compensate for the tangential friction forceezhdu belt 8 and the specimen 12, is a spring 15 associated with the mechanism 16, the tension. The sample holder 1 is rigidly connected to the frame 17, which is associated with the spring 15 and the sensor 18 for measuring the tangential friction force. To compensate for the autumn friction forces, there are springs P1 19 mounted on pins and spring-loaded on both sides of the holder 7 of the counter-sample. The magnitude of the axial frictional force is measured by the sensor 20, which interacts with the axially movable in the axial direction} 1 of the counter-clearance holder 7. From axial movement

clocking with the tape 8, the body 1 tends to turn around an axis due to the tangential friction force, which is detected by the sensor 18. At the same time, the holder 7 under the action of the axial friction force arising at the contact of the tape 8 and the sample 12, moves along the spikes 2, 3, BUT . and 5, and the magnitude of the axial force is recorded by the sensor 20. 2 Il.

0

five

0

five

The pattern holder 1 is held by a bracket 21 with supports 22, between which it is placed.

Tribometer works as follows.

The sample holder 1 is placed on the sample 12, and the tape 8 with the strips 10 secured at its ends is placed on the sample 12. With one end, the tape 8 is connected with one of the sleeves 6 mounted on the pin 5 with the help of the straps 10 and two earrings I1. The end of the tape 8 is connected with straps 10 with springs 9, which pull it. As a result of this tension, the belt 8 is pressed against the sample 12 with a known force. Sample 12 is set to rotate around its own axis using a drive (not shown), and sensors 18 and 20 measure the tangential and axial frictional forces between the belt 8 and sample 12.

Claims (1)

Invention Formula A tribometer containing a rotatably mounted and spring-loaded specimen holder with supports for installation of a cylindrical specimen in them, a tangential friction force sensor, interacting with the specimen-holder, a contra-sample in the form of a tape, four spikes fixed to a holder, two earrings, installed symmetrically to the axis of the sample holder and connected to one of the studs, two springs connected to the same stud and intended to pull the counterpiece, and a rotation drive of the sample, characterized in that, in order to extend the functionality by measurements along with tangential also and axial friction force, it is equipped with bushings mounted on the corresponding studs and axially spring-loaded, with a counterpiece, rigidly mounted on the bushings, axial force sensor 14906056 friction and a bracket with rolling bearings to prevent axial movement of the sample holder, which is located between them, and two earrings and springs for tensioning the counter piece on one of the sleeves. 22 Fig.G