SU916287A1 - Method of manufacturing a grinding paper with variable grain density - Google Patents

Description

The invention relates to the manufacture of abrasive tools on a flexible basis.

A known method of manufacturing a grinding skin with a variable, periodically alternating along its length, density of the distribution of the grinding material, including applying it to a moving base with a bunch.

In the known method, a grinding material with a distribution density of 15 ^to 25% of the thick filling is applied onto the substrate with glue and dried. Then re-apply a layer of glue and cover certain areas with grinding material, followed by fixing with glue. In this way, a grinding sandpaper is obtained, the working layer of which is alternating areas with a dense and sparse embankment of grinding material C1].

The disadvantages of this method are the complexity and complexity

manufacture of skins with a variable density of grain distribution.

The purpose of the invention is to reduce the complexity of manufacturing shlifshkurki.

This goal is achieved by the fact that the application of grinding materials produced over the edge of the vibroplane, which is reported harmonic rectilinear oscillations with a frequency determined from the condition

where G is the frequency of harmonic rectilinear vibrations vibro1

planes, -;

’Min’

V - the speed of movement of the base, m / min;

H - step of the periodic change in the distribution density of the grinding material, m

To obtain a given step of a periodic change in the density of the distribution of the grinding material at a constant speed basis, the oscillation frequency of the plane is determined

V

from the indicated relation '= mT · n

3 916287 4

Rial in one step, which significantly removes labor costs.

five

Claims (2)

Claim When vibrating the plane vibrates, the grinding material moves across its surface periodically, in certain portions is dropped over its edge, which allows the material to be applied non-uniformly with a periodic change in the distribution density along the substrate. For example, in the manufacture of sanding cloth on the basis of the fabric (binding glue core) polished - ¹⁵ material 14A12N is fed to the base mechanically. The base speed is 15 m / min. To obtain a step of a periodic change in the distribution density of the ground sections of the material based on 0.025 m, the oscillation frequency of the vibroplane is 600 oscillations per minute. Under such conditions the grinding material is distributed on the basis of ²⁵ alternating with hydrochloric application phase density of 20 to 100% of normal. The proposed method of manufacturing shlifshkurki with variable density. distribution of the grinding material on a ³⁰ basis allows you to apply the grinder1. A method of making grinding skins with a variable density of the Grain, in which a binder is applied to the moving base of the skins and the abrasive grains in it differ from that, in order to reduce labor intensity, the abrasive grains are applied through the edge of the vibroplane, which is reported harmonic rectilinear oscillations. 2. The method according to π.1, about tl and tea 14 and nd with the fact that the oscillation frequency ί is determined from the condition where V is the speed of movement of the base, m / min; H - step of periodic changes in the density distribution of abrasive grains, m