SU1021588A1 - Method of producing abrasive tool by electroplating - Google Patents

Abstract

i. METHOD OF MANUFACTURING ABRASIVE, GALVANICE TOOL, 8 3 1

Description

The invention relates to the production of abrasive tools, in particular diamond ruling roles-f cov.

A known method of manufacturing an abrasive tool with an electroplating metope, in which abrasive grains are grated onto the tool body and its finishing is made fll. .

The disadvantage of the known method is the complexity of the technol1 and the preparation of the tool, since an abrasive of different grain sizes is used.

The purpose of the invention is to simplify the manufacturing technology of the instrument by using grains of the same amberness.

The goal is achieved by the fact that abrasive grains of one grain are grown on the tool body;

Medium reduced

Diamond grain size according to GOST 9206-80, grain size, micron

and make its finishing, while on the working surface of the case evenly spaced flats are performed with a depth equal to the allowable amount of finishing of the abrasive grain size

The area occupied by the flats is chosen equal to 50-80% of the working surface of the body.

It was established that the depth of the adjustment of the right rollers on diamond stones, produced by electroplating, to ensure the roughness of grinding surfaces at a level Ra ≈ 0.32 μm is determined by the grain size of the diamonds used in the manufacture of rollers, And is equal to the values given in the table

The depth of finishing the working surface of the roller, microns

The amount of jircok on the hull can also be calculated on the following empirical formula

 “. m | .

2Va (d-a)

de p - the number of bald spots on the body, rounded to the whole number, pcs

d is the diameter of the roller body, mm;

a - the size (depth) of flats in the greatest utterance, based on the selected grain of diamonds (see table), w

k is the coefficient determined by the ratio of the bald area to the total surface of the roller body, the numerical values of which fluctuate between 0.5 and 0.8 depending on the tool diameter (with a roller body diameter of 60 mm K 0.5) with d 150 1 "" to "0.8).

When attaching diamonds selected: electro-galvanic granularity

in a way on the surface of the prepared crust roller, they are located along the equidist. If such a roller is subjected to a subsequent adjustment to the appropriate depth (see the table; then, on diamonds located on curvilinear parts of the body, pltshtsatki will be formed, which will ensure the accuracy of the geometric dimensions of grinding

details and need for the roughness of its surface. 4actb diamond grains, located on the flats, will remain with the natural shape of vermins and provide die cutting ability for the roller, and hence the circle, when grinding the part. . . The drawing shows the tool obtained by this method.

The tool consists of a housing 1, on the periphery of which the electroplating

abrasive grains 2 of the same grain size in one layer are fixed by the method. Abrasive | 1rna form a continuous working surface 3. On the working, the surface of the body is made of 4, k6tr {s alternate e; Curved sections 5. At the same time, on curved sections by a galvanic method, blunted diamond grains are fixed, and on the coats, the same rajribBaHH4ecKHM method is zerg on with sharp tops. Lyiok depth ti in the largest section depth: on. finishing the working surface of the role of Ki is equal to 30-35% of the average size. eeren, and the working surface of the blunt grains 20–50% of the total area of the workplace, which is taken by

The production of the driving roller is carried out as follows. Initially, a steel case of the tool is manufactured, on which milling or grinding is done using the depth of the raining of the dusticus in the fine tuning for each of the used grains, such as diamonds. These tatty are given in haejffituie. For example, if a roller is equipped with grit diamonds, then the depth of a piece is 55-60 microns, if the surface is equal to 250-200 / 315/250, 400/315, 500/400, 630/500, then the depth of the piece is equal to 70-75 microns, $ 0- 95 microns, 120-125 microns, 140-145 microns and 185.190 microns. The number of flats on the surface of the hull should be such that They occupy 50-80% of the hull surface. The number of bald spots, depending on the diameter of the roller and the granular diamonds, is determined from the scoop

 -./w: -. . . -.- .. /: 2Va (d-a) /

Then the roller is transferred to the galvanic bath and to the entire surface of the cell, including curviline, that and the Moving sections, (by flashing), by the electroplating method.

Glugs are bonded with diamonds that are attached to it with an electroplating metal, such as nickel. Then, diamond is charged with electrolytic nickel. Diamonds are grown over the entire surface of the hull both along curvilinear hulls and along flats; Then fine-tuning of the 4-core layer is carried out, for example, by grinding diamonds or abrasives.

round circular or

|| urofkpe11shifovalnoy machine.

When fine-tuning, depending on the grain size of the used diamonds, fine-tuning is carried out by an amount b, indicated in the table (for example, for

diamonds 200/160, 250/200, 315/250, 400/315, 500/400, 630/500, finishing is carried out at a value of 55-60, 70-75, 90-95, 120-125, 140-145 and 185- 190 microns are equivalent). As a result, diamonds on the curved surface section of the roller body have diamonds, but on bald spots: there are no platforms.

The need for roller drilling is dictated by the required geometrical parameters of the products being worked, and the roughness of the processed surface. It is not possible to obtain quartz-free water, because errors are introduced in the manufacture of the case, the application of diamonds, their galvanic fixing, as well as due to some difference in grain size within the same grain size of diamonds, which is essential for diamonds on curved sections ( affect the accuracy and roughness of the treated surface),. and non-existence of diamonds found on jaacKax (they do not determine the accuracy of processing, but influence the increase in the cutting ability of the tool). -. :

The work of the roller is carried out by the well-known method of correcting the grinding "(M

on plunge. / When straightening by grinding, the right roller, for example a rabbit of a straight profile, is forced to rotate from an individual drive or from the drive of the front tank of the grinding machine.

The principle of operation can be represented as the sequential cutting of a mat: rial of an abrasive wheel (link -f grain) and a separate grain of the right

rollers which are left on the surface of the circle of the groove. According to the kinematics of the process grinding each grain. should be considered as the formation of grooves on the treated de TcuiH with a flying cutter. JB, as a result of the interaction of diamond grains with abrasive grains of the circle to be corrected, is cutting vertices at a part of the grains, splitting or removing another part of the grains, due to

than the cutting surface, the abrasive wheel is updated. However, if the diamond grains are blunted as a result of the initial melting, the cutting ability of the roller, and accordingly

the circle is reduced. .

In the video, the blunted diamond grains, spread out on the curvilinear sections of the 5th hull, ensure the obtaining of the required accuracy;

the profile of the abrasive wheel, and the sharp-edged grains, located on the bald areas 4, are the swelling of the Nerbochim relief with a high cutting ability. This method allows to simplify

abrasive manufacturing technology

1021588

the tool by using a grain gun is increased by a factor of 2 to 3 in a wet grain. In addition, one hundred percent reduction in power (and the temperature of the rollers, for example, the direct grading parameters of the editing process

profiles made according to the method and thickening of the diamond layer on

Oom compared with the usual (no ly-bald.

Claims (2)

ί. METHOD FOR PRODUCING 'ABRASIVE. GALVANICHE TOOL BY THE FACILITY METHOD, in which abrasive grains are grown on the tool body and fine-tuned, characterized in that, in order to simplify the tool manufacturing technology by growing grains of the same grain size, uniformly arranged flats are performed on the working surface of the body with a depth equal to the allowable amount of finishing of the grown grain size raziva. 2. The method according to p. 1, characterized in that the area photographed by flats is chosen equal to 50-80% of the working surface of the housing. e ω s I