SU1404556A1 - Apparatus for electolytic buildup of abrasive layer on tool - Google Patents

Abstract

The invention relates to electroplating, in particular, to devices for making abrasive tools using electrolytic overgrowing of abrasive grains. The device comprises a housing 1, figured anodes 2 and 3 with current leads 4 and 5, and a bolt 6, a distinctive feature of the device is the presence of an ecreriding element 12 and in the housing 1 in the form of two coaxial cylindrical compartments arranged vertically. Specified otpichie provides first fixing tightly pressed to the cathode layer of abrasive particles in the lower cylindrical compartment, and then overgrowing of particles in the upper compartment, which results in an increase in the concentration of abrasive particles in the electroplating. 2 Il. g

Description

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The invention relates to a galvanized technique, in particular, to devices for the manufacture of an abrasive tool by overgrowing an abrasive powder on the working edge of the tool with a galvanized metal deposit.

The purpose of the invention is to increase the quality of the instrument by increasing the concentration of abrasive particles in the galvanic precipitate,

FIG. 1 shows the proposed device, a cross-section; in fig. 2 - the same, in the position of fixing the abrasive, fragment.

A device for electrolytic overgrowing of an abrasive layer on a figured lapping tool comprises a housing 1, which is an electrolyzer, in the recess of which ring shaped anodes 2 and 3 with current leads 4 and 5 are placed.

The cap 6 is fixed on the guide posts 7 by means of restrictive 8 and clamping 9 nuts. The cathode 11 is fixed in the collar 6 by means of a electrical power supply Yu, the function of which is performed by the preparation of the grinding tool. Coaxially With a hole for fastening the lapping tool in the lid 6, a shielding element 12 with a through axial hole is attached to its lower side.

In the upper compartment of the electrolysis cell, the annular figzfny anode 3 is located; in the lower compartment, the diameter of the anode is smaller than the top-: SRI - anode 2, the upper inner part of which is made in the form of a cylinder, the diameter of which is 1.2-1.00001 element, and the surface of the lower inner part is equidistant to the working surface of the workpiece lapping tool.

The device works as follows.

When preparing the device for operation, annular shaped anodes 2 and 3 are placed in the recess of the housing 1, the configuration of the inner walls of which corresponds to the shape of the working part of the workpiece of the shaped grinding tool. To the anodes are connected the current leads 4, and 5. The volume j formed by the inner walls of the lower figure anode 2 is filled with abrasive material 13. In the landing hole of the rigidly connected shielding

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The piston element 12 and the screw 6 are inserted into the technological part (the shank) of the workpiece of the shaped lapping tool and fixed by screwing in the electrical power supply 10.

The lid 6 assembled with the shielding element and the workpiece of the tool is mounted on the guide posts 7 and fixed in height with the aid of the stop nuts 8.

Fastening the abrasive material is carried out as follows.

The cell is filled with electrolyte. The locking nuts 8 are set to their lowest position. By screwing in the clamping nuts 9, the shielding piston element 12 is inserted into the chamfers of the cylindrical part of the lower ring shaped anode 2. This closes the space formed by the surface of the anode 2, the bottom of the electrolyzer and the end of the element 12 filled with abrasive material and electrolyte. Further tightening the clamping nuts 9, i.e. moving down the shielding piston element 12, pressure is applied to the hard particles of the abrasive material and they are pressed tightly against the working part of the figured lapping tool. The current leads 4 and 10 are connected to the appropriate terminals of the DC source and the metal is electroplated.

To grow the attached abrasive material in an electrolyte-free volume of the electrolyte, the clamping nuts 9 (Fig. 1) are unscrewed to the extreme upper position. With the aid of restrictive nuts 8, the cover 6 rises to a height that ensures that the working part of the tool 11 and the upper figured ring ano0 are located on one DS.

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yes 3. The current lead 4 is disconnected from the + power supply terminal and the power lead 5 is connected.

After overgrowth. the abrasive particles are unscrewed the clamping nuts 9 (Fig. 1), the cover 6 is removed, the current lead 10 is disconnected and the lapping tool 11 is removed.

The uniformity of the abrasive-containing layer on the figure-lapping tool is ensured by using figured annular anodes (Fig. 2).

The use of the proposed device as a whole compared to iz; The well-known technical solutions of the same importance ensure a high concentration of abrasive particles in the working layer of the grinding tool, its uniformity over the entire working surface.

The device can be made multi-seat.

Claims (1)

Invention Formula A device for electrolytic flooding of an abrasive layer on the tool, comprising a housing in which annular anodes with current leads are placed, a cap mounted coaxially with the housing with the possibility of fixing it at different heights, characterized in that, in order to increase the quality of the tool particles in the galvanic sediment, it is equipped with a shielding element made in the form of a rod with a through a longitudinal hole for fastening the products to be machined, coaxially with the body and the lid and rigidly fixed on the bottom of its bottom; the body is made in the form of two coaxial cylindrical compartments located vertically, while the anodes are placed at the base of each section, and the diameter of the lower diameter section of the housing is 1.2-1.00001 of the diameter of the screening element. FIG. 2