SU1237335A1 - Method of dressing diamond face-grinding wheels - Google Patents

Description

- 112

The invention relates to electrophysical and electrochemical processing methods and can be used for straightening diamond wheels on conductive links.

The aim of the invention is to reduce the specific consumption of the diamond wheel by displacing the bit trajectory between the guiding electrode and the chip away from the grains.

The drawing shows one of the schemes of the proposed method.

The right electrode-cathode 1, made in the form of a ring (tube) with a face and working surface, is connected to a negative 5 and the end diamond wheel 2 on a conductive bond is connected to the positive pole of the power source. Cathode 1 is installed so that the center-to-center distance A has an optimum value | and the dressing area was located outside the work area 3.

The method is carried out as follows.

Calculate the optimal values of the center-to-center distance and the speed of rotation of the cathode according to dependencies:

, r5 “L. d to vG - 2

0 ,.

BK

V. 0.02 V. A

-2,}

intercenter distance, m; circle diameter, m; circle width, m; diameter of the right electrode-cathode, m;

A, m

t q, mg / mm Note

OJ1 54.5 0.56

As can be seen from the table, the lowest value of specific consumption of diamonds

VNIIPI Order 3230/13

Manuf. Uzhgorod, st. Project, 4

five

AT,

V,

V.

width prlv brush about s :( "; ktr () dacathode, m;

speed of the circle, m / s; speed of the right electrode-cathode, m / s.

Then, the centers of rotation of the cathode 1 and circle 2 are set apart from each other at a distance A, they inform cathode 1 and circle 2 rotation at optimal speeds in mutually opposite directions, working fluid is supplied to the straightening zone, the electrical circuit is closed and the signal is transmitted details 3 and circle editing 2. The necessary editing intensity is established both by adjusting the interelectrode gap between the working surfaces of cathode 1 and circle 2, and by changing the electrical parameters (for example, the voltage in the circuit),

Example. Grinding of incisors from Hexanite-R superhard material (steel-45 holder material) was carried out in a circle of 12A2-45 15010-3 32 AC6 125/100 MB1 100% on modes: V 20 m / s, Snp 1 m / min, P 1, 0 MPa, I ZOA, and - 24V. The working fluid is the electrolyte of the following composition: 5% NaNO., NaNO, o0

five

D Oh, 12 m. Ki-

 7 kg

five

water, 0,007 m

Calculations have shown that the optimal values of A and VKT are A = 0.117 m (V 54.5 m / s) and Ai 0.125 (V ,, 47.8 m / s). The dependence of the specific consumption of diamonds of the circle q on A and Vi is illustrated by the data presented in the table.

- AOPT; V ,, v ,,

q exists when A and Utsu. Corresponds to the calculation

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 Utsu Corresponds to calculated values.

Claims (1)

METHOD FOR EDGING END DIAMOND CIRCUITS on a conductive bundle, including electrolytic dissolution of the bundle and electroerosive removal of chips from the surface of the circle in the zone of its interaction with the annular ruling electrode-cathode, characterized in that, in order to reduce the specific consumption of diamond grains due to the displacement of the discharge paths between the ruling electrode and the chip away from the grains, the ruling electrode, the center of which is offset from the center of the circle, is informed of the rotation opposite to the direction of rotation of the circle, while The distance between the circle and the governing electrode and the rotation speed of the governing electrode are selected according to the following relationships: Ο, 86Ό V _KT > 0.02 V _K -A- ² · ', where A is the center-to-center distance, m; D _x is the diameter of the circle, m; In _to - the width of the circle, m; D _CT - the diameter of the ruling electrode cathode, m; In _kg - the width of the ruling electrode cathode, m; V _K is the speed of the circle, m / s; V _KT is the speed of the ruling cathode electrode, m / s. A