SU1632741A1 - Nozzie adapter - Google Patents

Abstract

The invention relates to machine tool building, to nozzle nozzles for supplying electrically conductive coolant (coolant). The aim of the invention is to increase the efficiency of supply (coolant). 20% of the amount of the mixture of abrasive grains 3 coolant, the passage through the body is activated, while the activation of the coolant is provided additionally by mixing chips and grains 3 when exposed to the body 1 vibration from transducer 6 and source 5 ultrasonic vibrations 1 or less

Description

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The invention relates to ;; stankosgroe-:: pi. namely, to nozzle nozzles for VUHM electrically conductive smzzochno- | shmhh r- .ddkostvy (coolant),

The aim of the invention is to increase the efficiency of coolant.

-. The drawing shows a nozzle diagram.

Nzeadok contains a housing I connected to an electrically conductive coolant supply system (not shown), an electroplating system placed therein 2 of a mix of equal quantities of different chips and abrasive grains 3, a nozzle 4 keeper 5 ultrasonic vibrations and 6 associated with source 5 and enclosing housing 1.

Nozzles works as follows.

A galvanic system 2 of a mixture of equal quantities of chips and abrasive grains 3, the number of which is not more than 20% of the total amount of the mixture of chips, is placed in the housing 1.

Then, conductive coolant through the housing 1 between the metal particle and the abrasive grain 3 1 n cutting zone is started.

During the supply of coolant, chips and grains are mixed by applying oscillations from source 5 through the converter b to housing 1. When electrically conductive coolant passes through the nozzles between the particles of metals Me I and Me P, an electrical galvanic current flows, which leads to the activation of coolant and tries- iug; -r.: io effectiveness of its action in zones 1 / :::;. an1ll

The activation of conductive coolant with a chigo current is carried out by dyum lu-zg /. On the first field path, an electroplating current near the anode produces hydrogen peroxide H20a, which is a chemically unstable compound and decomposes to form highly reactive C / Y atomic oxygen. The impact of atomic oxygen from the intermediate stages of radical-chain reactions on the molecules of the components of the coolant increases their kinematic and potential energy, leading to rupture of rs-trimolecular bonds. Owing to jrnro, new, reactionary forms are formed. coolant components that enhance the effect of chemical lubrication during cutting.

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In the nozzle, the magnitude and density of the electroplating current increases due to an increase in the number of electrodes - chip mastic and a more developed surface: that provides a higher degree of coolant activation. This is also promoted by more intensive anodic dissipation of the more electrically positive me- dium of the galvanic couple due to the fact that the anodic dissolution occurs particularly intensively in the places of the electrodes that have the highest current density — edges, tops, burrs, and other unevennesses that are abundantly present. particles of metal shavings. In addition, chips have a large number of cracks, microcracks, delamination and other defects,

This allows the coolant to electrochemically interact with the electrode material not only on the surface, but also in the depth of the chips.

The increase in the degree of activation of coolant contributes to the continuous mixing of particles of chips and abrasive grains by the action of the flow of coolant and vibrations under action of ultrasound from transducer 6.

When moving relative to the particle and nyv.KH particles, they collide with each other and with abrasive grains 3 and in the places of collisions the surface of the chip particles is released from the passivating films, which ensures that the intensity of the electroplating and anodic dissolution of the metal is reduced.

In addition, the ultrasonic vibrations directly affecting the fluid, ... and the mixing effects will also be .v. j to increase the level of coolant.

The use of a galvanic system of 2 y, 5 mixtures of brass and steel 3 chips with abrasive grains of 14А40 with an emulsion of 5% emulsion showed a high efficiency of coolant through nozzles.

Claims (1)

Invention A nozzle nozzle comprising a housing associated with an electrically conductive coolant supply system (coolant), and an electrode galvanic system of various metals located therein, characterized in that, in order to increase the efficiency of the coolant supply, the nozzles are provided with an associated with the case, a source of ultrasonic vibrations, and the electroplating system is made in the form of a mixture of equal quantities of metal shavings and abrasive grains in a volume of up to 20% of the volume of the metal mixture.