RU210050U1 - DEVICE FOR LOCAL HARDENING - Google Patents

Abstract

The utility model relates to the finishing and hardening treatment of parts by the pneumatic shot blasting method and will find application in any field for local hardening of hard-to-reach areas of the surfaces of parts when restoring the hardened layer. The device for processing parts contains a closed-type air-blast chamber, which contains a chamber body (4) in which a nozzle body (5) with a radius surface (8) adjacent to the nozzle opening (7) is installed. A threaded hole (12) is made at the bottom of the nozzle body (5). In this case, the mixing chamber (6) is fixed in the nozzle body (5). Washers (9) are installed on the chamber body (4) with equal intervals provided by washers (10). An adapter (2) is installed on the upper washer (9), fixed to the body (4) with screws (11). The adapter (2) is made with a thread, on which a replaceable nozzle (3) is installed. The technical result consists in the use of a device for restoring the hardened layer of parts with hard-to-reach places for processing, for example, internal radii, fillet transitions. 2 w.p. f-ly, 4 ill.

Description

The utility model relates to the finishing and hardening processing of parts by the pneumatic shot blasting method and will find application in any field of metalworking for local hardening of hard-to-reach areas of the surfaces of parts, for example, internal radii, fillet transitions when restoring the hardened layer after cleaning the damaged area.

A device for local hardening of parts with balls is known (SU 963833, V24V 39/00, V24S 3/02, publ. balls and elastic nozzle.

A device for processing parts by plastic deformation by the flow of working fluids is known (RU 2755497, B24V 39/00, publ. 09/16/2021), which contains a housing, a storage hopper, a perforated cover, working fluids, upper and lower shutters, an inlet feed channel air, shaped insert and outlet nozzle.

A device is known that is closest to the claimed technical solution (OST 1.52487-81, p. 3, Fig. 1), which is a closed-type pneumoblasting chamber with a reflector and a movable body for hardening holes, while the axis of the hardened hole must be in a vertical position .

The disadvantage of the known devices is that, due to their dimensions, they cannot be used for local hardening of hard-to-reach places of parts when restoring the surface hardened layer, for example, fillet transitions, internal radii, and the use of these devices does not imply their use at different angles to processed surface.

A technical problem not solved in the known device, the solution of which is provided by the claimed utility model, is to create a device for processing hard-to-reach places when restoring a hardened layer of surfaces due to the possibility of installing a device with small dimensions at different angles to the surface to be treated.

The technical result consists in the use of a device, the main element of which is a pneumatic blasting chamber to improve the efficiency and quality of the restoration of the hardened layer of parts with hard-to-reach areas for processing, for example, internal radii, fillet transitions.

To achieve a technical result, a device for processing parts is proposed, containing a closed-type air-blasting chamber, in accordance with the claimed utility model, characterized in that the air-blasting chamber 1 contains a chamber body 4, in which a nozzle body 5 with a radius surface 8 adjacent to the nozzle opening 7 is installed , a threaded hole 12 is made at the bottom of the nozzle body 5, while a mixing chamber 6 is fixed in the nozzle body 5, washers 9 are installed on the chamber body 4 with equal intervals provided by washers 10, and an adapter 2 is installed on the upper washer 9, while the washers 9, 10 and the adapter 2 are fixed on the body 4, and the adapter 2 is made with a thread on which a replaceable nozzle 3 is installed.

When this replaceable nozzle 3 is made of a polymer or composite material.

The use of a device for local hardening, consisting of a pneumatic shot-blasting chamber 1, an adapter 2 made with a thread, on which a replaceable nozzle 3 is installed, increases the efficiency and quality of restoring the hardened layer of parts with hard-to-reach areas for processing, for example, internal radii, fillet transitions.

The device for processing parts is illustrated by drawings:

in fig. 1 - device for local hardening;

in fig. 2 - view A;

in fig. 3 - location of the device for local hardening from top to bottom;

in fig. 4 - location of the device for local hardening from the bottom up.

The device for processing parts consists of an air-blasting chamber 1, an adapter 2 and a replaceable nozzle 3 (Fig. 1).

Pneumatic blasting chamber 1 consists of a chamber body 4, in which a nozzle body 5 is installed with a radius surface 8 adjacent to the nozzle opening 7 to obtain the ejection effect (Fig. 1, 2). Nozzle body 5 can move relative to chamber body 4. At the same time, mixing chamber 6 is fixed in nozzle body 5. Washers 9 are installed on chamber body 4 with equal intervals provided by washers 10, and adapter 2 is installed on upper washer 9. Washers 9, 10 and the adapter 2 is fixed on the body 4 with screws 11. Also at the bottom of the nozzle body 5 there is a threaded hole 12 for connecting the air line.

The upper part of the adapter 2 is made in the form of a thread. A replaceable nozzle 3 made of a polymer or composite material is installed on the adapter 2 to reduce the risk of damage to the workpiece. The replaceable element 3 can be made in different shapes depending on the part to be machined.

Device for processing parts works as follows.

In preparation for surface treatment, the shape of the replaceable nozzle 3 is selected, the configuration of which depends on the shape of the workpiece surface to be machined. Next, metal balls 13 are filled, and the method of filling is selected depending on the location of the air-blast chamber 1. 14 and a replaceable nozzle 3, and then the air-blasting chamber 1 with an adapter 2 is attached. nozzle 3 and the device is installed on the workpiece area 14. Next, an air line is connected to the threaded hole 12 and air is supplied. The air passes through the hole 7 of the nozzle body 5 and enters the mixing chamber 6. When air is supplied, the balls begin to move along the trajectory 15 in the space formed by the air-blasting chamber 1, the adapter 2, the replaceable nozzle 3 and the part 14. In this case, the air leaves the gaps formed by between washers 9 using washers 10, creating a vacuum. The height of the washers 10 is chosen so that they are smaller than the diameters of the applicable balls 13 to prevent them from flying out. The balls move along the trajectory 15, interact with the surface of the part 14 and further due to the rarefaction of air and the shape of the nozzle body 5 with a radius surface 8, which helps to create an ejection effect, move towards the hole 7 in the nozzle body 5 and are picked up by the oncoming air flow from the hole 7 (Fig. 1, 2). Moreover, the pneumatic shot blasting chamber can be installed at different angles to the surface to be treated, because due to ejection, the balls are picked up by the oncoming air, regardless of the location of the chamber. Air pressure, mass of balls, volume of working fluid and processing time are set according to the technological process.

Thus, to restore the hardened layer of parts with hard-to-reach surfaces, the inventive device allows you to process them with the possibility of changing the angle of its installation.

Claims (3)

1. A device for processing parts containing a closed-type air blast chamber, characterized in that the air blast chamber (1) contains a chamber body (4) in which a nozzle body (5) is installed, having a radius surface (8) that is adjacent to the nozzle opening (7), while a threaded hole (12) is made at the bottom of the nozzle body (5), a mixing chamber (6) is fixed in the nozzle body (5), and washers (9) are installed on the chamber body (4) with equal intervals provided by the washers (10), moreover, an adapter (2) is installed on the upper washer (9), while the said washers (9), (10) and the adapter (2) are fixed on the camera body (4), and the adapter (2) is made with a thread, on which the replaceable nozzle (3) is installed. 2. The device according to claim 1, characterized in that the replaceable nozzle (3) is made of a polymeric material. 3. The device according to claim 1, characterized in that the replaceable nozzle (3) is made of a composite material.

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