RU2714270C1 - Method of attaching shoe with set of inserts of marking elements by means of permanent magnets and device for extraction thereof - Google Patents

Abstract

FIELD: foundry.

SUBSTANCE: invention relates to the field of foundry production and can be used for attachment of a shoe with a set of inserts of marking elements for marking a casting in a process casting tool. Preparing in mounting hardware (1) seats for installation of permanent magnets (4), ferromagnetic substrate (5) and shoe (2) with a set of inserts (3) of marking elements. Permanent magnets are installed in blind holes in the above seats. On top of permanent magnets there installed is ferromagnetic substrate and fixed by screw connection. Shoe with a set of inserts of marking elements is installed on the ferromagnetic substrate. Seats are made with depth providing arrangement of pad with set of inserts of marking elements flush with process casting tool. Fastening of marking elements by means of permanent magnets allows reducing labour costs for replacement of shoe and equipping any process equipment with declared marking elements.

EFFECT: enabling casting of casting or part of casting without local increase in thickness of its wall in marking zone.

1 cl, 2 dwg

Description

Technical field

The invention relates to the field of foundry and is intended for fastening and holding pads with a set of inserts of marking elements on technological foundry equipment used in foundry.

State of the art

Currently, foundry uses technological equipment (models, core boxes, etc.) for the manufacture of foundry molds, on which a block with a set of inserts of marking elements is mounted in order to ensure the presence of markings on the casting and / or part during manufacture.

Marking requires frequent replacement, namely, setting the serial number of the part in the manufacture of each mold, changing the manufacturing date on the parts, smelting number, manufacturer’s team, etc.

The shape and dimensions of the pads are made depending on the volume of the required marking, which is established by the technical requirements of the drawing for the casting and / or part, and in some cases in GOST for the manufactured casting and / or part. To install a set of insertion marking elements in the block, the most common method of fastening the type of "dovetail".

Marking design and methods of fastening marking elements are carried out in accordance with the requirements of GOST 21086 "Hourly and replaceable calendars for metal foundry models."

In the foundry, a number of methods for fastening marking elements are widely used on industrial equipment approved for use according to the results of type tests of parts.

A known method of fastening marking elements, including securing the pads by means of a threaded connection on the working surface of technological equipment and the alternate installation in the block of a set of inserts of marking elements.

The disadvantage of this method is that the block with a set of inserts of the marking elements rises above the working surface of the tooling by the maximum thickness of the block, which leads to a local increase in wall thickness on the casting / or part in the marking area, which, for example, is not allowed by the technical requirements of the drawing on olive and / or detail.

There is also known a method of fastening marking elements on tooling, including installing a block with a set of inserts of marking elements in a predetermined recessed seat on the size of the thickness of the block, sufficient to fix it on technological equipment by means of a threaded connection and then installing a plug that holds the set of marking elements in the block .

This method of mounting pads with a set of inserts of marking elements on technological equipment is selected as a prototype.

The disadvantage of this method of attachment is that its use causes additional labor costs for the replacement (installation / dismantling) of the block with a set of inserts of marking elements.

The technical result achieved from the claimed invention is to create a method of attaching pads with a set of inserts of marking elements for marking castings in technological foundry equipment, which reduces labor costs for replacing (mounting / dismounting) pads with a set of inserts of marking elements, as well as the possibility of refitting any existing at the disposal of technological equipment.

An additional technical result achieved from the claimed invention is the ability to perform marking without a local increase in wall thickness in the casting / or part in the marking zone.

Disclosure of the invention.

The invention "The method of mounting pads with a set of inserts marking elements for marking castings in technological foundry tooling" is illustrated by the drawings, which show:

FIG. 1 - image of a fragment of technological equipment with the proposed method of securing the pads with a set of inserts of marking elements for marking the casting in technological foundry equipment;

FIG. 2 is a view of FIG. 1 is a longitudinal section along line AA;

A brief description of the drawings.

In FIG. 1 shows a fragment of technological equipment 1 with installed block 2 with a set of inserts of marking elements 3.

In FIG. 2 shows a cross section of technological equipment 1 along the line AA. The tooling 1 in the area of the seating surface is equipped with several permanent magnets 4, recessed into the blind holes of the seat and a ferromagnetic substrate 5 secured with a screw 6. A shoe 2 with a set of inserts of marking elements 3 is installed flush with its working surface flush with the surface of the tooling 1.

The specified technical result is achieved by the fact that in the proposed method of mounting the pads with a set of inserts of marking elements for marking the castings in the technological foundry equipment, in the manufacture or refinement of the technological equipment 1, markup is first carried out and a seat is prepared with a recess sufficient for installing permanent magnets 4 , ferromagnetic substrate 5 and pads 2 with a set of inserts of marking elements 3. In the blind holes of the seat, set constant At least one magnet 4, on top of the permanent magnets 4, install a ferromagnetic substrate 5, the geometrical dimensions of which coincide with the geometrical dimensions of the seat taking into account the gaps and fix it with a screw 6, and insert the block 2 with the set of inserts of marking elements 3 into the same seat flush with the surface of the tooling 1, while the block 2 is held in place by the force of the permanent magnets 4 installed in the tooling.

The method is as follows. On the surface of the tooling 1, during its manufacture or refinement, marking is performed and the footprint is made, as a rule, by the end mill on a numerically controlled milling machine. The radius of the corners of the seat is being finalized during locksmith operations with a hand tool. Blind holes are made for the installation of permanent magnets 4 and drill threaded holes for mounting the ferromagnetic substrate 5.

Permanent magnets 4 are installed in the blind holes of the seat and fixed with a ferromagnetic substrate 5 by a screw 6. A pad 2 with a set of inserts of marking elements 3 is placed on top of the ferromagnetic substrate 5 in the same seat, flush with the surface of the tooling 1, the force of the permanent magnets magnetizes the block 2 to the ferromagnetic substrate 5.

Permanent magnets 4, installed in the technological equipment 1, provide backlash-free and gap-free attraction of the block 2 with a set of inserts of marking elements 3 to the supporting surface of the ferromagnetic substrate 5, regardless of temperature, position in space, time and any other conditions.

The main requirement to ensure sufficient attraction and fixation of the block 2 with a set of inserts of the marking elements 3 in the tooling 1 when performing technological operations (tilting, tilting, blowing with compressed air, removing the mold) is the condition under which the total force of the permanent magnets 4 prevents displacement or loss of block 2 when exposed to the above external forces.

This method of attaching pads with a set of inserts of marking elements for marking castings in technological foundry tooling has been implemented in technological production and has confirmed its technical and economic efficiency compared to previously used methods.

Claims (1)

A method of attaching pads with a set of inserts of marking elements for marking castings in technological foundry equipment, characterized in that they prepare seats for installing permanent magnets, a ferromagnetic substrate and pads with a set of inserts of marking elements in technological equipment, and permanent magnets are installed in blind holes in the aforementioned seats, on top of the permanent magnets install a ferromagnetic substrate and fix it with a screw connection, on top of the ferromag a block substrate with a set of inserts of marking elements is installed on the thread substrate, while the said seats are carried out with a depth that ensures placement of the block with a set of inserts of marking elements flush with the technological foundry equipment.

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