RU1821379C - Disk-type cutting tool - Google Patents

Abstract

Usage: in the extraction of natural stone as a tool for cutting. SUMMARY OF THE INVENTION: a disk cutting tool comprises a housing with peripheral radial grooves in which cutting elements are mounted, consisting of a carbide insert and (holders with a threaded hole in the tail part, in which a screw is screwed, each cutting element having two grooves, the surfaces of which interact with the surfaces of the groove of the body, and one of the grooves is made with an inclined surface relative to the longitudinal axis of symmetry of the cutting element, and a screw mounted under each holder th is used to fasten the cutting elements to the housing while adjusting them according to the offset, b.

Description

The invention relates to a device for the extraction of natural stone and can be used as a tool for cutting limestone, tuff and the like.

The purpose of the invention is to increase the reliability of attachment of cutting elements to the housing while improving the quality of their regulation on radial reach ........

In FIG. 1 shows the proposed disk cutting tool, General view: in FIG. 2 - node I in FIG. 1; in FIG. 3 is a section AA in FIG. 2; in FIG. 4 is a section BB in FIG. 2; in FIG. 5 - cutting element: in FIG. 6 - radial groove of the housing .;

The disk cutting tool includes a housing 1 with radial grooves 2 along the periphery, in which the cutting elements are fixed, consisting of carbide inserts 3 and holders 4. Each cutting element is equipped with two rectangular grooves 5 and b with protrusions 7 and 8, the surfaces of which interact respectively with

surfaces 9 and 10 (groove 2 of housing 1). The surface of the groove 5 has a slight inclination relative to the longitudinal axis of symmetry of the holder 4.

The holder 4 of the cutting elements in its rear part has a threaded hole 11. And in the radial grooves 2 under each holder 4 of the cutting elements in the housing 1 there is a hole 12 through which a screw 13 is screwed into the threaded hole 11. The heads 14 of the screws 13 are placed in the sockets 15 in case 1.

Between the base 16 of the groove 2 of the housing 1 and the base 17 of the holder 4 of the cutting elements there is a gap 18. A spring washer is provided against the self-loosening screws 13. nineteen.

The assembly of the disk cutting tool is as follows.

The cutting elements are inserted into the grooves 2 of the housing 1. Then, by screwing the screws 13 (using a wrench) into the threaded hole Its tail part of the holders 4

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jamming of the cutting elements in the grooves 2 of the housing 1 is carried out. With the establishment of the same extension of the cutting elements. The screwing of the screws 13 is stopped. The uniformity of the departure of the cutting elements is controlled using a special template.

The cutting of the cutting elements is made using a special key inserted in the gap 18, after unscrewing the screws 13 from the threaded holes 11. .- -: ;; . . ;:

The proposed technical solution can significantly simplify the design of the cutting tool by reducing wedges, and thereby eliminate the metal consumption for their manufacture. In addition, the use of a screw mounted under the holders of the cutting elements, both the adjustment and the fastening element, increases the reliability of the fastening of the cutting elements to the housing while improving the quality of their adjustment on the outreach (fastening and adjustment of the cutting elements is carried out simultaneously); removes high demands on the accuracy of the manufacture of inclined surfaces of the grooves of the cutting elements and the body; prevents the loss of cutting elements under the action of centrifugal forces and dynamic loads arising during the operation of the tool ..

The implementation of the cutting elements with two grooves increases the contact area

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of these elements with the housing, and thereby increasing the reliability of the connection of the cutting element to the housing.

The supply of the cutting elements with an inclined groove protects them (cutting elements) from radial displacement to the center under the action of the feed forces. ,

The proposed solution to improve the reliability of fastening and the quality of adjustment of the cutting elements on the reach allows to increase the reliability of the tool in operation, to reduce the consumption of expensive tool material (hard alloy) by 1 pm penetration and reduce the cost of mined stone.

SUMMARY OF THE INVENTION A disk cutting tool comprising a housing with radial grooves on the periphery of the disk, in which the cutting elements are mounted with the possibility of radial movement, made with guides and a threaded hole in the rear part, characterized in that, in order to increase the reliability of fastening of the cutting elements to the casing and improving the quality of their adjustment on the flight, one of the side walls of each radial groove is made. inclined relative to the longitudinal axis of symmetry of the disk, with each cutting the guiding element interacting with the inclined wall of the groove has a bevel at an angle equal to the angle of inclination of the groove wall. ...

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