Cutter for mining machinery

FIELD: mining equipment.

SUBSTANCE: the invention relates to rock-cutting equipment, in particular, to rock cutters for tunneling and getting machines. The cutter includes cylindrical holder and the operating head with conic section fitted with hard-alloy insert and reinforcing element in the form of hard-alloy rings with ring made of less dense material between them. The operating head of the cutter is has a rotating box with side conic surface on the side of hard-alloy insert, which is installed on the holder. Furthermore, the hard-alloy rings and ring spacers are fixed on the box, their contacting faces have spline keys and corresponding slots, and the side conic surface is fitted with spiral or inclined blades, reinforced with wear-proof material.

EFFECT: increased operation effectiveness through increasing operation capacity of ring spacers.

2 cl, 3 dwg

 

The invention relates to a rock cutting tool, namely the cutters for rock failure tunneling and mining machines.

Known cutter for mining machines comprising a cylindrical shank and a working cylinder with a conical part, are equipped with a carbide insert and the reinforcing element (see French patent No. 2403447, CL IS 25/38, 1978).

The main disadvantage of this cutter is its low wear resistance.

Closest to the proposed to the technical essence and the achieved result is a cutter for mining machines comprising a cylindrical shank and a working cylinder with a conical part, are equipped with a carbide insert and the reinforcing element in the form of carbide rings, between which are interacting with them ring from a material of lesser hardness (see USSR author's certificate No. 1314042, CL IS 25/38, 1978).

The disadvantages of this cutter should include low efficiency, especially when working in abrasive rocks because of the unilateral wear of the intermediate rings. With strong wear these rings tungsten carbide ring remain without support, which can cause them to split.

In connection with the stated technical result of the invention is to improve the efficiency of the incisor teeth by strengthening the health of the intermediate rings and the building of more favorable conditions for carbide rings.

This technical result is achieved in that the cutter for mining machines comprising a cylindrical shank and a working cylinder with a conical part, are equipped with a carbide insert and the reinforcing element in the form of carbide rings, between which are interacting with them ring from a material of lesser hardness, according to the invention, the working cylinder is supplied by a holder side tapered surface facing the carbide insert and mounted on the tool holder can be rotated, while the carbide and the intermediate ring fixed to the holder, the contact ends of their completed with slotted projections and mating depressions, and lateral conical surface casing provided with a spiral or inclined blades, reinforced wear-resistant material.

The achievement of the technical result is also that the blades are made with one-way slope.

The invention is illustrated by drawings, where figure 1 shows a General view of the cutter in longitudinal section, figure 2 and 3 - type a in figure 1 with different blades.

Cutter for mining machines includes a cylindrical holder 1 and the working cylinder 2 with a tapered part, equipped with carbide insert 3 and the reinforcing element in the form of carbide rings 4, between which there are mutual is current with them intermediate ring 5 from a material of lesser hardness. The working cylinder 2 is supplied by a holder 6, which is mounted on the holder 1 with the possibility of rotation through the ball bearing 7, lockable locking finger 8. The yoke 6 is made with a support collar 9 on the bottom for mounting rings 4 and 5. The collar 9 is connected with the yoke 6 by any known method, for example by threading. The lower end of the collar 9 and in contact with it the surface of the tool holder 1 is covered with a low friction material to reduce friction between them. Contacting the ends of the carbide 4 and the intermediate ring 5 is made with slotted projections and mating depressions 12, 13. Lateral conical surface 14 of the holder 6 is made from tungsten carbide inserts with 3 helical 11 or inclined blades 10, reinforced wear-resistant material, while the blades 10, 11 are one-sided slope, and the slope can be both right and left.

Mounting rings 4 and 5 on the surface of the cage 6 carried out by any known method after fixing it on the working cylinder 2 ball bearing 7. After that, the blade mounted in a holder drum Executive body tunneling or mining machine. When rotation is applied and the drum along the face of the cutter destroys the breed, while it is rotated around its longitudinal axis and in contact with its outer surface formed of tverdosplav the mi and intermediate rings 4 and 5, destructible array breed. In the process of destruction of the array carbide insert 3 and the side surface of the working head 2 wear out, and the rings 4 and 5 protects the side surface of the working head 2 from reinforced wear. And thanks to the supply of the working head 2 by a holder 6 mounted on the bearing 7, and the hard setting rings 4 and 5 on the holder 6 is guaranteed a rotation of the working head 2 relative to the holder 1, and hence more uniform wear over the entire outer surface of the working head 2. It also promotes and execution carbide 4 and intermediate 5 rings with slotted projections and mating depressions 12, 13 for contacting the ends of precluding turning of one of the rings relative to the other, and the execution of the conical lateral surface 14 of the cage 6 blades 10 and 11 that generates torque for rotation of the working head 2. The use of carbide rings 4 increases the wear resistance of the working head 2 and prevents the cleavage of the intermediate ring 5 as a result of their one-sided wear. At the same time, the intermediate ring 5 have less endurance, which provides in the fracture process of rock outcrop sharp edges carbide rings 4 at their ends by the smaller base. This, in turn, contributes to a more effective destruction obrazuyuscyegosya pillar rocks at the contact of the side surface of the working head 2 with an array of destructible rocks.

Owing to the above advantages, the equipment of the working bodies of mining machines offered cutters will significantly increase the efficiency of the latter.

1. Cutter for mining machines comprising a cylindrical shank and a working cylinder with a conical part, are equipped with a carbide insert and the reinforcing element in the form of carbide rings, between which are interacting with them ring from a material of lesser hardness, characterized in that the working cylinder is supplied by a holder side tapered surface facing the carbide inserts mounted on the tool holder can be rotated, while the carbide and the intermediate ring fixed to the holder, the contact ends of their completed with slotted projections and mating depressions, and lateral conical surface casing provided with a spiral or inclined blades, reinforced wear-resistant material.

2. Cutter for mining machines according to claim 1, characterized in that the blades are made with one-way slope.



 

Same patents:

FIELD: machine building.

SUBSTANCE: cutter consists of cutting point made out of silicon-carbide diamond composite and of case made out of metallic material. Also material of the case possesses higher coefficient of thermal expansion, than composite of the cutting point. Notably, the cylinder part of the point and internal surface of the case cavity of the cutter have coating. Heated metal, able to combine with any coating, is introduced into a circular cavity formed between the cylinder part of the point and a wall of the case cavity, thus fixing the point in the case. Upon successive cutter cooling, the case shrinks exerting sufficient pressure on solidified metal and presses it to cylinder external surface of the point.

EFFECT: upgraded strength of fixing cutting point in case of cutter.

19 cl, 2 dwg

FIELD: mining machinery building, particularly mining machine structures.

SUBSTANCE: cutting tool has holder including shank and head made as truncated cone. Hard-alloy conical insert having apex and base is installed on end surface of the head. Holder head is provided with cylindrical extension arranged on end surface thereof and coaxial thereto. Hard-alloy insert has cylindrical groove for above cylindrical extension receiving. End surface of holder head is superposed with surface of conical hard-alloy insert base. Conical part of holder head may be enclosed with hard-alloy insert base.

EFFECT: increased operational reliability and reduced hard-alloy consumption for cutting tool production.

3 dwg

FIELD: mining industry, particularly miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam.

SUBSTANCE: device comprises working head, shank with groove for clamping sleeve receiving and with seating surface for protective member installation in its working position. The device also has split clamping sleeve and protective member installed on clamping sleeve so that protective member may perform axial movement. Lower protective member base is spaced a distance from axis of device symmetry relative shank end. The distance is not less than 0.45 of clamping sleeve length measured along the same axis. Protective member thickness is 0.025-0.25 of clamping collar length. Protective member may be formed as flat washer, as plate-like washer, as washer with annular extension located on upper end thereof and cooperating with end working head surface, as washer with additional axial annular extension formed on lower end thereof and cooperating with cutter holder or as at least two washers.

EFFECT: reduced labor inputs for device assemblage in the field.

6 cl, 5 dwg

The invention relates to the mining industry, and in particular to tools for mining machines

The invention relates to the mining and construction industries, t

The invention relates to mining and construction

The invention relates to the mining industry, namely the cutters to equip the Executive bodies of the treatment and tunnel mining machines

Rock cutting cutter // 2183270
The invention relates to rock-installations, road and mining industry

The invention relates to the mining industry, namely to the incisors of the Executive bodies of the treatment and tunnel mining machines

The invention relates to the mining industry

FIELD: mining industry, particularly miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam.

SUBSTANCE: device comprises working head, shank with groove for clamping sleeve receiving and with seating surface for protective member installation in its working position. The device also has split clamping sleeve and protective member installed on clamping sleeve so that protective member may perform axial movement. Lower protective member base is spaced a distance from axis of device symmetry relative shank end. The distance is not less than 0.45 of clamping sleeve length measured along the same axis. Protective member thickness is 0.025-0.25 of clamping collar length. Protective member may be formed as flat washer, as plate-like washer, as washer with annular extension located on upper end thereof and cooperating with end working head surface, as washer with additional axial annular extension formed on lower end thereof and cooperating with cutter holder or as at least two washers.

EFFECT: reduced labor inputs for device assemblage in the field.

6 cl, 5 dwg

FIELD: mining machinery building, particularly mining machine structures.

SUBSTANCE: cutting tool has holder including shank and head made as truncated cone. Hard-alloy conical insert having apex and base is installed on end surface of the head. Holder head is provided with cylindrical extension arranged on end surface thereof and coaxial thereto. Hard-alloy insert has cylindrical groove for above cylindrical extension receiving. End surface of holder head is superposed with surface of conical hard-alloy insert base. Conical part of holder head may be enclosed with hard-alloy insert base.

EFFECT: increased operational reliability and reduced hard-alloy consumption for cutting tool production.

3 dwg

FIELD: machine building.

SUBSTANCE: cutter consists of cutting point made out of silicon-carbide diamond composite and of case made out of metallic material. Also material of the case possesses higher coefficient of thermal expansion, than composite of the cutting point. Notably, the cylinder part of the point and internal surface of the case cavity of the cutter have coating. Heated metal, able to combine with any coating, is introduced into a circular cavity formed between the cylinder part of the point and a wall of the case cavity, thus fixing the point in the case. Upon successive cutter cooling, the case shrinks exerting sufficient pressure on solidified metal and presses it to cylinder external surface of the point.

EFFECT: upgraded strength of fixing cutting point in case of cutter.

19 cl, 2 dwg

FIELD: mining equipment.

SUBSTANCE: the invention relates to rock-cutting equipment, in particular, to rock cutters for tunneling and getting machines. The cutter includes cylindrical holder and the operating head with conic section fitted with hard-alloy insert and reinforcing element in the form of hard-alloy rings with ring made of less dense material between them. The operating head of the cutter is has a rotating box with side conic surface on the side of hard-alloy insert, which is installed on the holder. Furthermore, the hard-alloy rings and ring spacers are fixed on the box, their contacting faces have spline keys and corresponding slots, and the side conic surface is fitted with spiral or inclined blades, reinforced with wear-proof material.

EFFECT: increased operation effectiveness through increasing operation capacity of ring spacers.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: cutter for mining machines includes holder with axial channel in which a set of wear-resistant elements in the form of external and internal cores is fixed; working heads of the above cores face one and the same side. Shank of each external core is provided with mating conical groove relative to working head of internal core. Rear part of shank of external core can be made from less wear-resistant material in comparison to head part.

EFFECT: reducing hard alloy consumption and improving cutter operating efficiency.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: cutter includes cylindrical holder and working head with conical part equipped with button insert and reinforced element in the form of hard-face rings between which rings made from material of lower hardness and interacting with them are located. Cutter is provided with frame installed on working head so that it can be rotated; at that, hard-face and intermediate rings are installed on the frame. As per the first version, intermediate rings are provided with slots throughout the height, and edges of hard-face rings contacting with them on the side of their bigger base are provided with projections arranged in slots of intermediate rings. As per the second version, contacting edges of hard-face and intermediate rings are provided with congruent projections and cavities having the shape of sine curve in front plane.

EFFECT: improving cutter operating efficiency.

3 cl, 2 dwg

FIELD: mining.

SUBSTANCE: cutting tool for mining machines includes holder with axial conical channel where there fixed is a shank of cutting tip formed by some close-ended symmetrically arranged fixing elements with conical operating part. Hard-alloy elements are done in a form of central stem of conical shape and blades. The blades have trapezoidal form in vertical plane, the larger base of which is oriented towards the holder, and are installed between fixing elements surfaces facing each other flush with their outer surface, note that there is an annular bore in the lower end of the holder and blades' upper ends have projections arranged in annular bore of the holder.

EFFECT: reduction of hard-alloy consumption and increase of cutting tool efficiency by excluding the possibility of worn cutting tools fragments getting under the other cutting tools.

2 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to cutting tools. Particularly, it relates to radial cutter of header, header and method of cutter production. This cutter comprises shank, head and insert. Said shank features out-of-round cross-section. Said head comprises point area remote from shank and lateral surfaces connecting the front and rear surfaces. Insert is arranged at the point front end. Said insert has body made of tungsten carbide and element made of superhard material. The latter extends into said body and fused therewith. At least a part of superhard material element is exposed at insert cutting surface. At least a part of head front surface is made of superhard material and spaced from the element made of superhard material.

EFFECT: better tool characteristics.

22 cl, 34 dwg

FIELD: mining.

SUBSTANCE: bore bit blade insert comprises an insert body, blade and rear edge. The rear edge of the plate is made on the surface ensuring blade sharpening from its outer rim to the inside rim decreasing in such a way that the angle between the insert rear edge and the blade points guidepath line remains constant.

EFFECT: possibility of the insert rear edge contact during its interaction with the rock is excluded and provided rock free cutting process along the entire blade insert length.

1 dwg

FIELD: mining engineering.

SUBSTANCE: hardening of mounting is carried out immediately after its production by hot stamping from cylindrical work which, in order to increase the intensity of metal deformation in head part of mounting, is pre-equipped with a facet of 0.38d to 0.44d length at an angle of 5.5β up to 7β, where d - is the diameter of work, β - is the angle of inclination of the side surface of stamp. Reinforcement of mounting with a carbide insert is made by cold pressing.

EFFECT: increasing the hardness of pick mounting surface in the area of its contact with destroyed rock, which increases the service life of pick.

5 dwg

Up!