Radial tool with superhard cutting surface

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

 

The technical field to which the invention relates

The present invention relates to cutting tools. More specifically, the present invention relates to a non-rotating radial electric cutter machine containing superhard material, such as polycrystalline diamond embedded in the cutting plate so that at least the region of the cutting surface includes an outdoor superhard material. The present invention also relates to a method of manufacturing, and electric machine with a rotating element that has the cutter, and to the production method.

The level of technology

In the following description of the prior art mentioned certain patterns and ways. However, such references should not be interpreted as the assumption that these structures and methods may be opposed to this proposal. The applicant reserves the right to demonstrate that such structures and/or methods may not be opposed to this proposal.

Cutting tools used in the mining industry, for example, for drilling soft rock and wide recess, contain the shank, which is inserted into instrumentalization. The working part, oriented forward, when the work interacts with the mineral deposits, such as cuts into the formation, the particular coal, and moves along its front surface. For cutting of mineral deposits inserts are usually placed on the front site. To extend the service life of the cutting insert, when it carries out the seizure of the mineral, used cutting inserts of hard wear-resistant material.

With the wide notch on the rotating drum is usually set a lot of cutters, the cutting plate which faces the direction of rotation so that the cutting edge of the plate crashed into the mineral. For the cutting plate has a rear surface designed to reduce friction front of the work area of the mineral, when the cutting tool passes through it, and to create a relief or a way of gathering carved rocks.

In such conditions, the front working area of the cutter as on the edge of the cutting plate and the front portion of the cutter wears. Increased friction and abrasion of these surfaces in the interaction with the mineral lead to wear and can generate excessive heat, which may result in destruction of the insert. In addition, as any signs of wear on the rear surface of the cutting plate and flattening of the contact surface increases power consumption of the machine and increases the dust.

Examples of the electric tool, the tov is shown in U.S. patent 4194790; 4277106; 4674802; 4913125; 5806934 and 7393061; UK 884224; 1000701; 1006617; 1212200 and Germany 295 03 743.

Disclosure of invention

Illustrative option non-rotating cutter electric machine contains a plot of the shank of non-circular cross-section, the area of the head that contains the region of the tip remote from the site of the shank, the area of the flange that separates the section of the shank from the site of the head, and the cutting plate mounted on the front end of the tip, while the cutting plate includes a housing made of tungsten carbide, and an element made of a superhard material, the element made of a superhard material, fused with the body, at least a portion of the first surface element made of a superhard material, is open at the cutting surface of the cutting plate.

Illustrative variant of the method of manufacturing a cutting insert for radial cutter includes steps that form an empty space in the sintered body made of a composition containing tungsten carbide, put the composition containing powdered superhard material in empty space, and alloy composition containing powdered superhard material with sintered body at a high pressure/high temperature for forming the cutting plate and, if necessary, grind ajudou surface for narrowing edges of the cutting surface.

Illustrative variant of the method of manufacturing a cutting insert for radial cutter includes steps that form an empty space in a green building, made of tungsten carbide, put the composition containing powdered superhard material, in empty space, is sintered green body, at the same time Slavova composition comprising powdered superhard material with sintered body at a high pressure/high temperature for forming the cutting plate, and, if necessary, grind the cutting surface for narrowing edges of the cutting surface.

It should be understood that the foregoing General description and following detailed description are illustrative and explanatory and are intended for further explanation of the claimed invention.

Brief description of drawings

The following is a more detailed description of the invention with reference to the attached drawings, in which identical elements are denoted by the same positions, and where:

Figa is a schematic view of an illustrative version of the cutter for electric machines.

FIGU is a schematic view of another illustrative options cutter for electric machines.

Figa and 2B are illustrative variant of the insert area, made of superhard material when viewed from above (figa) the cross section (pigv).

Figa and 3B is illustrative variant of the insert area, made of superhard material when viewed from above (figa) and in cross section (Fig. 3B).

Figa and 4B is another illustrative variant of the insert area, made of superhard material when viewed from above (figa) and cross sections (pigv).

Figa and 5B is another illustrative variant of the insert area, made of superhard material when viewed from above (figa) and cross sections (pigv).

Figa-6S - for more illustrative version of the insert area, made of superhard material when viewed from above (figa) and two sections (figv and 6C).

Fig.6D - section of an alternative insert for figa-6S with a different orientation of the elements, made of a superhard material.

Figa-7C - additional illustrative variant of the insert area, made of superhard material when viewed from above (figa) and two sections (figv and 7C).

Fig.7D - section of an alternative insert for figa-7C with a different orientation of the elements, made of a superhard material. Shows an example of items that end within the body of the insert.

Figa and 8B - additional illustrative ways of cutting surface area, made of superhard mater the Ala top view and in cross section.

Figa-9S - for more illustrative version of the insert area, made of superhard material when viewed from above (figa) and two sections (figv and 9C).

Fig.9D-9E - section alternative insert at figa-7C with a different orientation of the elements, made of a superhard material. Shows an example of items that end within the body of the insert.

Figa and 10V illustrative option of cutting surface area, made of superhard material, when viewed from above, lattice location of open cutting elements on the cutting surface (figa) and with the locations of the cutting elements on the cutting surface in the form of a lattice (pigv).

Figa-11S - for more illustrative version of the insert area, made of superhard material, when viewed from above (figa) and two sections (figv and 11C).

Fig is part of a method of manufacturing a variant of the cutting plate of the cutter of the present invention, in which a composition comprising a superhard material, is placed in the empty space layers.

Fig - disassembled illustrative version of the tool, Jack and restraint.

Detailed description of the invention

On figa shows schematic view of an illustrative version of the electric cutter machine. The cutter 10, pokazannaya figa, contains section 12 of the shank, plot 14, the flange section 16 of the head.

Section 12 of the shank has a non-circular cross-section. Many surfaces of the shank shown in figa, can be located essentially orthogonal or can be located at an angle, as described in U.S. patent 4913125, the contents of which are fully incorporated here by reference. In addition, the intersection of any two surfaces may be rounded at a certain radius, or may be sharp. Essentially form part of the shank prevents the rotation of the cutter when it is installed in the slot of the cutting drum with a response form.

Section 14 of the flange separates the section 12 of the shank from section 16 of the head radially protruding flange or skirt 18.

Section 16 of the head has a front surface 20, a rear surface 22 and side surfaces 24A, 24b, which connect the front surface 20 and rear surface 22. Relative to the direction M of movement when working the front surface 20 is a front edge and a rear surface 22 is a back edge. Each of the side surfaces 24A, 24b may include a retaining section 26, which connects the site 16 heads with section 14 of the flange to maintain the section 16 of the head. In alternative embodiments, the cutting plate is essentially entirely made of superhard material

Section 16 of the head region contains 28 tip remote from section 12 of the shank. The cutting plate 30 is installed on the front end 32 of the field 28 of the tip. The cutting plate 30 includes a housing 34 and the element 36 made of a superhard material. The element 36 made of a superhard material, fused with the body 34. The housing 34 is made of material having an intermediate hardness between the hardness of superhard material and the hardness of the material from which the section 16 of the head. In the illustrative embodiment, the housing 34 is made of tungsten carbide. At least a portion of the first surface of the element 36 made of a superhard material, is open at the cutting surface 38 of the insert 30.

On FIGU shows schematic view of another illustrative version of the electric cutter machine. The cutter 100 FIGU contains section 112 of the shank, section 114 of the flange and the section 116 of the head, such as those described with reference to figa. In addition to the signs of the cutter 10 electric machine shown and described with references to figa, the cutter 100 FIGU has a plot 102 of the front surface 120 of section 116 of the head, which is made from a superhard material. If any section 102 may be located at a distance from the element 136 made of a superhard material and open at the cutting surface of the cutting is her plate 30, or may be its continuation. In both cases, the section 102 provides increased wear of the front surface 120 of section 116 of the head, when the cutter 100 electric machine cut into the mineral.

The form of a cutting plate in either case cutter 10, 100 electric machine can have many options. Examples of variants of the insert 30 and the element 36 made of a superhard material, described below with reference to figure 2-11.

In the illustrative embodiment, the element 36 made of a superhard material includes a first surface and an opposite second surface, the second surface passes to the inner surface of the housing. An example layout is shown in figa and 2B.

On figa and 2B shows an illustrative version of the cutting surface area, made of superhard material, when viewed from above (figa) and cross sections (pigv). Top view figa shows the cutting surface 38 of the insert 30. The section on FIGU corresponds to the section along the line a-a in figa.

In illustrative embodiments, the cutting plate 30 element 36 made of a superhard material has a first surface 40, open at the cutting surface 38. In the embodiment of figa and 2B, the ends 42A, 42b of the element 36 made of a superhard material, do not reach the periphery 44 of the cutting surface 38. On each the second end of the element 36, made from a superhard material, there is an area, which forms the side wall 46a, 46b adjacent to the volume occupied by the element 36 made of a superhard material. Alternatively, one or both ends 42A, 42b of the element 36 made of a superhard material, can reach the periphery 44 of the cutting surface 38 (see, for example, figa and 5A).

The section on FIGU shows the depth from the cutting surface 38, which passes the element 36 made of a superhard material. On figv the second surface 48 of the element 36 made of a superhard material, the ends inside the housing 34. Therefore, the second surface 48 reaches the inner surface 50 of the housing 34. The second surface 48 essentially lies opposite the first surface 40. This same design can be used for one or more elements 36, as shown in the illustrative embodiment of fig.7D.

In an alternative embodiment, the element made of superhard material includes a first surface and an opposite second surface, and an element made of a superhard material, reaches the base surface of the cutting plate, which is opposite the cutting surface, the second surface is open on the base surface. An example of such a configuration is shown in figa and 3B.

Figure 3 and 3B shows an illustrative version of the cutting surface 38 with the area made from a superhard material, in terms of (figa) and cross sections (pigv). Top view figa illustrates the cutting surface 38 of the insert 30. The section on FIGU corresponds to the section along the line b-b In figa.

In illustrative embodiments, the cutting plate cutting element 36 made of a superhard material passes from the cutting surface 38 to the base surface 52 of the insert 30. The base surface 52 lies essentially opposite the cutting surface 38, and the first surface 40 lies essentially opposite second surface 48. At least part of the second surface 48 is open at the base surface 52.

In the present description, the term "open" as applied to the cutting surface 38 may refer to any of the following situations: the first surface 42 of the element 36 made of a superhard material, bordered by the cutting surface 38, acts on it or recessed into it. In addition, in the present description, the term "open" as applied to the base surface 52 can refer to any of the following situations: the second surface 48 of the element 36 made of a superhard material, it borders with the base surface 52, is from her or recessed into it.

For example, as shown in figv, 3B and 5B, the first surface 40 of the element 36 made of a superhard material, bordered re the current surface 38. At the point where the first surface 40 meets the cutting surface 38, the surfaces 38, 40 are located in the same axial position between and essentially no ledge. Even if these surfaces meet at an angle corresponding surfaces 38, 40 are adjacent to each other at an angle and the first surface 40 of the element 36 is contiguous with the cutting surface 38. For example, the cutting surface 38 on the housing 34 is beveled from the plane in which lies the surface 40 (see figv and 3B). Also, for example, at least a portion of the first surface 40 of the element 36, respectively beveled together with the cutting surface 38 of the housing 34 (see figv).

In another embodiment, shown in figs and 5D, the cutting surface 38 meet at the top 39. Here the first surface 40 of the element 36 made of a superhard material, has an edge without a flat surface or alternatively with a minimum flat surface in comparison with the first surface 40, such as Figo and 5B. This top can be acute or rounded and can be used in various illustrated embodiments. The section on FIGU corresponds to the section along the line D'-D', figa.

In another example, shown in figv, the first surface 40 of the element 36 is outside of the cutting surface 38. Between the first surface 40 and the cutting surface 38 and eeda ledge 54.

The cutting plate can contain many elements, made of a superhard material. On figa-6C, 7A-7C, 9A-9C and 10 show examples of cutting plates 30, containing many elements 36, made of a superhard material. This set of elements can be installed in different orientations. For example, many elements 36 can be opened at the cutting surface 38 of the cutting plate 30 rows or columns (see figa-6C and 7A-7C), or gate (see figa)or quadrant (see figv). Alternatively, many elements 36 can be introduced into the housing 34 of the insert 30 so that the peripheral surface of the cutting plate 30 could not open sides or was open one or more sides of the cutting elements 36 having one or more end surfaces 42A, 42b (see, for example, figa-9C).

We can assume that the shape of the elements 36, made of a superhard material includes a first surface 40, the second surface 48 opposite the first surface 40 and the side surface 42A, 42b, connecting the first surface 40 with the second surface 48 for receiving essentially prismatic shape or substantially polygonal shape along three axes. The shape of the element 36 has a first axis, which lie opposite to the first surface 40 and a second surface 48. The first axis usually is about orthogonal planes, in which lie the first surface 40 and a second surface 48 (see, for example, figv and 6D), but in some cases it may be tilted (see, for example, figs and 7C). The shape of the element 36 has a second axis which lies opposite the end faces 42A, 42b. The shape of the element 36 has a third axis, which lie opposite side surfaces. The third axis generally orthogonal to the planes in which lie side surfaces.

Different axis elements 36 can be oriented differently in order to improve the wear resistance of the cutting plate 30. For example, the element 36 or one or more of a variety of elements 36 can be oriented along the first axis (i) perpendicular to the base surface 52 of the insert 30 (see, for example, figw, 6D, 7D and 8B) or (ii) is not at a right angle to the base surface 52 of the insert (see, for example, figs and 7C) and can cross (i) a base surface 52 (see, for example, figw, 6C-6D, 7C-7D, 8D) or (ii) a peripheral surface (see, for example,, figs, 7C, 9C-9D) or may be a combination of any of these characteristics (see, for example, figs and 7C).

Similarly, the axis between the opposite side surfaces may be oriented differently in order to improve the wear resistance of the cutting plate 30. For example, the element 36 or one or more of a variety of elements 36 can be oriented on the third OS is, i.e. along the axis, which lie opposite side surfaces, and can be oriented to intersect with the peripheral surface of the cutting plate (see, for example, figa, 5A, 6A and 6C, 7A and 7C, 9A and 9C-9F).

In some embodiments, at least one side surface is open at the peripheral surface of the insert. This lateral surface may be end surface 42A, 42b or the other side surface, which (i) may be connected to the element 36 on the cutting surface 38 of the cutting plate 30 (see, for example, figa, 5A, 9A and 9C-9F), (ii) may be connected to the element 36 embedded in the cutting surface 38 of the cutting plate 30 (see, for example, figa and 9C-9F), (iii) may be connected to the element 36 located at an angle to the base surface 52 (see, for example, figa and 6C, 7A and 7C) or parallel to base surface 52 (see, for example, figs-9F), or (iv) may be a combination of any of these signs.

In another example, the cutting plate 30 contains the second element 36 made of a superhard material, which is located completely inside the housing 34 of the insert 30. For example, on fig.9D shows an alternative illustrative variant of the cutting plate 30, shown in figa-9S, but with the second element 36A and the third element 36b, recessed into the housing 34. Although fig.9D the second element 36A and/or third ale is NT 36b shows a fully recessed into the housing 34 of the insert 30, at least one lateral surface of these elements alternatively can be opened on the peripheral surface of the cutting plate (see, for example, five). In addition, figa-11C shows an alternative variant of the cutting plate 30 with the element 36 made of a superhard material, fully recessed into the housing 34 of the insert 30. In this embodiment, by figa-11S in the formation of the cutting plate 30 element 36 is not opened, but as wear of the housing 34 when the element 36 is opened.

The cutting plate 30 many of the elements 36, made of a superhard material, can be described as a plate, in which the element (s) 36 is held in the housing 34 of the insert 30 as a vein. In this orientation, the cutting plate 30 may include a first surface that is open on the cutting surface 38 of the cutting plate 30 to form the set of discrete areas of open superhard material.

On figa and 7A shows an example of the elements 36, made of a superhard material, located as veins in the body 34 of the insert 30 and having a first surface, open at the cutting surface 38 to form the set of discrete areas. On figa open the first surface is essentially round, and figa open the first surface is essentially quadrilateral is, but you can use any of the alternative forms that create on the cutting surface 38 corresponding to the open field.

On figa and 10B shows additional examples of items 36, made of a superhard material located in the housing 34 of the insert 30 as veins and having a first surface, open at the cutting surface 38 for forming multiple discrete areas. On figa open the first surface of the many elements 36 is a lattice, which can be arranged in rows and columns or arranged in a checkerboard pattern, as shown in the drawing, and figv open the first surface of the many elements 36 located quadrants relative to the axis And the cutting plate 30.

Essentially, as described above, the area of the element 36 made of a superhard material, open at the cutting surface 38, is not the whole of the area of the cutting surface 38. If the cutting surface 38 are plenty of elements 36, as shown in figa, 7A, 10A and 10B, the total surface area of open elements 36 is less than the entire area of the cutting surface 38. In addition, when using erosion occurs cutting surface 38, which leads to a change in the working area, i.e. the area of the cutting surface that is in contact with the rock, but during this period the area open from the solid material remains smaller than the area of the cutting surface. This process can lead to Samogitian cutter and/or to obtain more sharp cutter.

Any of the elements of the cutting plate 30 can be formed in any prismatic shape so that one or more of the side surfaces have the shape of a square, rectangle, polygon (N-gon, where N is the number of sides (five, six, seven, and so on). For example, on figa and 8B in the cross-section shows additional illustrative variants of the cutting plate having a prismatic shape, area, made of a superhard material. On figa element 36 of the superhard material is installed in the cutting surface 38 and introduced into the cutting plate, but does not reach the base surface 52. On FIGU element 36 made of a superhard material, is installed in the cutting surface 38 and reaches the base surface 52. The cutting surface 38 of the cutting plate 30 on figa and 8B has a square shape. The square shape of the cutting surface 38 and/or cross-section of the housing 34 can be replaced by an essentially right cylindrical shape of the insert 30, as shown in the top and in sections 2-7 and 9-11. In addition, the cutting plate 30 on figa, 8B may have beveled edges, obtained by mechanical means, for example by grinding. Chamfer a beveled edge may be restricted by the housing 34 (see, for example, figw, 3B and 4B) or may include the element 36 made of a superhard material (see, for example, pigv).

Superhard materials in the present description include any materials having a Knoop hardness of not less than 2800 units. The Knoop hardness of some materials, including some superhard materials below:

MaterialKnoop hardness
Diamond6500-7000
Polycrystalline diamond4000-7000
Cubic boron nitride (CBN)4700
The boron carbide (B4C)2800
Silicon carbide (SiC)2480-2500
Aluminum oxide (Al2O3)2000-2100

Illustrative options for superhard materials used in the present invention include polycrystalline diamond and cubic boron nitride. Other superhard materials that can be used in the present invention include (i) polycrystalline diamonds with more than 80% of the diamond is the link between diamonds, (ii) polycrystalline diamond (the content of diamond is approximately 30%) - added phases of one or more of the refractory metals, transition metals, carbides and nitrides, (iii) composites with high diamond content, for example Ringwood (sealed with silicon carbide and similar materials for the formation of strong links between the diamond grains at intermediate and high pressure), tungsten carbide (WC) with the addition of diamonds and, optionally, one or more of the carbides and nitrides, mixtures of superhard materials, (iv) single-crystal or polycrystalline diamond coating is applied by chemical deposition vapor, and (v) any superhard material (i)to(iv), in which part of diamond or all diamonds replaced with cubic boron nitride.

Illustrative options cutter electric machine is manufactured by the method, in which the fuse element made from a superhard material, with the body of the cutting plate at high pressure/high temperature. Examples of a process that uses high pressure and high temperature, are shown in U.S. patents 3141746; 3745623; 3609818; 3850591; 4394170; 4403015; 4797326 and 4954139, the contents of which are fully incorporated into the present description by reference. In U.S. patent 4124401 describes a method for PCE low diamond content, the content of which is fully incorporated in the present is the Scripture by reference. In the specific examples in this method initially sintered body or green body, which then process the application of high temperature and high pressure to get the inserts.

For example, a method of manufacturing a cutting insert for radial cutter includes stages, which form the empty space in the sintered body made of a composition containing tungsten carbide, and fill in that empty space composition comprising powdered superhard material. Then the composition comprising powdered superhard material alloy with sintered body at a high temperature/high pressure of the cutting plate. If necessary, the cutting plate can be sanded on the cutting surface for narrowing edges of the cutting surface and/or the insert.

In addition, for example, a method of manufacturing a cutting insert for radial cutter includes stages, which form the empty space into a green body made of a composition containing tungsten carbide, and in that empty space is placed a composition comprising powdered superhard material. Then the green body is sintered simultaneously fusing composition comprising powdered superhard material with sintered body at a high temperature/you the eye pressure of the cutting plate. Then, if necessary, inserts, you can grind on the cutting surface for narrowing edges of the cutting surface and/or the insert.

Empty space can be any empty space. For example, a blank space may be a hole passing from one side of to the other side, the recess, the bottom of which is recessed, full of holes or multiple holes or their combination. In illustrative embodiments, an empty space is formed by an electro-erosive machining or molding.

In illustrative embodiments, the composition comprising powdered superhard material may contain cobalt and/or other known solvent diamonds and regulatory material, added in powder form. Examples of regulatory materials are refractory metals, transition metals, carbides and nitrides. In addition, the housing may include cobalt, or other known solvents diamonds, and at least part of the cobalt or solvent at high pressure/high temperature migrates into powder superhard material.

The premise of the composition containing the powder of superhard material, the blank space being performed by filling the empty space in advance of the mixed powder composition with stage seal is or without him. When finished cutting plate must have many elements, made of a superhard material, you can use a lot of empty spaces, each of which fill composition comprising powdered superhard material. Alternatively, as shown in Fig, empty space 80 can be prepared and filled (F), alternating volumes of the composition 82 comprising powdered superhard material, and the gasket 84, for example a strip containing tungsten carbide or other composition that is consistent with the composition of the body of the insert. This alternative approach allows to obtain a multilayer composition containing composition with a powder of superhard material, and the gasket, which essentially fused at high temperature/high pressure to obtain a cutting plate 86.

The assembled cutter and the sleeve can then be inserted into the holder slot for node creation. On Fig shows the disassembled cutter 100 electric machine, the holder 102 and the holding device 104. The holder 102 is made socket 106 opening to the outer wall containing the opposite side surfaces having the form of, essentially return the form of a flange 114 of the cutter 100. If necessary, the slot may have a groove 110, creating a gap for any of the flows on the cutter formed at clicks the design pressure, to the opposite surface of the flange and the holder tightly to each other. On the front side of the flange, if necessary, can be performed shifted the site to leave a positive clearance between the cutter and the holder, in which you can insert extraction tool to extract the cutter from the holder. Also optionally, each corner of the holder has a rounded shape corresponding to the fillets on the shank. This allows to obtain more durable holder compared with the holder in which the corners are not rounded.

The shank 112 of the cutter shown the hole 116, for example, the slot for retaining the device 104, which holds the cutter 100 in the holder 102. Preferably, the retaining device has such a form that pulls the opposite inclined surfaces to each other, to keep them pressed together end to end. Thus, minimizing the possibility of passing between them foreign material. The holder also shows the connector 120 for spraying water to suppress dust during cutting.

Illustrative holder described and shown in U.S. patent 4913125, the content of which is fully incorporated into the present description by reference.

The base 130 of the holder 102 is configured to attach to a rotating element cuts the th machine, for example mountain harvester, construction machine, drilling shield or ditcher. The illustrative cutting machine includes a rotating element in the form of a rotating drum and one or more holders installed on the drum, for example, bolts and/or by welding. In the slot of the holder can be installed illustrative options cutter, as shown and described above. Examples of such cutting machines are tunneling shield Sandvik MT720 or continuous miner with the installation of anchoring Alpine Bolter Miner ABM 25 company Voest-Alpine.

Although the present invention has been described with references to preferred options, specialists in this field it is clear that they can be executed additions, deletions, amendments and substitutions specifically undescribed, but not beyond the nature and scope of the invention defined by the attached claims.

1. Non-rotating cutter electric machine, comprising:
plot shank having a non-circular cross-section,
the area of the head that contains the region of the tip remote from the site of the shank, and side surfaces connecting the front surface and the back surface, and
the cutting plate mounted on the front end of the tip with the cutting surface, oriented on the same side of the section head and the front section,
while cutting p is astina includes a housing, made of tungsten carbide, and an element made of a superhard material,
the element made of superhard material is the case made from tungsten carbide and fused with the body, made of tungsten carbide,
at least a portion of the first surface element made of a superhard material, is open at the cutting surface of the cutting plate, and
moreover, at least a portion of the front surface of the head is made of superhard material and located at a distance from the element, made of a superhard material, which is open at the cutting surface of the cutting insert.

2. The cutter according to claim 1, in which the element is made of superhard material includes a first surface and an opposite second surface, and the element made of superhard material is held to the base surface of the insert opposite to the cutting surface, the second surface is open on the base surface.

3. The cutter according to claim 1, in which the element is made of superhard material has a first surface and an opposite second surface, the second surface passes to the inner surface of the shell.

4. The cutter according to claim 2 or 3, in which the axis between the first surface and the second surface is oriented perpendicularly to the base surface.

5. The cutter according to claim 2 or 3, in which the axis between the first surface and the second surface is oriented at an angle to the base surface.

6. The cutter according to claim 1, in which the element is made of superhard material includes a first surface and an opposite second surface, and the axis between the first surface and the second surface intersects the peripheral surface of the insert.

7. The cutter according to any one of claims 1, 2, 3, or 6, in which the cutting plate contains many elements, made of a superhard material.

8. The cutter according to claim 7, in which each of a variety of elements made of a superhard material, is as vein in the body of the cutting plate and the first surface is open at the cutting surface of the cutting plate for the formation of many discrete areas of open superhard material.

9. The cutter according to claim 1, in which the element is made of superhard material includes a first surface opposite a second surface and a connecting side surface, and the axis between the two opposite side surfaces intersects the peripheral surface of the insert.

10. The cutter according to claim 9, in which at least one side surface is open at the peripheral surface of the insert.

11. The cutter according to claim 9 or 10, in which R is driving plate containing the second element, made from a superhard material, while the second element is completely inside the body of the insert.

12. The cutter according to claim 9 or 10, in which the cutting plate contains a second element made from a superhard material, while the second element has at least one lateral surface, open at the peripheral surface of the insert.

13. The cutter according to claim 1, in which the area of superhard material, open at the cutting surface, less than the full working area of the insert.

14. The cutter according to claim 1, in which the superhard material is any material with a Knoop hardness of not less than 2800 units.

15. Electric machine, containing
rotating the element, and
the cutter according to any one of claims 1 to 3, 6, 8-10, or 13-14 installed in the holder socket mounted on the rotating element.

16. A method of manufacturing a cutter according to any one of claims 1 to 3, 6, 8-10, or 13-14, including the stages at which the fuse element made from a superhard material, with the body of the cutting plate at high pressure/high temperature.

17. A method of manufacturing a cutting insert for radial cutter, comprising the steps are:
provide a green body made of a composition containing tungsten carbide;
form an empty space into a green body;
put the composition containing the Yu powder superhard material in the empty space, and
is sintered green body, simultaneously fusing the composition comprising a superhard material with sintered body at a high pressure/high temperature for the formation of the insert.

18. The method according to 17, in which the empty space includes a hole passing from a first side of the housing to the second side of the body.

19. The method according to 17, in which the stage on which is placed a composition comprising powdered superhard material in the empty space includes a stage on which alternate amount of a composition comprising powdered superhard material with a gasket, which is a green body made from a composition that includes tungsten carbide, to obtain a layered structure of a composition comprising powdered superhard material, and strip.

20. The method according to 17, in which a composition comprising a powder of superhard material contains one or more of cobalt and/or regulatory material, added in powder form.

21. The method according to 17, in which the composition of the housing contains cobalt and at least part of the cobalt from this composition migrates to the superhard material at high pressure/high temperature.

22. The method according to 17, in which grind the inserts for narrow edges of the cutting surface.



 

Same patents:

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: 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: 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 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: 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

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

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