Cone shape tooth holder

FIELD: disintegrators and crushing devices.

SUBSTANCE: group of inventions refers to crusher feeders for the mining industry. System with a tooth contains a holder and an assembly with a tooth. Holder has the first end and the second end, in which an opening is formed extending between the first end and the second end along the longitudinal axis, herewith the opening surface being conical and the diameter of the opening near the first end being greater than the diameter of the opening near the second end. Moreover, the surface of the opening forms an angle between 0.5 degrees up to 10 degrees with respect to the longitudinal axis. Tooth assembly includes an axle inserted into the holder opening along the longitudinal axis, herewith the axle being conical in order to match the opening.

EFFECT: preventing the concentration of stresses around the end of the holder, reducing the probability of shear failure.

19 cl, 6 dwg

 



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to drilling and can be used in production of diamond drill bits with steel bodies. Drill bit comprises body, flushing assemblies, PDC cutters arranged in bushes of plastic metal fitted in blade holes. PDC cutter is attached with the help of two conical lock bushes fitted one into another. One of the latter has outer cylindrical surface mating with blade hole wall and inner conical surface symmetrical about hole axis, its cone vertex facing its bottom. Another bush with inner cylindrical surface mating with PDC cutter bottom surface and outer conical surface symmetric with hole axis, cone vertex facing its inlet. PDC cutter mount hole bottom has through hole in blade of smaller diameter intended for mounting or withdrawing of PDC cutter by axial impacts or squeezing with the help of drift pin to allow worn-out section turn and replacement at cutting edge by turn through required angle relative to axis or complete replacement of PDC cutter with new one.

EFFECT: higher reliability, longer life, simplified repair.

8 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to cutter, particularly, to cutter with round shank comprising cutter head and cutter shank. Note here that fastening bush is retained in the cutter shank zone while said cutter is equipped with thrust element with guide zone. In compliance with this invention, for ease of cutter handling, said thrust element has deflecting section arranged in its zone opposite the cutter head bottom. Said section adjoins the guide zone to allow fastening bush to change from unlocked position to locked position of from partially locked position to locked position. Note also that guide zone extends through rounded flare to aforesaid thrust surface.

EFFECT: perfected design.

13 cl, 6 dwg

FIELD: construction.

SUBSTANCE: tool carrier comprises an insert attachment and a fixing attachment with a seat for a cutting tool, besides, the insert attachment comprises one support section, and the fixing part - an adjacency section, besides, the adjacency section and/or the support section have two adjacency sections, accordingly, support surfaces arranged at the angle to each other, besides, the middle longitudinal axis of the seat for the cutting tool and the longitudinal axis of the insert attachment form a blunt angle, and the support surface or support surfaces are aligned opposite to the direction of cutting tool feed. The locating part to receive the specified tool carrier comprises a plug seat, an attachment and a support attachment, besides, the support attachment forms a support with one or several adjacency surfaces, and the attachment - a supporting bearing with one or several additional adjacency surfaces, besides, the support attachment has two adjacency surfaces faced against the direction of feed, and/or the attachment has two additional adjacency surfaces, faced in direction of the tool feed. Adjacency surfaces and/or additional adjacency surfaces are installed prismatically at the angle to each other, and the adjacency surface forms a blunt angle with the middle longitudinal axis of the plug seat. A tooling system includes the specified tool carrier (20) and the specified locating part.

EFFECT: strong rigid stable support of a tool carrier relative to a locating part, especially under high loads.

18 cl, 8 dwg

FIELD: mining.

SUBSTANCE: method for attachment of rock destroying inserts in working element of drilling tools and sinking machines involves inserts location in bushes made of flexible material that are pressed-in into working element of drilling tool and sinking machines, note that there are longitudinal channels on bushes external surface for air supply and distribution of stresses during pressing-in.

EFFECT: increase of error-free running time of working elements.

FIELD: mining.

SUBSTANCE: fastener includes tool holder having a hole passing in housing part of holder for arrangement of projecting fastening part of the tool; at that, the tool holder has mutually coupled design for mechanical coupling to the base having the mating structure; at that, base has the possibility of being attached to the machine, and in addition, fastener has a holding device containing mutually coupled design for interaction with holder and base when it is in the specified position to retain the holder on the base; at that, in addition, holding device includes a cavity to arrange the fastening part of the tool in it; and tool has the possibility of being fixed so that it can be held in coupled position with the hole and cavity, and when the tool is fixed in such a way, it prevents the removal of holding device from its set position.

EFFECT: reduction of down time for replacement of worn-out parts.

Tool // 2470155

FIELD: process engineering.

SUBSTANCE: invention relates to tool intended for fitting cutter in its holder and withdrawing it therefrom. Proposed tool comprises executor with release section and may displace in direction of displacement. Said executor may be shifted by adjusting unit. Note here that executor has pull-in section remote from release section and is located across direction of executor displacement. Executor may be driven by adjusting unit in two directions.

EFFECT: compact and simple tool.

20 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: cutting tool holder has insert and fixing head, note that the fixing head has socket for cutter, and fixing head in the direction of tool supply, at least, partially protrudes forward in relation to the insert head or above it, note that the fixing head has solid pre-shaped area with, at least, one bearing surface made in direction of supply, at least, partially before the insert head. Base part for cutting tool holder location has pin socket and supporting head that forms a support, note that supporting head is installed in the direction of supply before the pin socket and fixes the support before the pin socket.

EFFECT: endurance of large loads that appear at open-pit mining and optimised distribution of efforts as well as long service life and increase of operating reliability.

16 cl, 8 dwg

FIELD: mining.

SUBSTANCE: cutter for mining machines comprises a holder with an axial conical channel, where a tail is fixed of a cutting tip formed by two closed symmetrically arranged fixators with a conical working part and spherical seats at contacting surfaces for hard-alloy elements, the diameter of which increases in direction from the top towards the tail. The cutter is equipped with an additional holder in the form of a conical rod rigidly connected to a tail of the cutting tip, and hard-alloy elements and fixators are arranged with axial through conical channels, where the additional holder is installed. The additional holder may be made of a material with lower hardness and higher tensile strength compared to appropriate parameters of hard-alloy elements.

EFFECT: reduced hard alloy consumption, higher efficiency of cutter operation, increased tunnelling and speed of rock breaking.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: cutter attachment point includes cams and split sleeve with annular cavity on outer surface and cones on ends, the sleeve is installed in joined grooves of cam and cutter liner. Cutter attachment point is provided with restrainer in a form of a bar installed in cavity of split sleeve and fixed rigidly with it, at that in initial position outer diameter of split sleeve is less than diameter of groove formed by joining of grooves on inner surface of cam channel and side surface of liner, and inner diameter is less than outer diameter of restrainer. Groove in cam for split sleeve is of a stepped configuration.

EFFECT: reducing time required for cutter replacement.

2 cl, 2 dwg

Cutter remover // 2432252

FIELD: process engineering.

SUBSTANCE: invention relates to toll intended for removing cutter from cutter holder. Proposed remover comprises moving base element to receive actuator that has ejection core. Said actuator is directly or indirectly jointed with cylinder-piston or electric drive. Said actuator is arranged on base element to turn about rotary support. In compliance with second version, said ejection core is driven by actuator mechanism. In compliance with third version, said base element is provided with rest section for rest on cutter holder or wear-resistant washer. In compliance with fourth version, ejection core is jointed with flexible element, in particular, to chain. Note here that flexible element is fitted with no lengthwise camber in guide, in particular, tube. In compliance with fifth version, ejection core 65 is driven by fluid 66.3.

EFFECT: fast and simple removal.

16 cl, 8 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fitting and locking of rotary thrust tool in its holder. Proposed method consists in fitting and locking the cutter in holder by self-locking retainer. Said retainer exploits the steel spring effect and combination of the angles of bevels that retain said retainer in holder seat. Low-wear controlled bushes and thrusts take up major force at cutting and prevent jamming of the cutter in holder.

EFFECT: maximized service life.

7 dwg

FIELD: mining.

SUBSTANCE: cutter for driving and cleaning and cutting machines comprises a holder with a shank, a reinforcing hard-alloy insert having front and rear faces of sharpening, a cutting edge having a semi-circular convex shape. According to the first embodiment, the front face of sharpening of the reinforcing hard-alloy insert is made of semicircular convex shape, and the rear face - of plane-concave shape. According to the second embodiment, the front and rear faces of sharpening of the reinforcing hard-alloy are made of semicircular biconvex shape.

EFFECT: increasing productivity of the working bodies of driving and cleaning and cutting machines, reduced wear of the reinforcing hard-alloy insert of the cutters.

5 cl, 10 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: tool includes a housing and a hard-alloy insert that is fixed on the housing. The insert includes a head part, an intermediate part, a base and a shank. Intermediate part of the insert, and/or its base represent a stepped pyramid-shaped body, the stages of which are made in the form of regular right-angle prisms and/or prismatoids.

EFFECT: optimisation of geometrical parameters of a hard-alloy insert.

10 cl, 8 dwg

FIELD: oil and gas industry.

SUBSTANCE: tool (2) for ground breakage and extraction contains body (4), support surface (12) at working end (8) of the case including cavity (14) and side walls (16), insert (20), with tip (22), wedge-shaped face surface (26), lateral surface (28) and transitional edge (30) at crossing of face surface (26) and lateral surface (28) and ring (40) located radially outside protruding side walls (16). Transitional edge (30) and the most axially protruding surface (18, 42) along the axis of each side walls (16) and ring (40) are made as step-shaped backward configuration. The most forward and axially protruding surface (42) of the ring (40) is placed at axial distance D from tip (22) of the insert (20), while the most backward and axially protruding surface (56) of the ring (40) is placed at axial distance d from tip (22) of the insert (20), at that ring (40) is the most radially remote area of the tool (2) within interval D-d, at that the most backward and axially protruding surface (60) of the insert (20) is placed at axial distance L from tip (22) of the insert (20), where 0.5L≤D≤0.9L, preferably 0.5L≤D≤0.8L. Invention also describes machine for material extraction with installed tool (2) for ground breakage and extraction and method of tool (2) manufacturing.

EFFECT: increasing service life of tool.

13 cl, 4 dwg

FIELD: construction.

SUBSTANCE: pick or earth-moving tool comprises a body, a support surface, comprising a cavity and axially protruding side walls, an insert fixed in the cavity, comprising a tip, a cone-shaped front surface, a side surface and a transition edge at the crossing of front and side surfaces, and a ring arranged radially outside the protruding side walls, made of a more solid material compared to the body. The axial position of the transition edge and the axial position of the axially most front surface of side walls are substantially identical, at the same time the axially most rear surface of the insert is arranged at the axial distance L' from the insert tip, and the axially most front surface of the ring is arranged at the axial distance D' from the insert tip, where 0.5L'≤D'≤0.9L', preferably, 0.5L'≤D'≤0.8L'. The transition edge and the section of the cone-shaped front surface may be arranged inside a ballistic contour formed by the insert tip, the radially most external section of the axially most front surface of side walls and the ring.

EFFECT: invention provides for operation of a tool under heavy conditions, extended service life of a tool, and reduction of tool blunting to the minimum for improved operational characteristics.

13 cl, 7 dwg

FIELD: mining.

SUBSTANCE: cutter for mining machines includes a holder with an axial channel. A cutter shank is fixed in axial channel with possibility of being turned and with possibility of restricted axial movement. Also, elastic element in installed in axial channel between end face of axial channel and shank. Peculiar feature of the above proposed cutter is that holder is provided at least with one radial slot in which a guide rod is fixed. Cutter shank is equipped with a bushing rigidly attached to it, the projecting part of which is provided with a wear-resistant material. Opposite (lower) part of the bushing is provided with an inclined slot for interaction with a guide rod of the holder. Besides, wear-resistant material is applied to external surface of the bushing in the form of inclined strips located in a staggered order.

EFFECT: such design of cutter allows increasing its operating efficiency and operating efficiency of an element of a continuous heading or extracting machine as a whole.

2 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: 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: process engineering.

SUBSTANCE: invention relates to drum-roller mills and may be used in construction, power engineering, chemical and food industries etc. Proposed mill comprises hollow cylindrical housing 1 mounted at roller bearings 2, different-diameter rolls 7, 8 arranged there inside, device to press said rolls to said housing 1 and material stepwise feeder. Said feeder combines loading device, tripping device, redirecting device and unloading device and is composed of a box 11 with displacing guides 12 and scraper 14.

EFFECT: higher efficiency of mixing, simplified design.

2 cl, 2 dwg

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