Device for mounting cutters mining machines
(57) Abstract:The invention relates to the mining industry, namely, devices for mounting cutters Executive bodies of mining machines. The objective of the invention is to increase the resistance of the cutters mining machines by increasing their povorotostolizmom. Device for mounting cutters mining machines incorporates the fist with a hole cutter body, a transverse groove and a stop for the shank of the cutter with the annular groove and chamfer and the locking element; further provided with a plunger, made in the form of a spring-loaded rod that interacts with the shank of the cutter, and located in a persistent part of the fist at an angle of 10° to 40 ° to the longitudinal axis of the cutter. 4 Il. The invention relates to the mining industry, namely, devices for mounting cutters Executive bodies of mining machines.Known devices for securing cutters mining machines, including a fist with a transverse groove separating the fist on the support under the cutter holder, and a stop for the shank of a cutter having a protrusion that interacts with the shank of the cutter and clamp. C. N 1046500 IPC5E 21 C 25/45).The disadvantage of this device lies in the fact that in the kinematic cutting angle and clearance angle, therefore, there are always deviations of these angles from their optimum values, which affects the increase in the intensity of the process of destruction.In addition, due to the large difference in the diameters of the cutter and the hole under his fist inevitable large shock load on the cutter and the fist.Closest to the present invention is a device for mounting cutters mining machines, including a fist with a hole cutter body, a transverse groove and a stop for the shank of the cutter with a circular groove and an elastic locking element in the form of a leaf spring with a protrusion having a U-shape in the plane of the longitudinal section of the casing cutter. C. N 876992 IPC5E 21 C 25/46).The disadvantage of this device is that it only creates the conditions for turning the cutter, and does not contribute to its rotation. In addition, the leaf spring does not have sufficient strength and are easily damaged as a result of breakdowns.Thus, the proposed device provides a more intensive rotation unloaded cutting forces and feed cutters, which increases their wear resistance, and more efficient samosatene contributes to reducing the energy intensity of the process ruin the e resistance cutters mining machines by increasing their povorotostolizmom.The solution of this problem is achieved in that the device for mounting cutters mining machines, including a fist with a hole cutter body, a transverse groove and a stop for the shank of the cutter with the annular groove and chamfer and the locking element is further provided with a plunger, made in the form of a spring-loaded rod that interacts with the shank of the cutter, and located in a persistent part of the fist at an angle equal to 10-40oto the longitudinal axis of the cutter.In Fig. 1 shows a device for mounting cutters and shows the relative position of the follower and cutter at the beginning of rotation of the cutter of Fig. 2 - a device for mounting cutters at the end of rotation of the cutter of Fig. 3 is a cross - section along the longitudinal axis of the pusher of Fig. 4 is a cross section of the cutter.Device for mounting cutters mining machines contains the fist 1 with an opening 2 in which is located a cylindrical cutter body 3, a transverse groove 4 stop 5 for the shank of the cutter with the circular groove, the plunger 9, located in the persistent part of the fist at an angle equal to 10-40oto the longitudinal axis of the cutter, with the spring 10 is held by the stopper 11 in the hole 12.The device operates as follows.Cylindrical cutter body is that the cutter to move freely in the hole 2 along its longitudinal axis within the gap between the rear end of the cutter and focus 5.The plunger 9 is inserted into the hole 12 and is based on a set in it the spring 10 is held by the tube 11. The hole 12 is at an angle of 10-40oto the longitudinal axis of the cutter.In the process of work of the Executive authority when entering into contact with the array of cutter 3 under the action of the reaction forces slaughter goes back to the thrust surface of the fist on the magnitude of the gap and utaplivaet the plunger 9 into the hole 12 on the value of S, compressing the spring 10. In this case, due to the presence of the angle between the axes of the cutter and pusher peak of the last commits a relative displacement in the transverse direction on the surface of the bevel 7 on the shank of the cutter, angled its axis, the value of S1=SSin . Because at this point there is no cutting force and feed disjoining cutter 3 in the hole 2 fists 1, when the corresponding stiffness of the spring 10 the moment of friction force generated by the pressing of the plunger 9 to the surface of the bevel 7 on the shank of the cutter is greater than the moment of resistance to rotation of the cutter 3 in the hole 2, and the cutter before cutting manages to turn by an angle corresponding with the absence of slippage of the chord length of the S1.The proposed device is operable at 45o> > 0o the increase of friction force movement of the pusher 7 in the hole 12 and may rasklinivanie. Model tests have shown that the most effective rotation of the cutter (4...6oper stroke of the plunger takes place at = 35o.Due to the fact that the rotation of the cutter occurs before the start of the cutting process and the shoulder 1 of the Annex turning force to the plane of the slice fist is small, for turning the cutter requires efforts by 2-3 orders of magnitude lower than during cutting, when the cutter under the action of cutting forces and supply, attached at its top to a much greater shoulder equal to the overhang of the tool lin, rasklinivanie and clamped in his fist.When the cutter out of contact with the bottom under the action of rationalise spring 10, the pusher 7 moves the cutter forward in the size , sliding on the facet in the opposite direction by the value of S1. Reverse rotation of the cutter does not occur, because the action of the spring to move freely cutter does not provide a pressing plunger to the cutter, sufficient for the emergence of the need to rotate the cutter friction force.Further, when the next input of the cutter in contact with the array process is repeated. Device for mounting cutters mountain howling groove and chamfer and the locking element, characterized in that it is further provided with a plunger, made in the form of a spring-loaded rod that interacts with the shank of the cutter, and located in a persistent part of the fist at an angle equal to 10 - 40oto the longitudinal axis of the cutter.
FIELD: mining industry, particularly for mining operation and construction and repair work performing.
SUBSTANCE: device has rotary cutter with shank and working head having annular support surface. Device also comprises cuter holder having orifice for cutter shank receiving and annular support surface, stop member for cutter shank fixation in cutter holder orifice and thrust member rotary arranged between working head and cutter holder. Thrust member has upper base and lower base carrying projection. Thrust member has additional projection located on upper base thereof and annular support surface cooperating with that of working head. Projection of lower base has annular support surface to cooperate with that of cutter holder. Width of support surface formed on additional projection is 0.15-1.0 of that of support surface of main thrust member projection. Width of support surface formed on additional projection is 0.15-1.0 of that of support surface of working head.
EFFECT: increased service life due to uniformity of cutter rotation during operation, increased reliability due to reduced friction between cooperating surfaces of thrust member, working head and cutter holder.
13 cl, 5 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
SUBSTANCE: tool holder with toolhead has a cutter head in the retainer catch, the said cutler head being designed to receive a cutler capable of being inserted and replaced. The cutter head is mode in the form of a socket and is furnished with a hole for inserting the cutter. The toolhead has fixation side with retainer catch and outer side oriented opposite to the fixation side, so that during tool operation centrifugal forces are directed from the fixation side to the outer one. The retainer catch has an aperture passing through inner wall of the cutter head and forming dimensional connection to the environment, the said aperture opening the cutter head towards the outer side.
EFFECT: prevention of cutter jamming due to rock mass litter getting into the head.
8 cl, 6 dwg
SUBSTANCE: suggested invention is related to the field of mining and construction, in particular to cutters with round tails. Cutter with round tail comprises tail, at the same time tail is retained with the possibility of rotation in clamping cartridge. Clamping cartridge is equipped with one or several retaining elements that protrude inside, which enter circular groove arranged in cutter tail, so that clamping cartridge is retained on round tail of cutter without possibility of shift in axial direction. One or several retaining elements are installed in medium transverse plane of clamping cartridge or have identical axial distance from it. Clamping cartridge is arranged with the possibility of installation in two axial positions turned by 180° around its longitudinal axis on round tail of cutter and fixation on it selectively in one of both identical positions. Retaining elements are arranged between two oriented forming edges across longitudinal axis of clamping cartridge and are stamped and/or impressed inside. Besides forming edges pass along part of clamping cartridge circumference and have distance from each other, which is equal or less than width of circumferential groove in round tail of cutter.
EFFECT: simplified installation of clamping cartridge on round tail of cutter.
11 cl, 4 dwg
SUBSTANCE: equipped with round shank end cutter is held by means of slit clamping sleeve in aperture of cutter holder and is designed to rotate. Also the clamping sleeve is equipped with holding elements stamped and/or pressed inside; the elements are distributed along perimetre of the clamping sleeve and enter into a circular slot made in the round shank end. Two stamped edges directed across lengthwise axis of the clamping sleeve isolate holding elements. Also stamped edges run along part of perimetre of the clamping sleeve and are arranged at distance one from another corresponding to width of the circular slot in the round shank end of the cutter. Notably, the holding elements form coaxial concave centring section facing the convex bottom of the circular slot.
EFFECT: increased operation life of cutter due to increased reliability of fastening.
15 cl, 4 dwg
SUBSTANCE: attachment point of mine cutting tool consists of holder, secured on executive device, of cutter with cone cutting part and rotating shank end secured in holder. The attachment point of the mine cutting tool is equipped with a swinging mechanism kinematically coupled with the shank end of a cutting insertion and made in form of a mechanical trigger facilitating a swivel of the cutter around axis. Also the cutting insertion swinging mechanism corresponds to three bushings inserted one into another and equipped with radial lugs axially tapered on ends.
EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.
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
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: 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: 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.