3917results about "Slitting machines" patented technology

A round-shank bit for a coal cutting machine or the like, having a bit head and a bit shank, wherein the bit head has a bit tip, maintained by a base element in a receptacle of the bit head. Starting at the base element, the bit tip tapers in a direction toward the free end of the bit tip, wherein the base element forms a maximum diameter of the bit tip, and wherein the bit tip has recesses on its outer contour. In order to assure good rotational behavior over the entire length of the operating time, the base element has the recesses on an outer circumference forming the maximum diameter.

A cutting tool has a centrally located tungsten carbide insert brazed into a seat at the forward end of the tool. The seat has a circular mouth and rearward of the mouth is a frustoconical inner wall. At the bottom of the seat is a transverse surface. A tungsten carbide insert is brazed into the seat and the base of the insert is complementary in shape to the seat. A second annular insert may also be brazed into a complementary shaped annular seat that surrounds the centrally located seat.

A cutting bit includes a body having a front surface and a side surface, the side surface including a shoulder below the front surface and extending substantially perpendicular to a central axis of the body, and a ring that is harder than the body attached to the body at a front surface of the shoulder. Wear life of the cutting bit is enhanced by maintaining particular dimensional relationships regarding the position of the ring on the body, and the diameter of portions of the body.

A drilling bit for use in conjunction with a holder that has a bore wherein the drilling bit has a drilling bit body that has an axial forward end and an axial rearward end. The drilling bit body further includes a reduced diameter portion adjacent to the axial rearward end thereof so as to define a reduced diameter surface. A hard insert is affixed to the drilling bit body at the axial forward end thereof. A resilient retainer sleeve has a first thickness and presents an interior surface. The retainer sleeve is carried by the drilling bit body within the reduced diameter portion. The resilient retainer sleeve is in an expanded condition when the drilling bit is not within the bore of the holder and the resilient retainer sleeve is in a compressed condition when the drilling bit being within the bore of the holder. The clearance between the reduced diameter surface of the drilling bit body and the interior surface of the resilient retainer sleeve when the resilient retainer sleeve is in its compressed condition is at least as great as the thickness of the resilient retainer sleeve.

A method of operating coal mine machinery that protects and maintains machine operators' health and well-being removes the machine operators to a clean, low-noise environment inside a refuge chamber. Inside, are controls, cameras, audio, and informational displays needed to run continuous mining machines nearby and communicate mine-wide with other personnel. Cameras fitted to the mining machines provide straight-ahead views, ground penetrating radars fitted to the cutting drums measure the coal depths in the ceilings above, the floors below, and the coal face ahead. Guidance data is presented on informational displays, and the data from the ceilings and floors is used to drive computer graphics special effects to graphically represent the coal ceilings and coal floors overlaying boundary rock. Audio pickups on the mining machine allow the operator to hear and feel how the machine is functioning, just as operators have always employed their other senses.

A wear assembly including an adapter, a wear member, and a lock to secure the wear member to the adapter, wherein the adapter and wear member include at least one rail and corresponding groove along the nose and socket connection that are oriented at the same general inclination as one of the converging walls of the nose.

A tool assembly includes an axially symmetric tool having a tapered forward end, a radial flange, and a cylindrical shank. A retainer is fitted around the cylindrical shank, a washer is fitted around the retainer, and an annular elastomeric member is bonded to the inner surface of the washer. When the rotatable shank is fitted into a cylindrical mounting bore of a tool holder, the annular elastomeric member prevents the washer from rotating with the tool.

A cutting assembly that includes a block that has a body that contains a block bore. A sleeve has a body that contains a bore that has an axial forward end and a forward surface surrounding the bore at the axial forward end thereof. The sleeve further contains at least one scallop beginning at extending in an axial rearward direction from the forward surface. There is a cutting tool rotatably contained within the bore of the sleeve. There is a non-rotatable washer that has a washer body that has a peripheral edge wherein the washer body contains at least one indention adjacent to peripheral edge. The indention of the non-rotatable washer is received within the scallop.

A fixture for attaching a round shank chisel to a road milling machine or the like. The round shank chisel has a chisel head and a chisel shank. With a bearing surface the chisel head rests upon a wearing protection disk which in turn rests on and is supported by a chisel holder. The chisel shank is accommodated by a location bore of the chisel holder. This invention prevents dirt from penetrating the area of the location bore of such a fixture and at the same time ensures that the free movability of the round shank chisel is not impaired. Thus, the chisel holder has a circumferential projection or a circumferential depression which extends along the location bore. Also, the wearing protection disk has a circumferential receiving groove or a circumferential shoulder and the projection or the depression of the chisel holder engages with the receiving groove or the depression of the wearing protection disk when the round shank chisel is assembled.

The present invention is directed to an excavator that is operable in manual and automatic modes and uses state machines to effect unit operations, rotationally offset swing actuators to rotate boom and cutter head, a fail safe hydraulic system to maintain gripper pressure in the event of a malfunction of the hydraulic system, differing position and pressure control functions in the hydraulic actuators, a kinematic module to effect pitch and roll adjustments, a cutting face profile generator to generate a profile of the excavation face, and an optimization module to realize a high degree of optimization of excavator operation.

A cutting tool has tool body with a seat at a forward end thereof. A hard cutting insert is bonded into the seat. The insert is made of a hard material and Ahas an elongate central portion having a maximum upper diameter and a maximum lower diameter that is less than the maximum upper diameter. A collar, also made of a hard material, surrounds the base of the elongate central portion of the insert.

The invention discloses an in-hole drilling tool integrating drilling, slotting and punching a coal seam and a using method thereof. The in-hole drilling tool comprises a water supple device or an air supple device, a high-pressure sealing drill pipe, a slotting and punching valve and a drill bit. The water supply device and the air supply device are connected with the high-pressure sealing drill pipe at an orifice. The slotting and punching valve is installed between the high-pressure sealing drill pipe and the drill bit. The in-hole drilling tool is essentially used for drilling and anti-reflective outburst eliminating after drilling of soft outburst coal seam. The using method is as follows: after the drilling construction is finished, a water supplier with a pressure release valve is used for starting a high-pressure pumping station to improve the pressure and the flux for water supply; high-pressure water current at the pumping station drives the slotting and punching valve to act for closing an axial liquid passage and opening a radial liquid passage; and high-pressure jet current realizes slotting or punching through a cutting nozzle or a punching nozzle. The invention has novel design and easy operation, is safe and reliable, improves the outburst elimination efficiency and realizes the integrated operation of drilling, slotting or punching and outburst eliminating.

A cutting bit for impinging earth strata wherein the cutting bit includes a highly wear-resistant elongate cutting bit body, which has an axial forward end and an axial rearward end, an enlarged dimension head portion at the axial forward end and a reduced dimension shank portion at the axial rearward end. The highly wear-resistant elongate cutting bit body has a maximum transverse dimension and a longitudinal axial length. The cutting bit includes a superhard insert, which is affixed to the head portion at the axial forward end of the cutting bit body. The cutting bit has a slimness ratio, which comprises the ratio of the maximum transverse dimension to the longitudinal axial length wherein the cutting bit exhibits a slimness ratio ranging between about 0.15 and about 0.60.

In one aspect of the invention, an attack tool is disclosed which comprises a wear-resistant base suitable for attachment to a driving mechanism. The wear-resistant base has a shank and a metal segment. A cemented metal carbide segment is bonded to the metal segment and the shank has a wear-resistant surface. The wear-resistant surface has a hardness greater than 60 HRc.

A control system for continuous mining machine to control the mining horizons of roof and floor horizons relative to the rock boundaries of an underground coal seam or ore vein. The mining machine is provided with a cutting drum mounted on a pivoted arm to allow for vertical displacement of the cutter to control the mining height. A plurality of sensors is carried on the rotatable arm to locate the roof and floor boundaries. Attitude sensors are mounted on the machine for providing signals indicative of the inclinations of the body of the machine, and, a microprocessor receives the signals from the boundary sensors and the attitude sensors for calculating the required roof cut and floor cut. A display device receives the signals from the microprocessor and displays the calculated results to the machine operator.

Apparatus and methods of using lasers are provided for spalling and drilling holes into rocks. A rock removal process is provided that utilizes a combination of laser-induced thermal stress and laser induced superheated steam explosions just below the surface of the laser / rock interaction to spall the rock into small fragments that can then be easily removed by a purging flow. Single laser beams of given irradiance spall rock and create holes having diameter and depth approximately equal to the beam spot size. A group of the single laser beams are steered in a controllable manner by an electro-optic laser beam switch to locations on the surface of the rock, creating multiple overlapping spalled holes thereby removing a layer of rock of a desired diameter. Drilling of a deep hole is achieved by spalling consecutive layers with an intermittent feed motion of the laser head perpendicular to the rock surface.

In a self-propelling road milling machine (1), particularly a (recycler or) cold-milling machine, comprising a machine frame (4) carried by a track assemblies (2,3) via lifting columns (12,13), a milling roll (6) supported on the machine frame (4) for treatment of a ground or traffic surface (8), height-adjustable side plates (10) for edge protection, arranged to rest on the ground or traffic surface (8) to be treated, a height-adjustable stripping means (14) arranged in the moving direction behind the milling roll (6) and adapted to be lowered, during operation, into the milling track (17) generated by the milling roll (6), and a control means (23) for controlling the milling depth of the milling roller (6), it is provided that at least one measuring means (16) is operative to detect the lifting, caused by the current milling depth, of a first sensor means resting on the ground or traffic surface (8), and / or the lowering of the stripping means (14) or a second sensor means onto the surface of the milling track (17), the control means (23) obtaining the current milling depth at the level of the stripping means (14) of the milling roller (6) or of the second sensor means from the measurement values of the at least one measuring means (16).

In one aspect of the invention, an attack tool is disclosed which has a wear-resistant base suitable for attachment to a driving mechanism, a first cemented metal carbide segment brazed to the base at a first interface, and a second metal carbide segment brazed to the first carbide segment at a second interface opposite the base. The attack tool also having a braze material disposed in the second interface with 30 to 62 weight percent of palladium.

A cutting assembly that includes a block that has a body that contains a block bore. A sleeve has a body that contains a bore that has an axial forward end and a forward surface surrounding the bore at the axial forward end thereof. The sleeve further contains at least one scallop beginning at extending in an axial rearward direction from the forward surface. There is a cutting tool rotatably contained within the bore of the sleeve. There is a non-rotatable washer that has a washer body that has a peripheral edge wherein the washer body contains at least one indention adjacent to peripheral edge. The indention of the non-rotatable washer is received within the scallop.

There are provided high power laser and laser mechanical earth removing equipment, and operations using laser cutting tools having stand off distances. These equipment provide high power laser beams, greater than 1 kW to cut and volumetrically remove targeted materials and to remove laser affected material with gravity assistance, mechanical cutters, fluid jets, scrapers and wheels. There is also provided a method of using this equipment in mining, road resurfacing and other earth removing or working activities.

In one aspect of the present invention, a high impact resistant tool, having a super hard material is bonded to a cemented metal carbide substrate at a non-planar interface. The cemented metal carbide substrate is bonded to a front end of a cemented metal carbide segment. A stem is formed in the base end of the carbide segment opposite the front end and the carbide stem is press fitted into bore of a steel body.

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and / or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and / or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.

Wearing element with enhanced wear resistance related to wearing elements, such as cast steel teeth to be specially used in machinery for earth-moving, ground-engaging and / or rock-loading applications, as well as to inserts to be included within the wearing elements, to enhance their wear resistance thus prolonging their service life.

A road milling machine having a milling roller with a plurality of chisels. A signal receiving unit is assigned to a machine component which is directly or indirectly involved in the milling process or to another machine component. The signal receiving unit detects an operating condition of the machine component and is connected to a signal emitting unit. An optical detecting device may be assigned to the road milling machine, whereby operations are made easier and the milling pattern is optimized.

In one aspect of the invention, an attack tool has a wear-resistant base suitable for attachment to a driving mechanism. A first end of a generally frustoconical first cemented metal carbide segment bonded to the base. A second metal carbide segment is bonded to a second end of the first carbide segment at an interface opposite the base. The first end has a cross sectional thickness of about 0.250 to 0.750 inches and the second end has a cross sectional thickness of about 1 to 1.50 inches. The first cemented metal carbide segment also has a volume of 0.250 cubic inches to 0.600 cubic inches.

In one aspect of the invention, a tool has a wear-resistant base suitable for attachment to a driving mechanism and also a hard tip attached to an interfacial surface of the base. The tip has a first cemented metal carbide segment bonded to a superhard material at a non-planar interface. The tip has a height between 4 and 10 mm and also has a curved working surface opposite the interfacial surface. A volume of the superhard material is about 75% to 150% of a volume of the first cemented metal carbide segment.

A coal-mining machine uses a ground-penetrating radar based on a software-definable transmitter for launching pairs of widely separated and coherent continuous waves. Each pair is separated by a constant or variable different amount double-sideband suppressed carrier modulation such as 10 MHz, 20 MHz, and 30 MHz. Processing suppresses the larger first interface reflection and emphasizes the smaller second, third, etc. reflections. Processing determines the electrical parameter of the natural medium adjacent to the antenna. Deep reflections at 90-degrees and 270-degrees create maximum reflection and will be illuminated with modulation signal peaks. Quadrature detection, mixing, and down-conversion result in 0-degree and 180-degree reflections effectively dropping out in demodulation.

In one aspect of the present invention, a high impact resistant tool has a superhard material bonded to a cemented metal carbide substrate at a non-planar interface. The cemented metal carbide substrate is bonded to a front end of a cemented metal carbide segment. A stem formed in the base end of the carbide segment opposite the front end is press fit into a bore of a steel body. The steel body is rotationally fixed to a drum adapted to rotate about its axis.