Abstract: A double-sided, indexable, polygonal turning insert includes a plurality of corners, a peripheral clearance surface, and identical upper and under sides. Along the upper side and underside, primary cutting edges, which individually include a nose edge situated in a corner and two main edges, converge toward the same and transform into auxiliary cutting edges, which separate each pair of primary cutting edges along one and the same side. Chip-directing guide surfaces are placed inside the chip surfaces of the cutting edges. The primary cutting edge has a generally positive cutting geometry such that a wedge angle of the cutting edge between the chip surface and the clearance surface is acute in arbitrary sections along the nose edge, as well as along the two main edges. In such a way, the primary cutting edge produces chips that can be guided in a careful, although distinct, way by the guide surfaces.

Abstract: A method for initiating a remote operation mode of a work machine, the method including providing the work machine with a work machine-specific safety key; receiving, at a remote control station, a notification from the work machine in response to initiating the remote operation mode of the work machine by said safety key; acknowledging the work machine as being included in a safety system of the remote control station; and configuring the remote control station to start the remote operation mode of the work machine.

Abstract: A percussive rock drill bit has a head and a shank in which a plurality of flushing grooves extend radially outward and axially rearward from a front face. The flushing grooves are configured to optimize the axially rearward flow of rock particles and fines entrained in the flushing fluid. In particular, each groove is generally convex relative to a longitudinal axis of the drill bit and is declined continuously relative to the axis from a first groove end to a second groove end.

Abstract: A method of determining position and direction of an object of a mine vehicle, the mine vehicle including at least one scanning device for scanning surroundings of the mine vehicle and producing a point cloud data. The mine vehicle has a control unit, which is provided with reference data on the monitored object. The control unit is configured to search the monitored object from the scanned point cloud data and to determine position and direction of the object.

Abstract: An arrangement for controlling the process of rotary chip removing machining of a work piece includes a monitoring system for monitoring the rotary chip removing machining. The monitoring system has at least one surface acoustic wave sensor and at least one first antenna mounted to a cutting tool. At least one second antenna is arranged for wireless communication with the second antenna. Each sensor detects at least one parameter of a group of parameters consisting of strain, temperature and pressure. The sensor and the first antenna transmit the detected at least one parameter to the second antenna in response to an interrogation signal received by the first antenna. A processing unit is connected to the second antenna and transmits the interrogation signal and transmission energy to the first antenna and to the sensor via the second antenna. A control system communicates with the monitoring system to control the machining of the work piece at least partially based on the detected parameter.

Abstract: The invention relates to a drill bit (20) for percussive rock drilling, which comprises: —a drill head (21); —a skirt (24), which has a first end and an opposite second end, the skirt being connected to the drill head at said first end; —a recess (25) extending axially through the skirt from the second end of the skirt towards the first end thereof, the recess being provided with an internal, cylindrical female thread (26); and —an impact surface (27) at the bottom of the recess. Every cross-section of the recess (25) between the impact surface and the part of the recess where the female thread has its full thread profile has a cross-sectional area which is smaller than the cross-sectional area of a cross-section of the recess at the part of the recess where the female thread has its full thread profile.

Abstract: A mining vehicle including a movable carrier, at least one boom having a plurality of boom joints, several boom actuators for moving the boom in different positions, at least one mining work device being arranged at a distal portion of the boom, and at least one control unit for controlling the position of at least one of the boom and the mining work device. The mining vehicle further including observing device for obtaining information indicative of a position of at least one of the boom and the mining work device in which collision to an obstacle can be avoided. The control unit is configured to control the position of at least one of the boom and the mining work device in response to the obtained information to avoid hitting the obstacle when the mining vehicle moves.

Abstract: A rock drilling apparatus and method for controlling the orientation of a feed beam of a rock drilling apparatus including a carrier, a drilling boom attached at a first end to the carrier, a feed beam attached turnably to a second end of the drilling boom, a drilling unit attached movably along the feed beam, and a support attached to the feed beam for supporting the drilling boom on the ground. The orientation of the boom and feed beam are adjusted to compensate for the orientation change caused by driving the support onto the ground.

Abstract: An annealing furnace for annealing a strand of steel. The annealing furnace including a first heating apparatus for heating the strand during operation of the annealing furnace. A transport device advances the strand in a direction of transport through the annealing furnace during operation of the annealing furnace. The annealing furnace also includes a first cooling device for cooling the outer surface of the strand with a gas guide in the direction of transport behind the first heater, wherein the gas guide is arranged in such a manner that a gas flows along the outer surface of the strand during operation of the annealing furnace for cooling the strand.

Abstract: A crusher feed distributor for mounting at a crusher input hopper of a crusher. The feed distributor includes a guide body to contact and distribute the flow of feed material and a mounting assembly to mount the guide body at the input hopper. The mounting assembly is specifically configured with a plurality of independent mounts that collectively provide four adjustments and decrease of freedom corresponding to three lateral adjustments and one rotational adjustment.

Abstract: A mining vehicle includes electric components, devices or machines operating at alternating voltage and having a specific nominal voltage. Power is fed to the mining vehicle from an alternating current network with a specific voltage level. The mining vehicle further includes a transformer arranged to transform the voltage level of the alternating current network into the nominal voltage. When a voltage higher than the nominal voltage is fed to the transformer, the transformer lowers this higher voltage to the nominal voltage. When a voltage lower than the nominal voltage is fed to the transformer, the transformer raises the voltage to the nominal voltage. The transformer is arranged to feed the electric component, device or machine both when a voltage lower than the nominal voltage is fed to the transformer and when a voltage higher than the nominal voltage is fed to the transformer.

Abstract: A parting tool for the chip removing machining of metal blanks includes a blade and a replaceable cutting insert mounted in a seat, which is delimited between a bottom support and an elastically resilient clamping finger. The cutting insert includes an upper side, in which there is included a front rake surface, as well as an application surface positioned behind the same and against which the clamping finger is pressed. In the clamping finger, a flushing channel is included to spray a cooling medium toward the rake surface. A front nose of the clamping finger facing a shoulder is formed between the rake surface and the application surface and has the purpose of protecting the nose from chips. The shoulder has two knobs mutually separated by a central notch, via which cooling medium can pass from the flushing channel toward the rake surface.

Abstract: A milling insert having an upper side, an under side, a clearance face disposed between the upper and under side, and at least one cutting edge that includes two main edges, which converge toward a nose edge. The cutting edge is formed between two ground part surfaces situated on both sides of a cutting edge line, by on one hand, a primary clearance surface, which is included in the clearance face and is off-plane from a lower, secondary clearance surface, and, on the other hand, a peripheral chip surface, which is included in the upper side and situated on a higher level than a land disposed inside, and which is narrower than the primary clearance surface and has a width of at least 0.3 mm. The milling insert may advantageously be used in milling tools for gear hobbing.

Abstract: A device for the conveying of material excavated in underground workings in a mine road stretch including a belt conveyor system which has an endless conveyor belt having a conveyor section which is continually extendible along a conveyor stretch in step with the rate of advance. The belt conveyor has at least one first support device and a plurality of inter-coupled conveyor belt vehicles movable in the longitudinal direction of the conveyor stretch, each carrying support elements. Arranged between the first support device and the plurality of conveyor belt vehicles is a second movable support device for coupled to the first support device and including guide means for the introduction of conveyor belt vehicles into the conveyor stretch. At least one part of the conveyor belt vehicles arranged in the conveyor stretch are guided in movable guide frame elements in the longitudinal direction of the conveyor stretch.

Abstract: The disclosure relates to a mining vehicle and a method of moving a boom of a mining vehicle. The boom is provided with several boom joints and there is a mining work device at a distal end of the boom. One or more boom joint positions are determined and stored in a memory medium. A control unit of the mining vehicle may automatically move the boom to a predetermined transport position.

Abstract: An indexable cutting insert includes at least two side edges each defining an indexable edge of the insert and at least two cutting teeth are on each indexable edge. The cutting insert includes locating means on a plane of the upper face and/or a plane of the lower face. When mounted on a material removal tool, the locating means cooperate with receivers on the working face of the material removal tool to constrain degrees of freedom of the cutting insert. Further, the mounted cutting inserts each locate the radial edge of the cutting teeth in the active position on a common circumference of a circle centered on an axis of rotation of the material removal tool. A mounting system per see is also disclosed as well as a method of removing material from a workpiece with the material removal tool.

Abstract: A tool for cyclo-palloid gear hobbing includes a head and a plurality of milling inserts protruding from a front side thereof. The milling inserts are mounted, two by two, in chip removal units that are detachably connected to the head. Each milling insert is clamped by a wedge and a screw that are easy to access. The wedge acts tangentially against the milling insert behind which there is a tangential support in the form of a shoulder. By clamping the milling insert with a respective wedge the milling inserts can be mounted and dismounted in a simple way, and each group of wedge+milling insert+tangential support can be located tangentially and thereby efficiently carry the cutting forces acting on the milling insert. In further aspects, an insert holder intended for the tool, a chip removal unit of an insert holder and an insert kit are disclosed.

Abstract: A milling tool is equipped with milling inserts, below which there are disposed shim plates, the primary function of which is to protect the basic body of the tool in the event of insert breakdowns. The shim plate is formed with a protuberance, in which an auxiliary cutting edge is included, which, in the assembled state of the tool, is located along an inactive cutting edge, which is situated radially inside an active chip removing cutting edge. By means of the auxiliary cutting edge, the milling tool can be utilized for ramping operations without risk of the inactive cutting edge of the milling insert being damaged.

Abstract: A down-the-hole hammer drill bit assembly includes a foot valve and a drill component having respective abutment regions in the form of cooperating lugs and shoulders that may be engaged by rotation of the valve relative to the drill bit component to allow the lugs and shoulders to overlap radially to lock the valve at the drill component. The assembly is advantageous to allow coupling and decoupling on-site without the need for specific swaging or hydraulic/pneumatic assembly tools.

Abstract: A coated cutting tool comprising substrate and a coating, wherein the coating comprises a layer of MTCVD TiCN, and a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation, the (hkl) reflections used are (012), (104), (110), (113), (116), (300), (214) and (0 0 12), and the TC(0 0 12) is higher than 5 and a full width half maximum (FWHM) of a rocking curve peak of the (0 0 12) plane of the ?-Al2O3 is lower than 30°.