Abstract: A solid end mill is rotatable around a central rotational axis and includes a cutting portion having a plurality flutes with peripheral cutting edges formed between associated rake surfaces and clearance surfaces. The peripheral cutting edge forms a convexly curved lobe cutting edge portion disposed along an axial front part of the cutting portion. A neck cutting edge portion is connected to the lobe cutting edge portion and is disposed along an axial intermediate part of the cutting portion. A shoulder cutting edge portion is connected to the neck cutting edge portion and is disposed along an axial rear part of the cutting portion. The peripheral cutting edge extends at a linear and constant axial inclination angle ? within the range 5°???15°. The rake surface forms positive radial rake angles ?L,N,S along the entire extension of the peripheral cutting edge.

Abstract: A turning method for a computerized numerical control lathe includes providing a turning tool having a cutting portion, the cutting portion including a first nose portion, the first nose portion including a first cutting edge, a second cutting edge, and a convex nose cutting edge connecting the first and second cutting edges, wherein the first and second cutting edges are straight or substantially straight in a top view. The method further includes providing a metal work piece, rotating the metal work piece around a work piece rotational axis, and making a first pass where the first cutting edge is active and the second cutting edge is inactive. A first machined surface is generated by the convex nose cutting edge, and during at least a portion of the first pass, an entering angle and an angle, which the first cutting edge forms with the work piece rotational axis, simultaneously varies.

Abstract: A turning tool includes a tool body, insert seat and a turning insert. The turning insert has a top surface and an opposite bottom surface, a reference plane between the top and bottom surfaces, and a center axis intersecting the top and bottom surfaces. A circular cutting edge of the insert is concentric in relation to the center axis. The bottom surface includes a set of radial grooves and a set of flat surfaces. The flat surfaces extend in a plane parallel to the reference plane. The insert seat includes a bottom surface and a rear surface. The bottom surface of the insert seat has a first ridge and a support surface, wherein at least one of the flat surfaces of the turning insert is in contact with the support surface. A cross-section of the first ridge is smaller than a corresponding cross section of one of the radial grooves.

Abstract: An inlet tube of a sampling device, a rock drilling rig, and a method for taking samples is provided. The inlet tube is mountable to a dust collecting system of a rock drilling rig and is provided with at least one actively controllable homogenizing element forming a physical element for generating disturbance in flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.

Abstract: A method for establishing communication between a control node and a machine in a machine tool system includes notifying the control node of an identifier of the machine. The machine includes a numerical control (NC). The method further includes the steps of retrieving a machine configuration file including machine attributes at the control node based on the identifier; determining a data structure of a data signal transferring information in the machine tool system by interpreting the machine configuration file; and acknowledging from the control node to the machine that communication has been established.

Abstract: An apparatus, method and computer program product for controlling flushing in rock drilling, and a rock drilling rig. The apparatus includes a control unit and a computer program for controlling feeding of a liquid component in an air mist flushing system in response to detected penetration rate of executed drilling. An operator may set a desired moisture target value for drilling cuttings removed from a drill hole and the control system automatically adjusts the flushing system to control the feeding of the liquid component.

Abstract: A method for generation of a boom trajectory for automated boom positioning includes the steps of receiving target pose data indicative of at least target position of a first boom object of the boom for positioning a work machine of the mine vehicle to a target pose in accordance with a mine work plan, receiving geometry data of the first boom object, the geometry data being mapped with start pose data indicative of the start position and orientation of the first boom object, receiving obstacle data, selecting trajectory generation locations for the first boom object, and generating, before starting positioning of the work machine for the target pose, a positioning trajectory for each of the selected trajectory generation locations on the basis of the target pose data, the geometry data, the start pose data, and the obstacle data.

Abstract: An apparatus for injecting grouting material, a mining machine and a method of reinforcing rock surfaces by a grouting material is provided. The apparatus includes an injector head provided with a mixing device, which are both insertable into a drilled hole. The apparatus is for feeding resin mixtures having two different setting times. The injector head is connected to a fluid inlet arrangement having a common first feed line for slow and fast resin base components and a second feed line for a resin catalyst.

Abstract: A homogenizer for homogenizing flow, a rock drilling rig, and a method for taking samples is provided. The homogenizer is mountable to a dust collecting system of the rock drilling rig and is arranged for effecting on the flow, which contains air and drilling cuttings. The homogenizer includes a channel part through which the flow is directed and at least one air jet for directing air blows to the flow for generating disturbance in the flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.

Abstract: A method for resonance analysis of a vibrating machine, in particular a vibrating screen or a vibrating conveyor, including the following steps during operation:—determining an operational vibration signal, which includes the vibrations of the machine in regular operation,—exciting the vibrating machine during operation by an excitation signal for exciting additional vibrations on the vibrating machine,—measuring a response vibration signal of the vibrating machine in response to the excitation,—determining a subtraction signal by using the operational vibration signal as a correction signal which is subtracted from the response vibration signal, and—carrying out frequency analysis of the subtraction signal, the dominant frequencies of the subtraction signal corresponding to the natural frequencies of the system in the frequency range of the excitation signal.

Abstract: A fastening arrangement in the form of a pin and sleeve combination is provided for fixing one or more screening media modules on top of screen support panel structure. The fastening arrangement includes a pin capable of being screwed into a sleeve, the pin being provided with engagement elements capable of connecting with complementary projections on a handling tool for facilitation of installing and dismantling the fastening arrangement. A method for fastening the screening media module on to the screen support panel structure, and a screening equipment housing the same for separating solid materials according to size is also provided.

Abstract: An apparatus, method and computer program product arranged for receiving information on a path to be followed by a drilling rig, the path including a trigger position, determining a position of the drilling rig, instructing the drilling rig to follow the path based on a first reference point associated with the drilling rig, activating, in response to determining that the position of the drilling rig corresponds to the trigger position, a second reference point associated with the drilling rig, and instructing the drilling rig to stop in response to determining that a position of the second reference point corresponds to a target position.

Abstract: A machining tool for chip-removing machining includes a tool body and a generator assembly for harvesting electric energy to be used in the tool. At least one first component is secured to the tool body and a second component is movably connected to the tool body so as to, by moving with respect to the first component through interaction therewith, generate electric energy in the first component. The generator assembly includes an arrangement for conducting a medium flow to hit and act upon the second component for moving it with respect to the first component.

Abstract: A drilling assembly for percussive drilling includes at least two of a drill bit, a drill rod and a guide adapter. A peripheral surface of the shoulder on the drill rod is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit or the mounting sleeve of the guide adapter, and/or the peripheral surface of the shoulder on the guide adapter is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit.

Abstract: A method of producing a composite product having cemented carbide tiles embedded in a metal surface thereof, a cemented carbide tile suitable for use in the method and a composite product including such cemented carbide tiles is provided. A mould for casting the product is prepared. Cemented carbide tiles having through holes or recesses are placed at desired surfaces of the mould and secured to the desired surfaces of the mould by fastening elements, such as nails or pins, such that at least part of an elongated body of each respective fastening element protrudes out from respective openings of each through hole or recess facing the mould surface and into the material of the mould to secure the respective cemented carbide tiles in place. Molten metal is poured into the mould to cast the composite product, the casting of which is removed after solidification.

Abstract: A milling tool includes an internal indexing mechanism arranged to displace an indexable cutting insert between an inner supported position and an outer indexing position. The indexable cutting insert has a multi-sided shape as seen in the direction of an insert centre axis and side support surfaces are included in the sides of the multi-sided indexable cutting insert. The internal indexing mechanism is arranged to provide a rectilinear movement along the shaft centre axis, between the inner supported position and the outer indexing position, wherein the indexable cutting insert is free to turn in both directions around the insert centre axis in the outer indexing position. An external indexing device for the milling tool and an indexing system is also provided. A disc member is configured with an annular geometry arranged to engage one of the side support surfaces and turn the indexable cutting insert toward the next index position.

Abstract: A rock drill insert made of cemented carbide includes hard constituents of tungsten carbide (WC) in a binder phase of Ni—Cr, or Ni—Co—Cr, and a balance of WC and unavoidable impurities. The cemented carbide has a 3.5-18 wt % binder phase. The binder phase has >0 wt % Ni. The mass ratio Cr/(Ni+Co) is 0.02-0.19. A difference between the hardness at 0.3 mm depth at some point of the surface of the rock drill insert and the minimum hardness of the bulk of the rock drill insert is at least 30 HV3.

Abstract: An apparatus, rock drilling rig, method and computer program for executing navigation for a rock drilling rig in a mine tunnel. The rock drilling rig is positioned at faces of rounds and is navigated before initiating drilling. The navigation is executed without a predetermined tunnel line. The realized tunnel line is formed by combining navigation data on several rounds. Length and direction of the round to be drilled next may be adjusted according to need.

Abstract: A pressure accumulator, rock breaking machine and method of storing pressure energy. The accumulator includes a casing and an elastic membrane arranged inside the casing. The membrane divides an inner space of the casing into two separate pressure spaces. A gas space is prefilled with pressurized gas. On the opposite side of the membrane is a hydraulic space for receiving hydraulic fluid. The membrane is a hat-like element having side walls, a mounting flange at its open end and a closed top end. The mounting flange of the membrane is mounted between the casing and a flange element. The accumulator is without a screen. The flange element is provided with a sealing for sealing a piston.

Abstract: A method is provide, which includes the steps of receiving a three-dimensional tunnel model of an underground tunnel system of a worksite, receiving two-dimensional position data having sets of x coordinate values and y coordinate values of a mobile device in the underground tunnel system, performing a vertical plane ray cast operation in the tunnel model at a mobile device position defined by an x coordinate value and an y coordinate value in the received position data, and determining a z coordinate value for the mobile device position on the basis of the ray cast operation and at least one earlier resolved z coordinate value for a preceding mobile device position.