Abstract: A hammer includes a jacket, which includes an inner chamber, an inlet circuit for entry of compressed air, and an outlet circuit for exit of compressed air. The hammer further includes a motion mechanism, for generating a vibratory motion under the action of compressed air; and a punch or beater, connected to the motion mechanism, for coming into contact with the casting to be de-cored, forming a first end of the hammer. The inlet circuit includes an inlet connector for connecting the hammer to a compressed-air circuit; the inlet connector being located at a second end of the hammer, opposite to the end where the punch or beater is located. The outlet circuit has an outlet connector for connecting the hammer to an air recovery circuit. The outlet connector is located at the second end of the hammer, in proximity to the inlet connector.

Abstract: The present invention is directed to a molten metal transfer system. The system includes a pump having interchangeable low flow and high flow impellers and selective low flow and high flow transfer troughs.

Abstract: A transfer pump system has a pump base with a pump chamber, tangential discharge and an outlet. A riser tube extends from the outlet and terminates at a launder in order to move molten metal out of a vessel with relatively little turbulence. A riser tube for use in the system has a proximal end configured to be connected to the outlet and a distal end that terminates at or above the launder.

Abstract: The present specification relates to a metal nanoparticle. Specifically, the present specification relates to a metal nanoparticle having a cavity.

Abstract: A sintering apparatus (4) for sintering at least one workpiece (2), more particularly a dental workpiece, having a sintering chamber (18) for receiving the sintering workpiece (2) during sintering, wherein the sintering chamber (18) is delimited by a base surface (6) of the sintering apparatus (4) on which the workpiece can be placed during sintering, wherein the sintering apparatus (4) has at least one gas feed (5) for introducing protective gas into the sintering chamber (18), wherein the gas feed (5) is on the side of the base surface (6) that faces away from the sintering chamber (18) and the base surface (6) has at least one flow-through portion (14) which is permeable to the protective gas to allow the protective gas coming from the gas feed (5) to pass into the sintering chamber (18).

Abstract: A method for manufacturing a high melting point metal based object includes providing pure high melting point metal based powder, fabricating a green object from the powder, by way of a laser sintering technique, providing infiltration treatment to the green object, and providing heating pressure treatment to the green object. The temperature to the green object is controlled to the re-sintering point of the green object.

Abstract: An engaging member, a female member and a tool changer that can be downsized are provided, and the engaging member is an engaging member including: an engaging surface that allows a cam provided in a male member to engage therewith; and a dispersing surface that transmits a force provided from the cam via the engaging surface, to a female member body, wherein the dispersing surface includes a first dispersing surface and a second dispersing surface perpendicular to each other, and a cross-sectional shape perpendicular to a longitudinal direction is formed in a substantially triangular shape by the dispersing surface and the engaging surface.

Abstract: A flange removal tool assembly includes a cutting tool actuator, vise, annular cutting tool, and center support and accurately removes a weld and a flange of a device, while the device is attached to a fitting in a pressure vessel. Once the weld and the flange are removed, the device can be removed from the fitting and replaced. The assembly allows the operator to quickly inspect the flange of the device during the removal process and reduces the probability of damaging a flange of the fitting.

Abstract: A milling device is rotatable in one direction around a longitudinal center axis defining a forward direction and an opposite rearward direction, and includes a front part and a rear part. The front part has cutting edges, each having a longitudinal extension, and chip flutes, each having a longitudinal extension. The front part is made of a monolithic piece of ceramic. The rear part is configured to be fixed in a rotatable tool body or a rotatable chuck. The rear part is also made of a monolithic piece of cemented carbide. A front end surface of the rear part has a smaller area than a rear end surface of the front part. The front end surface of the rear part and a rear end surface of the front part are permanently bonded or brazed to each other by a joint.

Abstract: A cutting insert has a first (top) end surface, a second (bottom) end surface, a peripheral side surface connecting the top and bottom end surfaces, and a mounting hole having a central axis O which penetrates the top and bottom end surfaces. Cutting edges are formed on an intersecting edge between the first end surface and the peripheral side surface. The second end surface has an inclined part. When a virtual plane substantially perpendicular to the axis O and passing through any point of the cutting edges is defined, the inclined part is inclined so as to be more distant from the virtual plane, heading from the peripheral side surface to the axis O. A projected part projected in a direction along the axis O is formed in an area around the mounting hole in the inclined part. This reinforces the strength of the mounting hole.

Abstract: A power miter saw is provided with a base including positioning apertures; a table rotatably mounted on the base and including an arm projecting forward; a saw blade and motor mechanism configured to rotate a circular saw blade thereof; a pivotal positioning seat interconnecting two linear guide mechanisms and a support seat at a rear end of the base; a connecting seat interconnecting the linear guide mechanisms to the saw blade and motor mechanism; a locking device; and a positioning device. Knob rotation and button pressing may adjust a rotational position of the table.

Abstract: A diamond wire cutter, using an adjustable length pulley system, a diamond wire saw, and a movable pulley cart, can perform a through-cut of complete sections of a structure such as a tubular subsea by fitting a chain about an outer surface of the structure, securing the chain to the movable pulley cart and using the chain to move or otherwise guide the movable pulley cart about the outer circumference of the structure to cut while using a diamond wire to effect a cut between the movable pulley cart and the diamond wire saw.

Abstract: A tool which can be used for gear manufacturing machining of a workpiece may be dressed on a dressing machine, and the dressing may take place with line contact between the dresser and the tool. A specific modification of the surface geometry of the tool is produced by the suitable selection of the position of the dresser with respect to the tool during dressing. The specific modification of the surface geometry of the workpiece is specifiable with regard to various parameters.

Abstract: A method of printing solder paste on a substrate through minute apertures in a mask member, in which the solder paste is supplied to the apertures of the mask member under less than atmospheric pressure and has a viscosity so that the solder paste is filled in the apertures under atmospheric pressure. It is preferable that the solder paste has a viscosity of 50 through 150 Pa·s and a thixotropic ratio of 0.3 through 0.5. Further, the solder paste is obtained by mixing a flux containing solvent having a boiling point such that volatilization thereof is suppressed under the less than atmospheric pressure and solder powders. It is preferable that in the flux, the solvent having the boiling point of 240° C. or more is used and the solvent is octanediol.

Abstract: A system for joining at least two components by welding includes a magnetic base for receiving the components for welding and a flexible magnetic member configurable to correspond to a weld path defining a weld joining the components. The flexible magnetic member exerts a retention force on the components in response to a magnetic field produced by selective activation of the magnetic base. The system can include a magnetic locating element positioned adjacent a perimeter edge of the component to be welded, for generating a repulsive magnetic force between the flexible magnetic member and the magnetic locating element to locate the flexible magnetic member relative to the perimeter edge and provide clearance for a welding device to access a continuous weld path defined by the perimeter edge, such that the welding device can form a continuous weld along the weld path. A welding method using the system is provided.

Abstract: A welding system and a method of control. The welding system may include a weld gun that may have an induction coil and a guide sleeve. The induction coil may heat a welding electrode in the weld gun. The guide sleeve may inhibit the welding electrode from engaging the induction coil.

Abstract: A nozzle assembly for a welding torch, a welding torch that includes said nozzle assembly, and a method of using the welding torch is provided. The nozzle assembly generally comprises an insulator having a plurality of grooves around an outer periphery, a plurality of sealing members disposed within the grooves of the insulator; and a nozzle body slip-fit around the insulator, such that at least one of the insulator and the nozzle body define position indicia.

Abstract: Embodiments of the present invention include a plasma cutting system having a plasma cutting power supply. The plasma cutting power supply outputs a pierce current which is higher than a maximum operational current rating for a torch for the cutting operation for a determined duration. After the expiration of the duration the output current is reduced to a cutting current level. Embodiments allow for the cutting of thicker materials than known systems.

Abstract: A height position of a surface of a wafer can be detected accurately and stably without being affected by variation in a thin film formed on the surface of the wafer. An AF (autofocus) device irradiates the surface of the wafer W with an AF laser beam, detects reflection light thereof for each wavelength with a detection optical system. An AF signal processing unit outputs a displacement signal indicating displacement of the surface of the wafer to a control unit on the basis of a detection result of the detection optical system. Moreover, the AF device includes a focus optical system disposed in an irradiation optical path which is an optical path from the light source unit to a light converging lens. The focus optical system adjusts a light converging point of the AF laser beam in a wafer thickness direction.

Abstract: An apparatus for processing a micro-component by using laser which defines a hole by using laser irradiated to a surface of an object to be processed, the apparatus includes a laser irradiation part irradiating the laser, an optical axis horizontal movement part horizontally moving an optical axis of the laser irradiated from the laser irradiation part, an optical axis angle adjustment part adjusting an angle of the optical axis of the laser horizontally moved by the optical axis horizontal movement part, a reflection part reflecting the laser of which the angle of the optical axis is adjusted by the optical axis angle adjustment part, and a light collecting lens collecting the laser reflected by the reflection part on the surface of the object to be processed.

Abstract: A part of a glass layer 103 disposed along a region to be fused R is irradiated with a laser beam L1, so as to form the glass layer 103 with a laser-absorbing part 108a having a high laser absorptance. Then, while using the laser-absorbing part 108a as an irradiation initiation position, the region to be fused R is irradiated therealong with a laser beam L2, so as to melt the glass layer 103 and fix the glass layer 103 onto a glass member 104. Since the irradiation initiation position for the laser beam L2 has already become the laser-absorbing part 108a, a stable region where the melting of the glass layer 103 is stable can be formed immediately from the start point for initiating the irradiation with the second laser beam or nearby. The glass member 104 is fused to a glass member 105 through the glass layer 103 having such a stable region formed throughout the region to be fused R, so as to yield a glass fusing structure 101.

Abstract: A deposition head for additive manufacturing may include a material feeder including a first feeder to deposit a first feed material to a growth surface, and a second feeder to deposit a second feed material to the growth surface, and an electromagnetic energy source to direct electromagnetic energy to the growth surface, wherein the electromagnetic energy forms a melt pool on the growth surface, and wherein the melt pool may include at least one of a molten first feed material and a molten second feed material.

Abstract: A lead-free, antimony-free solder alloy_suitable for use in electronic soldering applications. The solder alloy comprises (a) from 1 to 4 wt. % silver; (b) from 0.5 to 6 wt. % bismuth; (c) from 3.55 to 15 wt. % indium, (d) 3 wt. % or less of copper; (e) one or more optional elements and the balance tin, together with any unavoidable impurities.

Abstract: Provided are a Cu core ball and a cu core column, which achieve dropping strength and strength against heat cycle. The Cu core ball (1) contains a Cu ball (2) made of Cu or a Cu alloy and a solder layer (3) which is made of a solder alloy composed of Sn and Cu and covers the Cu ball (2). The solder layer (3) contains not less than 0.1% through not more than 3.0% of Cu and the remainder is composed of Sn and impurities.

Abstract: Flux cored welding electrodes comprise a iron based metal sheath and either a flux or metal core within the sheath, enclosing core ingredients. The core ingredients and sheath together comprise, in weight percentages based on the total weight of the electrode, very low levels of manganese. While having low levels of manganese the electrodes satisfy the strength and safety requirements required of commercial electrodes. Embodiments contain manganese in the range of 0.09 to 0.19% by weight of the electrode, along with other components.

Abstract: An adjustable roll and support mechanism for elongate objects having a round cross-sectional configuration has a support base having a pair of parallel upright tubular members having rigid or collapsible support legs. Elevation posts are positioned in movable telescoping relation within respective tubular members and support a roll positioning head having an internal roll positioning mechanism. A pair of roll assemblies are movably supported on the roll positioning head. Lock rings are positionable at a locking position to restrain downward movement of the elevation posts relative to the tubular members and are positionable at a release position permitting downward movement of the elevation posts. Lock ring stops are mounted to a transverse structural member and are positioned to prevent the lock rings from becoming bound after being struck by a lock release mechanism.

Abstract: A method is provided of custom manufacturing a valve body having an initial valve body configuration having a first end connection and a second end connection. The method includes adding material to the first end connection using a first additive manufacturing process to create at least a portion of a custom first end connection configuration, and the custom first end connection configuration is different than an initial first end connection configuration. The method further includes adding material to the second end connection using a second additive manufacturing process to create at least a portion of a custom second end connection configuration, and the custom second end connection configuration is different than an initial second end connection configuration.

Abstract: A feed unit is used to feed connection elements from a receiving position to a transfer position along a feed direction. The feed unit has a receiving part to which each connection element can be fed individually. A head piece is movably mounted in the receiving part and has a receiving region for the nuts, and a thrust unit to move the head piece. The head piece is rotated from a first rotational position into a second rotational position, being reached in an intermediate position, by a rotary device. A slider element moves relative to the head piece out of the intermediate position into a transfer position within the head piece such that the nuts are brought out of the head piece into the transfer position. The rotary device has a mechanical forced guidance unit which includes a control sleeve with a curved path into which a control element engages.

Abstract: A tensioning device for elongating a screw assembly, provided with threaded bolt and threaded nut supported on a fixed substructure, by applying a traction force to a free threaded end of the threaded bolt has a cylinder housing with internal wall and a piston movable in the cylinder housing in longitudinal piston direction. The piston together with the internal wall delimits a hydraulic operating space. A replaceable bush entrained by the piston in the longitudinal piston direction has a thread with which the bush can be screwed to the threaded bolt. A support tube is disposed on the cylinder housing, is supported on the fixed substructure, and surrounds the threaded nut. A lock bar is disposed on the support tube and has a lock-bar face facing the piston. The lock-bar face bears on a blocking face of the threaded nut that faces away from the piston.

Abstract: A temporary fastening tool has a tool main body, a grip, a transmission mechanism, a socket, a plurality of pins, and two magnets. At least a portion of a side surface of the pin protrudes from an inner surface section of the socket toward a central axis of the socket. The magnets are disposed such that centers of the magnets are disposed outside of an imaginary circle having a radius of a circle that circumscribes an outer circumferential section of a screwing member that includes corner sections. The magnets are disposed at positions that do not overlap the pins when the socket is seen from a side of an opening section.

Abstract: A production line comprises at least one assembly station which is electronically controlled, in which a chain-conveyor device feeds with continuous motion a plurality of pallets carrying parts to be assembled. The production line further comprises at least one module for carrying containers provided with a plurality of part-holder containers for supplying parts to said at least one assembly station. The module comprises a plurality of drawers associated to a paternoster conveyor system.

Abstract: A structure for fixing a membrane to a carrier including a carrier; a suspended structure; and a holding structure with a rounded concave shape which is configured to fix the suspended structure to the carrier and where a tapered side of the holding structure physically connects to the suspended structure is disclosed. A method of forming the holding structure on a carrier to support a suspended structure is further disclosed. The method may include: forming a holding structure on a carrier; forming a suspended structure on the holding structure; shaping the holding structure such that it has a concave shape; and arranging the holding structure such that a tapered side of the holding structure physically connects to the suspended structure.

Abstract: To provide a numerical controller for a machine tool capable of reducing heat generation and realizing stable heavy cutting, and also capable of realizing efficient light cutting. A numerical controller comprises: first speed change means which changes the feed speed of a feed axis drive motor at the start of cutting to an initial speed lower than a command speed, based on magnetic flux content at the start of cutting; and second speed change means which changes the feed speed from the initial speed to the command speed continuously or intermittently based on time elapsed from the start of cutting and a time constant for change in the magnetic flux content.

Abstract: A tool shape measurement device includes: a contour detection unit that detects a tool contour from an image of a rotating tool that is taken; an axis direction calculation unit that calculates a tool axis direction that is an axis direction of the rotating tool on the basis of the tool contour; a tool diameter measurement unit that calculates an apparent tool diameter of the rotating tool on an imaging surface on the basis of a calibrated positional and postural relationship between an imaging device and the rotating tool, the tool axis direction, and the tool contour; and a tool diameter correction unit that calculates a distance between the imaging device and the rotating tool using the tool axis direction, and corrects the apparent tool diameter to an actual tool diameter by correcting distortion in the tool contour on the basis of the distance.

Abstract: A machine tool, in particular a multi-spindle and/or double-spindle milling machine, comprising a machine frame, a workpiece clamping device for clamping a workpiece, an axis slide assembly which is arranged on the machine frame and is configured to linearly move the workpiece clamped on the workpiece clamping device by way of two controllable linear axes in a Y-direction and a Z-direction, and a spindle carrier assembly, which is arranged on the machine frame and has at least two tool-carrying work spindles that can be moved independently of each other in an X-direction which is perpendicular to the Y-direction and Z-direction.

Abstract: A method for treating a surface of flooring includes applying a composition that includes a silicate to a surface of the flooring and, while the composition is present on the surface, polishing or burnishing the surface. The silicate may be a lithium polysilicate and/or a colloidal silica. The composition may further include a surfactant and/or a leveling agent. When the composition is applied to the surface of the flooring, gravity may enable it to spread substantially evenly across the surface. The acts of applying and polishing or burnishing may be repeated. Such a treatment may result in a surface that has a glossiness of at least 80, as measured by a gloss meter set to a 60° angle of incidence.

Abstract: A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.

Abstract: A roll grinding apparatus may comprise a frame, first and second rolls rotatably mounted on the frame in proximity to each other to grind materials passing between the rolls, and first and second motors to rotate the first and second rolls respectively. A control apparatus controls operation of at least one of the motors. The control apparatus may be configured to control the speed of the second roll by providing power to the second motor or braking the second motor through regeneration of energy from the second motor.

Abstract: A rotating tool includes a tool body including a polishing tool and a shank, and a flange part provided in the tool body. The polishing tool includes a plurality of linear grinding members and a grinding member holder to hold the linear grinding members. The flange part is an annular member, and attached to the grinding member holder, so as to be movable in the direction of an axial line and rotatable about the axial line. When the inner circumferential surface of a hole formed in a workpiece is processed, the grinding member holder and the annular member are inserted into the hole. When run-out on the front side of the rotating tool occurs, the annular member comes into contact with the peripheral wall surface of the hole, whereby the run-out of the tool body is reduced.

Abstract: A cam grinding method includes: a common base circle portion setting step of obtaining an angular range of a common surface based on first cam lift data of a first cam and second cam lift data of a second cam; a first cam grinding step of grinding the first cam; a second cam grinding step of grinding the second cam; and a common base circle portion traverse grinding step of, after the second cam grinding step, moving a grinding wheel in a traverse direction to perform spark-out of an unground part remaining at the boundary between the first and second cams.

Abstract: A honing tool has a tool body and shells disposed on the tool body. Honing stone sets each provided with two or more honing stones are provided. The shells each support one of the honing stone sets. Guide bars of the honing tool are placed against the bore and a portion of the bore is conically honed with decreasing stroke of the honing tool, wherein a lower reversing point of the honing tool remains substantially unchanged. Honing is terminated as soon as an upper reversing point has reached a predetermined terminal value. Alternatively, a portion of the bore is conically honed with a constant stroke of the honing tool, wherein reversing points of the stroke of the honing tool remain substantially unchanged and a feeding force pressing the honing stones against the bore is controlled as a function of a position of the honing tool in the bore.

Abstract: A method of fabricating a polishing layer of a polishing pad includes successively depositing a plurality of layers with a 3D printer, each layer of the plurality of polishing layers deposited by ejecting a base material from a first nozzle and an additive material from a second nozzle and solidifying the base and additive material to form a solidified pad material.

Abstract: A retaining ring includes a generally annular body having an inner surface to constrain a substrate and a bottom surface, the bottom surface having a plurality of channels extending from an outer surface to the inner surface, and a plurality of islands separated by the channels and providing a contact area to contact a polishing pad, wherein the contact area is about 15-40% of a plan area of the bottom surface.

Abstract: An apparatus for polishing a semiconductor wafer using a pad resurfacing arm and an apparatus therefor are disclosed. Embodiments may include providing a semiconductor wafer on a chemical mechanical polishing (CMP) tool, the CMP tool including a polish pad and a pad resurfacing arm which includes a pad cleaning part, a pad conditioning part, and a slurry dispensing part, dispensing a slurry to the polish pad utilizing the pad resurfacing arm, and polishing the semiconductor wafer utilizing the polish pad.

Abstract: The present invention is a nozzle assembly having a nozzle main body including an ejection material suction port and an ejection port which ejects the ejection material with the compressed air, and an air nozzle which jets the compressed air into the nozzle main body. The nozzle main body includes a mixing chamber which mixes the ejection material with the compressed air, a first pathway directed from the ejection material suction port toward the mixing chamber, and a second pathway directed from the mixing chamber toward the ejection port. The air nozzle includes a compressed air jet portion and a third pathway directed to the compressed air jet portion, and the third pathway is inserted into the nozzle main body. The compressed air jet portion of the air nozzle is provided with a flow contracting portion having an opening.

Abstract: A cobalt-boron alloy is used as the matrix in a polycrystalline diamond compact. The matrix is hot isostatic pressed with tungsten carbide to form a substrate. The substrate is then high-pressure, high temperature sintered with a diamond powder, preformed and acid-leeched diamond plate, or another ultra-hard material in a press mold to sweep the matrix, thereby creating an ultra-hard polycrystalline compact at a temperature 400° C. lower and with less graphitization than conventional techniques using cobalt binder. The compact is stronger and has a longer useful life than conventional compacts.

Abstract: An open-end wrench includes a stationary jaw including an inclined hole, a through hole adjacent to a first end of an interior surface and communicating with the inclined hole, and a forward hook; a handle pivotably secured to a rear end of the stationary jaw; and a moveable jaw including a forward hook; a hollow cylinder extending from a rear portion to dispose in the inclined hole, the hollow cylinder having an elongated slot on a surface and communicating with an interior of the hollow cylinder, and internal threads at an open end of the hollow cylinder; a biasing member disposed in the hollow cylinder, a threaded fastener secured to the internal threads to urge against a first end of the biasing member; and a pin inserted through the through hole and the elongated slot to stop at a second end of the biasing member.

Abstract: A tool that broadly includes a first drive end and a ratchet gear disposed in the first drive end. The ratchet gear includes a receiving portion adapted to engage a work piece for providing torque to the working piece. First and second pawls each including pawl teeth are selectively engageable with the ratchet gear. The first and second pawls each include a relief portion on a side opposite the pawl teeth. A first bias member is engaged with the relief portions and limits movement of the first and second pawls away from the ratchet gear during use of the tool, thereby reducing an amount of ratcheting arc of the tool.

Abstract: An electric power tool in one aspect of the present disclosure comprises a motor, a hitting mechanism, a hitting detector, and a control unit. The control unit is configured to set a control amount of the motor so that the motor rotates at a lower speed than a speed in the target rotation state during an initial driving period, and switch the control amount to a final control amount corresponding to the target rotation state when the initial driving period elapses. The initial driving period is a period from when generation of a hitting force is detected by the hitting detector until a predetermined first time period elapses, after the motor is started driven.

Abstract: A screwing device, which serves for screwing boards (2) onto underlying crossbeams (3) in such a way that the screws are screwed tilted in from the edges (5) of the boards (2). The screwing device includes a base (7) with an oblong foot (8) which in use stands on the upper side of the boards (2), two arms (9) extending tilted out from each their end of the foot (8), and two opposite screw drivers (10), which are mounted on each their arm (9) and each is arranged with means for conveying a disposable belt (34) of releasable screws (6) and for stepwise screwing in screws (6) from the belt (34). With the present invention, the components of a terrace can be screwed faster together than hitherto known, and at the same time the terrace obtains optimal strength.