A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.

A spiral fluted tap is provided which includes a threaded portion having an external thread corresponding to an internal thread to be cut and a cutting edge formed along a spiral flute formed to divide the external thread, and being screwed into a prepared hole that is provided on a workpiece to cut an internal thread by the cutting edge on an inner circumferential surface of the prepared hole with discharging chips toward a shank via the spiral flute, the spiral flute having a stepped portion at a rear end of a chamfer portion or in a portion on a shank side from the rear end of the chamfer portion in the threaded portion, and a flute bottom diameter on a distal end side of the spiral fluted tap from the stepped portion being smaller than a flute bottom diameter on a shank side from the stepped portion.

In various embodiments, a tapered thread roll, a set of tapered thread rolls, a thread rolling tool, and a thread rolling method are provided for rolling angled or tapered threads onto a workpiece to create a threaded workpiece. In at least one embodiment, the threaded workpiece may comprise a polished rod or a polished rod precursor as specified by the American Petroleum Institute for use in an oil-field sucker-type pump, for example.

A threading cutting insert achieves high shape accuracy of a screw to be processed, and saves on manufacturing cost. Therefore in the threading cutting insert, a plurality of tooth-shaped cutting edges are formed in a cross ridge line portion between a rake face and flanks formed in a cutting side face, wherein the plurality of mountain-shaped cutting edges provides at least one finishing cutting edge for transferring a shape of a screw, and at least one roughing cutting edge formed in a tooth shape smaller than that of the finishing cutting edge. A flank of the finishing cutting edge includes a first flank, and a second flank having a clearance angle larger than that of the first flank, wherein the finishing cutting edge, the first flank, and the second flank are sequentially provided in that order from the rake surface in a direction of a lower surface of the insert.

A full-round head nail having an offset head is configured with a gusset formed integrally between an undersurface of the offset head and a superior portion of a shank. The head of the nail is relatively thin, and the shank is positioned radially off center of the round head such that no heel is formed at a point tangential to both the head and the shank. The gusset has a lofted surface tapering radially from a roundness at the zero heel to a taper at the toe. The gusset reinforces the junction of the shank with the head, supports the toe of the head, and distributes the force of a load on the head through a longitudinal axis of the shank, preventing the toe from bending or yielding and prevents the shank from yielding to the stresses of the load applied.

A pivoting split thread chasing die with fastener is disclosed. In one example, the fastener can include a retainer that captures the fastener within one half of the thread chasing die. The thread chasing die may make it easier for a user to refurbish threads of large bolts and studs.

A slotted inverse tap, compressible for insertion past damaged entry threads in blind holes. (FIG. 1 thru FIG. 5) The tool can be made to smaller sizes than that of prior art. An elongate slot (23) proceeds through a first threaded end (21), then well into a reduced diameter cylindrical body (25). After insertion to the hole bottom, a tabbed shim (28) is inserted to the slot from its side, then pressed down until stopped. The shim (28) enforces mating engagement with undamaged internal threads. A second end of hex and/or squared or other configuration facilitates use of a tap wrench or other tool for rotational extraction. Damaged threads are reformed/re-cut upon rotational withdrawal.

A faceted bone screw and a method for manufacturing the same includes a screw thread configuration having facets that are substantially transverse to the thread. The facets are generally made up of a plurality of transitioning peaks and valleys which vary the depth of the thread and are disposed in one or more locations throughout the threaded portion of the bone screw. The facets operate to reduce the torque required to drive the bone screw into bone, while at the same time operate to assist in anchoring the bone screw within the bone once inserted therein, and thereby reduce the possibility for the screw backing out after insertion.

A fastener suitable for use in airplane manufacture or repair that is coated with a pre-mixed moisture cure sealant. The sealant layer is coated with a frangible moisture barrier that will break apart when the fastener is installed, thus exposing the sealant to atmospheric moisture. Once exposed to moisture, the sealant will begin to cure. Preferred embodiments also provide a moisture indicator that provides a visual indication that the outer moisture resistant layer has been damaged.

An apparatus to produce a self-piercing and clinch nut includes a first forging die assembly, a second forging die assembly, a third forging die assembly, a transfer mechanism, and a controller. The first forging die assembly is configured to subject a blank to first processing. The second forging die assembly is adjacent to the first forging die assembly and configured to subject the blank to second processing after the blank has undergone the first processing in the first forging die assembly. The third forging die assembly is adjacent to the second forging die assembly and configured to subject the blank to third processing after the blank has undergone the second processing in the second forging die assembly. The controller is configured to control the first forging die assembly, the second forging die assembly, the third forging die assembly, and the transfer mechanism to operate.

In the case of a screw having at least one thread (26) that is formed by a rolling process, especially a flat-die rolling process, whereby the thread (26) consists of two ridges of material (28a, 28b) which are shaped from a blank (12) by means of cold-forming during the rolling process in such a way that the thread has a closing crease (32) where the ridges of material (28a, 28b) meet each other, it is provided that the closing crease (32) is situated in the area of a flank (30a, 30b) of the thread (26).

A releasable lock nut assembly for securing a bearing on a threaded hub may include a thrust washer including a disk portion and a peripheral skirt extending axially away from the disk portion, the peripheral skirt having a plurality of openings and a characteristic diameter measured at an axial location of the openings, and a protuberance proximate to at least one of the openings. The assembly may also include a lock ring inserted into the thrust washer, where the lock ring includes a plurality of tangs that extend beyond a lock ring major diameter such that the tangs fit within the openings of the thrust washer. The protuberance may be deformed such that all of the peripheral skirt is within the characteristic diameter, and the protuberance may define an internal envelope of the thrust washer where the internal envelope is larger than the major diameter of the lock ring.

A thread-furrowing screw comprises a shaft portion made of solid material and a thread portion attached to the shaft portion, which thread portion is wound from a profiled metal strip.

Tap and die devices are provided to repair internal and external threads, respectively. The tap and die devices are provided with components that coaxially align the tap and die to the nut or fitting being repaired. The tap and die devices are easily portable, compact tools that can be used in tight places.

A locking device for preventing unauthorized retraction of a telescopic prop is made up of an adjustable clamp which can be fitted round the outer circumference of the prop together with a fastener for tightening the clamp, such as a nut and bolt with anti-tamper heads and a shield to prevent access to the head with a gripping instrument. The device can be placed around the outer circumference of an extended prop adjacent to the collar such that once the clamp is tightened the collar is sandwiched between the locking device and the pin. Alternatively the device can be placed around the outer circumference of the inner tube of the prop adjacent to and abutting the end of the outer tube of the prop in order to prevent unauthorized retraction of the prop.

A nail-forming apparatus and method to rapidly form nails typically with circular heads is provided. One aspect relates to a sequential wire piece positioner configured for sequentially positioning wire pieces respectively adjacent a plurality of nail head formers. The wire piece positioner may include several carriages related to moving and forming the wire pieces.

A thread forming tap has a full thread portion and a leading portion contiguous with the full thread portion and reducing in diameter toward its tip. The full thread and leading portions are provided with external thread on which lobes and recesses are alternately formed. When δ represents an angle around a tool center line toward a thread forming side, the shape of the lobe varies along a quadratic curve relative to angle δ so that relief amount increases toward inflection point angle δ. However, in a rough plastic deformation section where angle δ is greater than inflection point angle θ and exceeds the working region, the shape varies along an Archimedean curve with clearance angle α1 so that the relief amount increases linearly relative to angle δ, and a margin section is substantially zero or within a range where angle δ is less than or equal to 1°.

Disclosed herein is a method for manufacturing a screw comprising a continuous thread with a variable thread pitch, in which method a blank is rolled between two rolling dies, wherein in each rolling die a rolling profile is formed that comprises a host of curved non-parallel depressions. The depressions are designed and arranged in such a manner that during rolling no volume transport, or as little volume transport as possible, in the axial direction takes place, or a volume transport from a region of the blank where a thread section with a larger thread pitch is to be formed, to a region in which a thread section with a smaller thread pitch is to be formed takes place.

A method for manufacturing a bolting part, such as a screw or a nut. The bolting part having a head with a periphery having at least one shoulder extending in a radial plane. The method includes at least the following forming steps: shearing of a wire of material so as to obtain a part of determined length, calibration of the part so as to correct the geometry of the part, rough machining of the calibrated part so as to obtain the head of the bolting part, and finishing of the rough-machined part by means of a third punch so as to form a head having at least one shoulder. The calibration, rough machining and finishing steps being carried out only by cold heading.

A polishing pad, having a polishing layer comprising a thermoset polyurethane foam, wherein the polishing layer has an in-plane variation of 12 or less in microrubber A hardness, the variation being obtained by measuring the polishing layer from a polishing surface side of the layer, the thermoset polyurethane foam contains, as raw material components, an isocyanate component and active-hydrogen-containing compounds, and the active-hydrogen-containing compounds comprise a trifunctional polyol having at least one terminated hydroxyl group that is a secondary hydroxyl group, and having a hydroxyl group value of 150 to 1,000 mg KOH/g in an amount of 10 to 50 parts by weight for 100 parts by weight of the active-hydrogen-containing compounds.

A fiber optic connector fiber stub remover and method for automated fiber stub removal. The device has a top plate with a platen opening, and a platen with a well that carries a polishing film over the well. An air pocket is formed between the polishing film and the well. The platen is positioned with a top surface of the polishing film accessible via the platen opening. A fixture holds connector ends of fiber optic cables with fiber stubs extending therefrom, and a weight biases the fiber stubs into contact with the polishing film. A motor is controlled by a motor control unit to control a ramp up time and final speed of movement of the platen over a timespan. Each connector ends moves independently relative to the polishing film. The air pocket provides shock absorption of the polishing film so that an ideal pressure is exerted on each fiber stub during stub removal.

The polishing solution for CMP according to the invention comprises abrasive grains, an additive and water, and the polishing solution comprises an organic compound satisfying specified conditions as the additive. The polishing method of the invention is for polishing of a substrate having a silicon oxide film on the surface, and the polishing method comprises a step of polishing the silicon oxide film with a polishing pad while supplying the polishing solution for CMP between the silicon oxide film and the polishing pad.

The process and apparatus for mobile separation and recovery of used contaminants abrasive blasting material from a work site. Entrained contaminants within used blast material are removed by a self-contained mobile platform process using multiple stage cleaning system including dual cyclonic separation, multiple stage dust filters with large debris magnetic drum, airwash and vibratory separation in a flow through containment and blast media separation process.

A honing machine has at least one clamping unit that clamps a workpiece and has a rotary drive for the workpiece. A spindle unit has a stroke drive for an inner honing tool for inner honing of the workpiece. An outer honing device that is movable relative to the workpiece in an axial direction of the workpiece is provided. The outer honing device has several honing stones and an advancing device acting on the honing stones. The honing stones each are advanced in a radial direction relative to the workpiece. The advancing device has at least one linear drive for each one of the honing stones and a common drive motor for all of the linear drives.

A device for processing welding electrodes with a grinding surface driven by a driving motor with a shaft, which faces the motor and runs in a housing, wherein at least one opening is provided in the housing for guiding a welding electrode for grinding in a defined position relative to the grinding wheel. The housing is releasably fixed to a motor flange for bearing the shaft, and the grinding wheel is arranged on a side of the motor flange which is remote from the motor. The motor flange is formed by a sleeve, which is adapted to be stuck onto the housing in such a way, that at least one opening extends from the circumference of the housing towards the grinding surface facing the motor.

A dart restoration tool includes a stator having a conical milling surface and a rotor mounted for rotation about a longitudinal axis of the stator. The rotor includes a guide adapted to accept a tip end portion of a game dart such that the tip end portion engages the conical milling surface. Rotation of the rotor about the longitudinal axis produces an orbital motion of the game dart against the conical milling surface to sharpen the tip end portion of the game dart.

An abrasive tool including a CMP pad conditioner having a substrate including a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major, wherein a first layer of abrasive grains is attached to the first major surface and a second layer of abrasive grains is attached to the second major surface. The conditioner further includes a first sealing member extending in a peripheral direction along a portion of the side surface of the substrate.

A method of chemical mechanical polishing a substrate includes polishing a metal layer on the substrate at a polishing station, monitoring thickness of the metal layer during polishing at the polishing station with an eddy current monitoring system, and controlling pressures applied by a carrier head to the substrate during polishing of the metal layer at the polishing station based on thickness measurements of the metal layer from the eddy current monitoring system to reduce differences between an expected thickness profile of the metal layer and a target profile, wherein the metal layer has a resistivity greater than 700 ohm Angstroms.

Disclosed are an apparatus and a method for monitoring a glass plate polishing state. The apparatus may include a location measuring unit for measuring a location on a glass plate being polished by a polishing machine, a current measuring unit for measuring an electric current flowing into the polishing machine, a memory unit for storing a reference value of the electric current flowing into the polishing machine for each polishing location of the glass plate, and a control unit for determining whether a polishing state is faulty, by comparing a value of the electric current measured by the current measuring unit for each polishing location measured by the location measuring unit with a corresponding reference value of the electric current stored in the memory unit for each polishing location.

A grinder for sharpening the blades of reel mowers automatically to grind the underside of the blade of the reel mower.

Methods of shaping a glass sheet each include a step of removing a first portion of the glass sheet to form a first beveled surface. The methods further include the step of removing a second portion of the glass sheet to form a second beveled surface. The methods still further include the step of removing a third portion of the glass sheet comprising a remainder of an end surface of an edge portion of the glass sheet. In further examples, glass sheets are also provided with a first bevel surface intersecting a first glass-sheet surface and an apex surface, and a second bevel surface intersecting a second glass-sheet surface and the apex surface. The glass sheet exhibits a probability of failure of less than 5% at an edge stress of 135 MPa.

A dual capability ultra high pressure (UHP) fire attack system includes a fluid jet assembly and an UHP attack line system. The fluid jet assembly and the UHP attack line system are coupled to a high pressure fluid source. The fluid is discharged from both the fluid jet assembly and the UHP attack line system as a mist having a droplet diameter of approximately 150 microns. When infused with an abrasive material, the fluid jet assembly may be used to cut through structural surfaces, so that a fire may be “knocked down” before the fuel source is attacked.

A fully symmetric cutter grinding machine with 5-axis includes a grinding machine base and a pillar, sliding rails are vertically arranged on an inside of the pillar, the sliding rails are provided with a grinding wheel head bracket, the grinding wheel head bracket comprises torque motors vertically provided, a lower part of the torque motor is connected to a horizontally provided spindle by means of a bearing of a rotation table, grinding wheels rotating around an axis of the spindle are symmetrically provided at two sides of the spindle, the grinding wheel head bracket further comprises a big rotatable pulley provided at an upper part of the grinding wheel head bracket and driven to rotate by spindle motors, the big pulley is connected to a spindle pulley by a wide synchronous belt.

Disclosed is a grinding tool, which includes a first disk having an installation hole in a center portion thereof such that the grinding tool is installed on a grinder, a second disk forming a discharge passage with partitions on a bottom surface of the first disk, wherein air intaken from a central lower portion of the grinding tool is discharged to an outside thereof through the discharge passage, and a ring-shaped shank disposed under the second disk and including grinding tips to grind a target.

A holding body includes a fastening layer which has a fastening surface configured to fasten a flexible grinding device. The fastening layer includes an air- and dust-permeable material and is substantially full-surface. The fastening layer includes a textile material. The holding body also includes a supporting body which has a supporting surface configured to support a holding surface of the fastening layer. The supporting body is air- and dust-permeable and includes an open-cell foam. A grinding system includes such a holding body and such a flexible grinding device.

An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.

A method for making a circuit board includes separating a plurality of versatile circuit boards from a collective board by cutting a connecting portion of the collective board, the plurality of versatile circuit boards being connected each other via the connecting portion, and cutting a part of a wiring formed on each of the plurality of versatile circuit boards to produce the circuit board. The cutting of the part of the wiring is conducted within the separating of the plurality of versatile circuit boards.

A deburring device includes a barrel with a granulated polishing member filled therein. The barrel is configured by a case formed with an opening hole, and drop prevention member which is fixed to the case and prevents the polishing member from being dropped from the opening hole. A gap into which a tubular end section of a workpiece is inserted is formed between the opening hole of the case and the drop prevention member.

The present invention provides: a method of polishing an object to be polished for processing a surface of the object to be polished into a concave or convex state with a high degree of accuracy; and a polishing pad. An object to be polished is placed on a polishing pad over the boundary between the first polishing region and the second polishing region, the first polishing region has grooves and the second polishing region has grooves different from those of the first polishing region, and either one of the two regions being formed on a region on the center side, and the other on the outer side in a radial direction on the surface of the polishing pad; and the object to be polished is polished by rotating the polishing pad and the object to be polished.

A coated abrasive article comprises an abrasive layer secured to a backing. The abrasive layer comprises abrasive particles secured by at least one binder to a first major surface of the backing. A supersize is disposed on at least a portion of the abrasive layer. The coated abrasive article has a melt flow zone adjacent to an edge of the coated abrasive article, wherein the melt flow zone has a maximum width of less than 100 micrometers, and the melt flow zone has a maximum height of less than 40 micrometers. Methods of using infrared lasers to ablate coated abrasive articles are also disclosed, wherein a laser wavelength is matched to a component of the coated abrasive article.

A tool is disclosed for selective honing of the outer diameter of a cylinder using an abrasive belt in semi-circular contact upon the outer-diameter of a cylindrical work-piece to perform a similar function to honing the inner-diameter of a hollow cylinder. The belt is retained within the tool body by U-shaped restraint arms, and a slot in the tool body. A clamp block retains the ends of the belt which exit the slot. Springs on the arms, and contact of the block on the outside of the tool body, force the belt into a triangular shape inside the body. A cylindrical work-piece inserted within the triangular shaped belt causes the belt to deform into three semi-circular areas of contact between the belt and work-piece. When the work-piece is rotated, the belt abrades material from the work-piece.

A run-off securing device, in particular a run-off securing device of a handheld power tool, is configured to avoid running off of a clamping element and/or a tool from a spindle. The device has at least one transmission unit, which is removably coupled to the spindle and has at least one first transmission element and at least one second transmission element. The at least one second transmission element is movable in relation to the at least one first transmission element. The transmission unit has at least one movement changing unit, which at least partially transforms a first relative movement between the at least one first transmission element and the at least one second transmission element into a second relative movement in a braking mode.

The invention relates to a device (1) for machining a stepped shaft (2), having a workpiece rest (6); having a disk arrangement (3) which has a grinding disk (4) and a control disk (5); and having an axial stop arrangement (7), wherein the axial stop arrangement (7) has a contact adapter (8) which can be temporarily placed in contact with an end surface portion (9) of the shaft (2) and which has a punctiform contact surface (10) for contact against a stop part (11) of the stop arrangement (7).

A dust collecting attachment that is mounted on a sander includes a suction portion mounted on a portion of a front housing where an output shaft projects, a flexible hose having a front end of the flexible hose connected to the suction portion, a discharge portion connected to a rear end of the flexible hose and a changeable member placed on both a motor housing and the discharge portion. The changeable member allows the discharge portion to be mounted at any position around an axis of the motor housing.

A combined processing tool includes a shank of a cylindrical shape, a mandrel fixed to the shank, a frame rotation-universally fitted outside the mandrel, a burnishing unit for performing a burnishing to an inner peripheral surface of a workpiece by rolling members, a dimple forming unit for performing a dimple forming to the surface of the workpiece by surface compression members so as to universally appear from and disappear in the frame, a body fixed to a top portion of the shank, and a skiving unit for performing a cutting, wherein, on an outer peripheral region of the mandrel, an outer peripheral surface 31c and a concave and convex shape area which consists of concave parts and convex parts alternately arranged along an outer peripheral direction of the mandrel are formed, and wherein the concave and convex parts are alternately engaged in the compression members with being rotated.

A knife sharpener having an angled bolster for providing predetermined sharpening angles with respect to the sharpening surface is provided. The angled bolster of the knife sharpener preferably includes two different angled surfaces for establishing at least two different predetermined sharpening angles for a cutting implement to be sharpened. The angled bolster is configured to set up the knife sharpening angle at predetermined angles with respect to the sharpening surface.

A steady rest for centering a rotationally symmetrical workpiece in a space comprises: two housing halves arranged at a distance from one another and connected together, a plate-shaped middle piece arranged between the two housing halves, the middle piece mounted in the housing halves by means of an actuator piston so it can be moved in an axial movement direction to the workpiece, two linear guide grooves disposed in both opposite end faces of the middle piece, with the linear guide grooves running in a cross-shaped arrangement and at an angle to the movement direction of the middle piece, two outer steady rest arms, each of which has its free ends mounted in each of the linear guide grooves of the middle piece in a movable arrangement, and a middle steady rest arm attached to the middle piece between the outer steady rest arms.

The method for machining a series of workpieces (21) via at least one machining jet includes the following steps: each workpiece (21) is associated with an identifier for uniquely identifying the workpiece,during the machining of a respective workpiece, the temporal characteristic of the machining jet is detected by at least one sensor (30),the detected temporal characteristic is evaluated so as to obtain at least one comparative value, andfor detecting incorrect machining, the at least one comparative value is compared with at least one threshold value.

Described are embodiments of an invention for a method and a tool to produce a textured surface on the retention tab of a storage cell. The tool has a form that fits within the storage cell. The form has a hard material with a hard surface with contacts a surface of the retention tab within the storage cell. The movement of the hard surface across the surface of the retention tab produces a textured surface on the retention tab. The textured interface between a notch of a data storage cartridge and a retention tab of a storage cell provides a consistent and low friction force that retains the data storage cartridge within the cell but allows the accessor to easily remove the data storage cartridge when needed.

Particularly, a thin-film solar cell panel or the like is processed without necessity of attaching and detaching of mask and washing steps with respect to a workpiece in a fine blasting employing a fine abrasive. A negative pressure space (20) and an opposing negative pressure space (40) having openings (22, 42) are opposed by being spaced at a movement allowable interval of the workpiece such as a thin-film solar cell panel or the like and so as to face one side edge in the same direction as a moving direction of the workpiece. Further, a fine abrasive is injected while relatively moving the workpiece in a moving direction (T) with respect to a blast gun (30) in which an injection hole (31) is disposed within the negative pressure space (20), and the fine abrasive injected into the negative pressure space (20) and/or the opposing negative pressure space (40) and a cut and removed cut scrap such as a thin film layer or the like are sucked and recovered through the intermediary of suction devices (21a, 21b) and/or an opposing suction device (41) respectively communicating with the spaces (20) and/or (40).