Abstract: A cutting head rotatable about a central axis, comprising a tip portion and an intermediate portion. The tip portion has an axially forwardmost tip point contained in the central axis and three axially forward facing front surfaces forming three chisel edges extending axially rearwardly away from the tip point, each front surface having a radially extending cutting edge comprising a secondary cutting-edge portion extending radially outwardly from one of the chisel edges, and a primary cutting-edge portion extending radially outwardly therefrom. Each primary cutting-edge portion is contained in an imaginary annular ring surface having an annular ring width spanning at least radially inner and outer end points thereof. In a front-end view of the cutting head, each primary cutting-edge portion is concave, and radial planes intersect the imaginary annular surface to form imaginary rectilinear lines, each having a length equal to the annular ring width.

Abstract: A square-shaped bar-peeling insert and insert-holder designed with pockets to hold two such square-shaped inserts. Each insert has four peripheral sub-surfaces and corners. Between each adjacent pair of corners is a cutting edge which includes a straight wiper sub-edge and two at least partially curved peeling sub-edges respectively located on opposing sides of the wiper sub-edge. The corners of the insert are inwardly disposed relative to an imaginary square formed by the sub-edges.

Abstract: A computing device may include a memory and a processor cooperating with the memory to access a session hosted by a remote computing device, and classify a group of data packets into first and second data packets. The first data packets may define reference points for reassembly of the group of data packets with the second data packets at their original positions in the group of data packets. The processor may further send the first and second data packets to the remote computing device via different channels with different rates of packet loss to enable reconstruction of the group of data packets at another device.

Abstract: A reamer is rotated about a central axis and has, in a direction along a central axis, a tool front end and a tool rear end that is an end opposite to the tool front end. The reamer includes a blade on a tool front end side. The blade has, on a circumferential surface, a chamfered cutting edge located on the tool front end side, a circumferential cutting edge contiguous to an end of the chamfered cutting edge on a tool rear end side, and a margin that is a surface contiguous to the circumferential cutting edge. The circumferential cutting edge includes a front end portion between a first position and a second position, the first position being an end on a chamfered cutting edge side, the second position having a distance of 1 mm from the first position in a direction of extension of the circumferential cutting edge.

Abstract: A reamer includes a core, a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, and a margin provided on a rear side of each the plurality of outer-circumference cutting edges in a rotational direction. A distance from an axis of rotation to a position of a center of gravity of the reamer is greater than 0.01 mm and not greater than 0.5 mm.

Abstract: A valve seat for a valve is disclosed, the valve seat facilitating cutting of a body located within the seat. The valve seat includes a sealing surface for sealing with a valve member and an annular cutting component having a plurality of cutting teeth. The cutting teeth are circumferentially spaced and each defines an elongate crest. A valve is disclosed having a housing with a bore), a valve member and the valve seat. The valve seat is arranged within the housing in communication with the housing bore. The valve member is movable relative to the housing between an open position and a closed position.

Abstract: A chamfering tool that chamfers an opening edge of a target hole formed in a work, the chamfering tool including a support shaft, a base shaft having the support shaft on a tip end side thereof and being eccentric with respect to the support shaft, and a blade portion having a rake face that is a step surface of a step protrusion portion protruded laterally from the support shaft or that is an end surface of the support shaft. The blade portion including an edge line in a shape of a curve and being bulged to a side away from a center axis of the support shaft, and the edge line being inclined with respect to an axial direction of the support shaft.

Abstract: A cutting insert for an indexable drill according to the present disclosure may be used for external cutting or internal cutting depending on a position and a direction in which the cutting insert is installed even though a single type of cutting insert is provided. In addition, the cutting insert for an indexable drill according to the present disclosure has a section of the internal cutting edge which is involved in a cutting process or a section of the internal cutting edge which is not involved in the cutting process, which are clearly distinguished from each other, and as a result, the cutting insert may be rotated and mounted, and reversed and mounted on a drill body, such that maximum eight corners may be used to perform a cutting process.

Abstract: A drill bit, which is rotatable in a direction of rotation about an axis of rotation, is disclosed. The drill bit has a cutting portion with an annular portion where the annular portion has a first end on which is a cutting element and has at a second end a first insertion element. The drill bit has a drill shaft portion with a cylindrical drill shaft which has at an end, towards the cutting portion, a second insertion element. In a direction of insertion parallel to the axis of rotation, the insertion elements form a plug-in connection and can be additionally connected by way of at least one pin element which is movable in at least one slit-shaped clearance.

Abstract: An end milling cutter for heat-resistant superalloys (HRSA) has a shank and a cutting head, which have a common rotation axis, the shank having a connection section for connection to the cutting head and a coupling section for connection to a tool holder, the cutting head consisting of a solid ceramic part, which has a rotationally symmetrical envelope and is butt-joined to an end face of the connection section. In order to keep excessive vibrations and thus stresses low in the interface between the cutting head and the connection section of the milling cutter and to create milling cutters that can also cover the diameter range above 12 mm and in particular above 20 mm and up to 32 mm, the coupling section has a conical peg having an external thread.

Abstract: A drill according to an embodiment of the present invention has a pair of main cutting edges positioned at a front end of a drill body, a pair of first chisel edges each extending from the pair of main cutting edges toward a rotation axis, and a second chisel edge positioned between the pair of first chisel edges and intersecting with the rotation axis of the drill body. When viewing a locus of rotation of the pair of first chisel edges and a locus of rotation of the second chisel edge in a cross section taken so as to include the rotation axis, the respective locus of rotation of the pair of first chisel edges have a rectilinear shape, and respective imaginary straight lines obtained by extending the locus of rotation of the pair of first chisel edges toward the rotation axis are positioned further to a rear end side of the drill body than the locus of rotation of the second chisel edge.

Abstract: Various embodiments of a trading screen allow a market value indicator to go out of view without necessarily triggering a command to reposition a value axis. The value axis may be repositioned to bring the market value indicator back in view when the market value indicator satisfies a threshold condition. The threshold condition is defined such that it is possible for the market value indicator to go out of view and not trigger a command to reposition the value axis. Various embodiments automatically reposition the value axis in a way that can provide the user with more overall control of the trading screen than previous trading screens. Further, the user may gain increased confidence in using the trading display, particularly with respect to single action order entry, because there is less risk of the value changing on the display during order entry. These advantages and others will be evident to a person of ordinary skill in the art of the embodiments described herein.

Abstract: A single-lip drill including at least one cutting edge on a drill head has a face which is concave along at least 75 percent of the width thereof and substantially along the entire length thereof, all the way to, and inclusive of, the cutting edge.

Abstract: A method for producing a single-sided mold and a double-sided coining mold are provided. The method comprises the following steps: S1. forming a mold cavity on the single-sided mold according to shape of a product; S2. engraving a surface of the mold cavity by a first engraving and milling cutter to form engraved holes, and then inserting a second engraving and milling cutter into the engraved holes for further engraving to form holes to be coined; S3. repeating the step S2 until a predefined number of the holes to be coined are formed on the surface of the mold cavity; S4. placing a coining die with hardened tips on the surface of the mold cavity, and embedding each of the hardened tips into one of the holes to be coined respectively, and then the mold cavity being molded by a coining process.

Abstract: A method for milling a cutout using a milling cutter in a workpiece is provided. A longitudinal axis of the milling cutter is positioned in a first orientation relative to the workpiece to contact a first side of the workpiece. An enveloping cylindrical surface of the milling cutter is then used to cut a cutout which has a plurality of peripheral edges and rounded corners. The milling cutter is then placed in a second orientation which is angled relative to the first orientation. Thereafter, the enveloping cylindrical surface and an enveloping axial surface of the milling cutter are used to further cut the rounded corners of the cutout to form sharp corners.

Abstract: A method for integrally forming a drilling tip on a wire nail, in particular in order to produce a screw with the aid of a pair of pinching jaws, provides for the bulge formed by the displaced material during the integral forming of the drilling tip to be sheared off the drilling tip along the entire length of the cutting edges of the drilling tip produced and to be left connected to the drilling tip only along the longitudinal side edges of the latter by a predetermined breaking point.

Abstract: A coupling device couples a first member and a second member. The coupling device includes: two protruding portions provided on the first member; a through hole formed to pass through the second member; two reception holes provided in the second member and each formed to connect to the through hole; and a fixing member having a first pressing portion and a second pressing portion. The fixing member is configured to, when being disposed in the through hole, change a distance between the first pressing portion and the second pressing portion due to application of a force to one end portion of the fixing member. The first pressing portion and the second pressing portion are formed to exert a fixing force on either corresponding one of the two protruding portions received in the two reception holes.

Abstract: Low profile reamers and methods of use are provided which can, in general, allow a hole to be drilled in bone. In one embodiment, a low profile retractable bone reamer is provided having an elongate shaft with a cutting element disposed on a distal end of the elongate shaft that can be configured to drill a hole in bone. The elongate shaft and cutting element can have first and second longitudinally separated portions that are movably coupled to each other. The reamer can be configured to move between a retracted configuration, in which a the reamer has a reduced, low profile configuration, and a non-retracted configuration, in which both longitudinally separated portions of the cutting element can be positioned adjacent to one another to form a single cutting element.

Abstract: The present disclosure relates to a deep hole drill tool of the type that includes a basic body, a cutting insert having a cutting edge, which is formed between a chip surface and a clearance surface. The chip surface includes a chamfer surface adjacent to the cutting edge and the clearance surface, the chamfer surface having a width of at least 0.2 mm defined between two boundary lines, and which, in each infinitesimal part along the cutting edge, forms an angle (?) of at least 25° and at most 50° with a reference plane extending perpendicular to the center or rotation axis of the tool.

Abstract: This document provides novel drills and/or reamers that are well-suited for making holes in a variety of materials including, but not limited to, metals, ceramics, glass, wood, plasterboard, plastics, stone, composites, synthetics, silicon or multi-layered or hybridized substrates. In some embodiments, these drilling devices have some centers of mass that are offset from the axis of rotation. Accordingly, such drills and/or reamers may rotate and cut using a precessional pattern of motion. Precessional cutting devices may display a mechanical wave pattern in relationship to the longitudinal axis of the device. If the cutting device is fabricated from a flexible material, for example Nickel-Titanium, bodily deflection of the device may result during rotation.

Abstract: A method for manufacturing a cemented carbide body includes the steps of forming a first part of a first powder composition comprising a first carbide and a first binder phase, sintering the first part to full density in a first sintering operation, forming a second part of a second powder composition comprising a second carbide and a second binder phase, sintering the second part to full density in a second sintering operation, bringing a first surface of the first part and a second surface of the second part in contact, and joining the first and second surface in a heat treatment operation.

Abstract: A drill, such as a spade drill, is provided. The drill includes a drill body that includes a mounting end and a cutting end. The cutting end includes first and second cutting edges that are generally curved along the entirety of the cutting end of the drill body, removing any sort of cutting corner. The curved cutting edge provides a more resilient drill for removing material from a workpiece. The cutting edges may also include a drilling point at a distal end and at least partially between the first and second edges, along with webs extending from the drilling point to the cutting edges. The mounting portion includes structure to attach the drill to a holder, which can connect to a rotating apparatus for rotating the holder and drill.

Abstract: The invention relates to a screwdriving tool (1) and to a tool holder (2) for such a screwdriving tool. The screwdriving tool (1) contains a tool head (3) and a tool shank (4) having an outer thread (5) and a supporting region arranged between the tool head (3) and the outer thread (5). According to the invention, the supporting region is formed by two conical bearing faces (6, 8) having different cone angles.

Abstract: Provided are a drill blank, a method for manufacturing a blank, a drill, and a method for manufacturing a drill which allow a step of brazing to be easy and allow the brazing to be precise. A drill includes a drill blank brazed thereto in an elongated columnar-shape and made of cemented carbide. In the drill blank, both dA and dB are equal to or smaller than 2 mm, dA?dB>dC, a ratio of the length to dA is equal to or larger than 3, and dB/dA=0.96 to 1 and dC/dA=0.9 to 0.995 in a longitudinal direction, where dA indicates the diameter of one end of both ends, dB indicates the diameter of the other end thereof, and dC indicates the minimum diameter of a central portion. Brazing of the drill blank is easy and precision in brazing is enhanced.

Abstract: A method and apparatus for performing an operation on a structure. In one illustrative embodiment, an apparatus comprises a tool system and a movement system. The tool system is configured to perform an operation at a location on a structure. The movement system is configured to move the tool system along an elongate frame on the structure to the location.

Abstract: Provision is made of a cutting tool, in particular a drill or a milling cutter, having a shank and a chip transporting portion, which receives a cutting insert, wherein the cutting tool is a hybrid composite body. Furthermore, a chip transporting portion for a cutting tool and also a process for producing a cutting tool are described.

Abstract: A cutting insert includes a top face, a bottom face and a plurality of side walls extending between the top face and the bottom face. A peripheral cutting edge is defined at the juncture of each side wall and the top face. Each cutting edge includes a linear cutting edge portion and a concave cutting edge portion that curves inwardly in a plane that is perpendicular to a plane containing a central axis of the cutting insert. A radiused corner portion connects two adjacent cutting edges. Each linear cutting edge portion extends from one radiused corner portion to the concave cutting edge portion and the concave cutting edge portion extends from the linear cutting edge portion to another radiused corner portion.

Abstract: A method of joining a plurality of parts to form a unitary body. At least two sintered parts are provided. At least one of the sintered parts has at least one internal channel. Each of the parts is formed of a hard metal composition of material. The at least two sintered parts are assembled into the shape of a unitary body. Each of the at least two sintered parts has a joining surface and when each joining surface is brought into contact the surfaces form a bonding interface therebetween. The assembled parts are subjected to a vacuum or gas atmosphere, without the application of external pressure, and to a temperature sufficient to fuse the at least two sintered parts together at the bonding interface to form the unitary body.

Abstract: A method of joining a plurality of parts to form a unitary body includes providing at least two sintered parts. Each of the parts is formed of a hard metal composition of material. The sintered parts are assembled into the shape of a unitary body. Each of the sintered parts has a joining surface and when each joining surface is brought into contact the surfaces form a bonding interface therebetween. The assembled sintered parts are subjected to a temperature sufficient to fuse the sintered parts together at the bonding interface to form the unitary body. A wear resistant tool includes a plurality of sintered parts, each of the sintered parts is formed of a hard metal composition of material, wherein the plurality of sintered parts can be assembled into a unitary body, wherein the assembled parts are fused together at a respective bonding interface to form the unitary body.

Abstract: The invention is directed to a drill system that better uses the power curve of modern machine tools. The drill system uses a two-step drill, utilizing IC inserts to perform the major hole diameter cutting, and a central drilling system. In examples, the IC inserts can be set in a drill head in a single or double effective configuration. A central drilling system cuts the remaining minor diameter portion of the hole, and is configured to see less cutting surface footage, due to its position from the rotating center of the tool. The central drilling system may include a “self-centering” geometry, such that the drill head of the tool with be guided throughout the depth of the hole. The drill system allows for a large diameter deep hole that remains straight throughout to be drilled at higher speed and lighter feed rates thus offering a more productive tool that takes advantage of the power curves and lower thrust capabilities of modern machine tools.

Abstract: The present invention relates to a method for coating a substrate, preferably a drill, wherein at least one first HiPIMS layer is applied by means of a HiPIMS process. Preferably, at least one second layer is applied to the first HiPIMS layer by means of a coating process that does not contain a HiPIMS process.

Abstract: A reamer has a center axis and includes a single cutting edge, provided for a cutting part that is arranged at a leading end side. The reamer includes three guide pads in the cutting part. The first guide pad is formed so as to project to the side almost opposite that where the single cutting edge is formed. The second guide pad is arranged in one area of areas, along a peripheral face of the cutting part, that are located between the first guide pad and the single cutting edge and that are directed toward sides opposite each other, and the third guide pad is arranged in the other area.

Abstract: The present disclosure provides a quadrangular indexable drill insert comprising a substantially flat top surface and bottom surface, a side surface adjoining the top and bottom surfaces; four identical cutting edges formed at intersection of side surface and top surface, each cutting edge comprising, a concave curved part edge of predetermined radius at corner of the insert; a first part edge oriented towards axis of drill body and is having negative slope, said first part edge is connected to the concave curved part edge through a nose portion; a second part edge connected to first part edge through a transitional edge, said second part edge is tangentially oriented to an imaginary inscribed circle; a third part edge connected to the second part edge through a transitional edge, and a nose portion of adjoining the third part edge with concave curved part edge of succeeding cutting edge.

Abstract: A rotary cutting tool includes a cutting tip having a cutting portion adapted to perform cutting operations on a workpiece and a threaded aperture defined therein generally opposite the cutting portion. The cutting tool further includes a generally cylindrical tool body disposed about a central longitudinal axis, the tool body having a first end portion adapted to be coupled to a machine tool and an opposite second end portion including an aperture having a coupling mechanism disposed therein. The coupling mechanism includes a first threaded portion cooperatively engaged to the threaded aperture of the cutting tip. The first threaded portion is moveable with respect to the tool body in a manner that selectively couples the cutting tip to the tool body.

Abstract: The invention relates to a deburring tool for deburring abutting edges at orthogonally and obliquely extending transversal boreholes having a diameter of less than 10 mm in a component, such as an engine block, an injection system for combustion engines, a valve block and a camshaft or transmission shaft. The deburring tool is moved in a rotational and/or translatory manner and comprises a tool shaft (1), which is provided with a clamping end (2), and a tubular shaft part (5), characterized in that said tubular shaft part holds one or several cutting bodies (11) with a cutting blade (3), the cutting bodies being mounted in a movable manner in a passage (10), and in that a substance that is pressed under pressure into the through-bore (7) of the tool shaft (1) displaces the blade(s) to the exterior. The deburring tool is configured as a single piece and can be produced at low cost. Different blade geometries remove the burr by means of high speed deburring.

Abstract: A hole-making tool includes a body having a seat, which is delimited by a tangential support surface, an axial support surface, and a radial support surface. A cutting insert is fixed in the seat. A pair of female- and male-like securing means is arranged in the interface between the tangential support surface of the seat and the underside of the cutting insert. The female-like securing means includes a guide surface. The male-like securing means is spaced from the guide surface to form a gap between the securing means when the cutting insert is pressed against the axial and radial support surfaces. If the feeding direction of the tool is reversed, the cutting insert may become detached from the seat and the securing means is activated to direct the cutting insert inward toward the radial support surface to prevent the peripheral portion of the cutting insert from scratching the generated hole.

Abstract: A grounding clamp is provided that includes a grounding wire having two ends that are each configured to extend out an opening in a coaxial cable. The grounding clamp includes a housing configured to receive both ends of the extending wire in an inner chamber through a first opening, the housing including a second opening configured to receive a lug, wherein the lug is configured to secure both ends of the grounding wire within the inner chamber. A method of installing a grounding clamp includes attaching a fishline to a grounding wire and inserting the fishline through an opening of a corrugated coaxial cable in a valley located between an outer conductor and an outer jacket of the coaxial cable, wherein the fishline is rigid enough that it does not buckle or deform significantly under the pressure of the outer conductor and the outer jacket, wherein the fishline is flexible enough that it bends around the corrugated coaxial cable.

Abstract: The disclosure relates to a die stock comprising: an annular holder having a plurality of receiving grooves; a plurality of cutting inserts; and one fixture per cutting insert for axially fixing the respective cutting insert in one of the plurality of receiving grooves. The plurality of receiving grooves are provided on an inner periphery of the annular holder and run in an axial direction parallel to a central longitudinal axis of the annular holder. Each of the plurality of receiving grooves has a receiving groove profile for receiving one of the plurality of cutting inserts. Each cutting insert is received within a respective one of the receiving grooves and comprises at least one cutting edge that is arranged on a cutting surface that faces toward the central longitudinal axis of the annular holder, wherein each cutting insert comprises a holding profile that is arranged on a holding surface opposite the cutting surface.

Abstract: A handheld drill/driver device having a mechanical torque coupling that is provided to limit a maximum torque that can be transmitted to an insertion tool. The handheld drill/driver device have at least one monitoring unit that is provided to electrically output a characteristic quantity that is a function at least of a torque transmitted to the insertion tool.

Abstract: TASK An inexpensive drill with high processing accuracy is provided. MEANS FOR SOLVING THE PROBLEM A chisel edge 11 of a tip 12 is removed, and a pyramid 1 is formed in that part, in which an inclination angle ?1 of each edge 4 extending from an apex P relative to a center line of the drill CL is formed to be larger than an angle ?2 that is one-half of a drill tip angle ?0, and so chisel steps are resolved and stable cutting becomes possible, thereby improving hole accuracy. Also, it is possible to form the pyramid 1 by grinding a tip of an existing drill by a grinder, so that a drill can be realized at a low cost.

Abstract: A drilling tool for producing drill holes includes a tip and a shaft arranged opposite the tip in a direction of a longitudinal axis of the drilling tool. The drilling tool has at least one geometrically defined cutting edge in the tip area, and has an expanded diameter trailing the tip in a longitudinal direction from the tip. The drilling tool has a first area with a first diameter that precedes the expanded diameter, and a second area with a second diameter, larger than the first diameter, that trails the expanded diameter. The drilling tool is distinguished in that the expanded diameter and/or the second area is/are embodied such that chips are produced in the area of the expanded diameter and/or in the second area when a workpiece is machined, chips consistent with those produced when a workpiece is machined with a geometrically undefined cutting edge.

Abstract: A bore cutting tool, particularly for cutting metal workpieces, includes a tool substrate and a tool coating on a surface of the tool substrate. The bore cutting tool comprises a plurality of pits in the surface of the tool substrate and wherein the tool coating extends over the pits such that the pit surface comprises the tool coating. In this way, the pit dimensions can be retained over prolonged tool life and the pits, with their coated surface, are particularly effective at retaining lubricant so that the thickness of a lubricant film can be increased as compared to a tool without the coated pits. In embodiments the pits are formed by laser etching and are present only on the cylindrical land. Average pit depth is suitably in the range 8 ?m to 25 ?m, average pit width and pit length is independently selected from 40 ?m to 250 ?m and average pit density is 20 to 30 pits/mm2.

Abstract: A cutting head has a resilient male coupling member. The cutting head has a central resilience slit that extends between two major surfaces and opens out to the male coupling member and at least one lateral resilience slit that extends between the two major surfaces and opens out to a base surface. The central resilience slit and the at least one lateral resilience slit each have forwardmost points, located forward of the base surface. Also, a cutting tool that has a tool holder with the cutting head secured thereto. The tool holder has an insert pocket that includes a forward facing holder base abutment surface that has a female coupling member. In a locked position, the male coupling member is resiliently retained in the female coupling member. All points on the male coupling member are under deflection.

Abstract: A cutting tool has a cutting insert secured in a tool shank by means of a clamping bolt, whereby two opposing side surfaces of a body portion of the cutting insert are located between two spaced apart protuberances of the tool shank. The body portion includes a cut-out extending between the two opposing side surfaces and opening out to a bottom surface. The cut-out includes an undercut with at least one undercut sub-surface with respect to a forward direction. The clamping bolt can be rotated from a locked position wherein the bolt shank has a threaded portion engaged in one of the protuberances and a bolt locking portion located directly forward of the at least one undercut sub-surface, to an un-locked position wherein the threaded portion remains engaged in the protuberance and no portion of the bolt shank is located directly forward of the at least one undercut sub-surface.

Abstract: A rotary cutting tool includes a replaceable cutting tip having a cutting portion structured to perform cutting operations on a workpiece and a first threaded portion disposed generally opposite the cutting portion. The cutting tool further includes a generally cylindrical tool body disposed about a central longitudinal axis. The tool body has a first end portion adapted to be coupled to a machine tool and an opposite second end portion having a second threaded portion cooperatively engaged to the first threaded portion. The second threaded portion is moveable with respect to the tool body in a manner that selectively couples the cutting tip to the tool body.

Abstract: Deburring knife for deburring straight or nonround hole edges with a base body driven rotationally around its longitudinal axis, in which one or more bar blades are replaceably accepted into a swivel-mounted knife holder in a base body, by which the knife holder has at least one control recess located on its circumference, in which a spring component engages, which guides the rotation of the knife holder in the base body, characterized by the fact that for pivot bearing of the knife holder in the base body of the knife holder there are two drilled holes located across from one another vertically to the mounting hole of the bar blade, into each of which the end of a bearing bolt engages, whose other end goes into a transverse hole in the base body and serves to rotate the knife holder in the base body that one or more bar blades are thereby easily and replaceably mounted in the radial mounting hole in the knife holder, that at least one stop preventing axial displacement and one pullout safety device for secur

Abstract: An extraction tool lifting apparatus having a load bearing coupling capable of being removably connected to an extraction tool; an hydraulic cylinder assembly being operatively connected at a first end to the load bearing coupling; a mounting bracket being operatively connected to the second end of the hydraulic cylinder assembly; three legs, each operatively connected at a first end to the mounting bracket; the load bearing coupling being adapted to be removably connected to an extraction tool having, an elongated base member having first and second ends, and a drill bit being removably attachable to a socket in the first end, the base member having a threaded portion being disposed approximate the first end, the second end being adapted to be removably connected to the load bearing coupling.

Abstract: A tool head for use with a modular shank tool includes at least two preforms. Each preform of the at least two prefroms is made separately from the other preform of the at least two preforms from granular materials and then put together and jointly compressed and integrally bonded.

Abstract: A slip on nut and reverse cut die is provided for dressing the threads of a wellhead or other item. A nut is provided that may be slipped onto a threaded section, past any damaged threads, without engaging the threads of the threaded section. Once positioned on a threaded section the nut may be tightened as desired. When removing the nut the reverse edges of the nut may repair or even cut new threads into the threaded section.

Abstract: An improved drill is provided with a negative rake angle, a positive flute rake angle, and a positive relief angle. The drill may include a chip breaker disposed within a flute along the shank of the drill.