Abstract: The present invention relates to an abrasive tool, of the type suitable to be mounted on a machine tool, comprising at least a bearing structure with abrasive material, the said bearing structure being provided with at least a grid (6) with abrasive material, the grid (6) partially protruding or emerging from a body (7) without abrasive material.

Abstract: A shaft portion finishing device for finishing the surface of a work having a shaft portion comprises a first shoe and a second shoe clamping the shaft portion, and an abrasive cloth interposed between the first and second shoes and the shaft portion. On the end face of the first shoe facing the abrasive cloth, a portion set softer than the end face of the second shoe facing the abrasive disc exists.

Abstract: A disc burnishing head includes an array of burnishing pads and a first and second side rail projecting from a bottom surface of a slider body. The side rails each have an inside surface facing the burnishing pads and an outside surface facing outward. The outside surface of at least the first side rail is serrated. The serrations define a plurality of teeth and notches on the outside surface of the first side rail for cutting, cleaning, and conditioning defects from the surface of a disc.

Abstract: Superabrasive tools and their methods of manufacture are disclosed. In one aspect, a method of improving retention of superabrasive particles held in a solidified organic material layer of an abrading tool, a portion of each of said superabrasive particles protruding out of the solidified organic material layer is provided. The method may include securing a plurality of superabrasive particles in the solidified organic material layer in an arrangement that minimizes mechanical stress impinging on the protruding portion of any individual superabrasive particle when used to abrade a work piece. As an example, the arrangement of the plurality of superabrasive particles may be configured to uniformly distribute frictional forces across substantially each superabrasive particle.

Abstract: The present disclosure relates to a burnishing head for processing the surface of a hard disk media. The burnishing head includes a body having cutting features comprised of a thin film material. In many embodiments, the thin film material may be diamond. In some embodiments, the cutting features may be features formed in the diamond film. In alternative embodiments, the cutting features may be features formed in the body and coated with a diamond film. In another embodiment, the present disclosure relates to a burnishing head including a body having a first surface having a well-behaved air bearing surface and a second surface having a plurality of burnishing pedestals for providing burnishing of a media surface. The pedestals include a plurality of micro cutting features etched therein. The present disclosure also relates to magnetic media made at least in part by using such a burnishing head.

Abstract: A method of manufacturing a microneedle including the steps of forming a plurality of first linear grooves on a substrate in parallel to one another along a first direction using grinding, and forming a plurality of second linear grooves on the substrate in parallel to one another in a second direction intersecting the first direction using grinding.

Abstract: Fixed abrasive articles comprising a substrate having an abrasive surface and an attachment surface, and at least one engaging projection are described. Generally, the engaging projection comprises a top surface having a top surface edge and an attachment end attached to the attachment surface of the substrate. The area of attachment between the attachment end and the attachment surface is bounded by an attachment perimeter. The engaging projection also comprises a mantle surface extending from the top surface edge to the attachment perimeter. At least one profile of the mantle surface is substantially convex from a point of maximum width along the profile to the attachment perimeter.

Abstract: An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less.

Abstract: The invention discloses a tool having a work plate which has a mounting area with a mounting opening for mounting the plate on a drive shaft of a drive, preferably an oscillatory drive, the mounting opening being suitably configured for being seated on the drive shaft, wherein centering elements, projecting toward the drive shaft, are provided for centering the tool on the drive shaft.

Abstract: The polishing pad is for polishing patterned semiconductor substrates. The pad includes a polymeric matrix and hollow polymeric particles within the polymeric matrix. The polymeric matrix is a polyurethane reaction product of a curative agent and an isocyanate-terminated polytetramethylene ether glycol at an NH2 to NCO stoichiometric ratio of 80 to 97 percent. The isocyanate-terminated polytetramethylene ether glycol has an unreacted NCO range of 8.75 to 9.05 weight percent. The hollow polymeric particles having an average diameter of 2 to 50 ?m and a wt %b and densityb of constituents forming the polishing pad as follows: wt ? ? % a * density b density a = wt ? ? % b where densitya equals an average density of 60 g/l, where densityb is an average density of 5 g/l to 500 g/l, where wt %a is 3.25 to 4.25 wt %.

Abstract: A polishing pad has a polishing layer and a backing layer secured to the polishing layer. The polishing layer has a polishing surface, a first thickness, a first compressibility, and a hardness between about 40 to 80 Shore D. The backing layer has a second thickness greater than the first thickness and a second compressibility greater than the first compressibility. The first thickness, first compressibility, second thickness and second compressibility are such that the polishing surface deflects at least 2 mil under an applied pressure of 1 psi or less.

Abstract: A metal bonded drilling and boring tool which can prevent the separation of abrasive grains during drilling and boring to maintain a stable working performance for a long period of time without the need for tool exchange. The tool includes a rod-shaped body having a substantially semispherical front end portion and numerous abrasive grains bonded to an outer circumferential surface of the rod-shaped body at the front end portion and at a portion having a given length from the front end portion by a bond member formed primarily of copper alloy. The bond member contains a material selected from the group consisting of Ti, Al, and a mixture thereof. The copper alloy is selected from the group consisting of bronze containing 10 to 33 wt % of Sn, brass containing 5 to 20 wt % of Zn, and aluminum bronze containing 5 to 20 wt % of Al.

Abstract: A knife sharpening bar includes a handle that carries a support bar. A flexible tube is tightly fit over the support bar. A hollow ceramic bar is then fit over the flexible tube with an inside surface of the ceramic bar tightly engaging the flexible tube so that the flexible tube provides a cushioning support between the support bar and the ceramic bar, which protects the ceramic bar from directly bearing any external impact applied to the knife sharpening bar. An internally-threaded cap engages an externally-threaded free end of the support bar and abuts against the ceramic bar to thereby secure the ceramic bar in position on the support bar. Collars or other buffering members can be positioned at opposite ends of the ceramic bar.

Abstract: Provided are an abrasive tool comprising abrasive particles having an average shape controlled to within a small range, and methods of providing such tools. Thus, a large number of abrasive tools will have very similar operating characteristics, and abrasive tools made at different times or through different methods also can have very similar operating characteristics.

Abstract: Embodiments of the invention can provide cryogenic treatment processes for diamond abrasive tools. One process in accordance with an embodiment of this invention can include introducing an abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature; and introducing at least one cryogenic material into the chamber, wherein the internal temperature of the chamber or tool can be controlled by adjusting the flow rate of the at least one cryogenic material. The process can result in a strengthened and toughened abrasive tool. The process can be repeated multiple times.

Abstract: In a surface-coated cutting tool, (a) a Ti compound layer as a lower layer and (b) an ?-type Al2O3 layer as an upper layer having a crystal grain structure of an even polygonal shape (including an even hexagonal shape) and an elongate shape and containing Zr are deposited on the surface of a tool substrate. In the surface-coated cutting tool, the above mentioned crystal grains of which insides are divided by at least one crystal lattice interface with the constituent atom covalent lattice point type expressed by ?3 occupying 60% or more as an area ratio in the crystal grains of the upper layer.

Abstract: A non-glazing dressing wheel (10) suitable for dressing a grinding wheel surface to be used for maintaining a certain tolerance to assure reliability and quality control of ground parts during the grinding operation. The dressing wheel includes at least a first dressing wheel component (12) including at least one interrupted cutting outer surface, wherein the interrupted cutting surface is embodied in a cutting wheel (10) with a plurality of tips (12) extending outwardly from the outer surface. The plurality of tips (12) contact the grinding wheel during the grinding operation, thereby alleviating glazing and heat expansion of the grinding wheel while being dressed. Other preferred embodiments include sandwiching the interrupted cutting surface between two flat grinding surfaces, preferably being made of diamond or Borazon.

Abstract: An abrasive body for polishing includes a resin structure made of resin and a plurality of abrasive grains wherein a critical surface tension of the resin ranges from 1.6×10?2 to 4.0×10?2 N/m.

Abstract: Embodiments of the present disclosure provide working tools that provide suction to a working surface and/or dust removal from a working surface. One embodiment of a tool includes a tool support having an upper surface and a sidewall defining a cavity defined by the sidewall and the upper surface. The tool includes a base attached to the upper surface of the tool support and a vacuum attachment structure attached to the base. The attachment structure includes a connector member having an opening in a first end for releasable attachment to a vacuum source.

Abstract: A manufacturing method for a grinding tool includes: a substrate being provided. A mechanical process is used to form an uneven portion with a regular shape on a surface of the substrate. A coating method is used to uniformly attach a wear resistance layer on a surface of the uneven portion. A forming method is used to uniformly attach a protective layer on a surface of the wear resistance layer. A grinding tool includes a substrate, a wear resistance layer and a protective layer. A surface of the substrate has an uneven portion. The wear resistance layer is uniformly attached on a surface of the uneven portion and corresponds to the shape of the uneven portion. The protective layer is uniformly attached on a surface of the abrasive layer. Thereby, the grinding tool that is corrosion resistance, wear-resistance, heatproof, chemical-resistance and has a regular or irregular shape is formed.

Abstract: A superfinishing stone 2 is slid on a rotating subject surface 7 as pressed against the subject surface 7 and is held in contact against the subject surface 7 as vibrated thereon in a different direction from the sliding direction. The superfinishing stone includes plural stone portions 3, 4 divided by a split surface 6 inclined to both the sliding direction and the vibrating direction and mutually independently movable along the split surface 6 and in the pressing direction.

Abstract: A chemical mechanical polishing pad which provides a high removal rate, can suppress the production of a scratch on the polished surface completely and can achieve high in-plane uniformity in the amount of polishing of the polished surface. The chemical mechanical polishing pad has a surface resistivity of its polishing layer of 1.0×107 to 9.9×1013?. The polishing layer is made of a composition containing (A) a polymer matrix component having a volume resistivity of 1.0×1013 to 9.9×1017 ?·cm and (B) a component having a volume resistivity of 1.0×106 to 9.9×1012 ?·cm.

Abstract: A bonded abrasive tool, having a structure permeable to fluid flow, comprises sintered agglomerates of a plurality of abrasive grains and a binding material, the binding material being characterized by a melting temperature between 500 and 1400° C., and the sintered agglomerates having a loose packing density of ?1.6 g/cc and three-dimensional shape; a bond material; and about 35-80 volume % total porosity, including at least 30 volume % interconnected porosity. Methods for making the sintered agglomerates and abrasive tools containing the sintered agglomerates are described.

Abstract: The invention provides a polishing pad for chemical-mechanical polishing comprising a polishing layer, a bottom layer, and a hot-melt adhesive, the hot-melt adhesive joining together the polishing layer and the bottom layer. The hot-melt adhesive comprises between about 2 and about 18 wt. % EVA and is substantially resistant to delamination when the polishing layer attains a temperature of about 40° C. The invention also provides a method of polishing a substrate with the aforementioned polishing pad, as well as a method of preparing such a polishing pad.

Abstract: The polishing pad is suitable for planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed with an isocyanate-terminated reaction product formed from a prepolymer reaction of a prepolymer polyol and a polyfunctional isocyanate. The isocyanate-terminated section product has 4.5 to 8.7 weight percent unreacted NCO; and the isocyanate-terminated reaction product is cured with a curative agent selected from the group comprising curative polyamines, curative polyols, curative alcoholamines and mixtures thereof. The polishing pad contains at least 0.1 volume percent filler or porosity.

Abstract: In an embodiment, an abrasive compact includes ultra-hard particles which are sintered, bonded, or otherwise consolidated into a solid body. The compact also includes various physical characteristics having a continuous gradient, a multiaxial gradient, or multiple independent gradients.

Abstract: The present invention relates to a cooling disc for cooling grinding tools, having at least one fastening opening, a side which can face a grinding tool, a side which can face away from a grinding tool, a first contact face which is configured in such a way that it can be brought into contact with a corresponding face of a holding element of a grinding tool, and a second contact face which is configured in such a way that it can be brought into contact with a corresponding face of a fixture for a grinding tool. Furthermore, the invention relates to a grinding system which comprises at least one grinding tool which is provided with a holding element, a fixture for a grinding tool, and at least one cooling disc.

Abstract: A pocket abrasive sharpener having a housing formed with a pair of upper slots and a lower open compartment. A pair of abrasive ceramic stones is mounted in one of the slots to form a V-shaped sharpening slot. Each ceramic stone has at least one flat face to abut an adjacent reversed stone to form the V-shaped sharpening slot. The stone has an abrasive cutting edge formed with a radius for sharpening serrated edges and having abrasive surfaces on both sides of the radius. A pair of abrasive blades having V-shaped carbide cutting edges is mounted in the other of the slots to also form a V-shaped sharpening slot. A tapered abrasive rod is pivotally mounted on the housing and is moveable from the compartment to an extended position for sharpening knives and removing pins in certain military and civilian rifles.

Abstract: Superabrasive tools and their methods of manufacture are disclosed. In one aspect, a method of improving retention of superabrasive particles held in a solidified organic material layer of an abrading tool, a portion of each of said superabrasive particles protruding out of the solidified organic material layer is provided. The method may include securing a plurality of superabrasive particles in the solidified organic material layer in an arrangement that minimizes mechanical stress impinging on the protruding portion of any individual superabrasive particle when used to abrade a work piece. As an example, the arrangement of the plurality of superabrasive particles may be configured to uniformly distribute frictional forces across substantially each superabrasive particle.

Abstract: An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.

Abstract: The invention provides a segment type diamond tool capable of improving cutting rate and reducing the amount of fine debris generated during cutting by properly arranging diamond particles in a cutting segment of the diamond tool. In the invention, the layers of diamond particles are arranged such that cutting grooves formed on a workpiece by trailing layers of diamond particles are arranged between cutting grooves formed thereon by leading layers of diamond particles, respectively, in cutting of the work piece. The cutting segment has high-concentration and low-concentration areas. The high-concentration area shows a concentration higher than an average concentration and the low concentration area shows a concentration lower than the average concentration. Also, at least one low concentration area is formed on the leading and/or trailing section of the cutting segment. The diamond tool of the invention ensures superior cutting rate and reduced amount of fine debris generated during cutting.

Abstract: The disclosure relates to fixed abrasive articles having a plurality of three-dimensional abrasive composites including abrasive particles dispersed in a matrix material including a polymeric binder and a plurality of nanoparticulate inorganic filler particles having a volume mean diameter no greater than 1000 nanometers (nm). In some embodiments, the volume mean diameter of the abrasive particles is less than 500 nm, and the volume mean diameter of the inorganic filler particles is no greater than 200 nm. In other embodiments using non-ceria abrasive particles, the ratio of the amount of matrix material to the amount of non-ceria abrasive particles on a volumetric basis is at least 2. In alternate embodiments using non-ceria abrasive particles, the ratio of the amount of non-ceria abrasive particles to the amount of inorganic filler particles on a volumetric basis is no greater than 3. Also provided are methods of making and using fixed abrasive articles according to the disclosure.

Abstract: The present invention relates to an improved cutting wheel, comprising a disk-shaped abrasive body having two opposite faces and a non-uniform thickness.

Abstract: A dual purpose abrading device for smoothing, sanding or finishing a surface of an object while simultaneously surrounding, collecting and containing the particles or debris as they are being generated. The abrading device includes a porous member having a collecting surface with a recess defined therein and a three dimensional abrading member adapted in shape and size to be received within the recess of the porous member. When the abrading member is inserted into the recess of the porous member the abrading member has an exposed abrading surface at least a portion of which is covered with an abrading material. The abrading member is circumscribed by the porous member thereby surrounding, collecting and containing the particles or debris as it is being produced by the abrading device.

Abstract: A cutting tool comprising may include at least one abrasive tip that includes an abrasive cutting edge, and an insert body. The insert body includes a moldable material, and the moldable material is adhered to a portion of the abrasive tip.

Abstract: A method of forming and applying a diamond coating or other superhard coating to a tool, most preferably a downhole tool, such as a drill bit. A superhard powder is placed into slurry and then formed, preferably using a tape casting method, into a green tape that is capable of being handled and applied to a substrate. The tape is then applied to a desired surface on a part or tool, being affixed initially thereto by a suitable braze. The tape is then cured to the surface using a thermal cycle that transforms the tape into a solid diamond composite coating. In another aspect, diamond tape is combined with ceramic tape having electronic circuitry components integrated therein.

Abstract: Truing of a grinder is performed by irradiating a laser beam onto abrasive grains on the outermost periphery of the grinder from the tangential direction of the grinder. Truing of the grinder for adjusting the number of working abrasive grains and the shape of the abrasive grains involved in the actual machining is performed under a non-contact condition and at highly accurately, thereby enabling highly accurate and highly efficient machining.

Abstract: A flexible finishing shoe for finishing a workpiece have a bearing surface and an adjacent side, the flexible finishing shoe comprising a shoe base having a first side and an opposing second side and a finishing body disposed between the first and second sides, the finishing body made from a flexible non-metallic material capable of conforming to the bearing surface and adjacent side.

Abstract: An oval rod sharpener having an interrupted diamond abrasive surface having plurality of holes forming wells for collecting filings during sharpening. The abrasive surface is formed by multiple layers of micron sized diamonds, such as monocrystalline diamonds. A plastic pad is provided on the tip end of the oval abrasive rod to protect a support surface on which the sharpener rests during a sharpening operation.

Abstract: A cutting tool having a crystalline tip is pressed with a uniform pressure against the outboard surface of a vehicle wheel as the wheel is rotated. The smoothed wheel surface is then chrome plated to provide a cosmetic finish to the wheel face.

Abstract: The present invention is for a grinding device, such as a surface grinding disc or an annular grinding wheel, constructed from a plurality of abrasive segments arranged in an array thereon, wherein the plurality of abrasive segments are embedded in a matrix composition, and wherein the device is abapted to perform a “dry machining” operation. The abrasive segments may be resin bonded or vitrified and may include diamond or other superhard or superabrasive particles, such as, for example, cubic boron nitride (“cBN”), dispersed therein. Both the abrasive segments and the matrix composition include a dry lubricant, such as hexagonal boron nitride, molybdenum disulfide or graphite, dispersed therein. The abrasive segments further include a melt phase metal composition, such as bronze or other copper alloys, to aid in heat dissipation.

Abstract: In relation to a blade cutting stone or concrete, a blade, preventing wearing of a core while preventing the core from wobbling, cuttable at a stable speed is provided. In a blade formed by providing slots on the outer peripheral edge of a circular core and fixing a superabrasive layer to a portion of the outer peripheral surface of the core located between the slots, the superabrasive layer consists of a first superabrasive layer having an extension formed by partially extending the superabrasive layer toward the inner periphery of the core and a second superabrasive layer.

Abstract: The invention relates to a grinding segment comprising a ceramic part manufactured of grinding ceramic material and provided with a fastening hole, through which the grinding segment is attached to a frame of a grinder stone by means of a fastening bolt. A fastening sleeve is arranged in the fastening hole, and the fastening bolt is supplied through the sleeve. The fastening sleeve is pressed against the frame of the grinder stone due to the fastening force. A space filled with bonding agent is formed between the ceramic part of the fastening sleeve to join them together. The invention further relates to a grinder stone comprising a cylindrical frame and grinding segments according to the invention.

Abstract: A curved surface cutting method in which a surface of a material is cut by a bite to form a specified curved surface, a cutting edge of the bite is provided with a flat section and corner sections at both ends of the flat section; the posture of the cutting edge of the bite is adjusted such that a ridge line along the flat section of the cutting edge of the bite is in parallel with a tangent drawn at the curved surface; and the surface of the material is cut with the cutting edge of the bite retained in the posture while feeding the cutting edge in a predetermined feeding direction, thereby forming a first band-like cut surface having a width corresponding to the width of the cutting edge of the bite.

Abstract: A vitrified bond tool including: (a) a support body; (b) a vitrified bond layer which is formed on a working surface of the support body; and (c) a plurality of abrasive grains which are held by the vitrified bond layer so as to be fixed relative to the working surface of the support body and which are spaced apart from each other with spacing between the adjacent ones of the abrasive grains. This vitrified bond tool is advantageously manufactured according to a method including the steps of (i) forming a pattern layer which includes a vitrified bond, in a predetermined pattern on the working surface of the support body; (ii) sprinkling the abrasive grains over the pattern layer before the pattern layer is dried; and (iii) firing the pattern layer and the abrasive grains which are bonded to the pattern layer and are arranged in the predetermined pattern on the working surface of the support body.

Abstract: Provided is a multifunctional whetstone comprising a handle comprising a rear cutter, top slits of different width, and a bottom magnet; a head comprising an open mouth including a curved recess for gripping a sheet of paper and a bottom opening with two concealed abrasive blades anchored in both sides; and a yoke-shaped guide fastened at the cavity and both eyes and comprising two wings. In one operation blunt cutting edges of a blade of a knife are placed in the opening and are adapted to rub against either abrasive blade to-and-fro repeatedly. In another operation a piece of glass is cut along a predetermined line by manipulating the cutter, a portion of the glass is inserted into one conformed slit with the predetermined line aligned with an opening of the slit, and the handle is adapted to pivot to break the glass into two parts.

Abstract: An improved method of manufacturing automotive accessory drive belts or other workpieces of pliant material which have a grooved operative face, a tool having an abrasive ramp configuration for performing said improved method and a method of manufacturing said tool with the abrasive ramp configuration.

Abstract: A manual sharpener for sharpening either right or left-handed blades of scissors or shears comprises a support structure with an attached hand holding arrangement. A magnetic device holds at least one adhesive pad on the supporting structure. One or more precision angle blade guides are mountable on the structure.

Abstract: A cutting tool having a hard tip is pressed with a uniform pressure against a surface of a vehicle wheel as the wheel is rotated to smooth and seal the surface. The smoothed and sealed wheel surface is then chrome plated with a process that includes applying a nickel layer directly upon smoothed and sealed wheel surface and a chromium layer over the nickel layer.

Abstract: The present invention provides diamond tools, and a method for the formation thereof, using CVD techniques. In one aspect, an ephemeral mold is provided which has a diamond interface surface configured to inversely correspond to the desired shape for the working surface of a diamond layer in a tool. After the mold is provided, various CVD techniques may be used to deposit diamond layers upon the diamond interface surface of the mold. Following diamond deposition upon the diamond interface surface, the mold may be removed by various means, such as chemical etching, etc. Thus, the working surface of the diamond receives a shape which inversely corresponds to the configuration of the mold's diamond interface surface. The diamond mass may then be incorporated into a tool, if such incorporation has not yet taken place.