Abstract: An adjustable stroke mechanism for a random orbital machine including a housing having a wall enclosing a cavity, an adjuster ring surrounding the housing and having a first set of gear teeth along a first portion of an inner surface, and a second set of gear teeth along a second portion of the inner surface, a counterweight having gear teeth on an exterior surface disposed within the housing, and a bearing carriage having gear teeth disposed within the housing. At least one counterweight gear that meshes with the gear teeth of the counterweight and the first set of gear teeth of the adjuster ring, and at least one bearing carriage gear that meshes with the gear teeth of the bearing carriage and the second set of gear teeth of the adjuster ring, so that movement of the adjuster ring causes movement of both the counterweight and the bearing carriage.

Abstract: A polishing pad is provided. The polishing pad, suitable for a polishing procedure using a slurry containing water, includes a polishing track region and a first reactant. The polishing track region includes a central region and a peripheral region surrounding the central region. The first reactant is disposed in the central region of the polishing track region, wherein the first reactant is able to react endothermically with the water in the slurry.

Abstract: A surface grinding tool includes a support housing adapted to be coupled to a source of pressurized gas. The housing includes a conduit for directing the pressurized gas to an open end of the housing. A flexible sealing membrane is coupled to the housing such that the sealing membrane spans the housing's open end to prevent the pressurized gas from passing through and around the sealing membrane. A plate having through holes is coupled to the housing. The plate has a first face disposed adjacent to the sealing membrane and a second face opposing the first face. Each of a plurality of grinding elements is coupled to the sealing membrane and to the first face of the plate. Each grinding element has a portion thereof passing loosely through one of the through holes and extending away from the second face of the plate.

Abstract: The precision lapping and polishing device for external cylindrical surface of disk part and its taper error adjustment method. The device composes a circular baseplate, slant rails, baffles, pressure plates, copper blocks, a washer blanket; blanket plates, a set of bead shafting, a friction driving wheel, a DC motor, a mobile power supply, a LED lamp and a cover body. By adopting the working principle that the generatrix rotates around the fixed axis to form the cylindrical surface, the ultra-precision machining of the cylindrical surface of disk part is realized. The radial-continuous-automatic-micro feeding of the disk part is realized by thinning the thickness of the circular baseplate which is internally tangent to the generatrix of the circular baseplate during the process of lapping and polishing. The device has the advantages of operating simply, adjusting conveniently, low cost and is of important value for popularization and application.

Abstract: A grinding apparatus that performs thickness measurement across an entire wafer surface without degradation of throughput of wafer grinding and grinds the wafer precisely to a target thickness. A grinding apparatus includes a rough grinding stage for roughly grinding a wafer and a fine grinding stage for finely grinding the wafer. A first thickness measuring means for measuring the thickness of the wafer while the wafer is being transferred is provided to a column so disposed as to span an index table. A control unit of the grinding apparatus corrects a target thickness after fine grinding and computes a target thickness after correction on the basis of an average thickness across the entire surface of the wafer before fine grinding obtained from measured values of the first thickness measuring means.

Abstract: Reciprocating tool accessories are presented including: a damping handle assembly; and a surface contact assembly coupled with the damping handle assembly along a distal end and the reciprocating tool along a proximal end. In some embodiments, the damping handle assembly includes: a grip portion, the grip portion defining a housing, where the grip portion includes, a reciprocal connector subassembly at least partially contained within the housing; and a contact roller portion releasably coupled with the grip portion, where the contact roller portion includes, at least one horizontal contact roller coupled with and aligned along the grip portion, and at least one vertical contact roller coupled with and extending from the grip portion along a grip portion end. In some embodiments, the grip portion further includes a contoured surface.

Abstract: The present invention provides a slurry composition and method for polishing organic polymer-based ophthalmic substrates. The slurry composition according to the invention includes an aqueous dispersion of abrasive particles and one of a polyvinyl alcohol compound, and a tertiary amide functionalized compound. The abrasive particles can be alumina, zirconia, silica, titania, ceria, spinel or combinations of the foregoing.

Abstract: A substrate processing apparatus includes a polisher configured to polish a substrate using a polishing liquid, a first cleaner configured to clean the substrate polished by the polisher using sulfuric acid and hydrogen peroxide water, a second cleaner configured to clean the substrate cleaned by the first cleaner using a basic chemical liquid and hydrogen peroxide water, and a drier configured to dry the substrate cleaned by the second cleaner.

Abstract: A method of production of edge protection strips (10) of ceramic material, includes the steps of: arranging a sheet-like article (20) of ceramic material elongated along a longitudinal axis (A) and provided with an exposed surface (S); incising the exposed surface (S) along two distinct incision planes, parallel to each other, orthogonal to the exposed surface (S) and each intersecting the exposed surface (S) along an incision line (I) parallel to the longitudinal axis (A); cutting the article (20) along two cutting planes each intersecting an incision plane along a cutting line (C) parallel to the incision lines (I) and mutually incident in an intersection line (X) included in the thickness of the article (20); and separating a substantially prismatic edge protection strip (10) from the article (20) with a first portion (S1) of exposed surface (S) internal to the incision lines (I).

Abstract: Embodiments of substrate carriers and method of making the same are provided herein. In some embodiments, a substrate carrier includes a substantially planar body; and a plurality of holding elements arranged on a surface of the substantially planar body, wherein the plurality of holding elements are configured to hold a plurality of substrates on the surface of the substantially planar body, and wherein the plurality of holding elements includes at least three holding elements disposed around a corresponding position of each of the plurality of substrates.

Abstract: The method generally involves the steps of filling the cavities in a production tool each with an individual abrasive particle. Aligning a filled production tool and a resin coated backing for transfer of the abrasive particles to the resin coated backing. Transferring the abrasive particles from the cavities onto the resin coated backing and removing the production tool from the aligned position with the resin coated backing. Thereafter the resin layer is cured, a size coat is applied and cured and the coated abrasive article is converted to sheet, disk, or belt form by suitable converting equipment.

Abstract: There is described a method, apparatus and shaping tool for shaping a workpiece. The tool comprises a flexible support surface on which are mounted a number of rigid pellets (84) carrying abrasive material. The tool is driven, in contact with the workpiece surface (S), to perform a ductile grinding operation which results in a finished surface of reduced roughness as compared to conventional grinding operations, while achieving significantly higher material removal rates than comparable ultra-precision grinding techniques. A procedure for preparing the tool for operation by conditioning the tool against a conditioning surface is also described. An exemplary application for the method and apparatus is in the preparation of moulds for moulding curved glass components for use in display screens, in which process a silicon carbide mould cavity surface is shaped using the method to produce a mould cavity surface with a smooth surface finish.

Abstract: A dust collection device for an electric power tool includes a main body case that includes an air exhaust port and is attachable to a hammer drill, a dust box provided therein with a filter, and a tubular sliding portion that has a base end connected to a connection port provided on the main body case, that includes a suction port at its front end, and that is slidable in a front-rear direction, and includes therein a dust collection path formed to pass from the suction port through the filter to the air exhaust port. The connection port is provided on a side surface of the main body case, and connected to a flexible hose serving as a base end of the sliding portion, and a side surface of the dust box is provided with an inlet port communicating with the connection port.

Abstract: A semiconductor manufacturing apparatus according to the present embodiment has a polisher polishing a substrate. A holder holds the substrate and rotates the substrate with respect to the polisher while pressing the substrate toward the polisher. A supplier supplies a polishing solution onto the polisher. A first annular part is attached to the holder. The first annular part is located around the substrate and between the holder and the polisher, when polishing the substrate. A second annular part is attached to the holder. The second annular part is located around the first annular part and between the holder and the polisher, when polishing the substrate. The first annular part is movable relative to the second annular part or the second annular part is movable relative to the first annular part, in a rotation direction of the substrate or the holder.

Abstract: A polishing article manufacturing system includes a feed section and a take-up section, the take-up section comprising a supply roll having a polishing article disposed thereon for a chemical mechanical polishing process, a print section comprising a plurality of printheads disposed between the feed section and the take-up section, and a curing section disposed between the feed section and the take-up section, the curing section comprising one or both of a thermal curing device and an electromagnetic curing device.

Abstract: A coolant nozzle carrier for use with a grinding machine that has a grinding spindle for supporting and driving a grinding disc with a rotational axis. The coolant nozzle carrier comprises at least two coolant nozzles and at least a center leg and two side legs that are attached to the center leg. Each of the side legs supports at least one nozzle and extends in a plane that is perpendicular to the rotational axis. The side legs are configured to accommodate the grinding disc in between the side legs with a moving gap defined between the grinding disc and the side legs.

Abstract: An angle grinder includes a motor including a rotor and windings, a power supply for supplying power to the motor, a main switch for turning on/off an electrical connection between the windings of the motor and the power supply, an output shaft driven by the rotor to rotate, a rotor brake circuit for slowing down the rotor of the motor when the windings are short circuited or reverse connected, an output shaft brake circuit for producing a magnetic field to slow down the output shaft and a controller for detecting whether the rotor brake circuit short circuits or reverse connects with the windings. When the windings are short circuited or reverse connected for a time which reaches a preset value, the output shaft brake circuit produces the magnetic field to slow down the output shaft.

Abstract: Embodiments of the Hose Tool are comprised of head assembly and handle assembly. The head assembly is comprised of a hose tab guide, a plurality of hose dogs, a plunger bar rack, and a hose tab guide sleeve. The handle assembly is comprised of a chassis, plunger bar rack, two handle pinons, a spring, two hinged handles, two bolts, a pivot pin, a guide bolt, two latch pins, and latch pin spring. The two hinged handles are attached to the two handle pinons via two bolts; held open by two latch pins being pressed into slot in two handles pinons by a latch pin spring. Depressing the two latch pins allows two hinged handles to swing alongside hose tool for storage. The two halves of two handle pinons are separated, timed and engaged within the plunger bar rack; then inserted into chassis and secured with pivot pin.

Abstract: The present invention is a novel technique for setting a multiplicity of diamonds such as diamonds into a unique setting to enhance the beauty and presentation, with the technique including steps of assorting, blocking, mapping, sawing, polishing, assembling and grooving of assembling of white, naturally colored and treated color natural diamonds. The present invention provides method where each diamonds is separately processed for ultimate brilliance and cumulative refraction. The flat surfaces of the adjacent diamond are joined to form the complete design in the system. The assembled diamonds are arranged by grooving and providing support to form final pattern of the jewelry. The present process is advantageous with regards to usage of maximum utilization of raw diamond and process that gives great brilliance of large diamond and expensive appearance to user.

Abstract: An abrasive sheet is described which is composed from a combination of an abrasive material and an abradable polymer composite wherein the abradable polymer composite comprises a layer of a first polymeric composition and conjoined thereto a layer of a second polymeric composition wherein the layer of said second polymeric composition is provided with a sensory cue.