Abstract: An angle grinder is provided including a radial fan assembly. The radial fan assembly is configured to direct exhaust radially outwardly and axially away from a user of the angle grinder. Brush card assemblies for an angle grinder are also provided. The brush card assemblies provide for the securing of brush cards to a field case of the angle grinder by the interface between the field case and brush cards. Additionally, a spindle lock mechanism and a safety mechanism for an angle grinder are provided.

Abstract: A substrate polishing apparatus includes a substrate holding mechanism having a head for holding a substrate to be polished, and a polishing mechanism including a polishing table with a polishing pad mounted thereon. The substrate held by the head is pressed against the polishing pad on the polishing table to polish the substrate by relative movement of the substrate and the polishing pad. The substrate polishing apparatus also includes a substrate transfer mechanism for delivering the substrate to be polished to the head and receiving the polished substrate. The substrate transfer mechanism includes a substrate to-be-polished receiver for receiving the substrate to be polished, and a polished substrate receiver for receiving the substrate which has been polished.

Abstract: A polishing apparatus polishes a top edge portion and/or a bottom edge portion of a substrate accurately and uniformly. The polishing apparatus includes a rotary holding mechanism 3 configured to hold the substrate W horizontally and to rotate the substrate W; and at least one polishing head 30 disposed near the peripheral portion of the substrate. The polishing head 30 has at least one protrusion 51a, 51b extending along a circumferential direction of the substrate W, and the polishing head 30 is configured to press a polishing surface of a polishing tape 23 by the protrusion 51a, 51b against the peripheral portion of the substrate W from above or below.

Abstract: 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).

Abstract: A tool holder for a grinding machine, where the tool holder is mounted to a grinding platform of the grinding machine. The tool holder includes a plate member having a tapered slot where opposing stop elements are provided within the slot at a central location. The tool includes a pair of circular elements that are positioned on either side of the stop elements in the slot and are forced into the tapered shape of the slot so that the tool is held to the tool holder.

Abstract: A head for an orbital abrading machine comprising a housing, a shroud including inner and outer portions, defining a chamber between the inner and outer portions, a drive means for driving an abrading pad, the drive means at least partially enclosed by the housing and the shroud, wherein the drive means produces an exhaust which is directly vented into the chamber without leaving the head, and wherein the chamber includes at least one opening for directing the exhaust toward the abrading pad for cooling the pad with the exhaust.

Abstract: A polishing pad having a detection window and a method of manufacturing the polishing pad are provided. A dummy detection window is pre-disposed in a mold. A polishing layer precursor is filled into the mold, and then a solidifying process is performed to form a polishing layer, wherein the polishing layer and the dummy detection window are separable completely. The polishing layer and the dummy detection window are separated from each other so as to form a detection opening in the polishing layer. The detection opening can alternatively be formed in a mold having a protrusion structure to replace the dummy detection window. A detection window precursor is filled into the detection opening, and then a solidifying process is performed to form a detection window.

Abstract: A polishing pad including a path therethrough to transmit a signal for in situ monitoring of an endpoint in a polishing operation. In one embodiment, the polishing pad includes a polishing composition distribution layer on a first side of a guide plate and a support layer on an opposed second side of a guide plate. The guide plate retains a plurality of polishing elements that extend along a first direction substantially normal to a plane including the polishing pad and through the polishing composition distribution layer. The polishing pad includes an optical path along the first direction and through a thickness of the pad.

Abstract: A flexible membrane assembly for a wafer carrier in a CMP system. The flexible membrane assemble has a flat, flexible membrane joined to a rigid cylindrical sidewall.

Abstract: The invention relates to miming bases with improved speed and gliding characteristics when they run over water, snow or ice surfaces or artificial materials that mimic these surfaces. In particular the invention relates to a method comprising sequentially treating at least a portion of the running base with one or more abrasive materials having a progressively smaller particle size.

Abstract: A retaining ring has a generally annular body with a top surface, a bottom surface, an inner diameter surface, and an outer diameter surface. The outer diameter surface includes an outwardly projecting flange having a lower surface, and the bottom surface includes a plurality of channels.

Abstract: A grinder with built-in grinding agent dispenser includes a driving shank having an adapter end for operatively coupling with a grinder machine for being driven to rotate, a grinding shaft operatively coupling with the driving shank for being driven to rotate, an abrasive arrangement provided at the grinding shaft for refining a surface of a workpiece, and a grinding agent dispenser built-in within the grinder for guiding a flow of grinding agent. The dispenser has a supplying channel connected to a supplying inlet, and a grinding channel connected to a dispensing outlet and communicatively connected to the supplying channel, wherein the supplying channel and the grinding channel are provided within the driving shank and the grinding shaft, so that when the grinding agent is feeding into the supplying channel via the supplying inlet, the grinding agent is guided to flow to the dispensing outlet, so as to disperse grinding agent.

Abstract: In a method for producing a water jet (45) that contains abrasive and emerges under high pressure from a nozzle (44), uninterrupted operation with, at the same time, greater working performance and lower costs is made possible in that, in a first step, an abrasive suspension (34) containing abrasive and water is provided at normal pressure, in a second step the provided abrasive suspension (34) is brought to a working pressure that is greatly above normal pressure, and in a third step a water jet (45) containing abrasive is produced, with a nozzle (44), from the abrasive suspension (34) that is under the working pressure.

Abstract: A carrier head that has a base assembly, a retaining ring assembly, a carrier ring, and a flexible membrane is described. A carrier ring has an annular upper portion and an annular lower portion having a lower surface with a smaller inner diameter than the upper surface of the annular upper portion, wherein the carrier ring circumferentially surrounds a retaining ring and has a lower surface to contact a polishing pad.

Abstract: An exemplary grinding device includes a fixed barrel, a rotatable barrel, a grinding plate, an actuator and a cleaning assembly. The fixed barrel defines a chamber and includes a number of inner sidewall substantially parallel to a central axis, each of which defines a holding groove for holding a workpiece. The rotatable barrel is received in the chamber and includes an outer side substantially parallel to the central axis and defines an installation groove. The grinding plate is installed in each of the installation grooves. The actuator is configured for driving the rotatable barrel to rotate and simultaneously move up and down in the first chamber, such that the grinding plates contact the workpieces and grind the workpieces. The cleaning assembly is situated under the fixed barrel for cleaning the workpieces.

Abstract: A retainer is used with an apparatus for polishing a substrate. The substrate has upper and lower surfaces and a lateral, substantially circular, perimeter. The apparatus has a polishing pad with an upper polishing surface for contacting and polishing the lower face of the substrate. The retainer has an inward facing retaining face for engaging and retaining the substrate against lateral movement during polishing of the substrate. The retaining face engages a substrate perimeter at more than substantially a single discrete circumferential location along the perimeter.

Abstract: A nozzle, a nozzle unit having a plurality of nozzles, and a blasting machine equipped with the nozzle unit, which can achieve a micro-machining with a high precision and a high productivity for the blasting process, are provided. Since the portion for escape 13c is formed at the distal end of the ejecting portion 13, if the distance between the surface of the work and the nozzle 11 is shortened to suppress the broadening of the flow of the abrasives, the reflected abrasives do not remain within the space between the surface of the work and the distal end of the ejecting portion 13. Thus, the blasting process with a high precision can be achieved. Further, since the nozzle 11m and the nozzle 11n can be arranged so as to correspond to the width of the surface of the work to be processed by the rotational device 16, it is possible to blast a wider area of the surface of the work while the nozzle unit 10 or the blasting machine 20 sweep one time.

Abstract: Disclosed is a polishing method for polishing a surface of a structure for magnetic-head manufacture by CMP in the process of manufacturing a magnetic head using a ceramic substrate made of a ceramic material containing AlTiC, the structure including the ceramic substrate and one or more layers formed thereon, and having the surface to be polished. The polishing method uses a retainer ring made of a ceramic material containing AlTiC.

Abstract: A guide assembly for an ice skate sharpener cooperates with a template of a desired contour of a skate blade to control the relative disposition of a sharpening wheel and a skate blade. The guide assembly comprises a base and a carriage slidably mounted on the base so as to be moveable, relative to said base, along a predefined path. A support is provided for connection to a skateholder. The support is connected to the carriage to permit movement of a skateholder in a direction normal to the path. The support inhibits relative movement between the carriage and a skateholder in a direction parallel to said path. A follower connected between the skateholder and template, control movement of the skateholder in a direction normal to the path as the carriage is moved along said predefined path. The skateholder therefore follow the contour of the template.

Abstract: A chemical mechanical polishing apparatus includes a container, a platen, first and second brushes, a polishing pad, a carrier, and a slurry supplier. The container has a bottom wall and a side wall. The side wall has an inwardly-extending upper portion. The platen is supported over the bottom wall. The platen is positioned lower than the inwardly-extending upper portion. The first brush brushes the side wall. The first brush is fixed to a side surface of the platen. The second brush brushes a side surface of the platen. The second brush is fixed to the bottom wall. The polishing pad is attached to the platen. The carrier presses a workpiece to be polished against the polishing pad. The slurry supplier supplies a slurry onto the polishing pad.

Abstract: Thus, according to one aspect, the invention provides A system for mounting an abrasive tool to a drive plate of a polisher or grinding tool, the system comprising: an intermediate element mounted to a surface of the drive plate via a first securing means; and a second securing means for securing the abrasive tool to the intermediate element. The intermediate element may be a tool mounting plate and the second securing means is at least one pin and spring assembly. The intermediate element may be a ring and the second securing element comprises magnets and pins. The intermediate element may be a circular bracket and the second securing element comprises rotary slot attachment.

Abstract: The invention emanates from a hand-held grinder, in particular an orbital grinder, with at least one handle (10) in or on a housing part (19) and with a drive unit (12) to drive a grinding disc (14) in or on a disc-shaped tool carrier (13) in a housing (11), wherein the grinding disc (14) is on a grinding disc plane (16) and the direction of force (17) is perpendicular to the plane (16) of the grinding disc. The invention proposes that the handle (10) is connected to the housing (11) through at least one vibration decoupling element (18, 71). The invention also relates to a vibration decoupling device of a hand-held grinder.

Abstract: An insertion tool (12) for an angle grinder (2) that has a hub (16) with at least a first fastening means for fastening the hub (16) to a driving device (22) of the angle grinder (2). The first fastening means if located on a partial circle (54) with a radius (56) of between 12 mm and 25 mm.

Abstract: A carrier head that has a base assembly, a retaining ring assembly, a carrier ring, and a flexible membrane is described. A carrier ring has an annular upper portion and an annular lower portion having a lower surface with a smaller inner diameter than the upper surface of the annular upper portion, wherein the carrier ring circumferentially surrounds a retaining ring and has a lower surface to contact a polishing pad.

Abstract: A device or tool setter has the purpose of setting the position of a support bar, adjustably connected to a grinding machine, in relation to a rotatable grindstone of the machine for obtaining a desired edge angle of a tool supported for grinding by the support bar. The device is provided with discs for defining two contact points with the grindstone and a hole for connection to the support bar.

Abstract: A device or tool setter has the purpose of setting the position of a support bar, adjustably connected to a grinding machine, in relation to a rotatable grindstone of the machine for obtaining a desired edge angle of a tool supported for grinding by the support bar. The device is provided with discs for defining two contact points with the grindstone and a hole for connection to the support bar.

Abstract: A retaining ring has a generally annular body with a top surface, a bottom surface, an inner diameter surface, and an outer diameter surface. The outer diameter surface includes an outwardly projecting flange having a lower surface, and the bottom surface includes a plurality of channels.

Abstract: An adapter is disclosed for mounting a tool on an oscillating drive having a drive shaft that can be driven to oscillate about its longitudinal axis, wherein the adapter is passed by a central opening, and has at its drive end at least one positive-locking element for positive connection with the tool, the positive-locking element having the shape of a regular polygon, or a plurality of positive-locking elements arranged on a circle concentric to the center axis, or a plurality of outwardly extending convex projections having rounded tips and being connected with neighboring projections via rounded concave lateral flanks, wherein the positive-locking elements on the drive end are configured for positive-locking connection with a matching positive-locking counter-element on the drive shaft, and wherein the adapter has a second receptacle on its tool end for effecting connection with a tool having a shape different from the first receptacle and being configured as a circle, or as a plurality of positive-locking

Abstract: The present invention provides a woodwork grinder, which can allow the grinding axle to be positioning quickly for replacement, so that the replacement can be carried out smoothly; it comprises a flexible insert rod on the grinding based of the grinding axle, and at least one insert slot on the side of the rotary axle of the grinding axle, so that the insert rod can be inserted into the insert slot when the rotary axle is stationary to position the rotary axle, and operators can use tools to assemble or disassemble the grinding axle so that the assembling/disassembling process can be carried out conveniently.

Abstract: The edge effect or variation in polishing edge profile on a substrate undergoing CMP is reduced by structuring a retaining ring, housed in a carrier head for retaining the substrate, such that the polishing edge profile shifts back and forth with respect to the center of the substrate. Embodiments include structuring the retaining ring such that the width between inner and outer surfaces varies by an amount sufficient to compensate for polishing edge profile variation. Embodiments also include structuring the retaining ring such that the distance from the outer surface to the geometric inner surface varies. Embodiments further include structuring the retaining ring such that the distance between the outer surface to the perimeter of the substrate retained by the inner surface of the retaining ring varies.

Abstract: A hand-held power tool has a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4), a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) of the drive spindle (2) and its clamping surface (6), and a safety spring (9) located between the disc-shaped tool (5) and an inner recess (8) formed in the clamping surface (6) of the locking nut (7), radially preloaded against the locking thread, and having at least one radial, outwardly projecting nose (10), with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11) associated with the at least one nose (10).

Abstract: The invention relates to a method of manufacturing rimless spectacles in which fasteners of the lugs and the bridge of the spectacles are adhesively bonded to the front side or the rear side of the lenses. In the method first of all two lens blanks are manufactured of a plastic material to the front and rear side of which a coating is applied. The two coated lens blanks are cut and ground in a way that two lenses having a desired lens shape are obtained. At predetermined mounting positions for the fasteners of the lugs and the bridge on the front or rear side of the lenses the coating is removed so as to form joining surfaces which substantially correspond to the joining surfaces of the fasteners as to shape and dimensions. The fasteners are then adhesively bonded to the front side and/or to the rear side of the lenses at the mounting positions.

Abstract: Methods and apparatus are provided for polishing a notch of a substrate using a polishing tape. In some embodiments, a polishing head may be provided that is adapted to apply the polishing tape against the notch of the substrate, including: a polishing pad having a cavity adapted to be filled with a pressure-controlled medium; and a tip region having a shape that corresponds to a shape of the notch, wherein the polishing pad is adapted to contact the polishing tape and press the polishing tape against the notch. Numerous other aspects are provided.

Abstract: A wheel scraper for a floor sander attaches to the swivel support wheel of a floor sander and scraper debris from the support wheel in order to prevent debris accumulation on the support wheel. The device includes a frame that attaches to the floor sander and that positions a scraper arm that contacts the rolling surface of the support wheel. A spring biases the scraper arm against the support wheel. The scraper arm has a generally U-shaped opening that receives the support wheel and that also scrapes debris from the side walls of the support wheel.

Abstract: The present invention discloses a perforated sandpaper alignment device, which is used to accommodate and position perforated sandpapers having multiple through-holes thereon and comprises a seat. The seat has a base; the base has a column, which the perforated sandpapers are put around, and at least one fixing pole, which is arranged corresponding to one through-hole and used to position the perforated sandpapers. Thereby, multiple perforate sandpapers may be put on the seat and positioned by the seat. The present invention can make the storage of the perforated sandpapers easier. Further, the present invention enables the user to easily and precisely attach the perforated sandpaper to the grinding disc of a grinder.

Abstract: The present invention discloses a fast-perforated sandpaper-replacing device, which is used to attach a perforated sandpaper to a grinder. The device of the present invention comprises a casing. The casing has a through-hole, an aligner installed on its surface, and a movable member installed thereinside. An elastic element is arranged between the movable member and the bottom of the casing. A perforated sandpaper alignment device, which penetrates the through-hole, is coupled to the movable member. A grinder is aligned to the fast-perforated sandpaper-replacing device with the aligner. When pressed by a force, the grinder further presses down the movable member and the elastic element and moves toward the perforated sandpapers accommodated by the alignment device. Thus, the grinding disc of the grinder can precisely stick onto the topmost perforated sandpaper.

Abstract: A tool and method for assessing whether a disk carrier, and especially a carrier for holding semiconductor disks, is properly dimensioned. The tool has a body that includes a socket in which a portion of the disk carrier will seat fully if the disk carrier is properly dimensioned. Alignment structures may be provided in the socket to align with features of the carrier to assist in determining whether the disk carrier is properly dimensioned. The socket may include two spaced apart cavities that correspond with end portions of walls of the disk carrier.

Abstract: A blade grinding tool includes a main base, a sucker mounted on the main base and attached to a surface, and a grinding unit mounted on the main base for grinding a blade of a cutting tool. Thus, the blade grinding tool is attached to a surface, so that a user needs not to hold the blade grinding tool by his one hand when grinding the blade of the cutting tool by the grinding unit, thereby facilitating the user grinding the blade of the cutting tool, and thereby protecting the user's safety.

Abstract: The invention provides a pad removal apparatus and method that enables improved pad removal from a platen.

Abstract: An apparatus to facilitate the replacement of a grinding wheel secured to a mounting plate. The apparatus includes a frame having two spaced-apart uprights. An elongated support bar extends between and is pivotally mounted to the uprights while a mounting plate of a grinding wheel is detachably secured to the support bar. A lift table is mounted to the frame between the uprights and movable between a raised position in which the lift table is positioned adjacent the support bar and a lowered position in which the lift table is spaced downwardly from the support bar. The lift table is dimensioned to support a grinding wheel. An actuator is mounted to the frame and selectively moves the lift table between its raised and lowered positions.

Abstract: A floor sanding vacuum is designed to be used in conjunction with floor sanding machines to provide a near dust free process for sanding floors. A displacement blower is driven by a gasoline or electric motor which creates a high vacuum that draws air through the sanding machine via a flexible hose connected to a cyclone separator where the sanding debris drops into an integral hopper. After the cyclone, the air is drawn through an air filter to the blower where the cleaned air is discharged through either an optional integral silencer built into the base of the vacuum or a commercially available silencer for noise reduction.

Abstract: A retaining ring has a generally annular body with a top surface, a bottom surface, an inner diameter surface, and an outer diameter surface. The outer diameter surface includes an outwardly projecting flange having a lower surface, and the bottom surface includes a plurality of channels.

Abstract: In a grinding machine grinding a workpiece W by a grinding wheel G to supply coolant to one of a grinding point P or the workpiece W by way of a relative movement between the grinding wheel W rotatably supported on a wheel slide 11 and the workpiece W supported by a work support device 17, air layer 36 flowing on a circumferential surface Gc of said grinding wheel G by blowing hydraulic jet 35 transversally from one side to the other side of the grinding wheel G along the circumferential surface Gc at an upper stream position of a rotational direction of the grinding wheel G from the grinding point P. Mist of coolant blown by the hydraulic jet 35 through a recovering port 37, 43, 53 mounted on a wheel guard 20 covering a part of the grinding wheel G.

Abstract: A power tool with a housing (12) and a tool (18, 22) located thereon such that it is capable of being driven in a rotating and/or oscillating manner, the tool being operable as directed using vacuum flow, in particular using a vacuum cleaner. The power tool is made particularly powerful by the fact that a radial turbine wheel (34) with forward-guiding and rearward-guiding vane rows (44, 48) functions as the drive.

Abstract: A retaining ring assembly for use in chemical mechanical polishing that includes an annular plastic retaining ring portion defining an annular projection thereon, an annular metal backing defining an annular channel therein for receiving the projection and a pair of elongated spring members concentrically disposed about the annular projection on the retaining ring. The channel in the backing is sized so as to receive the annular projection on the retaining ring and spring members therein upon the retaining ring being urged against the backing whereupon the spring members bear against the projection on the retaining ring and portions of the annular backing so as to releasably secure the retaining ring to the backing such that the retaining ring can be replaced upon becoming worn during use and the metal backing can be reused.

Abstract: A positioning jig which is applied to a spray polishing device which sprays a polishing liquid to a material to be polished and polishes the material to be polished, determines a relative position of a material to be polished and a polishing liquid spraying nozzle.

Abstract: A compressible film that is detachably securable to a surface of a rigid structure in the carrier head. The compressible film has a plurality of apertures positioned to create a non-uniform pressure distribution on a substrate during polishing so as to improve polishing uniformity. The apertures may be spaced and positioned to provide a pressure distribution on the substrate that is locally uniform but globally non-uniform.

Abstract: A platen for use in chemical mechanical planarization (CMP) systems includes a platen plate that has at least one recess defined therein. The at least one recess has an input port formed therein. A porous material is disposed in the at least one recess. The porous material has a porosity sufficient to restrict air flow therethrough so as to reduce an amount of air required for a CMP operation.

Abstract: A dust abatement vacuum hood, provided for a flush-cutting concrete saw, includes a rigid shell that is preferably either vacuum formed or injection molded from a tough polymeric material that may be reinforced with structural fibers. Alternatively, the vacuum hood may be stamped or cast from a durable metal. The vacuum hood is equipped with a vacuum port to which one end of a vacuum hose may be attached. The opposite end of the vacuum hose is attached to a vacuum cleaner system. The vacuum hood has a spring-mounted attachment bracket that can be bolted directly to the concrete saw. As the blade of the concrete saw rotates, pulverized concrete is discharged into a chamber opening of the vacuum hood. Internally, the vacuum hood is shaped so that the pulverized concrete is directed toward the vacuum port, from where it is directed to the vacuum cleaner system.

Abstract: A mask for removably covering an IOL to protect a sharp peripheral edge of the IOL optic during polishing.