Abstract: A sanding block comprises a support block having a right side and a left side. A gripping slot extends from the right side to the left side. The gripping slot is capable of receiving ends of a sheet of sandpaper folded around the support block.

Abstract: According to the process for producing a glass substrate for an information-recording medium of the present invention, a glass plate 10 is roughly polished by a polishing machine 1 using a polishing liquid 7 containing a polishing agent containing cerium oxide as a main component in the rough polishing step, followed by cleaning so as to adjust the amount of cerium oxide on the surface of the glass plate to be 0.125 ng/cm2 or less. The glass plate after rough polishing is thereafter finely polished with a polishing agent containing colloidal silica in the fine polishing step.

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: A first angular grinding wheel and a straight grinding wheel having rotation axes parallel to each other are arranged on a swivel slide that turns about a turning axis. A reference symmetry plane (MA) that is parallel to a grinding wheel rotation axis and that includes the turning axis and a reference perpendicular plane (MB) that is perpendicular to the reference symmetry plane and that includes the turning axis are defined. A grinding reference point (PA1) of the first angular grinding wheel (TA1) and a grinding reference point (PP1) of the straight grinding wheel (TP1) are arranged asymmetrical with respect to the reference symmetry plane. A distance from the grinding reference point of the straight grinding wheel to the reference symmetry plane is equal to a distance from the grinding reference point of the first angular grinding wheel to the turning axis.

Abstract: A polishing device for polishing optical lenses having a tiltable base part for directly or indirectly receiving a polishing plate, which base part is connected to a polishing spindle having an axis of rotation D in order to be rotationally driven, wherein a rotary joint for supplying a polishing agent is provided, which rotary joint is at least partly arranged opposite said polishing spindle, relative to the base part, and a coupling element is provided by means of which the rotary joint can be detachably push-fitted or clipped onto a polishing spindle. A method for polishing selected zones of aspherical lenses which are not rotationally symmetric using a polishing plate which is guided by a polishing spindle so as to be tiltable, wherein during polishing, a polishing agent is introduced between said polishing plate and the lens via a rotary joint arranged between said polishing spindle and said polishing plate.

Abstract: In a method for multiple cutoff machining a rare earth magnet block, a cutting fluid feed nozzle having a plurality of slits is combined with a plurality of cutoff abrasive blades coaxially mounted on a rotating shaft, each said blade comprising a base disk and a peripheral cutting part. The slits in the feed nozzle into which the outer peripheral portions of cutoff abrasive blades are inserted serve to restrict any axial run-out of the cutoff abrasive blades during rotation. Cutting fluid is fed from the feed nozzle through slits to the rotating cutoff abrasive blades and eventually to points of cutoff machining on the magnet block.

Abstract: A pocket (6) is machined into the surface of a component (9) by pressurising a fluid (1) and directing a jet (11) of the pressurized fluid (1) at the surface to be machined. Continuous relative movement is provided between the component (9) and the pressurized jet (11) of fluid (1) during machining. Material is removed from the component (9) in a series of layers, whereby the path of the fluid jet (11) in one of the layers is perpendicular to the path of the fluid jet (11) in the subsequent layer. The fluid jet (11) operates continuously until the required amount of material has been removed from the component (9).

Abstract: An inlaid stone composite broadly includes a stone body and a stone inlay assembly secured to the stone body. The inlaid stone composite is constructed by forming a groove in the stone body, with the groove extending inwardly from an edge surface of the stone body, securing a plurality of stone segments relative to one another exteriorly of the groove to provide the stone inlay assembly, and securing the stone inlay assembly within the groove to form an inlaid margin.

Abstract: An ultra-low temperature magnetic polishing machine includes a housing defining therein a grinding chamber, a door hinged to the housing and controllable to open/close the grinding chamber, a motor mounted inside the housing below the grinding chamber, a magnetic disc set in between the grinding chamber and the motor and rotatable by the motor to cause an alternative magnetic field in the grinding chamber, a freezer having an output pipeline inserted into the grinding chamber and freezing medium deliverable through the output pipeline into the grinding chamber, a container set in the grinding chamber, and magnetically conductive grinding media put in the container.

Abstract: In a method for multiple cutoff machining a rare earth magnet block, a cutting fluid feed nozzle having a plurality of slits is combined with a plurality of cutoff abrasive blades coaxially mounted on a rotating shaft, each said blade comprising a base disk and a peripheral cutting part. The slits in the feed nozzle into which the outer peripheral portions of cutoff abrasive blades are inserted serve to restrict any axial run-out of the cutoff abrasive blades during rotation. Cutting fluid is fed from the feed nozzle through slits to the rotating cutoff abrasive blades and eventually to points of cutoff machining on the magnet block.

Abstract: A finishing machine with at least two finishing stones and a stone turning unit is proposed, in which the stone turning unit may be coupled to a rotary drive of the workpiece holder. A separate drive for the stone turning unit may thus be omitted, which results in a reduced weight of the stone turning unit and therefore lower drive power requirement of the stone turning unit and an improved processing quality.

Abstract: A double-disc grinding apparatus having at least: a rotatable ring-shaped holder for supporting a sheet-like wafer having a notch for indicating a crystal orientation from an outer circumference side along a radial direction, the holder having a protruding portion to be engaged with the crystal-orientation-indicating notch; and a pair of grindstones for simultaneously grinding both surfaces of the wafer supported by the holder, in which the holder is provided with at least one protruding portion separately from the protruding portion to be engaged with the crystal-orientation-indicating notch, and the both surfaces of the wafer are simultaneously ground by the pair of the grindstones while the wafer is supported and rotated with the at least one protruding portion being engaged with a wafer-supporting notch formed on the wafer.

Abstract: A grinding or polishing disc which in addition to having improved viewing areas so that the object can be appropriately and clearly viewed as it is being ground or polished, also has vertical fins which create an airflow vortex similar to a turbine that go into the viewing locations to provide a cooling airflow to the workpiece so that in addition to being able to see the workpiece, the airflow cools the workpiece as the disc is being rotated.

Abstract: A polishing apparatus includes a polishing table with a polishing pad at an upper surface, and a conditioning disc carrying out conditioning of the polishing pad, and a moving mechanism (constructed, for example, from a swing arm) capable of moving the conditioning disc to a standby position above the polishing pad, and a spraying mechanism (constructed, for example, from a washing water nozzle) that sprays liquid to the conditioning disc positioned at the standby position so as to wash or wet the conditioning disc.

Abstract: An improved retaining ring used for chemical mechanical polishing of substrates, such as semiconductor wafers, to hold a substrate in place during the polishing process. The retaining rings are configured with inserts through which fasteners are positioned to securely affix the retaining ring to the polishing head. The inserts assist in dissipating the force of the fasteners, thereby allowing a more uniform polishing surface. The opening through which the fastener is positioned may be configured with concave or convex side walls to assist in dissipating the force of the fasteners during installation of the retaining ring or the polishing process.

Abstract: A method of operating a substrate processing apparatus, upon the occurrence of a nonfatal failure in the apparatus, makes it possible to continue part of the apparatus operations for substrates to clean and recover a substrate or to easily discharge a substrate from the apparatus, without stopping an entire apparatus, thereby reducing the risk of a substrate becoming unprocessable. The method of operating a substrate processing apparatus having a polishing section, a cleaning section and a transferring mechanism, includes: classifying substrates, upon detection of a malfunction in any of the polishing section, the cleaning section and the transferring mechanism, according to the site of the malfunction and to the positions of the substrates in the substrate processing apparatus; and carrying out an operation for each of the substrates after the detection of the malfunction, the operation varying depending on the classification of the substrate.

Abstract: An object of the present invention is to provide at a relatively cheap price a wire saw device capable of effectively preventing slurry from splashing onto the top surface of a work and effectively suppressing increase in nanotopography and Warp. The wire saw device 1 of the present invention has: a group of multiple wires 4 formed by suspending a wire 3 over a set of rollers 2, 2, 2 separate from each other so as to be aligned in a cutting side thereof in parallel to one another in the roller shaft direction X and capable of running in a direction orthogonal to the roller shaft direction; a work holding portion 5 for holding a work W and moving the work W in a direction of pushing the work W with respect to the group of multiple wires 4; and a nozzle 6 for supplying slurry to the group of multiple wires 4 from at least a position on the upperstream side in the running direction of the multiple wires 4, with respect to a path along which the work W is pushed into the wire 3.

Abstract: A razor blade and support assembly is provided which flexes in response to shaving forces near slots in the blade support. A razor cartridge includes one or more of the aforementioned razor blade and support assemblies positioned in a housing. The razor cartridge may be permanently or removably coupled to a handle to provide a shaving razor.

Abstract: A nozzle for cooling lubricant is described having a connecting chamber with a chamber inlet and with a deflector plate in the interior of the connecting chamber that is held on at least two mounting means, a main chamber that is removably mounted by the rear face on the front face of the connecting chamber and has a diffusion plate with drilled holes, and a nozzle plate that is removably mounted by the rear face on the front face of the main chamber and has a hole pattern adapted to a grinding wheel profile.

Abstract: In a grinding machine, a retraction grinding is performed after a first advance grinding. Within a rotational range for a cylindrical workpiece to rotate from a present rotational phase to a target rotational phase in the retraction grinding, target grinding resistances in respective rotational phases are generated based on residual grinding amounts in the respective rotational phases of the cylindrical workpiece. Then, the retraction grinding is performed and controlled to make a grinding resistance detected by a force sensor agree with the target grinding resistances in respective rotational phases.