Abstract: A powered clamp for transmitting torque to a drill pipe comprises an outer housing disposed around an axial central passage and connected to a plurality of carrier guides defining a plurality of radial slots. An inner housing defines a coaxial central passage, is rotatably connected to the outer housing, and defines a plurality of actuator slots having a spiral configuration relative to the centerline axis. A carrier is slidably disposed in each slot between the carrier guides and has a carrier pin extending into a respective one of the actuator slots. At least one powered linear actuator is connected between the outer and inner housing to selectively rotate the housings relative to one another. This rotation causes the carriers to move radially inward and outward as the carrier pins travel along the actuator slots, selectively gripping and releasing the drill pipe.

Abstract: A double-side polishing method of polishing both surfaces of a wafer by holding the wafer with a carrier including a holding hole configured to hold the wafer and a ring-shaped resin insert disposed along an internal circumference of the holding hole, the resin insert having an inner circumferential surface configured to contact a peripheral portion of the wafer, interposing the carrier between upper and lower turn tables to which polishing pads are attached, polishing both the surfaces of the wafer while maintaining planarity of the inner circumferential surface at or below 100 ?m and verticalness of the inner circumferential surface at or below 5°. The method can inhibit the degradation of the flatness of the polished wafer, such as particularly an outer circumferential sag, due to variation in shape of the inner circumferential surface of the resin insert of a carrier.

Abstract: A method including providing a ceramic log (300) with a first end and an opposing second end; providing one or more cutting devices (100) comprised of a dual bladed cutting member (200); and removing material by cutting at least the first end with the dual bladed cutting member (200), wherein a first blade (210) of the dual bladed cutting member (200) provides a finished surface and a second blade (220) removes a percentage of scrap above the finished surface. An apparatus (100) for cutting a ceramic log (300).

Abstract: A compressible handle for a tool is reversibly compressible along its longitudinal axis during use of the tool. The handle includes a first longitudinal portion and a second longitudinal portion which can slide in opposing directions relative to each other along the longitudinal axis of the handle. The handle further includes a biasing element providing a biasing force to bias the first longitudinal portion and the second longitudinal portion away from each other, and a bias adjustment mechanism by means of which a user can apply and vary a load applied to the biasing element so as to modify the magnitude of the biasing force and thereby adjust the compressibility of the handle.

Abstract: A system including at least one means for mechanical processing of surfaces using a blasting agent (5), in particular steel or cast iron beads. An additive (6) for degreasing and cleaning of the surface to be blasted (2) and/or of the blasting agent is provided with the blasting agent (5), and comprising a granular material (6), which exhibits a lower breaking strength under the mechanical stresses that the blasting agent (5) is subject to during the blasting procedure than the at least one means for mechanical processing of the surfaces themselves. As the granular material (6) breaks down, additional additive (6) is added into the blasting agent (5) such that the proportion of the additive (6) in the blasting agent mixture blend (5) remains largely generally constant even at a prolonged operation of the device.

Abstract: The purpose of the present invention is to provide a very practical nozzle body.

Abstract: The present disclosure defines a hand operated grinding tool for finishing an interface surface of a fluid conduit. The grinding tool includes a fixture having grinding tool yoke and a work piece yoke. A shaft with a tool head connected to one end and an actuator connected to the other end is configured to slide and rotate relative to the grinding tool yoke. The tool head can be configured to engage and finish a surface of a tube and/or a male fitting.

Abstract: A water pipe wrench structure consisting of a first wrench body and a second wrench body pin jointed by a control component. The first wrench body includes an actuating piece. A tooth space is positioned on this actuating piece. This actuating piece and a tooth piece extend with a uniform curvature. The second wrench body includes a perforation to pass the control component through this perforation and the tooth space. This control component includes a column piece and a grinding tooth piece, and the grinding tooth piece can be moved by pressure, so that the grinding tooth piece can be engaged to or separated from the tooth space and thus end the movement of the control component.

Abstract: A wafer edge trimming tool includes an abrasive tape and a holding module configured to hold the abrasive tape against portions of an edge of a rotating wafer during a wafer edge trimming process.

Abstract: A coated abrasive product includes green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder, wherein the abrasive aggregates are dispersed within a polymer resin coating, and wherein the coated abrasive product is capable of superfinishing a metal surface having an initial Ra in the range of about 1.5 micro inches to about 12.5 micro inches prior to application of the coated abrasive product and after application the surface has an Ra of less than 1.0 micro inch.

Abstract: An adapter according to one aspect is an adapter for fixing to a shaft of a grinding machine a grinding wheel having a through-hole where the shaft is inserted. The adapter is provided with a main body having at least a portion thereof inserted into the through-hole, the main body including an outer wall that contacts a wall of the through-hole and an inner wall that forms an opening that corresponds to the shaft, and a plurality of reinforcing parts provided in predetermined intervals along a circumferential direction of the main body. Each reinforcing part extends from the inner wall to the outer wall, and a notch is formed in each reinforcing part.

Abstract: Embodiments of the present invention relate to roll polishers that may be utilized with rollers in rolling stands that have restrictive space requirements. The roll polisher of the present invention comprises a tube with pivot actuators used to engage and disengage a rolling pad on the surface of a roller. Transverse actuators may be located at least partially within the tube, or in other embodiments located outside of the tube, and used to move the tube, and thus, the rolling pad, transversely back and forth across the surface of the roller. The roll polisher may operate apply a force to the pad engaging the rolling surface to remove defects and smooth the surface of the polisher.

Abstract: A system of polishing a concave surface of an external piece for a timepiece, including a securing device including a support that carries the piece, and a grinding device including an abrasive mechanism rotatably mounted along a first axis and configured to polish the piece along a first curvature. The securing device further includes a moving mechanism of the support so that the support imparts a back-and-forth motion along a second axis and a contact surface of the abrasive mechanism is curved to polish the piece along a second curvature in addition to the first curvature. The system can be applied to the field of crystals for a timepiece.

Abstract: A combined working machine includes a base frame having a sloped surface, a first headstock installed on the sloped surface, a first main spindle rotatably provided on the first headstock, a second headstock installed on the sloped surface oppositely to the first headstock, a second main spindle provided on the second headstock, a tool head installed on the sloped surface on one side of the first headstock, a tool head provided in the tool head and having a tool attachment base to which a cutting tool is attached, a grinding head installed on the sloped surface on another side of the first headstock, and a grinding head body provided in the grinding head and supports a rotatable rotary shaft. A grinding wheel for grinding is exchangeably attached to the rotary shaft of the grinding head. According to the combined working machine, cutting and grinding can be carried out concurrently.

Abstract: Provided is a shot peening device with which recovered projection material and foreign bodies can be more precisely separated while inhibiting an increase in the size of the device. The shot peening device is provided with: a projector which projects projection material onto a workpiece (W); recovery mechanisms which recover the projection material projected by the projector; and a wind power sorting mechanism in which recovered projection material is allowed to fall freely while an upward air current is applied to the recovered projection material, and foreign bodies included in the recovered projection material are separated from the recovered projection material.

Abstract: The present invention relates to lining carrier for a sanding pad lining, in particular for use with a sanding pad for pressing sanding surfaces against workplaces in segment-belt and wide-belt sanding machines. Here, the lining carrier has at least one recess, in particular a groove.

Abstract: The invention provides a double-side polishing method including first polishing at a high polishing rate, second polishing at a low polishing rate, dividing a straight line extending between the outermost circumferences of the wafer through the center into prescribed sections, and optically measuring a cross-sectional shape of the sections; applying a weight predetermined for each section to the cross-sectional shape to quantify flatness of each section; and determining polishing conditions of the first and second polishing in subsequent polishing on a basis of the quantified flatness, wherein a beam diameter of a measurement apparatus used to measure the cross-sectional shape of outermost sections is smaller than that used to measure the cross-sectional shape of the other section. The method can measure the shape of the wafer up to its outermost circumference with high precision without reducing productivity, and improve the flatness of the entire wafer including its outermost circumference.

Abstract: The invention relates to a method for modifying the geometry of gear wheel tooth flanks with a tool with a toothing that engages with the gear wheel during a precision machining. A varied profile is produced on the tool over the width of the tool, in that during a dressing procedure a dressing wheel is moved along the tooth flank of the tooth to be dressed. The width of the teeth of the dressing wheel is much smaller than the width of the tool. In order to cover the width of the tool a length must be covered corresponding to a multiple of the width of the teeth of the dressing wheel. After the dressing, the precision machining of the gear wheel is carried out with the tool. Since the dressing wheel is moved with a changing pitch and a changing crossed axes angle relative to the tool, the modification of the tooth flank geometry can be reproduced in the tool.

Abstract: A grinding method for grinding a plurality of platelike workpieces at a time is provided. The workpieces are attached to a support member and held on a chuck table. A grinding wheel is brought into contact with the workpieces to grind the workpieces at a time. The grinding wheel includes a disk-shaped wheel base having a first surface, a plurality of first abrasive members arranged annularly on the first surface of the wheel base, and a plurality of second abrasive members arranged annularly on the first surface of the wheel base radially inside the first abrasive members in a concentric relationship with the first abrasive members. The radial spacing between the first abrasive members and the second abrasive members is set larger than the minimum spacing between any adjacent ones of the workpieces.

Abstract: An exchangeable abrasive mechanism or disc for use on abrasive-mechanism carriers having suction holes includes a plurality of through openings that each have a centroid. The through openings are differentiated into three groups that differ in the radial disposition of the centroids. A first group comprises at least one, but not more than four, through openings of a first cross section. At least two of the through openings of the first group are disposed on a first circumcircle diameter that is substantially identical to one of the hole-circle diameters such that, when the abrasive mechanism is correctly disposed on an abrasive-mechanism carrier, they are in direct alignment with and can overlap, two corresponding suction holes. A second group of through openings of a second, preferably smaller, cross section, comprises at least four through openings that are disposed on a second circumcircle diameter that differs from the first circumcircle diameter.