Abstract: An assembly apparatus includes backup jigs, a press-fitting and caulking part, and an expansion part. The backup jigs is configured to back up arms of a yoke of the cross shaft universal joint from inside in an axial direction. The press-fitting and caulking part is configured to press-fit cup bearings from outside in the axial direction between bearing holes of the arms and a shaft portion of a cross shaft, and configured to caulk the cup bearings. The expansion part is configured to push a wedge body between the backup jigs and to expand the arms outward via the backup jigs. The press-fitting and caulking part is configured to press-fit the cup bearings and to caulk the cup bearings in a state in which the arms are expanded. The expansion part is configured to release an expansion of the arms after the press-fitting and caulking of the cup bearings.

Abstract: A cutting tool (35) for machining a differential case, the cutting tool (35) being attached to a machining apparatus and used to perform cutting on a spherical inner surface of a differential case (10), the cutting tool (35) including: a shaft part (50); a cutting edge (51) laterally protruding from the shaft part (50); a fixing part (53) formed at one end side of the shaft part (50) and that is for fixing the shaft part (50) to the machining apparatus; and a retaining part (54) formed at the other end side of the shaft part (50) and that is for retaining the shaft part (50) by the machining apparatus, wherein the cutting tool (35) is able to perform cutting on the spherical inner surface of the rotating differential case (10) in a both-ends-held state in which both the fixing part (53) and the retaining part (54) are supported by the machining apparatus.

Abstract: A method for manufacturing a composite brake disc including a brake ring with at least one braking surface and a brake disc chamber having a tubular section and a base part that is connected to the tubular section and by way of which a reference plane is defined. The brake disc chamber and the brake ring are joined together, and a wobble angle between the at least one braking surface and the reference plane is reduced by reshaping the brake disc chamber.

Abstract: A differential gear case is provided that includes a container housing of a differential gear, the container housing having on an outer surface thereof an annular flange that extends around an axis of rotation of the container housing, and one of two areas of the container housing that are separated by the annular flange being formed with an opening that is communicated with a containing space formed in the container housing. The area of the container housing that is formed with the opening is provided with a fixing portion used for fixing the differential gear case. The fixing portion includes two flat surfaces that are in parallel with a plane surface containing the axis of rotation of the container housing and arranged around the axis of rotation keeping a space therebetween.

Abstract: A blocking device (1) includes: a structure (10); a manipulation arm (30) mounted on the structure to be movable between two extreme positions and including gripper element (33) for gripping a blocking accessory for placing on an ophthalmic lens; guide element (50) for guiding the manipulation arm between its two extreme positions along a path that presents a curved portion and an adjacent rectilinear portion; and drive element (70) for changing the position of the manipulation arm and including a gearwheel that meshes with a rack (40). The rack forms part of the manipulation arm and presents a circularly arcuate portion (41) enabling the manipulation arm to be driven along the curved portion of its path, and a rectilinear portion (42) enabling the manipulation arm to be driven along the rectilinear portion of its path.

Abstract: A tube matrix and the corresponding method of joining a plurality of tubes to a base plate to create the tube matrix. The tube matrix has a base plate from which a plurality of parallel tubes extend. The base plate has holes formed though it to receive the tubes. The tubes are placed into the holes on the base plate. The tubes may have end flares that abut against the base plate and prevent the tubes from completely passing through the base plate. Once the tubes are in place in the holes of the base plate, the tubes and base plate are welded together with individual laser welds. The laser welds enable a very dense matrix of tubes to be welded to the base plate without damaging or obstructing the tubes.

Abstract: A clamp for a disk rotation driving device has a centering hole which is fitted to an outer circumference of a centering projection of a hub of the disk rotation driving device. A clamping screw is screwed into an axial center of the hub whereby a fastening head of the clamping screw fastens the clamp to the hub and a contact portion of the clamp comes in contact with an information recordable magnetic disk attached to the hub and presses onto the disk in a rotation axis direction. The clamp includes a centering cylinder bent in an axial direction. The centering cylinder has a circumferential inner surface which defines the centering hole. The rounded section is provided along an edge of the centering hole and has a radius smaller than the thickness of the centering cylinder. The fastening surface is continuous to the rounded section.

Abstract: The present invention relates to ferrules for use in fittings of the type that are used for gripping a body, such as a tube end. More particularly, the invention provides ferrules manufactured from hollow stock, such as welded hollow stock and processes for making such ferrules.

Abstract: A method of adjusting the position of a first object relative to a second object, the first object being releasably secured to the second object by a bolt. The method includes providing a precision movement tool comprising an L-shaped bracket having a base portion and a flange portion extending substantially perpendicularly from the base portion adjacent one end thereof, the base portion having an aperture adjacent an opposite end thereof, and a threaded adjustment bolt extending through a threaded aperture in the flange portion. The bolt is removed and the base portion of the precision movement tool is positioned so that the aperture in the base portion is aligned with apertures in the first and second objects from which the bolt has been removed. The precision movement tool is also positioned so that the flange portion overlies the first object such that the adjustment bolt can engage the first object.

Abstract: A method for automatically setting valve clearances in internal combustion engines (also known as “tappet setting” or “valve lash setting”) comprises a series of steps in which a rocker arm is set to a zero position that is recorded as a reference datum and an adjustment screw is then operated to set the rocker arm to a first reference position. The adjustment screw is then rotated through a predetermined angle so that the rocker arm is moved to a second reference position. The difference between the first and second reference positions and the predetermined angle are used to determine a coefficient relating the angular movement of the adjustment screw to linear movement of the rocker arm. The coefficient is then used to calculate the angular rotation of the adjustment screw required to set a predetermined valve clearance relative to the zero position. The initial adjustment of the rocker arm position serves to neutralize backlash in the valve drive train prior to setting the valve clearance.

Abstract: A method of balancing a rotor (10), the said method comprising the steps of determining the position of the center of mass of a rotor (10) to be balanced prior to the rotor (10) being machined to its final dimensions, and machining the rotor (10) to its final dimensions by removing material substantially along the length of the rotor (10). The material is removed in the direction of its axis such that the center of mass of the rotor is adjusted to be substantially co-incident with its axis of rotation (22).

Abstract: A method of manufacturing a tube for a vehicle driveshaft assembly forms a flat sheet of material having a greater thickness than other portions over a portion of its width and along its length, rolling the sheet about a longitudinal axis such that its lateral edges are mutually adjacent, then securing the lateral edges together by seam welding to form a tube. The mass distribution is not uniform because the wall thickness of certain portions of the tube is greater than the wall thickness of other portions of the tube. A tube yoke is machined and the angular location of its overbalance about its longitudinal axis is determined. The tube is secured to the tube yoke such that the angular location of overbalance of the yoke is aligned with the weld seam and diametrically opposite the region of the tube having the greater wall thickness.

Abstract: A refractory lining is formed in a furnace by providing a carrier for a lining form which has dimensions that provide a uniform space for the introduction of refractory material when the lining form is concentrically located within the furnace. The carrier concentrically engages and is attached to the lining form, and includes a portion that engages the furnace and locates the carrier and the lining form, when attached, concentrically within the furnace to provide a uniform space therebetween. The carrier can also have an upper surface that slopes downwardly from adjacent its center to its periphery to convey particulate refractory material poured onto the surface into the space between the lining form and the furnace. Further, a fixture is provided to hold the lining form concentric while the particulate refractory material is compacted by vibration.

Abstract: A method of balancing a rotor (10), the said method comprising the steps of determining the position of the centre of mass of a rotor (10) to be balanced prior to the rotor (10) being machined to its final dimensions, and machining the rotor (10) to its final dimensions by removing material substantially along the length of the rotor (10). The material is removed in the direction of its axis such that the centre of mass of the rotor is adjusted to be substantially co-incident with its axis of rotation (22).

Abstract: A method is provided for forming enlarged cylinder bores in an engine based on a family of internal combustion engines having an original cylinder bore axis for each bore, wherein each cylinder bore is constrained against enlargement toward one side. The method includes providing an offset axis parallel to the original cylinder bore axis and spaced toward an opposite side of the cylinder bore by a dimension equal to one half of a predetermined bore diameter enlargement, and centering the enlarged cylinder bore on the offset axis. The method preserves a minimum wall thickness from the cylinders to camshaft bores between the cylinder banks while the outward enlargement dimension is preferably limited to a value which does not require changing the cylinder head bolt pattern or reduce the wall thickness below minimum values in other portions of the cylinders.

Abstract: The invention concerns a method for machining crankshaft comprising the following main operations: determining starting points; machining the ends, bearings and crank pins; producing lubricating oil holes; finishing the ends, bearings and crank pins, dynamic measurement and optionally removing material for balancing purposes. The method is characterized in that it consists in carrying out dynamic mass measurements and eliminating material for balancing purposes, before the finishing operations. The invention also concerns a device for implementing said method. The invention is applicable to production lines machining and balancing crankshafts.

Abstract: A novel insert assembly for use in snowboards and other sporting equipment provides for embedded insert location, regardless of the properties of the insert material per se, and without requiring either expensive equipment or a complex location process. This is achieved by positioning a small inexpensive magnet on or within the insert cavity, or placing a plug-like magnet in the open threaded end of the inserts. After the board assembly is complete, a magnetic material such as iron powder is dusted on the surface of the board to react with the field lines created about each insert, revealing the insert location. Then, the board can be drilled to pierce the insert cap, and facilitate removal of any plug in the insert. It is also possible to provide, through powdered metal technology, an insert material which itself will produce the desired magnetic field of sufficient intensity at the dusted surface of the board.

Abstract: There is described a method for manufacturing fixing rollers and a roller body holding device utilized for manufacturing fixing rollers. The method includes steps of press-fitting flanges into a roller body, shaped in a hollow cylinder, from each of both end openings of the roller body with putting an elastic material between each of the flanges and the roller body; installing the roller body in a shaping mold so that the roller body is supported by the flanges and the elastic material at a predetermined position in the shaping mold; injecting a melted rubber into a space between the roller body and the shaping mold from an injection opening; and curing the melted rubber injected into the space. The roller body holding device for holding a roller body is shaped in a hollow cylinder and includes a flange, which is press-fitted into the roller body from each of end openings of the roller body; and an elastic material disposed between the flange and the roller body.

Abstract: A method for machine a V crankshaft. A measurement is made of the dynamic mass and the centering points are drilled. The reference surfaces are preset by machining the raw crankshaft reference surfaces before the dynamic mass measurement.

Abstract: In a component mounting device in which a component is picked up and mounted on a circuit board by a suction nozzle, an amount of displacement between a center position of the suction nozzle 11 and that of the picked-up component 12 is measured, and when it is larger than a preliminarily determined value, a warning is generated indicating that the parts cassette 3 from which the component 12 has been fed is in abnormal condition, as well as the mounting action of the component 12 is stopped.

Abstract: A method and apparatus to balance propeller blades including, but not limited to, those used on model aircraft provides relocation of the propeller's center mounting hole to the propeller's center of mass by installation of appropriate eccentric bushings into the center mounting hole, and preferably into an oversize center mounting hole that has been created in the propeller hub. Both spanwise and chordwise propeller balance can be made with this eccentric bushing method.

Abstract: A propeller balancing method and apparatus provides relocation of the propeller's center mounting hole to the propeller's center of mass. The method uses a conventional balance stand, by first attaching a balanced drill guide fixture to the hub of the propeller in such a way that the drill guide fixture can be moved slightly relative to the propeller hub to achieve balance and define a new center for the propeller. Once balance is achieved, the fixture and propeller assembly is removed from the balance stand. Then, a new oversize hole can be drilled in the propeller hub through the drill guide, and an appropriate (concentric) bushing installed.

Abstract: Resin, typically polycarbonate is injection molded into a disc substrate under select conditions, for example, at a mold temperature of 100-160.degree. C., an injection velocity of 100-120 g/sec., and a pressure of 10-60 kg/cm.sup.2, such that the birefringence of a radially inner portion of the substrate is higher by about 15-50 nm than the remaining substrate. A center hole is perforated in the substrate and a hub is attached to the substrate around the center hole. At the end of hub attachment, the substrate has a uniform distribution of birefringence over the entire area. Any increase of DC modulation is thus avoided.

Abstract: A method of manufacturing an engine block assembly which includes a one-piece cylinder block and cylinder head member including a cylinder block portion having a cylindrical bore with an inner end, and a cylinder head portion including a cylinder head surface at the inner end of the cylindrical bore, and a sleeve in the cylindrical bore and including an inner cylindrical surface engaging the cylinder head surface at the inner end of the cylindrical bore, the method includes the steps of fabricating a one piece cylinder head and cylinder block member including a cylindrical bore having, at the inner end thereof, a cylinder head surface, fabricating a sleeve with an inner cylindrical surface and an inner end, partially inserting the sleeve into the cylindrical bore such that the inner end of the sleeve is spaced from the cylinder head surface, boring the inner cylindrical surface of the sleeve, honing the inner cylindrical surface of the sleeve, and fully inserting the sleeve into the cylindrical bore such that

Abstract: A magnetic means for centering a flexible elongated mandrel within a vertical passage (chute) without any physical connection between the mandrel and the passage surface. The mandrel carries a tapered nose piece that includes an elongated magnetized rod. An array of cooperating magnets is arranged around the perimeter of the passage, so that the magnetic circuits of the rod and perimeter magnets interact to produce a radial repulsion of the rod to a position on the passage axis.

Abstract: A method of assembling side entry control stage blades in a rotor of a steam turbine, each blade including a cover, an airfoil, a platform and a root. The cover and the platform of each blade include leading and trailing surfaces which abut mating surfaces of the cover and the platform of an adjacent blade. The blades are installed in the turbine rotor, each blade centerline aligned along a radial line of the rotor. To establish tight contact between adjacent covers and between adjacent platforms, a wedge is inserted between the top of a rotor steeple and a bottom of a blade platform along one side of each blade. A shroud is riveted onto the covers of adjacent control stage blades which maintains the tight contact established by the wedges. The wedges are removed afer shroud attachment. The leading and trailing surfaces in one form may have an arcuate shape to provide better shock transfer in more than one direction.

Abstract: A method of centering a disk on a disk drive motor with respect to the rotational axis of the motor and/or for balancing the disk to reduce operating vibration of the disk and motor assembly. The centering/balancing method is performed by placing a contact element in contact with the outer diameter of the disk and moving the contact element towards the rotational axis of the motor until the inner diameter of the disk contacts a portion of the hub of the motor which protrudes into the center hole of the disk. Then, the disk is rotated while the contact element is simultaneously moved away from the rotational axis of the motor at a rate related to the rotational speed of the disk.

Abstract: A relatively large diameter gear in a cyclic motion generating mechanism is finished and assembled into the mechanism in a manner such that, although the gear may not be precisely truly circular, binding or interference with a meshed gear is eliminated while zero backlash exists at the cycle end position of the gear. After the teeth are formed on the gear blank, a series of diametral measurements to locate one position at which the maximum diameter intersects the pitch circle. A radius from this point of intersection larger than the designed radius of the pitch circle is then employed to locate a center of the blank about which the central opening is subsequently machined to establish the rotational axis of the finished gear.

Abstract: This invention is directed to a method of working the free end of heat exchanger tubes, and particularly the formation of braze cups, with the heat exchanger tubes in situ relative to the heat exchanger core with the method including the step of utilizing centering tooling positioned about a tube expansion rod to assure that the braze cup is centered relative to its respective tube axis.

Abstract: An article is molded in a mold cavity where the article has a profiled bore extending axially therethrough which has a precisely centered small diameter bore section at one end thereof. A mold cavity is defined by lower and upper mold halves and has a cavity axis, and a core pin having a precisely centered needle-like tip section at the upper end extends upwardly from the lower mold half coaxially through the mold cavity. Its needle-like tip section extends into a precisely centered small diameter bore of a nose piece at the upper end of the mold cavity when the mold halves are closed. The nose piece can be adjusted vertically within the upper mold half to vary the distance the core pin tip extends thereinto to vary the length of the forward end of the molded article.

Abstract: A method is disclosed for assembling a high-performance low-torque anti-friction bearing assembly having numerous applications including dynamic support of a stabilized platform under severe operating conditions. The assembly consists of two rings provided with two pairs of raceways having respective rows of balls therebetween preferably under static preload. The balls and their raceways have a conformity factor of approximately 0.56 to 0.60 and the two rows of balls are in contact with a respective pair of raceways at converging similar contact angles of about 35 degrees. The ratio of the ball path diameter and the square root of the cross-sectional area of the bearing is at least 15. A bearing incorporating these features performs at high efficiency with minimal torque losses under both simultaneous and non-simultaneous axial, radial and moment load conditions and associated distortions.

Abstract: An apparatus for use in determining the location of a surface of a solid object such as that being machined by a machine tool includes a stylus having an electrically conductive end that is supported by two support members, which are disposed in pressure contact with each other by means of a spring or other bias, one of the two support members being formed to have a spherical contact surface that is a portion of an imaginary sphere concentric with the contact electrode, the other of the two support members being formed so that upon contacting the spherical surface the area of contact is substantially line contact.

Abstract: An adjustable RCC device having an adjustable remote center of compliance including: a support member; an operator member interconnected with the support member; a mounting member spaced from the support member; a plurality of radial members extending between and attached to the support member and the mounting member and having a focus at, near or beyond the free end of the operator member; and either means for adjusting radial member geometry or means for adjusting radial member stiffness or means for adjusting stiffness of a deformable portion of the support member or operator member or any combination thereof.

Abstract: The present invention discloses methods and apparatus for rethreading damaged or incorrectly threaded tubular members such as tool joints, casing, and tubing for oil wells, which methods and apparatus are particularly advantageous for use with NC and CNC machines.

Abstract: An electronic edge and center locator is a device for setting up a machine tool so that a tool holding chuck is aligned with a workpiece to be machined. The electronic edge and center locator has a metal probe for contacting a workpiece and the probe has an insulated shank for mounting in the chuck of a machine tool. The electronic edge and center locator includes electronic circuitry for detecting when the probe makes electrical contact with the workpiece. The circuitry provides visual indication of normal probe operation and indication when contact between the probe and the workpiece is detected. Mounting of the probe in the chuck of the machine tool provides a highly accurate method of precisely determining the spatial relationship between a workpiece and the machine tool.

Abstract: Apparatus holds in alignment a stack of a plurality of loose laminations so that clamp bolt holes therein are held in an accurately aligned condition while the stack is compressed (in the vicinity of the bolt holes) between pads that simulate mounting pads in a compressor, and a means for applying a force localized in the bolt hole regions. The compressive forces simulate and closely approximate the compressive forces that ultimately will be applied to the bolt hole regions under the heads of mounting bolts in a compressor. Various eccentricities and dimensional variations between the bore and bolt holes are transferred to the bore, and while the stack is held with the preselected compressive forces, the bore is shaped with a roller burnisher so that it will be concentric relative to the bolt holes.

Abstract: The device includes an alignment station at which an operator can align a wafer under a microscope. Once the wafer is properly aligned, a transfer chuck is brought into position above the wafer and aligned with alignment pins located in fixed positions at the alignment station. The wafer is then fixed to the transfer chuck and released from the alignment station. The transfer chuck is moved into proper alignment with alignment pins at a remote operation station, such as an automatic scribing station. The invention allows the operator to view the wafer with semiconductor devices facing the operator and provides for flipping the wafer over through the use of the transfer chuck so that the laser scriber can scribe the wafer on the side away from the semiconductor devices.

Abstract: An electrical outlet box having a center threaded post is fastened solidly to a wall stud at a prescribed elevation above floor level. A section of dry wall is brought into position and a dry wall penetrating means temporarily telescoped with said post is employed to produce a locator opening through the dry wall section coaxially with the outlet box. A cutter means centered on the locator opening is employed to remove a plug of dry wall to thereby form a dry wall opening in registration with the mouth of the outlet box. The dry wall penetrating means is separated from the outlet box post and a unit for switches and/or receptacles including a cover plate is introduced through the dry wall opening into the mouth of the outlet box and secured by engagement of a single center screw fastener with the threaded post.

Abstract: A method of repairing the teeth of a dredge cutterhead wherein at least two position openings are provided on the head for each tooth for receipt of a locating fixture for properly positioning a replacement tooth part.

Abstract: A method of manufacturing brake drums or the like and apparatus therefor that minimizes scrap rates by improving as-manufactured balance. In accordance with the disclosed method, the casting rim of the brake drum is located in a press by centering the drum relative to its outer surface. Locating holes are then accurately formed in the drum center by the press prior to machining of the drum inner surface. The subsequent machining operation on the drum inner surface is accomplished by locating the drum accurately via the locating holes formed in the press operation.