Abstract: A method for making a decorative metal sheet through means of a coiled strip blasting line. Coiled metal strip is unwound, passed through a blast room, and rewound at the exit end of the line. In the blast room section, a mixture of recycled blasting media is combined with fresh material to create a controlled, steady-state blast media mixture that is projected, by a bank of air pressure nozzles onto the surface of the strip to create the desired decorative effect.

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 method and apparatus for machining workpieces with rotationally symmetrical surfaces, for example crankshafts, by which the setting and idle times are minimised, transposition of the workpiece to another machine is avoided, and both large batch sizes and also small numbers of items are economically machined. Machining of the workpiece is effected both by a method in which the machining speed is produced primarily by the rotation of the workpiece, and also by a method in which the machining speed is achieved primarily by the rotation of the tool.

Abstract: The present invention relates to a method of producing a surgical saw blade comprising a clamping portion and a working area provided with a toothing, wherein the clamping portion and the working area are produced by means of an etching method and the toothing is subsequently cut by means of a laser type cutting method.

Abstract: A method for making a through opening in a high-pressure fuel reservoir that has an elongated, tubular jacket body, which body is provided in the longitudinal direction with a continuous recess, open on at least one end, that forms the interior of the high-pressure fuel reservoir, and the through opening is made in the jacket body in the form of a bore by a machining tool in such a way that this opening discharges into the continuous recess. In order to avoid burrs, before the through opening is made, a pressure part is pressed against the inner wall of the jacket body in the region of the expected outlet of the through opening, and with the machine an tool, drilling is done through the jacket body some distance into the pressure part.

Abstract: A process for the manufacturing of longitudinal profiles such and tongue and groove on boards wherein the process includes the steps; a) Moulding a substantial part of the profile cross-section by means of milling with a milling tool. b) Fine moulding undercuts in at least the groove of the board by means of broaching utilising at least one broaching tool.

Abstract: An inner cutter for a dry shaver is fabricated from a metal plate to have a plurality of blades each provided with cutting edges. The metal plate includes a plurality of parallel straight slits to leave an array of straight beams each defined between the adjacent ones of the slits. The beams are forged and ground at a segment of each beam to give the cutting edges thereto. After making the cutting edges, the metal plate is bent into a generally U-shaped configuration so as to correspondingly curve the beams and shape the beams into the blades having the arcuate contour and the cutting edges. The metal plate is provided with a joint for connection with a driving source of moving the inner cutter relative to an outer cutter.

Abstract: A method of machining a plurality of circumferentially spaced bores in an object, each of the bores extending generally tangentially and inwardly and being positioned in the object so as to generally asymmetrically intersect two adjacent bores, comprises the steps of: providing an object; determining a plurality of bore positions generally around a circumference of the object; machining a first bore and performing at least one subsequent machining operation on the first bore to substantially complete the first bore; machining a second bore immediately adjacent to the completed first bore, wherein the second bore is machined so as to intersect the completed first bore, and performing at least one subsequent machining operation on the second bore to substantially complete the second bore; sequentially machining a remaining plurality of bores except a final bore, wherein each said bore is machined so as to intersect an immediately adjacent completed bore; and machining the final bore immediately intermediate the

Abstract: The invention relates to a method for finishing the ball star of a homocinetic joint, especially for automobiles. The ball star has a ball ring-shaped bearing surface for mounting in a ball cage, and has a plurality of essentially axial running guideways provided for the balls. Said balls are arranged in the ball recesses of the ball cage and transmit torque between the ball cup and the ball star. In order to be able to finish such ball stars quickly, economically and as fully automatic as possible, the invention provides that both the ring-shaped bearing surface provided for mounting in the ball cage as well as guideways provided for the balls are produced by a hard-rotary turning operation.

Abstract: A method for forming a cavity structure provided with a thin bottom plate is comprises the following steps. The first step is to deform plastically a part of a metal plate so as to form a cavity on one surface of a metal plate wherein the cavity has an oddly bottom surface provided with subsections being different from each other in depth. Simultaneously a protrusion is formed on the other surface of the metal plate by shifting an amount of metal corresponding to the cavity into the protrusion wherein the protrusion has substantially similar figure to the cavity. Then a coupling section, which keeps the protrusion integral with the metal plate, is formed so as to make the protrusion smaller than the cavity. And the protrusion is removed from the metal plate so as to make the other surface of the metal plate flat and to form the bottom plate of the cavity thin while remaining the coupling section.

Abstract: An ultrasonic surgical apparatus for fragmenting and aspirating tissue is disclosed. The apparatus includes a handpiece which encloses a transducer, an aspirating tool, and a connector body connecting the aspirating tool and the transducer. The aspirating tool includes a elongated boy having a centrally located throughbore, a hexagon engagement portion, a threaded proximal end and a distal tip. Methods of manufacturing aspirating tools having small and large diameter throughbores adapted for use with a common handpiece are also disclosed.

Abstract: A milling machine includes a bi-directional, variable speed, rotary workpiece-holding table, a table drive sized to achieve relatively high acceleration and deceleration rates, a cutting tool mounted to a single or dual axis head, and a control system adapted to achieve a high degree of tool position and table rotational position accuracy cooperating to permit high-speed machining operations, including substantially dome-shaped parts characterized by circumferential surface portions interruped by radial wall portions. A dual table drive and interchangeable head arrangement make the machine also suitable for conventional turret lathe operations.

Abstract: In a method of fabricating a variator disc, an outer periphery (5) of the input disc (D1), with a spline hole (4) thereof meshed with an input shaft (6), is finished using the input shaft (6) as a working reference. Subsequently, a race (2) is finished with high precisions using the outer periphery (5) as a working reference. There is an alternative method wherein a spline hole (4) with a machining allowance is precisely formed by means of a broach (X) prior to the heat treatment of a blank (B); after hardening the blank (B) by the heat treatment, tooth flanks (4a) of the spline hole (4) are precisely finished by means of a finishing broach (Y); and then, a race (2) of an input disc (D1) is precisely finished using the tooth flanks (4a) as a working reference.

Abstract: 9 In accordance with certain aspects of the invention, an exemplary claim can define the steps of providing a rotating mount for the initially cast prosthesis in association with a numerically or computer controlled grinding machine. The grinding wheel is rotatably supported so that the wheel can translate vertically and axially relative to the axis of the workpiece, and can pivot in a plane generally parallel to the axis of the workpiece. In one step, the stem of the workpiece is rotated as the grinding wheel is held in position substantially perpendicular to the axis of the stem. The grinding wheel is then retracted and repositioned along the length of the stem through a series of successive positions. At each position, the grinding wheel is rotated in contact with the rotating workpiece. Once the grinding wheel is positioned at the transition region, the workpiece is preferably rotated through 180° on both sides of the transition region.

Abstract: A cutting tool includes a holder and at lest two first cutting inserts. The holder has a number of insert pockets in order to receive those cutting inserts. The cutting inserts are mounted in the holder such that their radially outermost portions lie substantially in an imaginary circle. The circle constitutes an effective diameter of the cutting tool. The cutting tool, in addition, includes at least one second cutting insert provided for a machining operation different from that of the first cutting inserts. The second cutting insert is spaced radially inwardly from the circle.

Abstract: A method for making a hollow crank includes a three-direction forging step to forge a piece to have a recess in a first end of the prototype; a step of forming a hollow first end of the prototype by forcing the first end through a cone-shaped passage in a mold; a step of forming the first end of the prototype to have an angle relative to the second end of the prototype; a step of setting the first end of the prototype in a cold-forging mold to set the shape of the prototype.

Abstract: A tube and method of making the same for a heat exchanger includes a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base and the top along another side thereof. The tube includes an end form formed solely on either one of the first side and the second side to create a stop for inserting said tube into a manifold of the heat exchanger.

Abstract: The invention relates to a method for the production of a tool, in particular a drill (6) or milling cutter, having at least one conveying helix (8a, 8b), proceeding from a bar-shaped blank (1). In this case, there is provision for introducing the conveying helix (8a, 8b) in a single operation by means of a machine tool, the blank (1) having a diameter (DR) which is larger than a diameter (dF) of the conveying helix (8a, 8b).

Abstract: An apparatus and method of utilization thereof is provided for machining pistons of reciprocating piston internal combustion engines. The piston is held in a work station by its interior cavity and the oil rings, oval side surface and hinge pin bore are machined on the piston without any refixturing of the piston required.

Abstract: A process for the manufacturing of longitudinal profiles such and tongue and groove on boards wherein the process includes the steps;

Abstract: A method for manufacturing a pipe connector for a gas isolated switchgear has the steps of preparing a material block, a first forging process, a second forging process to form the material block to an I-shaped member, defining a passage through the I-shaped member, stretching the I-shaped member, a first heat treatment process (T4 process), straightening the I-shaped member to a desired length and a second heat treatment process (T6 process). With such a method, the processes for manufacturing the pipe connector are simple, and the cost for manufacturing the pipe connector is low.

Abstract: In a method for stocking tool magazines of a device for machining workpieces, the device having at least a first spindle and a second spindle configured to be independently movable relative to one another at least in one axis, wherein the first and second spindles have correlated therewith at least a first tool magazine and a second tool magazine, respectively, workpiece machining is continued by the second spindle during stocking of the first tool magazine, and workpiece machining is continued by the first spindle during stocking of the second tool magazine. Alternatively, stocking the first and second tool magazines can be carried out simultaneously.

Abstract: A ring for a laminated type metal belt includes: an endless metal ring for configuring a belt by laminating a plurality of the rings. In the structure, the ring is chamfered at each of its inner and outer peripheral corner edges; and the radius of curvature of the chamfered portion of the inner peripheral corner edge of the ring is set to be larger than the radius of curvature of the chamfered portion of the outer peripheral corner edge of the ring.

Abstract: A method is provided for producing a cylinder in a two-cycle engine. The cylinder bore is first machined as a preparation for the provision of a coating. The thereby resulting window edges that surround an inlet window are then at least partially chamfered. The cylinder bore is consequently provided with the coating, which at least partially overlaps the chamfered window edge. There thereby results in the region of the window edge a location of least spacing relative to the axis of the transfer channel. The piston liner or gliding surface is finally machined to a finished dimension such that in the region of the chamfered and coated window edge or corner there is formed a coating edge having a wall spacing relative to the location of least spacing, which such wall spacing having a maximum value of 0.7 mm.

Abstract: A method of machining a part including clamping the part on a chuck, while the part is clamped on the chuck, orienting the part with an OD-type grinding tool and grinding a ball track on the part, and while the part is still clamped on the chuck, orienting the part with a cutting tool and cutting an outer surface of the part.

Abstract: A method for finishing a valve seat for ball valves, in particular for fuel injection valves in internal combustion engines. The workpiece to be finished and a finishing tool are driven in an opposite direction of rotation, whereby the axes of rotation of the workpiece and the finishing tool are aligned with each other at an angle of from 1° to 10°. The finishing tool rests against the inside surface of the workpiece to be finished over its entire circumference. The surface of the workpiece to be treated is provided with a crowned shape. A finishing stone with a wear-resistant and preferably cone-shaped working surface is employed as the finishing tool, whereby a narrow sealing zone with a convex contour in the longitudinal section is produced in the crowned surface of the workpiece by partial removal of material.

Abstract: Disclosed is a method for forming a micro groove on a PDP mold by preparing the PDP mold using a steel-based mold and rotating a CBN metal bond blade at a high speed to form the micro groove on a surface of the PDP mold at multiple steps, thereby increasing a precision thereof and reducing a manufacturing cost.

Abstract: In a method of fabricating a variator disc, an outer periphery (5) of the input disc (D1), with a spline hole (4) thereof meshed with an input shaft (6), is finished using the input shaft (6) as a working reference. Subsequently, a race (2) is finished with high precisions using the outer periphery (5) as a working reference. There is an alternative method wherein a spline hole (4) with a machining allowance is precisely formed by means of a broach (X) prior to the heat treatment of a blank (B); after hardening the blank (B) by the heat treatment, tooth flanks (4a) of the spline hole (4) are precisely finished by means of a finishing broach (Y); and then, a race (2) of an input disc (D1) is precisely finished using the tooth flanks (4a) as a working reference.

Abstract: A method of reducing hard machining time, and correspondingly increasing hard machining tooling life, of a non plunging type constant velocity joint for use in reduced angle applications. The method comprises forming a recess having a larger formed radius in a portion of the ball track and cage track areas that is non-functional in low angle operations prior to heat treat hardening. The new process results in a significant reduction of approximately forty-five percent in the hard machining of the ball and cage track surfaces.

Abstract: A workpiece is assembled by removably mounting an alignment tool to a conventional wing structure so that the alignment tool holds multiple conventional strut fittings to the wing structure. A frame of a CNC manufacturing machine is moved to and removably mounted to the workpiece. The orientation of the workpiece with respect to the frame mounted thereto is quantified. A predetermined pattern of operations to be performed by the CNC manufacturing machine to form attachment holes for use in attaching the strut fittings to the wing structure is adjusted to compensate for the orientation of the workpiece relative to the frame. Thereafter, the CNC manufacturing machine automatically forms the attachment holes.

Abstract: A technique for fabricating datum surfaces on a print cartridge body. One technique includes fixing the print cartridge in a tooling fixture after the printhead has been affixed to the body, performing a position measurement on the fixed print cartridge to obtain position measurement data, and using the position measurement data, machining precisely located datum surfaces.

Abstract: In a method of producing a piston (10) for an internal combustion engine including at least one strengthened piston ring groove at least one relatively narrow groove (14) is configured in the region of the upper and/or lower flank of the provided piston ring groove (18) and the groove (14) is filled with a hard-wearing material (16) and the piston ring groove (18) is worked out such that the upper and/or lower flank is formed at least in part by the hard-wearing material (16).

Abstract: A method of repairing a gas turbine engine compressor blade airfoils includes machining away airfoil material along leading and trailing edges and a radially outer tip of the airfoil to form leading edge, trailing edge, and tip cut-backs. Then beads of welding material are welded onto the leading edge, trailing edge, and tip cut-backs. Then some of the weld material is machined away from the weld bead to obtain desired finished dimensions of the leading and trailing edges and radially outer tip. Blade material along only radially outermost portions of the leading and trailing edges extending from the tip towards a base of the airfoil is machined away. A rounded corner is formed between the leading edge and trailing edge cut-backs and unmachined portions of the airfoil between the outermost portions of the leading and trailing edges and the base of the airfoil.

Abstract: An injection mould which comprises at least five modules aligned with each other. The five modules correspond to a first mould module and a second mould module to form a product cavity, a drive module for driving of sliders, an engaging module adapted, by application of a force, to prevent dividing between the first and the second mould module when introducing product material into the product cavity, and an ejector module for ejecting a completed product from one of the first and the second mould module.

Abstract: There is disclosed a plastic processing method for easily shaping a tip end of a metal rod material such that a sectional area of the tip end gradually decreases. A metal rod material 3 is contained in a molding groove 2 which is disposed in a mold 1 and whose end 2a has a sectional area smaller than that of the metal rod material 3. Then, a rolling roller 4 is rolled in contact with a mold surface 1a, and the rod material 3 is plastically deformed and molded along a shape of the molding groove 2. Subsequently, a burr 3b is removed. The molding groove 2 has a sectional area smaller than that of the metal rod material 3 on a tip end 2a side, and in addition has a width and depth larger in size than a diameter of the rod material 3 on a rear end 2b side, while having a gradually decreasing sectional area on the tip end 2a side. A rolling roller 14 rotates together with large-diameter rollers 15a, 15b, and is pressed in contact with the mold surface 1a by the rollers 15a, 15b.

Abstract: A method of accurately and consistently machining opposite sides of a plastic soft foam block to form a core of an automotive seat includes the step of routing a contour recessed into one side of the block, filling a cavity formed during the routing with a granular material, preferably material generated by the routing process, retaining the material with a covering as the block is inverted, and routing a second contour into the opposite side.

Abstract: A silicon carbide rail for use as a support in an apparatus for holding semiconductor wafers is made by forming a first series of parallel slots or grooves into the front side of a graphite plate usually without piercing the back side of the plate, converting the slotted graphite plate into a slotted silicon carbide plate, and forming a second series of parallel slots into the back side of the slotted silicon carbide plate such that each slot on the back side connects with a corresponding slot on the front side. The width of each back side slot is less than that of the corresponding front side slot, thereby forming rail teeth having a ledge running along their to top surfaces.

Abstract: A gear reducer housing includes rotating assembly supports in a housing shell, and fixturing pads disposed about the periphery of the housing shell. The fixturing supports are formed in the casting blank from which the housing shell is machined. The pads permit the shell blank to be fixtured once for machining of various features of the final shell. The pads may be formed in a peripheral flange and the flange may be machined around the pads to form a sealing surface. Apertures may be provided in the flange to facilitate assembly of the gear reducer. The apertures and fixturing pads may be provided in mirror image locations about a centerline of the housing. The apertures may be slotted, with major axes of mirror image-located apertures having transverse major axes, such that inherent tolerance is provided for positioning fasteners used to assemble the product.

Abstract: A method of forming patterns, trademarks and balance weight in a golf club head includes fabricating a rough working piece of the club head which has a trough located at a lower portion and reverse recesses for selected patterns and trademarks located at an upper portion thereof. Then fill and stuff the trough and recesses with a metallic material different from the club head that has a lower melting point (such as copper powder). Thereafter the stuffed recesses and trough and rough working piece of the club head are heated until the stuffed metallic material melted to form a strong binding with the rough working piece. Then grinding the rear side of the stuffed patterns and trademarks to expose the patterns and trademarks. The stuffed material in the trough becomes a balance weight. Finally to engage a hitting plate with a front circumferential edge of the trough to form a finished club head.

Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.

Abstract: A manufacturing method for a golfing iron club and an iron golf club manufactured by the method. A shaft is connected to a head 1 having a face 3 on a front and a shaft attachment portion on one side. After a pre-forging stage using an upper die and a lower die, a rear region corresponding section 9′A and a lower peripheral face corresponding section 11A are machined with an end mill A. Then post-forging is performed using an upper die and a lower die to form the head 1. Thereafter, post-machining is performed using an end mill B. Thus, a rear region 9A and a lower peripheral face 11 can be formed without forging. Machining can be carried out between the pre-forging and post-forging stages, so that locations which are difficult to forge can be accurately formed. In addition, the head 1 is able to be formed more freely, owing to a post-machining stage.

Abstract: A climbing nut is generally trapezoidal and has planar upper and lower faces and paired adjacent faces that are convex and concave, respectively. Opposed faces of the nut are therefore convex and concave, respectively. The convex faces have lateral longitudinally extending leg segments that assist in triangulation and strengthen the nut. The geometry of the faces allows for greater placement options. The nut alternately has one or more asymmetric curved faces. The nut is milled from stock extrusion material.

Abstract: A method for repairing a turbine blade having a crack in a trailing edge portion of the blade includes the steps of cutting back a first surface of the turbine blade adjacent the blade trailing edge portion where the crack is located, and cutting back a second surface of the turbine blade adjacent the blade trailing edge portion where the crack is located. Each cut back step comprises cutting back the respective surface by a depth greater than the length of the crack and less than the trailing edge radius to remove the crack and form a cut back trailing edge portion. A compound radius is used to prevent a blunt transition into the trailing edge that would result in aerodynamic losses and to reduce the airfoil root stresses. The method also includes applying a thermal barrier coating to the turbine blade to increase service life. Prior to applying the coating, the tip portion of the turbine blade is modified to account for the change in the thermal characteristics of the turbine blade.

Abstract: A method of providing an internal circumferential shoulder in a cylindrical passageway including the steps of forming an enlarged internal diameter groove in the passageway, machining an integral unitary circumferential shoulder blank of external dimensions conforming to the groove, cutting the shoulder blank into at least segments, each segment having opposed end surfaces that match the end surfaces of adjacent segments, the opposed end surfaces of one segment being defined by parallel, spaced-apart planes forming a key segment, positioning the shoulder segments into the groove, the key segment being inserted last and securing the key segment within the groove.

Abstract: The invention relates to a process for producing a cooling channel piston, in which the overall height is reduced in that the annular recess has a lower height than the height of the tool used for producing the cooling channel, and the production of the cooling channels starts parallel to the piston boss face, in which the axial height of the annular recess (8) is smaller than the axial height of the cooling channel (13).

Abstract: A multi-valve internal combustion engine having a plurality of valves having skewed axes that are operated by cam lobes of a single cam shaft. The cam shaft operates the valves through rocker arms each of which are pivoted independently about axes that are skewed relative to the cam shaft axis so as to minimize bending stresses on the valve during its actuation. This also avoids scuffing between the rocker and the valve stem. At the same time, good contact is maintained between the cam lobe and the follower surface by machining the cam lobe so that it will have a slight concavity at least in its tip portion so as to ensure constant line contact with the follower.

Abstract: A technique for fabricating datum surfaces on a print cartridge body. One technique includes fixing the print cartridge in a tooling fixture after the printhead has been affixed to the body, performing a position measurement on the fixed print cartridge to obtain position measurement data, and using the position measurement data, machining precisely located datum surfaces.

Abstract: A loading cam mechanism of a toroidal type continuously variable transmission is provided with a cam disc that rotates together with an input shaft. A cam surface is formed on the cam disc. The cam disc includes a disc portion having the cam surface formed thereon and a cylindrical portion protruding from the central portion of the cam surface. The cam disc further includes a lathe-turned portion formed by lathe turning, a milled surface formed by means of an end mill, and a ground surface formed by means of a grindstone. Formed on a corner portion between the cylindrical portion and the disc portion are a first corner curved surface worked by means of an arcuate portion on the distal end portion of the end mill and a second corner curved surface worked by means of an arcuate portion on the distal end portion of the grindstone.

Abstract: A method for manufacturing pipe joints for connecting two pipe sections in a well bore allows the pipe joint to have increased resistance to compressive and torsional forces. Each pipe joint has a box member for matingly engaging a pin member, the pin member being threadingly connected to the box member to create the pipe joint. Threads are created for the pin member on a tapered exterior surface of a pipe, the threads being axially disposed between a pin end terminal surface and an external shoulder. A tapered surface having a recess is created for the box member on an interior of a pipe, the tapered surface being axially located between a box end terminal surface of the pipe and an internal shoulder, the recess being axially located just behind the box end terminal surface of the pipe. Threads are cut into the tapered surface of the box member, the threads beginning behind the recess and traveling axially away from the box end terminal surface.

Abstract: A collet for carrying a high-speed drill which comprises a collar (2) arranged to enclose a drill shank (1), an outer rim support (8) arranged for attachment to a drill, and a clamping mechanism between the collar and the outer rim support (8). The clamping mechanism is arranged to provide clamping forces between said outer rim support (8) and said collar so that said collar tightly grips a drill shank (1), as a consequence of centrifugal forces and of off center sprag effect forces.