Abstract: A control device for a machine tool for machining a workpiece while orbital movement is performed for causing an auto-rotating rotary tool to move in a circular manner, the control device comprising: a reading and interpreting unit for reading a machining program containing input information; and a computing unit for combining a first tool pathway along which a rotary tool travels and which has been set on the basis of input information about the travel of the rotary tool, and a second tool pathway along which the rotary tool orbits and which has been set on the basis of input information about the orbital movement, and for setting a third tool pathway along which the rotary tool travels in a machining shape while moving in an orbital manner.

Abstract: Gear processing machine (4), such as a gear cutting or grinding machine, wherein a chamfering and/or deburring apparatus (2) and auxiliary spindle (10) are included on the same machine. A transfer mechanism (8) loads, unloads and transfers workpieces between a machining spindle (6) and the auxiliary spindle (10) thereby enabling simultaneous cutting and chamfering and/or deburring processes to be carried out. Via the auxiliary spindle, completed workpieces may be removed from the machine and blank workpieces may be loaded into the machine while another gear is being processed on the machine spindle thereby enhancing machine output and creating a more efficient operation.

Abstract: A machining device for a workpiece wherein a first feed axis extends through a workpiece holder, a first machining tool is disposed on a first side of the feed axis, and a second machining tool is disposed on a side of the feed axis opposing the first side. Between a first feed axis and perpendicular to a second feed axis, at least one machining tools has a predetermined fixed angular offset.

Abstract: A machining center wherein improved workability of a control board, a widened movable zone of a column and a reduced installation space are achieved. The machining center includes a column movably supported on a column sliding portion in an X-axis direction, a work table movably supported on a table sliding portion in a Z-axis direction, a main spindle head slidably supported on the column in a Y-axis direction, and an automatic tool changer disposed at an inner side of the column sliding portion. The control board is arranged at an opposite side of the automatic tool changer and is provided in parallel with a side surface of a front portion of a table sliding portion and is arranged side by side with an openable/closable door for an operator provided on a side surface of a cover in a vicinity of a rear end portion of the side surface of the table sliding portion.

Abstract: A moving beam type machine tool is disclosed, having a dynamic phase balancing weight set and a spindle saddle. The spindle saddle has at least one X-axis location feedback device. When the spindle saddle along the X-axis traverse, the at least one X-axis location feedback device is able to locate the spindle saddle and inform a controlling unit. The controlling unit changes the output pressure of the dynamic phase balancing weight set depending on the location of the spindle saddle, so that a crossbeam is able to maintain in a balancing state. The moving beam type machine tool is able to increase accurate, sensitivity of pressure response, withstanding weight and balancing state.

Abstract: A collecting chamber of a flow machine which expands in the direction of circumference, including at least one outer shell part and a contour insert is provided. The contour insert is provided with a groove which extends in the circumferential direction and is preferably configured as a helical spiral. The contour insert, is cut from a whole unit and is delimited at one end in the circumferential direction by a bent edge so that the flow losses are minimized during the passage from the collecting chamber into a subsequent diffuser.

Abstract: The invention relates to a method of machining the bearing seats of main and rod bearings (HL, PL) of crankshafts (1), in which the bearing seats (30) of the main and rod bearings (HL, PL), after the primary forming of the crankshaft (1) by forging or casting, are subjected to the following processing operations: forming by machining with a specific cutting edge, deep rolling all fillets or recesses of the main and rod bearings, straightening of the crankshaft (1), precision machining with an end-milling cutter (12) in each case by high-speed roughing-cut turn-milling and finishing-cut turn-milling, smooth rolling of the bearing seats of the crankshaft after the finishing-cut turn milling, wherein the roughing-cut turn-milling and the finishing-cut turn-milling is effected during in each case an essentially complete revolution of the crankshaft (1) without longitudinal feed and without tangential feed of the end-milling cutter (12).

Abstract: A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %.

Abstract: Disclosed is a method for machining the bearing seats (HL, PL) of shafts (1), especially crankshafts. According to said method, the bearing seats (HL, PL) are subjected to the following machining operations after initially shaping a shaft (1) in a forging or casting process: the bearing seats (HL, PL) are preformed by cutting the same using a specific cutting edge; they are hardened; they are passed through dressing rollers; they are subjected to a preliminary rotary milling process; and they are subjected to a final rotary milling process. The preliminary and the final rotary milling process are carried out during substantially an entire rotation of the shaft (1) without longitudinally or tangentially advancing the milling cutter (12).

Abstract: A machining apparatus, in which a plurality of user set programs in relation to one axis is written and the amount of the infeed motion of the grinding wheel is increased to restrain the change of the load of the grinding wheel, improves a machining accuracy and achieve a longer life of the grinding wheel.

Abstract: A method for machining particularly spectacle lenses by means of a machine which comprises at least one cutting unit and at least one turning unit in a common working space, wherein at least two spectacle lenses are machined at the same time in the working space, one of said spectacle lenses being cut while the other is turned. The machine frames of the cutting unit and of the turning unit are essentially decoupled from one another in terms of vibration and/or at least two machining units of the machine comprise workpiece spindle units for generating a transverse movement of the spectacle lens to be machined with respect to the respective tool, the workpiece spindle units being arranged essentially perpendicular to one another. As a result, it is possible for spectacle lenses to be machined in an extremely short time with high machining performance and with high surface precision and quality.

Abstract: While having a milling cutter, equipped with a rotary shaft and a blade portion projecting in the direction intersecting with the axial line direction of the rotary shaft, rotated about the axial line of said rotary shaft, the milling cutter and the base material for forming an optical device are relatively moved in the cutting-in direction and the feed direction to form machining faces that constitute the device face. At the boundary part of the machining faces, the rotary shaft is directed in the direction orthogonal to the boundary part to cut the lower machining face of two adjacent machining faces. The objective is to provide a method for manufacturing an optical device in which a step can be formed at the boundary part between two adjacent machining faces when manufacturing an optical device or a mold by cutting, and to provide an optical device.

Abstract: A machine for machining workpieces has at least one milling tool with an internal cutter. The machine is provided with a first guide system and a second guide system parallel to the first guide system. The first guide system has at least one compound slide having a slide part, wherein the at least one compound slide is moveable in a longitudinal direction of the first guide system and wherein the slide part is moveable transversely to the longitudinal direction. A milling tool is secured on the slide part. The first and second guide systems have sliding guides or roller bearing guides. The at least one compound slide has a transverse guide system and the slide part is guided on the transverse guide system.

Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction, movement of the turn table in a Y-axis direction, and movement of a spindle in a Z-axis direction, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining center in the X-axis direction shorter.

Abstract: A milling machine for shaping blanks to create filter lenses for a clip-on accessory whose pair of filter lenses register with a pair of optical lenses in prescription eyeglasses when the accessory is hitched onto the frame of the eyeglasses. The frame of the eyeglasses is composed of two like half sections having a predetermined geometry, an optical lens being mounted in each half-section. The filter lenses in the accessory which are joined by a bridge piece have a geometry matching that of the half-sections of the frame whereby the appearance of the clip-on accessory is compatible with that of the eyeglasses.

Abstract: Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction and movement of a spindle on a Y-Z plane, so that a width of a main unit in a X-axis direction can be made shorter in comparison with machining by moving the turn table in the X-axis direction. Besides, the turn table located on a front side of the main unit, an ATC located on the rear side thereof, and a separated control panel located on the rear side of the ATC, independent from the main unit can also make the width of a machining centre in the X-axis direction shorter.

Abstract: A machine for making a plurality of electrodes projecting from the front surface of a plate-like workpiece uniform in height, comprising a chuck table having a placing surface for placing the plate-like workpiece, which can be moved between a workpiece take-in/take-out area and a processing area, a chuck table moving unit for moving the chuck table between the workpiece take-in/take-out area and the processing area, a cutting unit having a cutting tool for cutting a plurality of electrodes projecting from the front surface of the plate-like workpiece arranged in the processing area and held on the chuck table to make them uniform in height, a cutting unit feed mechanism for moving the cutting unit in a direction perpendicular to the placing surface of the chuck table, a take-in means for carrying the plate-like workpiece before processing to the chuck table positioned in the workpiece take-in/take-out area; and a take-out means for taking out the plate-like workpiece after processing held on the chuck table p

Abstract: A milling and drilling machine for rod-shaped material. A motor-driven spindle head is movable on a column along a first coordinate axis and includes a work spindle capable of selectively accommodating milling and turning tools. A separating device transversely separates the rod-shaped material. A clamping device, disposed laterally alongside the workspace, has a workpiece holder with a clamping axis along a horizontal coordinate axis. A rotary drive is provided for the workpiece holder. The spindle head is pivotable about a Y axis at the front side of a headstock movable in the direction of the Y coordinate axis. The headstock is disposed on a motor-driven slide movable on the stationary column along an X coordinate axis parallel to the workpiece clamping axis. The clamping device is disposed on an inclined console located on the face of the column and movable along the Z coordinate axis in guides.

Abstract: A process for edge-machining an optical (spectacle) lens including preliminary machining of an edge of the lens rotatable in controlled manner about a rotational axis of a workpiece by a first edge-machining tool adjustable radially relative to the rotational axis of the workpiece, whereby the lens is given a circumferential contour which corresponds to the circumferential contour of a lens holder apart from a slight degree of oversizing, contactless measurement of the preliminarily machined lens edge, and finish-machining of the lens edge, taking account of the detected edge data of the preliminarily machined lens, by means of a second edge-machining tool adjustable radially relative to the rotational axis of the workpiece, whereby the lens is provided with a circumferential contour substantially complementary to the circumferential contour of the lens holder.

Abstract: The invention concerns a 3D milling machine and a 3D milling process. The milling machine comprises a milling unit (2) with a motor driven work spindle (4) for receiving a milling tool, a work table for clamping work pieces, guide and drive device for producing relative movement of the milling unit and the work table in at least three spatial directions, and a laser device (12) for emitting a laser beam. A laser assisted milling of free-form surfaces is made possible in that the milling unit is a spherical cutter (6), further, that a mounting device (30, 32) and a driving device (36, 38) are provided for producing a precise movement of the laser emitter (12) about a point on the beam axis, such that the laser beam (14) circles about a central axis, which intersects the axis of the work spindle (4) at an acute angle, as well as a mounting device and a driving device for at least one of pivoting and rotating of the work table (18) about at least one axis.

Abstract: A device for machining a solid carbide bar, which comprises means suitable to support the bar and turn the bar during machining, and a wheel for cutting the bar, which is supported by means suitable to move the wheel toward and away from the bar.

Abstract: Devices adapted to position exactly a workpiece and a machine tool for machining the workpiece to create a shaped article that conforms to a specification therefor. The device for positioning the workpiece includes a rotary table in which the workpiece is held so that it can be machined in the round by the tool. The table is turned by a slider that is driven by a stepping motor and is reciprocated by a pair of drums which are linked by flexible metal bands to opposite ends of the slider. When the motor causes the drums to rotate clockwise, the slider is then pulled in one direction by the bands, and when the drums are caused to rotate counterclockwise, the slider then advances in a reverse direction. A similar device serves to exactly position the machine tool.

Abstract: In order to improve a machine tool, comprising a machine frame, a support arranged on the machine frame and having a first receiving means for the workpiece or the tool, a compound slide system arranged on the machine frame and having a second receiving means for the tool or the workpiece which can be moved by the compound slide system in a movement zone of a compound slide movement surface, with respect to the characteristics of the compound slide system it is suggested that the compound slide system comprise two slide elements, one of which is supported on the machine frame and the other bears the second receiving means, that the slide elements be guided so as to be movable on one another by a single two-dimensional guide means movable in the direction of both compound slide movement axes, the guide means determining the precision of the guidance of the second receiving means parallel to the compound slide movement surface, and that a drive device be provided, with which the slide element bearing the second

Abstract: A milling cutter is moved relative to a workpiece rotating about a given axis to thereby cut the workpiece into a last. A milling cutter moving apparatus moves the milling cutter in accordance with movement data stored in a memory. The movement data is such that when the milling cutter is moved relative to the rotating workpiece in accordance with the movement data, the cutting edge of the milling cutter, at each of the rotational positions of the workpiece, is at a location where it would contact the surface of the last if the last were rotated about the given axis.

Abstract: The present invention discloses a roll cutter. The roll cutter has a housing. To the housing, there is attached a base, a cutter assembly, and an optional hoist assembly. The hoist assembly is a telescoping tower that allows the user to engage a roll using a hoist. The hoist can then pick up the roll and move it onto the stand. Once on the stand, the cutting assembly having a cutting tower, a cutting arm, and a saw can be placed at the desired level of cut. A saw can then be used to cut away the roll until it is the desired width. A sanding blade can be used to sand the edge of the roll.

Abstract: A spoked wheel rim having a hub defining an axis, a plurality of spokes projecting radially from the hub, and a rim ring attached to outer ends of the spokes is machined by first mounting it in a loading/unloading station into a holder rotatable about a holder axis with the rim axis generally coaxial with the holder axis. Then the holder is orbited by a turntable carrying the holder from the loading/unloading station into a working station angularly offset relative to the loading/unloading station about a turntable axis between the stations. A rotating tool is then displaced by means of a head carried on a hexapod positioner at least over surfaces of the spokes while holding the rim stationary in the working station to machine the surfaces. The rim is then continuously rotated about the holder axis in the working station while engaging a rotating tool carried on the hexapod positioner with an edge of the rim ring to machine the edge.

Abstract: The method for removing used elastomeric covers from rollers is performed by approaching a rotating cutter head having a number of cutting tools mounted on an indexable insert holder from one end of the cover of the rotating roller to close to the roller core, and moving said cutter head along the rotating roller to the other end of the cover, the circumferential velocities of the cutting tools being from 15 to 70 m/s, preferably from 40 to 50 m/s. For elastomers of up to about 90 Shore A, annular cutting tools are used.

Abstract: A shaping tool for the stock-removal machining of wheelsets. The tool contains a shell-end milling cutter comprised of a disc-shaped body with a multiplicity of cutting edges which overlap each other and are disposed spirally staggered on pitch circles on such disc-shaped body.

Abstract: An apparatus for processing the cylindrical shells of drums, which comprises a cradle sized for reception in embracing relation with the shell, the shell having a longitudinal axis, the cradle having support structure to clamp a cylindrical surface of the shell and at lengthwise locations, for supporting the shell; structure operatively coupled to the cradle to effect displacement of the support structure to clamp the shell surface; structure for rotating the cradle about an axis corresponding to the drum shell axis, thereby to rotate the shell about the axis; and tooling facing the shell to engage and process the shell as it rotates.

Abstract: A device (1) for balancing rotors (3) by material removal is disclosed, which comprises a milling tool (18) provided with a first and a second cutting regions (18a, 18B) disposed transversely of each other, to remove material in the presence of feed movements for cutting, directed both radially of a rotor (3) and tangentially of the outer surface (4) of the rotor (3), and comprising support and relative-movement means (2) for positioning and moving the milling tool (18) and rotor (3) relative to each other, which means engages the rotor (3) in a manner adapted to cause rotation of said rotor about its rotation axis (5) even while the milling tool (18) is removing material from the rotor (3).

Abstract: A device for engraving intaglio cylinders and similar printing forms having an engraving tool which, together with a sensing member sensing the surface of the printing form to be engraved, is mounted in a holder movable relative to the surface of the printing form. The sensing member is a distance measuring member which contactlessly measures the distance from the surface of the printing form. On the basis of the distance measured from the distance-measuring member, the holder is adjusted relative to the surface of the printing form by an adjusting element, for maintaining a predetermined tool distance between the engraving tool and the surface to be engraved.

Abstract: The invention discloses a method of machining workpieces such as crankshafts, camshafts or similarly shaped members, having surfaces which are disposed both concentrically and also eccentrically relative to a workpiece axis and which are rotationally symmetrical or approximately rotationally symmetrical. The machining of the concentrically curved surfaces is effected by means of turning, rotational broaching and/or turning-rotational broaching and the machining of the eccentric workpiece surfaces is effected by means of end-milling wherein the axis of rotation of the milling cutter is transverse with respect to the spindle axis 3, and the workpiece is subjected to cutting finishing machining and the clamping means.

Abstract: A processing apparatus with a movable processing tool, which includes a position detecting sensor for detecting a rotary position of a to-be-processed object held by a holding member set to a rotary main shaft, a deflection detecting sensor for detecting an amount of rotational deflection of a processing reference surface of the object, a waveform shaping device for shaping an output signal from the deflection detecting sensor into a waveform approximate to a sine curve, an operational device for operating a positional correction amount for a processing tool at a processing point of the object on a basis of an output signal of the waveform shaping device synchronously with rotation of the rotary main shaft, an output device for outputting the positional correction amount for every rotary position and every processing point based on an output signal from the operational device, a fine adjustment mechanism for minutely driving the processing tool based on an output signal from the output device, and an NC table

Abstract: Wheels of rail vehicles are trued while the wheels are kept rotating about a wheel center of rotation that is continuously corrected to keep the center of rotation in a fixed position in response to eccentricities a wheel may have, especially in its outer circumference. For this purpose, a sensor for each wheel of two wheels forming a set senses a respective excursion of a center of rotation of each wheel being trued in a set to provide respective excursion signals which are supplied to a central processing unit that provides control signals to a power drive for wheel guide rollers which support the wheel set to be trued. The power drive applies wheel position adjusting force components, preferably directed radially relative to the respective wheel rotational axis in response to the control signals from the central processing unit whereby the excursions are compensated and the wheel rotation center is kept in a fixed position.

Abstract: A device for repairing a cylinder in a printing machine while the cylinder is installed in the printing machine. The device includes a cross slide rail having a base body with longitudinal guides, a longitudinal support slidably mounted on the longitudinal guides, and a transverse support connected to the longitudinal support. The cross slide rail is removably mounted to side walls of the printing machine so as to be parallel to a longitudinal axis of the cylinder to be repaired. A pull spindle is rotatably mounted to the base body and operatively connected to the longitudinal support so that the rotation of the pull spindle moves the longitudinal support along the longitudinal guides of the base body. A tool holder is connected to the transverse support for carrying a tool for working the cylinder. A mechanism for driving the cylinder is also provided.

Abstract: A process and device for machining bars, tubes or tube blanks, especially strand-cast copper blanks, in which the work piece to be machined--supported in the cross-plane of the metal-cutting device is cut on its periphery and along its length, while the die and the work piece are continually moved relative to one another in the longitudinal direction of the work piece. At least one die rotates concentrically around the work piece, which is held in a rotation-proof manner, on a plane inclined toward the longitudinal axis of the work piece and with its cutters simultaneously machines two areas of the work piece surface that are located opposite to one another.

Abstract: A tool is brought into contact with a radially outer part of an inner wall surface of a scrollwall along an X-axis at a position displaced from the center of a basic circle of an involute curve by a radius of the basic circle along a Y-axis. Thereafter, the tool and the scrollwall are relatively moved along the X- and Y-axes while rotating the scrollwall about the center of the basic circle and keeping a normal direction of the wall surface at a contact point with the tool parallel with the X-axis, so that the tool is brought into contact with the wall surface from the same wall surface. In this way, the inner wall surface the wall surface at the center and the outer wall surface can be continuously processed in the same direction. The processing can be easily corrected based on a processing error resulting from the deviation of the positional relationship from a predetermined one, with the result that the processing accuracy can be maintained at a satisfactory level.

Abstract: The invention comprises an automatic lathe apparatus adapted to be programmed for automatically cutting work pieces into contours with a pair of radial saw blades. The apparatus has an elongated frame with a center drive mechanism movably mounted on the frame intermediate the ends of the frame to accommodate variable length work pieces. The center drive mechanism provides opposing drive spindles independently driven to engage a pair of work pieces at one of their ends and drive them thereby. A pair of tail stock spindles are movably mounted and adjustable at the ends of the frame and have air operated cylinders to drive the spindles into engagement with the other ends of the work pieces. A screw operated platform is power driven by a screw to drive longitudinally along the length of the frame.

Abstract: In a method of milling at least one localized region of a workpiece the workpiece is rotated about a horizontal axis of a cylindrical region having a radius R.sub.p. An external contour of radius R.sub.F of a tool is brought into contact with the cylindrical region of the workpiece at a machining point. The tool rotates about a rotation axis intersecting a first transverse axis of the workpiece perpendicular to and intersecting the longitudinal axis. The rotation axis is in a plane parallel to the longitudinal axis and to a second transverse axis of the workpiece perpendicular to and intersecting the first transverse axis and to the longitudinal axis. The rotation axis is at an angle .alpha. to the second transverse axis such that the tangential speed of said tool parallel to said second transverse axis is equal to the tangential speed of said workpiece.

Abstract: A processing apparatus with a movable processing tool, includes a deflection detecting device, a rotating position detecting sensor, an arithmetic unit, an output circuit, a fine adjustment device, and an XY table. The detecting device detects a plurality of deflection amounts of a processing reference surface of a to-be-processed work held by a work holding member mounted to a main shaft of an NC processing apparatus. The sensor detects a rotating position of the work. The unit calculates a correcting amount of the tool at a processing point of the work from a measured value of the sensor and plural measured values of the deflection amounts of the detecting device. The circuit outputs the correcting amount synchronously with the rotating position and processing point of the work. The adjustment device has the tool fixed thereto for finely moving the tool in a processing direction based on an output from the circuit. The fine adjustment device is secured to the XY table.

Abstract: The generator for plastic lenses comprises a rotatable chuck for rotating an optical lens blank on a first axis. A drive system displaces the chuck and thereby the lens blank generally transverse to the first axis. A cutter is operably associatable with the chuck for engaging the lens blank and causing shaping thereof. The cutter includes a high speed rotary element rotatable on a second axis angularly disposed relative to the first axis. A second drive system for selectively displacing the cutter parallel to the first axis is provided. A computer control is operably associated with the first and second drive systems for coordinating displacement of the associated chuck and cutter for causing a selected curvature to be generated on the blank.

Abstract: The invention relates to a machine for machining by cutting with workholder and tool holder rotating in positive drive with respect to each other, the axis (z) of which toolholder extending askew to the workholder axis of rotation (x), is swingable and lockable about an axis (y) which intersects the axis of rotation (x) of the workpiece and the axis (z) of the toolholder at right angles, the toolholder being displaceable in the direction of the axis of rotation (x) of the workholder and the axis of swing (y) of the toolholder.

Abstract: A method and apparatus for machining a matched set of fixed and orbiting scroll members for use in a scroll compressor. The respective wrap surfaces of the scroll members are simultaneously machined by respective rotating cutting tools. Specifically, rotational and linear movement of the fixed and orbiting scroll members together, synchronized with linear movement of the cutting tools, causes the simultaneous machining of the scroll members along respective wrap surfaces that form a radially inwardly moving sealing line of contact therebetween during compressor operation. Accordingly, any systemic or random deviation from a true involute form during machining of the matching of the matched scroll member set results in complementary deviations in the respective wrap surfaces, whereby a sealed relationship between the wrap surfaces is maintained at such point of deviation during compressor operation.

Abstract: The present invention relates to a method and an apparatus for the finish-machining of the bearing diameters, particularly the main bearing diameters and of the adjoining cheek side surfaces on crankshafts and similar workpieces in a single chucking. In order that this machining can be carried out rapidly and nevertheless with a high quality of production, the following method steps are carried out, one after the other: milling of the cheek side surfaces to nominal size up to the bearing diameter; turning of the bearing diameter down to a small oversize; turning-broaching of the bearing diameters to nominal size in order to obtain a good quality surface, and possibly turning/turning-broaching of recesses, clearance cuts and undercuts in the region of the bearings.

Abstract: The machine tool of the invention combines the following three features: the workpiece holder (22) rotates around an axis (C) which is referred to as horizontal turning axis and is parallel to one (X) of the three orthogonal axes (X, Y, Z), the said axis (C) overlying a table (12) the flat upper-face of which is parallel to said turning axis (C) and comprises means for fastening one or more support and/or centering means (15, 24); the toolholder (38) comprises two clamping mandrels, one for a stationary tool and the other for a rotary tool; the workpiece holder is in relation with drive means (23, 25) which confer upon it one of the three kinematics of the following kinematic group: immobilization in a given angular position, a so-called slow speed of rotation for milling operations which are not parallel to the axis (C), and a so-called high speed for the turning.

Abstract: The device comprises a lower frame (1) with lower supporting rolls (2) to support a cylindrical body (3) to be placed thereon, rotating elements (6-11) to rotate the cylindrical body, and a cutting/machining means (4) for cutting and/or machining the cylindrical body.

Abstract: An improved apparatus and method are provided for cutting a tire surface to remove selected portions of rubber from the tire surface while the tire is rotating. The apparatus and method are especially useful in removing tread material from the tire to improve the force variation and runout characteristics of the tire. The material is removed by a cutting device such as a grinding wheel and a positioning device which holds the cutting device in a fixed cutting position for an incremental period of time while a corresponding incremental segment of the tire circumference, for instance a segment equal to 1/100 of the circumference (3.6.degree.), passes by the cutter. A sensing device measures a characteristic of the tire, such as its radial forced variation, and radial run-out of the tire is also measured.

Abstract: The present patent of invention relates to an edging machine that permits the machining of two opposite sides of a chain even contemporaneously. The machine consists essentially of a vice (4) for gripping and feeding the chain, the said vice showing a central supporting disc (16) which is journalled on a rotating shaft (3) and cooperates with circular plates (10, 15) presenting opposed inclinations. The machine is provided on its upper part with a stirrup (19) with slots (20) shaped like arcs of circle, in which edging means (21) are inserted and regulated.The arrangement and adjustment of both the gripping and feeding vice (4), and edge elements (21) allow both opposite sides of a chainlet, or single sides of two chainlets, to be machined quickly, precisely and contemporaneously according to the wished angle and depth of engraving.

Abstract: A method of machining a workpiece, which is rotatable about a first axis, by a tool pivotable about a second axis parallel to the first axis and drivable about a third axis perpendicular to the second axis. To allow the circumference of the workpiece to be machined off-center without the necessity of moving the first or the second axis transversely to the plane defined by these two axes, the workpiece and the tool are rotated or pivoted about the first .[.or.]. .Iadd.and .Iaddend.second .[.axis.]. .Iadd.axes.Iaddend., respectively, at the same time, in the same direction and at the same angular velocity and, simultaneously, the second axis is displaced transversely to the first axis at such a velocity that the equation X.sup.2 =Y.sup.2 +A.sup.

Abstract: .[.A method of.]. .Iadd.Apparatus for .Iaddend.machining a workpiece, which is rotatable about a first axis, by a tool pivotable about a second axis parallel to the first axis and drivable about a third axis perpendicular to the second axis. To allow the circumference of the workpiece to be machined off-center without the necessity of moving the first or the second axis transversely to the plane defined by these two axes, the workpiece and the tool are rotated or pivoted about the first .[.or.]. .Iadd.and .Iaddend.second .[.axis.]. .Iadd.axes.Iaddend., respectively, at the same time, in the same direction and at the same angular velocity and, simultaneously the second axis is displaced transversely to the first axis at such a velocity that the equation X.sup.2 =Y.sup.2 +A.sup.