Abstract: A groove cutting assembly comprising a cutter housing, a cutter assembly with a cutting edge, and the cutter assembly being accommodated by the cutter housing, and a drive mechanism, coupled to the cutter assembly, for indexing the cutter assembly one of radially inward and radially outward relative to the cutter housing upon rotation of the cutter assembly past an indexing member. The drive mechanism comprises a barrel assembly, engaged with the cutter assembly, and a feed member which threadedly engages with the barrel assembly. Rotation of the feed member, in a first rotational direction, indexes the cutter assembly radially outwardly away from the cutter housing, while rotation of the feed member, in an opposite rotational direction, indexes the cutter assembly radially inwardly toward the cutter housing.

Abstract: To provide a machine tool not only capable of machining an inner surface of a workpiece into a spherical surface but also capable of machining a bearing surface including a flat surface and machining the combination of a spherical surface and a flat surface, and to provide a workpiece inner surface machining method using the machine tool.

Abstract: A weight reduction re-profiling process after dynamic balance for a wheel set of a passenger train, comprising the following steps: designing a spindle end clamp and a tailstock end clamp according to structures of screw holes on an end of train axle; fixing the spindle end clamp to the train axle; hanging up the wheel set, aligning a center hole of the spindle end clamp with a top tip of a spindle end of a lathe, and inserting a handle portion of the spindle end clamp into a drive plate hole; aligning an eccentric hole of the tailstock end clamp with a scribed line on an end for weight reduction after dynamic balance by visual inspection, then sheathing the tailstock end clamp on the train axle, aligning a top tip of tailstock of the lathe with the eccentric hole of the tailstock end clamp, and tightening them; and so on.

Abstract: One embodiment relates to an apparatus for configuring a wheel associated with a train. The apparatus comprises a tool configured to engage the wheel a compound slide system for positioning the cutting tool in at least two axes and a computer control coupled to control the compound slide system. The compound slide system is controlled so that the wheel is configured in accordance with a profile. An alignment device can be utilized to align the apparatus. The apparatus can have a low profile.

Abstract: Adjusting shafts including a noise-insulating outer sleeve and shaft ends that are free therefrom are produced in a brushing device by moving rotating brushes to an inserted shaft bar which is provided in an uninterrupted manner with the outer sleeve and removing the outer sleeve in the area of the shaft ends in a brushing-off process. Advantageously, one respective continuous section of the shaft ends of two adjusting shafts located one behind another is brushed off, whereupon the two shaft ends are separated from each other.

Abstract: A method for cutting a pattern in a work piece (50), wherein the pattern includes adjacent features (52,53) separated by a pitch spacing P. The method includes providing a cutting tool assembly (74) having a first tool shank with a first cutting tip (22) to create a first feature (52) in the work piece (50) and a second tool shank with a second cutting tip (23) to create a second feature (53) in the work piece (50), wherein a distance Y between the first cutting tip and the second cutting tip is equal to nP, and wherein n is an odd integer greater than 1. The work piece is rotated (C) with respect to the cutting tool assembly (74), and the cutting tool is advanced along a lateral direction (B) with respect to the rotating work piece (50), wherein the cutting tool (74) is advanced along the lateral direction a distance of 2P for each rotation of the work piece (50).

Abstract: Rotary transmission leadthrough with: a shaft (3) able to turn about a longitudinal axis running in the longitudinal direction (L) with at least one longitudinal borehole (26, 27, 28) running in the longitudinal direction (L), in which a push rod (43, 44, 45) is arranged and can move back and forth relative to the shaft (3) in the longitudinal direction (L), and with at least one opening (22, 23) in a lateral wall of the shaft which extends to a coordinated longitudinal borehole (26, 27, 28) and at least one push fork (12, 13, 14) which can travel in the longitudinal direction (L) outside the shaft (3) and is coordinated with one of the push rods (43, 44, 45), and an active connection running through the coordinated opening (22, 23) to the coordinated longitudinal borehole (26, 27, 28) between the coordinated push fork (12, 13, 14) and the coordinated push rod (43, 44, 45), which transmits a back and forth motion of the coordinated push fork (12, 13, 14) relative to the shaft (3) onto the coordinated push rod

Abstract: A machine and method for machining parts of partial revolution. The machine has a driving sheave rotatable about a first axis and a first driven sheave rotatable about a second axis fixed relative to the first axis. An eccentric link is rotatably connected to the first driven sheave at a pivotal connection that is spaced a predetermined distance from the second axis. A belt is wrapped around the driving sheave and the first driven sheave so that rotation of the driving sheave causes the first driven sheave to rotate. A second driven sheave is rotatable about a third axis fixed relative to the second axis. A second driven sheave contacts with the eccentric link. The eccentric link moves in a reciprocating motion when said first driven sheave is caused to rotate and causes reciprocating rotary motion in the second driven sheave, which is transferred to a part being machined.

Abstract: A superhard insert for a machine tool, comprising a superhard cutter structure 20 defining a rake face 22, a flank 24 and a rounded cutting edge 26 formed by the transition between the rake face 22 and the flank 24; the flank 24 comprising a convex arcuate surface portion 28 extending away from the cutting edge 26, the arcuate surface portion 28 having a radius of curvature R2.

Abstract: A method for carrying out deep holes and/or bottle-boring, in particular borings, with a high ratio between final linear depth and hole diameter, higher than 14:1, comprises the steps of: carrying out a reference hole, having axis and diameter linked to the deep hole to be carried out by a predetermined spatial relationship; making a deep hole of a diameter smaller than the hole to be carried out, so that said reference hole and said first deep hole be in spatial communication; and prearranging a guiding and supporting element internal to said reference hole and connecting thereto a tool shaft and a related tool to obtain a contour internal to the deep hole and/or a deep hole of diameter and axis according to said predetermined spatial relationship.

Abstract: An improved method of producing elastomeric sealing devices having a plurality of removable concentric sizing rings is provided wherein the size of said first face is increased to create an extended elastomeric mounting face such that the cross-sectional area of the first face disposed against said chuck is at least 150% of the cross-sectional area of the body of said device.

Abstract: A system and method for the manufacture of aircraft landing gear axle equipment is provided of two primary steps: hot pierce and tube solid billet stock; and flow form process. The hot pierce and tube process converts a standard solid round billet by heating it well beyond its annealing temperature. The billet is then pierced with a lance and hot rolled into a seamless tube. The tube is then precision flow formed as an incremental metal forming technique in which a tube of metal is formed over a mandrel by a multiple rollers using tremendous pressure. The rollers deform the work piece, forcing it against the mandrel, simultaneously lengthening the part axially and radially thinning the cross-sectional wall of the workpiece.

Abstract: In a method for cutting freeform surfaces, a workpiece is cut by a cutting tool such that a desired freeform surface may be achieved, the cutting tool for cutting purposes being moved along at least one defined cutting path relative to the workpiece. A cutting tool is used, the tool head of which has a greater radius than a tool shank of the cutting tool.

Abstract: An arbor operably configured to facilitate positioning an element within an open end of a terminal or other device. The arbor may be operable to position the element relative to a groove or another type of difficult to reach area interior the open end. The arbor may include an assembly operable to move the element through the open end to a desired position where the element is freed to be positioned within the groove or other portion of the open end. Optionally, in the event the element is resilient, the resiliency of the element may be relied upon to cause the element to free itself from the arbor using expansion and at the same time secure itself within the groove or other portion of the open end.

Abstract: A method for machining a surface on a workpiece having a member extending perpendicularly to the surface includes determining a position of a tool, determining a position of the workpiece, positioning at least one of the workpiece and the tool to a predefined position, rotating the workpiece, and rotating the tool to a predefined rotational speed. The predefined rotational speed synchronizes the rotation of the tool with the rotation of the workpiece in order to avoid unwanted contact between the tool and the member. The method includes the steps of translating at least one of the tool and the workpiece in a direction parallel to an axis defined by the workpiece, removing material from a first portion of the workpiece, translating at least one of the tool and the workpiece in a direction perpendicular to the axis of the workpiece, and removing material from a second portion of the workpiece.

Abstract: The present invention is directed toward the design of a holding apparatus which allows contact lens lathes to hold contact lens buttons during the contact lens manufacturing process. The holding apparatus functions to hold lenses manufactured from a different sized stock than what the lens manufacturing equipment is designed to hold. In general the holding apparatus has a circular portion having a mating surface on a one side and a cylindrical protrusion extending from the other side. A contact lens lathe can hold the cylindrical protrusion of the holding apparatus while the mating surface mates with a surface on a contact lens button. The lens button and holding apparatus surfaces can be modified to allow more efficient machining of the lens buttons.

Abstract: A stationary frame is positioned in surrounding relation with the surface of a polyethylene conduit to be prepared for scraping preliminary to performing electrofusion on the conduit by a keyhole operation in an excavated underground location. A scraper tool is mounted on the frame in a fixed longitudinal position to rotate around the surface of the conduit. A cutting blade of the scraping tool extends longitudinally a preselected length on the conduit into contact with the surface of the conduit. Rotation of the scraper tool carries the cutting blade completely around the surface of the conduit to remove a uniform layer of material from the surface of the conduit. Any out of roundness existing in the conduit is removed before the scraping operation is commenced. Uniform compression is applied by split clamps surrounding the conduit. Compression of the clamps restores the conduit to a concentric configuration preliminary to the electrofusion operation.

Abstract: The method for shaping a hexagonal tool of the present invention includes the following steps: preparing a hexagonal rod having an axis and a bottom, which has a periphery; fixing the hexagonal rod on a lathe, the lathe having a clamp and a lathe tool, the hexagonal rod being clamped and rotated about the axis by the clamp, the lathe tool lathing the hexagonal rod in a single operation to form a neck portion on the hexagonal rod, a driving head being defined on the hexagonal rod between the neck portion and the bottom; and lathing a rounding edge around the periphery of the bottom by the lathe tool. As such, a hexagonal tool having a neck portion and a driving head is thus quickly formed.

Abstract: The present application is directed to devices and methods for cutting a spinal implant. In one embodiment, the device includes a handle and a head. The handle is sized to receive a predetermined length of the implant. A head is rotatably attached to the handle and includes a blade. After the implant is inserted into the handle, the head is rotated causing the blade to move around the implant and cut an excessive length from the predetermined length.

Abstract: A method and device allow automatic trimming of samples for the measurement of the rheological properties of material samples by way of a plate/plate rheometer.

Abstract: A method of machining a crankshaft using a machine tool arrangement having a cutting insert comprising a first plurality of cutting teeth comprising a rounded cutting tooth being disposed at the intersection of a first contoured side surface and a first planar side surface; and second plurality of cutting teeth comprising a rounded, corner cutting tooth being disposed at the intersection of said second contoured side surface and a second planar side surface.

Abstract: With the use of a tool (41), first cutting is applied to a work (W), and then second cutting is applied to the work (W) while the tool (41) is transferred in an X-axis direction. Then, an amount of deviation dy between the cutting edge height of the tool (41) and the center line of the work (W) is calculated based on a first diameter value (D1) and second diameter value (D2) measured after the first cutting and second cutting are applied, and the travel distance of the tool (41) between the first cutting and the second cutting. Machining to the work (W) is resumed after the amount of deviation is corrected.

Abstract: The present invention relates to a roll (26) for rolling a long semifinished article (18). The roll is rotatable about an axis of rotation (r) and comprises: a groove (44) able to reproduce a nominal arc (h) of the outer profile of the semifinished article; and a groove plane (?) which intersects, perpendicularly with respect to the axis of rotation, the roll along its smaller section. The roll is asymmetrical with respect to the groove plane (?). The invention also relates to a rolling station (22) and a continuous rolling mill (20) which comprise a plurality of such rolls. Finally, the invention relates to a method for reconditioning these rolls.

Abstract: Systems and methods that use a single-crystal boule SiC sharpened into a cutting tool for ultra-precision machining of ferrous alloys are disclosed. Conventional ultra-precision machining uses single-crystal natural diamond. Despite the exceptional mechanical properties of diamond, its chemical properties have inhibited the extension of ultra-precision machining to iron-containing (ferrous) alloys. A single-crystal SiC cutting tool can be used to cut many materials for which diamond cutting tools are conventionally used. Additionally, a single-crystal SiC cutting tool can be used to cut materials for which diamond cutting tools are inappropriate, such as ferrous metals or nickel.

Abstract: A machining tool of the present invention is used for finishing an end face having an arcuate cross section on a machined portion of a workpiece. A machining tool 30 has a tool body 31 and a cutting portion 32 provided integrally on a tip of the tool body 31. The cutting portion 32 is formed in substantially semispherical shape, and has a substantially spherical flank 33 and a substantially flat rake 35 joined to the flank 33 via an arcuate cutting edge 34. In the state that the cutting edge 34 abuts the arcuate end face of the rotated workpiece, the arcuate end face is finished using the machining tool 30 by varying the position of the cutting edge 34 abutting the arcuate end face in a circumferential direction.

Abstract: In a vibration cutting unit, a root portion of a holding member for supporting a vibration body is fixed on a fixed portion of a node portion which is common to axial vibration and bending vibration, on a jointless basis. Therefore, the node portion, namely, a vibration body main part is firmly fixed, thereby, the vibration body main part is supported stably, and vibrations of the vibration body main part is stabilized. In other words, vibrations under the mode where the vibration body main part cannot be controlled can be restrained, and works representing objects to be processed can be processed accurately.

Abstract: A preparing apparatus of an NC machining program prepares an NC machining program including a position instruction of a cutting portion of a rotary tool on the basis of a two-dimensional workpiece coordinate system having a Z-axis and an X-axis as coordinate axes. An operator inputs a lead clearance ? and a radial clearance ? to the preparing apparatus via an input operation section. A processing section converts the NC machining program prepared on the basis of the two-dimensional workpiece coordinate system into an NC machining program including a position instruction of a three-dimensional workpiece coordinate system having the X-axis, a Y-axis and the Z-axis as the coordinate axes, on the basis of the lead clearance ? and the radial clearance ?.

Abstract: A micro-scale apparatus for supporting a tool for hard turning comprises a base, a pivot coupled to the base, an actuator coupled to the base, and at least one member coupled to the actuator at one end and rotatably coupled to the pivot at another end. A tool mount is disposed on the at least one member. The at least one member defines a first lever arm between the pivot and the tool mount, and a second lever arm between the pivot and the actuator. The first lever arm has a length that is less than a length of the second lever arm. The actuator moves the tool mount along an arc.

Abstract: A cutting tool insert of a cemented carbide substrate and a coating. The cemented carbide substrate includes WC, 8-11 wt-% Co, 6.5-11 wt-% cubic carbides of metals from the groups IVb, Vb and VIb with a binder phase that is highly alloyed with tungsten. The cemented carbide has a coercivity of 8-14 kA/m. The coating includes at least one 2-9 ?m thick ?-Al2O3 layer composed of columnar grains with texture coefficients, TC(006)>2 and <6. Simultaneously, TC(012), TC(110), TC(113), TC(202), TC(024) and TC(116) are all <1 and TC(104) is the second highest texture coefficient. The total coating thickness is between 7 and 15 ?m.

Abstract: The present invention provides a method for producing a threaded joint capable of improving the life of an O.D. turning tool and consequently improving the life of a chaser. The method for producing a threaded joint, which includes O.D. turning the surface of a joint followed by threading, wherein, before the O.D. turning, the surface of the joint is descaled by shot blasting.

Abstract: A method of high-speed turning of metal using a cutting tool insert for turning of steel. The cutting tool insert includes a (006) textured ?-Al2O3 coated cemented carbide grade. The cemented carbide body has 4.5-6.5 wt-% Co and 3-10 wt-% cubic carbide forming metals and an S-value of 0.77-0.92 and a coercivity of 10-20 kA/m. The ?-Al2O3 layer has a thickness ranging from 7 to 12 ?m and is composed of columnar grains having a length/width ratio from 2 to 12 and is deposited on an MTCVD Ti(C,N) layer having a thickness from 4 to 12 ?m. The alumina layer is characterised by a pronounced (006) growth texture. The alumina layer is the uppermost layer and is wet-blasted having an Ra value of less than 1 ?m, giving the tool a black and shiny appearance.

Abstract: A cutting insert has a structure by which a sufficient surface area is in contact with a tool holder and cutting fluid can be smoothly flowed. The cutting insert has an upper face, a lower face, a plurality of side faces connecting the upper face and the lower face and a through hole passing through the upper face and the lower face, the upper face being divided into a periphery region disposed adjacently to cutting edges formed by the upper face and the side faces, and a central protruded region disposed between the through hole and the periphery region and surrounding the through hole, the central protruded region being placed higher than the edges. The periphery region is formed along all the cutting edges and includes a descent face inclined downward from a given cutting edge to the central protruded region, a bottom face and an ascent face inclined upward from the bottom face to the central protruded region.

Abstract: To provide a machine tool including a workpiece inner surface machining tool which is not only capable of machining an inner surface of a workpiece into a spherical shape but also capable of machining a bearing surface which is a flat surface and machining the combination of a spherical surface and a flat surface. A machine tool 1 machines a surface to be machined m1 located on an inner surface of a workpiece 21 by a tool 20 having: a supporting member 22; a cutting tool 23 which is supported to be pivotable about a support shaft 19 located on a plane b? perpendicular to an axis a of the supporting member 22 and has a cutting edge 23a at one end; a drive shaft 24 pivoting the cutting tool 23 by moving in an axis a direction; and a link member 25.

Abstract: Forming coated cemented carbide inserts, particularly useful in fine turning of super alloys. The inserts are characterized by a composition of a cemented carbide of WC, about 4.0 wt-% Co to about 7.0 wt-% Co, about 0.25 wt-% Cr to 0.50 wt-% Cr, and a coercivity (Hc) of about 28 kA/m to about 38 kA/m. The coating comprises a single (Ti1-xSix)N-layer, where x is between about 0.1 and about 0.25, with a crystal structure of NaCl type and a total thickness between about 0.5 ?m and about 2.0 ?m with a strong (200)-texture.

Abstract: Machine and method for machining large crankshafts, which allows simple and reliable synchronisation of the rotation of said crankshafts (14) at all points, where said machine has a machining tool (1) configured to move along at least one guide (2) between a first end supporting element (3) and a second end supporting element (4), comprising a first electronic angular position sensor (6) situated on a first rotation shaft (7) of said first end supporting element (3), also comprising a second electronic angular position sensor (8) located on a second rotation shaft (9) of said second end supporting element (4), so that the rotational movement of said first end supporting element (3) is electronically synchronised with the rotational movement of said second end supporting element (4) at all times during the machining of the crankshaft (14).

Abstract: A turning insert formed for chip-cutting metal machining of a workpiece that rotates in a direction of rotation at a first speed of rotation around a workpiece axis, the turning insert including a front surface, an envelope surface, and a circular cutting edge located where the front surface meets the envelope surface. The cutting edge extends around the front surface and lays in a plane that forms an angle ? with the envelope surface. A tool axis extends through the turning insert in a normal direction in respect of the plane, and the turning insert, during the chip-cutting metal machining, is formed to rotate around the tool axis at a second speed of rotation. The envelope surface forms a chip surface and is arranged to meet chips formed in the chip-cutting metal machining, and the chip surface includes chip breaking means.

Abstract: Disclosed is an apparatus and related methods for facilitating the application of a cutting tool to a work-piece rotating on the axis of a lathe.

Abstract: Disclosed are a method and apparatus in the field of computer numerically controlled machine tools. A rotating workpiece is brought into contact with a tool, the tool being disposed in a rotating tool holder and traversing an eccentric path. By rotating the tool holder and workpiece synchronously, various characteristics forms may be produced. The method in some embodiments is useful in the turning of noncircular shapes, such as ovoid pistons and other parts.

Abstract: A device for laser-optical generation of mechanical waves for processing and/or examining a body includes a laser light source for generation of laser light and a modulator, on which a generated laser light falls and with which, from an incident laser light, a predetermined laser light intensity distribution can be generated on or in the body, in such a way that mechanical waves are excited on or in the body, with which the body is processed and/or with which, via detection of said waves, the body can be examined. According to certain aspects of the invention, the modulator is formed as a diffractive optical element wherein a height profile structure is formed on the surface of the diffractive optical element, with which the phase of the incident laser light is varied, thus generating a predetermined laser light intensity distribution.

Abstract: A cutter is provided with a releasably secured cutting insert nested in an insert pocket. The cutting insert is generally polygonal shaped in top view, and has a protrusion received in a recess formed in a cutter body. The cutter may be applied in turning, milling, boring and/or drilling, threading and/or chamfering, facilitating usage of one interchangeable insert tool as opposed to several, solid tools.

Abstract: There is provided a roll surface machining method and apparatus for using a cutting tool to carry out ultra-precision machining in the surface of a roll with a reduced amount of data. The apparatus and method for roll surface machining includes setting a machining start position of a cutting tool with respect to the surface of the roll by C-axis indexing of the roll and positioning of the roll in the axial direction (Z-axis direction) both with respect to the cutting tool. Also the cutting tool and the roll are moved relative to each other in the axial direction of the roll by position control using C-Z axis interpolation, thereby forming a three-dimensional pattern in the surface of the roll.

Abstract: A system and method are provided for cutting scrap tires along a cut line that is generally parallel with sidewalls of the scrap tires. A base frame supports a cutting blade that is positioned to cut through the tread of a scrap tire lying on its sidewall. A blade engagement arm may be provided to at least partially receive the cutting blade from a back side of the tread portion. A motive system is provided for incrementally moving the cutting apparatus about a circumferential portion of the scrap tire as it is being cut.

Abstract: A machine tool includes a bed, a main spindle, a first tool rest, a first tool, a first driving mechanism, a second tool rest, a second tool, a second driving mechanism and a control device. The main spindle is located over the bed. The first tool is mounted on the first tool rest. The second tool is mounted on the second tool rest. The control device controls the first driving mechanism and the second driving mechanism to drive the first tool rest and the second tool rest, respectively, such that the first tool and the second tool move along the same direction, and machine a processing surface of a workpiece in order.

Abstract: An outer member and an inner member constituting a wheel bearing device are assembled and the brake rotor is fixed to the hub ring of the inner member. In this state, the pad slide surfaces of the brake rotor are lathed with the reference provided by a wheel pilot end surface. Alternatively, the wheel pilot end surface of the hub ring by chucking the knuckle pilot of the outer member with the wheel bearing device put in its assembled state, and the pad slide surfaces of the brake rotor are lathed with the reference provided by the wheel pilot end surface.

Abstract: An outer ring of a bearing device for a vehicle has a cylindrical main body extending from an inner vehicle side to an axially opposite side. The main body has a raceway at an inner peripheral surface. A flange is provided at an outer peripheral surface of the outer ring toward the ring's vehicle inner side end. A cylindrical fitting tolerance part also is provided at the outer peripheral surface of the outer ring, at a position closer to the vehicle inner side end than the flange. The axial length of the cylindrical fitting tolerance part may be designed to be any of various lengths. The bearing device is manufactured by turning the cylindrical main body while holding the flange, such as for embodiments in which the cylindrical fitting tolerance part has a short length unsuitable for holding.

Abstract: A rotary milling head removing all but a shell of a boiler tube stub and a plug to punch out from the boiler drum the remaining boiler tube stub.

Abstract: A method is provided to cut a thin-walled member without causing chattering vibration, without using a chattering vibration preventing retainer, that performs the following: (A) preparing a material having much stock for obtaining a thin-walled material, (B) while rotating the material about a center axis, cutting the inner round surface of the material within a predetermined range by feeding a cutting tool relative to material by the desired distance from one end side to the other end side of the material along the center axis, (C) while rotating the material about the center axis, cutting the outer round surface of the material within a predetermined range by feeding the cutting tool relative to the material by the desired distance from the one end side to the other end side of the material along the center axis, and (D) alternately repeating (B) and (C) to finish cutting the material.

Abstract: A process for hobble lathing, and preferred process applications, for the cutting of workpieces with non-circular or discontinuous contours on programmable lathes. The use and combination of a special program e.g. of thread cycles and hobble values for the diameter and/or the longitudinal axis or the pitch, the angle of the spindle, in option of a reciprocal-step technique and interleaved machining sequences opens up virtually infinite possibilities. The preferred applications of the process allow special threads to be cut on screw-in bodies, e.g. screw-in artificial hip joint sockets and bone screws for example with neutral or virtually any angle of pitch or relief of the thread blade as well as e.g. internal and external contours on workpieces for circular wedge connections. A particularly beneficial hip joint socket is presented comprising so-called screw or threaded surfaces.

Abstract: A numerical control machine tool has two spindles mounted in opposition to each other. In order to enable consecutive operations of lathe turning machining work in accordance with a speed command, drill machining work for drilling with rotating tools with a work positioned at a given angle, and other machining works while keeping a state where a single work is grasped by both of the spindles, switching means 152, 215 and 225 are provided which switch a reference spindle 314 to a profile control axis in a state where both of the spindles are held in the position control mode selected during spindle synchronized control, in a case where a C-axis control switching command is issued to treat the reference spindle 314 as the profile control axis while spindle synchronized control is performed for the reference spindle 314 and a synchronized spindle 324 and the synchronized spindle 324 is revolving at a command speed given to the reference spindle 314.

Abstract: An apparatus for facing a flange of a pipe comprises a housing and an anchor assembly rotatably supported by the housing. The anchor assembly is configured to engage an inner surface of the pipe. The apparatus further comprises a tool holder translatably supported by the housing. The tool holder is configured to support a facing tool for facing the flange of the pipe. The apparatus further comprises a drive shaft that is rotatable relative to the housing to translate the tool holder relative to the housing. The housing is rotatable relative to the anchor assembly about a first axis in a first direction and the drive shaft is simultaneously rotatable relative to the housing about a second axis in a second direction opposite the first direction to move the tool holder along a spiral path and thereby face the flange of the pipe.