Abstract: A round collar maker having as one of its sections a conventional combination rotary machine, the collar maker having a pair of rollers on axles of the machine and having a guide provided with a cylindrical circumference which latter is arranged about an axis offset to one side of the axes of the shafts. The guide has an exterior portion having a cylindrical exterior rotating about a guide support which is cylindrical and horizontally elongated. The support is held on a support carrier which is attachable to the spindle of the machine. The rollers are reversible and are shaped so as to be useable, also, as rollers for a seam lock spreader which uses the same combination rotary machine as one of its sections.

Abstract: A system and apparatus for roll forming to neck-in D&I can ends and replace double necks and triple necks is disclosed. An externally disposed free roll having independently rotatable sections is moved inward and axially against the outside wall of the open end of a rotating trimmed can to form a conical neck at the open end of the cap, the two sections of the roller having different speeds depending upon neck diameters respectively engaged thereby. A spring loaded interior support roller moves under the forming force of the free roll. This is a single operation where the can rotates and the free roll rotates such that a smooth conical necked end and flange are produced.

Abstract: Open-ended cylindrical shells, such as might become beverage cans or containers, are necked (and/or may be flanged) at the open end by tooling including a cooperating internal mandrel and external forming roller; at the opposite end of the shell there is a chuck to clamp and spin the shell. The chuck spins the shell while the forming roller forces the rim portion at the open end of the shell progressively into contact with the opposed mandrel to form the neck and/or the flange. The tooling is repeated in sets at regular spaced intervals between and about a pair of rotating wheels, there being a shell supported between the tools at each tool position so that continuous production is achieved within a production loop or orbit which occupies limited space. Variations in shell thickness or metallurgy can be complied with by employing a variable speed drive both for the chuck and a rotatable collar which fits the open end of the shell. Gears are part of the variable speed drive.

Abstract: An internal or external annular surface of a ring which by cold-rolling is to be profiled with accompanying tangential expansion and substantial diametrical enlargement of the ring is preliminarily profiled by a metal-shaping process other than cold-rolling, the preliminary profile having distinctly defined lateral peripheral edges spaced from the lateral walls of the workpiece. The cold-rolling is effected by a cold rolling tool having formed on the working surface thereof facing the preliminarily profiled workpiece surface a profile which is shaped to make local contact with each of the edges of the preliminary profile of the ring and thereby begin compressively stressing the ring by the local contact before the cold rolling conforms the profile of the workpiece to the profile of the tool sufficiently to substantially increase the contact of the tool profile with the workpiece profile.

Abstract: An apparatus for crimping the leading edge of continuously produced spiral pipes is disclosed. The apparatus includes upper and lower passive crimping rollers, which are rotatably mounted adjacent each other in a holder. The holder is carried by a guide rail system which slides in the axial direction of the spirally moving pipe. The holder and rollers are rotated between a down position, where the continuously produced pipe will move freely over the crimping apparatus, and an up position where the leading edge of the pipe will pass between the upper and lower crimping rollers. When the crimping apparatus is in the up position and the leading edge of the pipe is between the crimping rollers, the lower roller is raised until the rollers cooperate to crimp the leading edge of the pipe. The spirally moving pipe will exert a force on these rollers, which causes the guide means, which carries the rollers, to move axially with the pipe.

Abstract: A method of manufacturing precise sheet metal made poly-V pulleys with poly-V grooves, being uniform in thickness of peripheral wall and free of reduction of mechanical strength, by a step of preliminarily forming a lug in the peripheral wall of a cup-shaped blank and thickening the peripheral wall, a step of forming a plurality of V-grooves in a multiple arrangement on this thickened peripheral wall by pressing from both sides with a V-groove preliminary forming roller possessing a plurality of V-grooves forming ridges and a rotary inner die possessing a plurality of V-grooves while rotating the cup-shaped blank, and a step of pressing this peripheral wall with a plurality of V-grooves with a finishing roller. Furthermore, a method of manufacturing sheet metal made poly-V pulleys having advanced precision, by a step of preliminarily forming lugs and first grooves in the peripheral wall of a cup-shaped blank, and a step of thickening the peripheral wall.

Abstract: A method of manufacturing a wheel rim for a motor vehicle, including cutting off a section of an extruded cylindrical tube to produce a hollow cylindrical rim blank, and subjecting the blank to two successive deformation steps. During the first step, only the central section of the blank is deformed radially inwardly, the diameter of the end sections remaining substantially unchanged. In the second step, only the edge portions of each end section are deformed radially outwardly, so that the region between each edge portion and the central section is unchanged in diameter. Also, the outermost part of each edge of the blank is bent into a U-shape. The rim is then gauged to finish it. The first deformation step is performed by a pair of cooperating rollers having central sections shaped to deform the central section of the blank.

Abstract: A container embossing apparatus includes a container-supporting embossing mandrel that has circumferentially-spaced, axially-extending ribs on the periphery that are engageable with a resilient forming mandrel or member so that crease lines are formed on the container during the embossing operation.

Abstract: A method for reforming at least a portion of a multiple necked-in can body to provide at least an essentially right cylindrical-shaped portion adjacent a last necked-in portion by contacting at least the portion adjacent above and below the last necked-in portion with a rotating roll and providing relative movement of the periphery of the can body with respect to the rotating roll.

Abstract: A system and apparatus for roll forming to neck-in D&I cans ends and replace double necks and triple necks is disclosed. An externally disposed free roll is moved inward and axially against the outside wall of the open end of a trimmed can. A spring loaded interior support roller moves under the forming force of the free roll. This is a single operation where the can rotates and the free roll rotates such that a smooth conical necked end and flange are produced.

Abstract: An electric drive system for automotive wheel rim forming equipment having inner and outer forming rolls mounted on driven spindles. The drive system includes separate drives for each forming roll and a control system for maintaining a predetermined speed ratio between the forming rolls in the absence of a working load thereon. The control system further maintains a predetermined torque ratio between the outputs of the drives for the forming rolls during the forming of a wheel rim by the forming rolls.

Abstract: A can fabricated from sheet material or stock of small thickness contains a can body comprising closely adjacently situated circumferential beads of high precision and mutual parallelism which impart high strength to the can body in both axial direction and radial direction.An apparatus for forming precision beads on cans formed of sheet material or stock comprises two cylinders rolling-off upon one another and provided with ribs. The cylinder, forming the inner tool, is provided with recesses or gaps in the ribs which are positioned vertically above one another to form axially parallel beads.

Abstract: An improvement in a method of manufacturing poly-V pulleys made of sheet metal, which is performed by subjecting a preformed cupshaped blank to working by a corrugating roller, an auxiliary forming roller and a finish forming roller. Prior to corrugation of the blank by the corrugating roller, a connecting portion between the peripheral wall and the bottom wall of the blank is pressed in a manner that the inside surface of the peripheral wall and the inside surface of the bottom wall are pressed into contact with each other, thereby to preform a lug which provides a side wall for grooves adjacent to the connecting portion.

Abstract: A method of forming a smooth shoulder (16, 14b, 19b), neck (17, 37) and flange (18, 38) at the open end of the cylindrical side wall (12) of a can body (10) comprises the steps of forcing a marginal edge portion (13) of the side wall into at least a first die to form a first portion of reduced diameter having a first shoulder portion (14) and a first cylindrical portion (15); and optionally applying at least one rolling operation to the first portion of reduced diameter, and any further die formed portions of reduced diameter subsequently formed, to generate a smooth shoulder (16, 14, 19b), neck (17, 37) and flange (18, 38). Reference is made to the roll forming process described and claimed in British Pat. No. 1,534,716 as being particularly suitable. The margin-portion (13) is preferably thicker than the rest of the side wall (12).

Abstract: A ring rolling machine for cold rolling bearing cages and the like has a working station (32) at which the rolling operation is performed on an annular blank by an annular die (80,82) co-operating with a mandrel (50). The die is held coaxially in a die housing (74) mounted rotatably in one of two through openings (62,64) in a shuttle (42) which is reciprocated between the working station and two alternate transfer stations (28,30) at which the front die insert (82) is ejected with the rolled ring and re-inserted with a fresh blank. The die housing projects through a slot (70) in the shuttle to engage the die drive roll (78), and via the die transmits rotation derived from the drive roll to the mandrel and a pair of mandrel support rolls (110) which apply radial force to the mandrel. The mandrel support rolls are mounted in a head on a shaft pre-tensioned to control their axial position without fasteners; they also control the axial positions of the die and mandrel.

Abstract: A method and apparatus for beading the bodies of metal containers, wherein container bodies are rolled between an inner tool and an outer tool, for instance inner and outer rolls, in order to increase their strength. To prevent sliding of the container at the inner and outer tools the container body is coaxially retained with respect to the inner tool. The outer tool is then radially moved, during the beading operation, towards the inner tool, and then the outer tool is rolled upon the inner tool and the intermediately disposed container body.

Abstract: Shapes with circular corrugations are produced by spinning a sheet metal blank under the action of oppositely directed deforming and backing forces. The blank is given the configuration of an envelope of revolution with a continuously diverging flare and is secured at the end nearest to the geometrical apex of the flare, and the circular corrugations are formed sequentially from the smaller towards the larger diameter by applying a concentrated deforming force to the inside surface of the blank, the deforming force being directed along the blank axis.

Abstract: A rim forming apparatus, substantially comprising a frame having two superimposed drivable and substantially vertically slidable spindles for applying thereon rim forming tools or rolls, the lower spindle being movable by means of a hydraulic cylinder relative to the upper spindle, while the upper spindle is tiltable in the plane through the two spindles for compensating the deflection of the two spindles during the rim forming process, wherein the spindles carrying the rim forming rolls are each received in the one end of a swivelling arm the other end of which is mounted in the frame.

Abstract: An apparatus is disclosed for providing a circumferential groove in a thin-walled cylindrical metal object such as the can or container (A) for a battery cell. As each object moves along a path (51, 90) defined between guide rails (42, 44, 46, 48, 88) and star wheels (56, 58, 78), it is supported on a spring-biased plunger (102-112) positioned in a rotatable support table (96-100). In the preferred embodiment, a groove-forming mandrel (132-138) is gradually inserted into the object as it moves along the path so that a radially extending shoulder (134) of the mandrel engages the lip of the open end of the object before the object is contacted by a groove-forming wheel (158, 160) which is rotated adjacent the path. A tapered surface (138) on the grooving mandrel and a radially extending flange (160) on the grooving wheel cooperate to form a circumferentially extending groove in the wall of the object while the object rotates. Following formation of the groove, the mandrel is withdrawn from the object.

Abstract: A cast-iron pipe having an end socket is rotated about its axis by a driven first roller applied against the outside of the socket and a driven second roller applied against the inside of the socket and pressing the latter against the first roller. The rollers can be rotated at differing speeds, and as the socket revolves they rub off or crush burrs or other irregularities on the outside and inside of the socket. A cutting tool on a pivoted lever arm is applied by motor power to an outer face of an end flange of the rotating socket to trim burrs therefrom. The second roller supported on an articulated arrangement can be swung into and out of the socket by operation of a first hydraulic jack. Another hydraulic jack arrangement presses the second roller against the inside of the socket and increases the pressure suddenly when the roller encounters a large irregularity and decreases the pressure to normal when that irregularity has passed the roller.

Abstract: A tubular blank is held in a bed, heated on one end, which is then rolled into a semisphere with an integral nipple; an adjacent portion of the blank is subsequently heated and stretch-formed by rolling to obtain a spherical continuation of the semisphere, being continued in a cylindrical portion, preferably with a stepped-down section. The remainder of the blank is then cut off.

Abstract: A method and apparatus for the manufacture of pulleys is presented, wherein the pulley is manufactured from a blank placed between a head stock and a tail stock assembly. While maintaining constant pressure between these two assemblies, the head stock assembly is spun and the pulley blank is transformed into the pulley through the application of stress upon the sidewalls of the pulley blank. When a multiple groove pulley is desired, this transformation is administered by the combination of at least two external spin rollers and at least one internal spin roller, the latter deforming the pulley blank while positioned within the internal circumference of the pulley blank and mounted on an internal roller shaft, rotatable within the pulley drive shaft. When a single groove pulley is desired, the external spin roller may deform the pulley blank.

Abstract: Modification of a standard commercial multistation transfer press is disclosed to provide greater output capacity from that press, especially in producing workpieces which require a rolling operation in the forming process. The modified press utilizes double feed rolls of sheet metal strip, and pairs of duplicate blanking, drawing and rolling stations for processing the workpieces in pairs while being advanced through the press to complete the work.

Abstract: Male threaded hose connectors in the form of an integral sheet metal piece, methods for making such connectors, and hose equipped therewith. The male threaded portion of the connector surrounds the hose and includes rolled sheet metal threads embedded in the hose material.

Abstract: A mechanism for locating a hollow tubular can body relative to an internal support mandrel including a resilient member adapted to bear against a portion of the can body in order to positively locate same. Also included is a fixed relationship between the mandrel and support apparatus located on the machine whereby the biasing of the can body toward said support apparatus acts to adjust the axial position of the can body with respect to at least one of its surfaces.

Abstract: A method and apparatus for beading canbodies, or like hollow members having at least one terminal end edge, a first annular end portion adjacent said terminal end edge, a second annular end portion adjacent said first annular end portion and a third annular end portion adjacent said second annular end portion. An inner forming means is placed within the canbody, said inner forming means having an annular inner forming surface in juxtaposition to said first annular end portion, an arcuate concave inner forming surface extending from said annular inner forming surface and in juxtaposition to said second annular end portion and a cylindrical inner support surface extending axially inward from said arcuate concave inner forming surface and in juxtaposition to said third annular end portion. An outer forming means is placed around the canbody, said outer forming means having an annular outer forming surface compatibly shaped and in radial alignment with said arcuate concave inner forming surface.

Abstract: A ring rolling mill is disclosed which has a rolling mill frame, a rolling platform mounted to the frame, a main roll movably mounted on the frame, a plurality of elongated mandrel rolls mounted laterally of the main roll, and a plurality of mandrel roll bearing housings each supporting oppositely disposed ends of each mandrel roll. Each mandrel roll and one bearing associated therewith is axially displaceable.

Abstract: A can body suitable for inward necking of the flange region is disclosed in which the flange region thereof includes a plurality of corrugations to increase the effective thickness and thus the stiffness of the metal in this flange region. A method and apparatus for producing these can bodies are also disclosed. The apparatus employed includes a pair of generally circular matched die members which are positioned on either side of the flange region of the can body to be corrugated and a means for rotating the can body, and thus the die members, when contacting the flange region of the can body.

Abstract: A method of manufacturing seamless wheel rims while maintaining a predetermined outside diameter dimension and predetermined cross-sectional shape of the rims at a high precision, without requiring any correcting work. A ring-shaped material is interposed between a rotatable die having a surface corresponding to an outer peripheral shape of a wheel rim and a rotatable pressing roll provided within the die, either of the die or roll is driven to rotate, and the pressing roll is moved toward the die so as to roll and shape the material, while restraining the outside diameter dimension by the die.

Abstract: A tubular blank is held in a bed, heated on one end, which is then rolled into a semisphere with an integral nipple; an adjacent portion of the blank is subsequently heated and stretch-formed by rolling to obtain a spherical continuation of the semisphere, being continued in a cylindrical portion, preferably with a stepped-down section. The remainder of the blank is then cut off.

Abstract: Beading apparatus is provided for producing a bead on the periphery of a hollow cylinder, such as a cam body. A rotatable inner ring and a rotatable outer ring co-act to deform a portion of the hollow cylinder therebetween to form a bead. To accommodate a firm backing of the exterior of the hollow cylinder during beading operations, while also permitting the removal of a beaded hollow cylinder from the apparatus, a depressor is provided which is formed as a basket with springing tongues separated by axially extending slots. A tapered cylinder liner is provided for forcing the springing tongues to a smaller diameter configuration to provide backing for the hollow cylinder during beading operations, with the springing tongues being movable to a larger diameter to permit removal of the hollow cylinder subsequent to beading operations.

Abstract: A machine for working generally tubular materials to perform deburring, pinch rolling and similar operations. The open end of the work is inserted over an idling roller mounted on the end of a first shaft. A second roller is rotationally driven on the end of a second shaft, and eccentric means controlled by separate (including manual) means are provided for varying the lateral clearance between the rollers to compress and effect rotation of the tubular work contemporaneously. A unique spur gear reduction arrangement includes a pinion gear on the driving NEMA C-face motor shaft which engages the larger ring gear. The ring gear is ball keyed to the shaft supporting the driven roller. An additional opening in the housing and shaft support casting is obviated, the ring gear being inserted through the motor face opening and moved laterally to engage the driven shaft over the keying ball in a driven shaft lateral bore.

Abstract: A device for producing a bead on a circumference of a hollow cylinder seeks to minimize the risk of unwanted deformations of the hollow cylinder such as wrinkles or bulges which can result when an area of the hollow cylinder to be beaded is forced inward without support. In a preferred embodiment, the device of producing a bead on a hollow cylinder includes an internal tool and an external tool which can be adjusted in a controlled manner in the radial direction, the internal tool comprising a support mandrel and an inner ring which is adjacent to the supporting mandrel in the axial direction and is capable of being adjusted radially relative thereto, and the external tool includes an outer ring which surrounds the inner ring and a hold-down ring which is axially adjacent the outer ring and capable of being adjusted radially relative thereto.

Abstract: A ring rolling machine for rolling a ring blank engaged over a mandrel roll which has an outside diameter smaller than the inside diameter of the mandrel roll comprises a rotatable main roll having an annular curved surface. The main roll is rotated about a fixed axis which is spaced at a fixed distance from the mandrel. Its curved surface is divided into a loading zone having a radius less than the spacing from said main roll access to the ring blank, a rolling zone having a variable radius curved with a continuously increasing value and a rounding zone extending between the rolling zone and the loading zone which is of substantially constant radius.

Abstract: A single electric motor is employed to drive two, separate backup roll supporting shafts which are mounted to rotate about a common horizontal axis. A first, solid, cylindrical backup roll of relatively small diameter (less than 11/2") is secured to one end of one of said shafts for rotation beneath a first grooving roll, and a second, relatively larger diameter backup roll (greater than 11/2" and less than 2"), which is annular in configuration, is secured coaxially to one end of the other shaft for rotation thereby beneath a second grooving roll. Each grooving roll is mounted for vertical reciprocation by springs and by a hydraulic ram supplied by fluid from a separate hand pump. Means is also provided for adjustably limiting the descent of each backup roll.

Abstract: A portable pipe grooving apparatus includes a pair of mating rollers mounted upon a frame so as to be radially adjustable with respect to each other. One of the mating rollers is connected to a rotatable shaft which extends rearwardly from the apparatus so as to enable the apparatus to be coupled with a drive means which is removably associable with the shaft for rotating the one roller. The frame further includes a coupling means for detachably connecting the frame to the drive mechanism by projections carried by the drive means slidably engaging within annular socket elements, which socket elements also serve as supporting legs for the frame.

Abstract: A method and apparatus for forming pulleys or similar cylindrical objects having three or more V-shaped peripheral grooves from a single piece of material is disclosed. The apparatus comprises an inner support assembly which includes at least two rotary support rolls joined together by spring means so that they may move axially relatively of each other. The method and apparatus also includes utilization of conventional exteriorly mounted preliminary preforming and final shaping rollers having the appropriate number of shaping members and with the inner rolls cooperating with the exterior rolls and being capable of moving toward and away from each other as the metal is drawn down by the exterior final shaping rolls.

Abstract: The roll comprises a solid, cylindrical, heat-treated steel rod having a threaded stud section on one end, and an externally knurled operating section on its opposite end. The stud section is adapted to thread into a bore formed in one end of the drive or work-rotating shaft of conventional roll grooving apparatus, thereby to support the operating section in the path of a conventional grooving roll which is mounted to reciprocate radially of the drive shaft between operative and inoperative positions. A circumferential groove in the operating section of the backup roll registers with a circumferential boss on the grooving roll. When one end of a piece of thin walled pipe is inserted over the operating section and the grooving roll is advanced against the pipe, the shaft is rotated and rotates the pipe so that the grooving roll forms a groove therein.

Abstract: A method of making a multi-V-grooved sheet metal pulley from a flat sheet metal strip. The strip is passed through forming rolls which preform a plurality of generally V-shaped, transversely spaced, longitudinally extending grooves in a portion of the strip, and a generally flat hub wall flange in a transversely adjacent second portion of the strip. The hub wall flange portion of the strip then is notched to preshape the flange prior to circular forming the bottom hub wall of a pulley therefrom. The preformed grooved and notched strip then is severed into individual strips, each of which provides the material for a cup-shaped sheet metal pulley. Each strip then is passed between a pair of wrapping rolls which form the strip into a circular, preferably cylindrical configuration with the strip ends located adjacent to each other. The adjacent ends of the strip then are abutted and welded together, forming a cup-shaped pulley.

Abstract: Apparatus and methods for simultaneously necking and flanging an unformed end portion next adjacent a rim portion of a cylindrical side wall portion of a sheet metal can body member to form a curved necked-in wall portion in the unformed end portion next adjacent and connected to the side wall portion and to form a radially and axially outwardly extending flange portion between the formed curved necked-in portion and the rim portion comprising:Means for rotatably supporting the can body member during the necking and flanging operation;Outer forming means mounted without the can body member in radially outwardly spaced relationship to and in axial alignment with the unformed end portion and having a curved annular outer forming surface extending therearound for engaging the outer peripheral surface of the unformed end portion to form the curved necked-in portion;Inner forming means mounted within the can body member in radially inwardly spaced relationship to and in axial alignment with the unformed end portio

Abstract: A wheel rim is formed from a cylindrical blank in an apparatus including a female die with a profiled, internal die cavity for receiving the blank and a male die, which includes a pair of shafts with eccentric portions carrying rollers for sequentially bearing against the blank to gradually form a wheel rim. During formation of the wheel rim, the female die, which is mounted on a turntable, is rotated while the male die is stationary. The blank is held between a ring portion of the male die and the central portion of the female die. The shafts carrying the rollers are independently rotatable, so that only one set of rollers actively forms the rim at any time during formation.

Abstract: Device for rolling rolling-contact bearing races from a blank by means of a die and shaping wheels comprising an inner roller for obtaining the internal profile of the race in the die from which it is separated to permit a possible extrusion of the excess material of said blank, and an outer wheel for shaping part of the external profile of the race against the action of the inner roller, said die being divided in the axial direction into two separable sections disposed on either side of said outer wheel in a die support and constituting a cavity of which the profile is designed for shaping the portions of the outer profile of the race which are adjacent to those shaped by said roller, the two die sections being fitted for free rotation in said die support.

Abstract: Apparatus for grooving pipe extending longitudinally axially comprises:A. a transversely elongated frame adapted to be displaced transversely relative to the pipe axis,B. a grooving roller having an annular boss to swage the groove in the pipe, and a back-up roller having an annular recess in transverse alignment with said boss, said rollers carried by the frame,C. and means to bodily and progressively displace one of the rollers relatively toward the other roller to cause the boss to progressively form the groove in the pipe wall being rotated between the rollers, the two rollers being rotated in response to pipe rotation.

Abstract: The invention concerns an apparatus for forming annular circumferential corrugations in the end of a helically corrugated seamed pipe. Two corrugating rolls, a backup roll and a thrust roll, engage the wall of the pipe to form the annular corrugations. The backup roll normally engages the inner wall of the pipe, and the thrust roll, the outer wall. The thrust roll is formed from a plurality of independent and transversely movable roll sections urged with a predetermined force into engagement with the pipe by a support composed of a group of rolls engaging the periphery of a corresponding roll section and mounted within a pivotable lever frame. The predetermined force is provided by a pressure-controlled hydraulic cylinder acting through each of the lever frames.

Abstract: The method of this invention produces a ring blank with a desired shape of an inner surface thereof from a ring having a plain inner surface and a profiled outer surface.The blank is shaped between two rolls, the inner one being cambered and the outer one being flat.Said camber is identical to the prescribed shape of the blank to be produced. The proposed method is an improvement on the prior art in that it takes less effort to produce intricate inner shapes as well as to shape several rings, such as raceways, simultaneously, if same should be required.

Abstract: A cold metal ring is greatly expanded in radial diameter and simultaneously contoured to a desired cross-sectional shape by successively rolling the ring between selected pairs of roll dies. If necessary, the ring may be annealed between successive cold rolling operations sufficiently to permit movement of ring material without fracturing the ring. Thereafter, the rolled ring may be expanded to a precise radial diameter utilizing a precision expander. Dimensional and contour control of the ring is comparable to that attainable by machining.

Abstract: A machine for semi-automatic grooving of pipe, capable of high output of full or less than full lengths of pipe with uniform external circumferential grooves, has supporting idler rolls for automatic positioning of the pipe axis at a small angle of deflection to draw the pipe end in as grooving progresses, with respect to a driven backup roll and a freely rotatable grooving roll. Pipe vibration during rotation is damped by hydraulic means. An adjustable groove depth control and a safety mechanism are also provided.

Abstract: A rolling machine for rolling an annular workpiece. The machine includes a mandrel for supporting the workpiece. The mandrel has two co-operating sections separated across its axis and a part of each section is shaped to conform to the rolled profile of a part of the workpiece.

Abstract: An apparatus is provided for forming a pulley having at least two grooves from a cup-shaped blank having an axially extending sidewall. The blank is crushed between axially closing dies and as the blank is being crushed, at least two rolls are translated radially into contact with the outer surface of the blank sidewall while the blank is rotated to form at least two annular pulley grooves in the sidewall of the blank. During such translation, a forming roll positioned between the axially closing dies and within the cup is radially shifted away from the longitudinal axis of the cup and into contact with the inner sidewall thereof to form a land between pulley groove pairs.

Abstract: In bellows forming with internal and external forming rolls, the external forming roll is rigidly supported, as each convolution is formed in a blank, to permit accurate control of each convolution. The blank is indexed independently of the convolutions.