Abstract: Pipe elements have circumferential grooves. The grooves have a first side surface contiguous with a first floor surface. The first side surface and the first floor surface together subtend a first 90° circular arc when viewed in cross section. The grooves also have a second side surface contiguous with a second floor surface. The second side surface is in spaced relation to and in facing relation with the first side surface. The second side surface and the second floor surface together subtend a second 90° circular arc when viewed in cross section. A third floor surface is contiguous with both the first and second floor surfaces and is a flat surface. A coupling used to connect the pipe elements has arcuate projections which engage the grooves of the pipe elements. The arcuate projections have a semi-circular cross section. Relief grooves are positioned adjacent to each arcuate projection.

Abstract: A multi-axis roll-forming system for forming a stepped diameter in a cylinder. The system includes a support configured to spin about a rotation axis while supporting a workpiece including a cylinder. A first actuator is configured to translate a first roller perpendicular to rotation axis. The first roller includes a truncated conical work surface configured to press against the inward-facing surface of the cylinder to angle it outward according to a slant angle of the truncated conical work surface.

Abstract: The invention relates to a method for shaping a workpiece having a drum-type peripheral wall, on the inner face of which an inner profile featuring longitudinal ribs is formed by feeding at least one profiling roll to said inner face. According to the invention, at least one rotatably mounted profiling roll is fed to an inner face of the peripheral wall of the workpiece, and said at least one profiling roll rotates relative to the inner face of the peripheral wall such that the inner profile is formed in the inner face in a non-cutting manner.

Abstract: Methods for producing connecting or junction elements, which in some cases may be utilized in steel structures of towers for wind turbines, may involve using a flow forming process to produce which a flange and a casing integrally adjoining the flange from a blank. Further, an end of the casing opposite the flange may be adapted to a contour of a component to which the casing is intended to be connected. In some examples, the casing may be formed with a second flange. Likewise, in some examples, at least a portion of the casing may have a conical design.

Abstract: A roller for engaging an outer surface of a pipe element during roll forming has a perimeter region defined by three faces. A channel is positioned in one of the faces. The channel extends circumferentially around the perimeter region and provides a void space that reduces the contact area between the face and the side surface of a circumferential groove formed in the pipe element during roll forming. The reduced contact area reduces frictional heating of the pipe and roller as well as the tendency of the roller to slip relative to the floor surface of the groove due to axial force engendered when an asymmetrical groove is formed.

Abstract: A rotary crimping tool assembly includes a tool housing defining a crimping chamber, and one or more crimp wheels within the crimping chamber. The crimping chamber is configured to receive the portion of the structure in proximity to the crimp wheel(s). The crimp wheel(s) are configured to be pressed into and rotated relative to the portion of the structure to form one or more crimps in the portion of the structure.

Abstract: An adjustment apparatus for adjusting a setting of a sighting device, such as a riflescope or telescope, includes an adjustment knob operatively coupled to an adjustment mechanism, where rotation of the adjustment knob about a rotational axis drives the adjustment mechanism to adjust the setting of the sighting device. The adjustment apparatus further includes a lock mechanism including a first lock element fixed relative to the sighting device and a second lock element selectively movable relative to the first lock element. When the lock elements engage one another, the adjustment knob is in a locked position and restrained from rotating about the rotational axis. The adjustment apparatus may further include a lock-release mechanism operable to disengage the lock elements and allow the adjustment knob to rotate about the rotational axis.

Abstract: Provided is a method of forming a locking ridge for a case of forming the locking ridge on an outer peripheral surface of a joint portion by form rolling, the method realizing a joint portion structure which is superior in pipe detachment prevention performance when pipes with locking ridges are connected by fixing pipe ends with a housing. Using a convex roller arranged inside the workpiece pipe body and a forming circular groove arranged outside the pipe body, the locking ridge is form-rolled such that an upright wall portion thereof is raised at an angle of at least 65° and no greater than 90° with respect to the outer peripheral surface in the pipe axis direction, and that a height of the locking ridge from the outer peripheral surface to the apex of the tip portion is at least a total of curvature radii of faces of the processing means in contact with the pipe body.

Abstract: A locking turret knob includes an adjustment member, a first member, and a second member. The adjustment member is adjustably positionable about an axis of rotation. The first member is disposed in proximity to the adjustment member and has at least one engagement member. The second member is disposed in proximity to the adjustment member and has at least one engagement surface. The adjustment member is adjustably positionable about the axis of rotation when each engagement member does not engage an engagement surface. The adjustment member is locked in a selected position about the axis of rotation when at least one engagement member engages an engagement surface. The adjustment member can be coupled to an adjuster of an optical enhancement device, such as a telescopic sight, a telescope or a microscope.

Abstract: A formation and rotation apparatus for use in forming and rotating interconnected sections of a cylindrical workpiece, including a frame and a head arranged within the frame, the head defining two slots and being operatively rotated via an integral drive assembly. A first slide block is slidably disposed within one of the two slots, and a second slide block is disposed within another of the two slots, each of the first and the second slide blocks include a cutting wheel and a beading wheel for successively forming each of the interconnected sections. An armature having an axis of rotation is also provided, along with a gripping mechanism being operatively connected to the armature. A drive mechanism selectively rotates the armature about the axis of rotation after the gripping means has closed about one of the interconnected sections.

Abstract: Connectors for assembling HVAC ducting, and methods for forming the connectors are provided. The connectors include standing-seam connectors and flanged connectors. The flanged connectors can be formed directly on ducting (e.g., spiral ducting). The methods enable the fabrication of the connectors, with exemplary fabrication methods including spin forming and radial expansion.

Abstract: To provide an embossing device, an embossing method and an embossed can which are capable of conducting embossing having a non-shaped section and an arbitral number of embossed areas, and are capable of improving quality or productivity. An embossed can 10 is a double-embossed surface can in which on a can barrel 101 a first pattern 104 is printed; a first concave part 105 is formed in the state that it is so positioned as to almost conform to the first pattern 104; a second pattern 106 is printed at a position which is distant in the circumferential direction with the non-shaped section therebetween; and a second concave portion 107 is formed in the state that it is so positioned as to almost conform to the second pattern 106.

Abstract: A bead roller is provided for manually crafting a bead from a strip of material. The bead roller may include a handle guide carrier, a first handle portion mounted for rotational movement on the handle guide carrier; a second handle portion mounted for rotational and longitudinal movement on the handle guide carrier; and a tool arm axially extending from the second handle portion and having first and second spaced apart opposing edges which define a slot which receives and engages a distal end of the strip of material. The second handle portion is configured for rotation simultaneously with the tool arm about the handle guide carrier and independently of the first handle portion.

Abstract: An effective thread number in the thread section which is disposed on the mouth section of the bottle is formed to be 2.2. That is, the thread section is formed such that the thread section 13 should serve effectively in the mouth section such that an interval between a start position and an end position should be 2.0 to 2.5. In the bottle can member 11 which has such a thread section, an outer diameter of the thread section which is formed on the mouth section is 28 to 38 mm. Also, the thickness of the mouth section is 0.25 to 0.4 mm. The thread section which has the effective thread number 2.0 to 2.5 is formed by eight-thread per inch pitch. By doing this, it is possible to put the cap desirably.

Abstract: A bead roller is provided for manually crafting a bead from a strip of material. The bead roller may include a handle guide carrier, a first handle portion mounted for rotational movement on the handle guide carrier; a second handle portion mounted for rotational and longitudinal movement on the handle guide carrier; and a tool arm axially extending from the second handle portion and having first and second spaced apart opposing edges which define a slot which receives and engages a distal end of the strip of material. The second handle portion is configured for rotation simultaneously with the tool arm about the handle guide carrier and independently of the first handle portion.

Abstract: A device for processing a pipe has a bearing plate slidably mounted on a support plate. A drive roller, engageable with an inner surface of a pipe, is mounted on the bearing plate and rotates about an axis substantially parallel to the longitudinal axis of the pipe. Support rollers, mounted on the support plate, engage and support the pipe against the drive roller. Springs are positioned in contact with the support plate and the bearing plate and bias the drive roller into engagement with the pipe. Variations in pipe wall thickness are compensated for by sliding motion of the bearing plate relatively to the support plate as the drive roller rotates and the pipe and the device move relatively to one another.

Abstract: An effective thread number in the thread section which is disposed on the mouth section of the bottle is formed to be 2.2. That is, the thread section is formed such that the thread section 13 should serve effectively in the mouth section such that an interval between a start position and an end position should be 2.0 to 2.5. In the bottle can member 11 which has such a thread section, an outer diameter of the thread section which is formed on the mouth section is 28 to 38 mm. Also, the thickness of the mouth section is 0.25 to 0.4 mm. The thread section which has the effective thread number 2.0 to 2.5 is formed by eight-thread per inch pitch. By doing this, it is possible to put the cap desirably.

Abstract: In this bottle can manufacturing method, when a portion located at the skirt portion 7 is being molded, the portion extending in an opposite direction in which the male threaded portion 6 extends from a lower end 6a of the male threaded portion 6 over a range of at least approximately 180° along a circumferential direction of the skirt portion 7, the inner surfaces of molding pre-form portions of the first circumferential wall portion and the convexly curved surface portion from among the molding pre-form portions of the skirt portion 7 are pressed outward in the radial direction of the bottle can body.

Abstract: A system is configured for forming a flange at an end of a tube. The system includes a collar configured to receive the tube. A first roller engages the collar and a second roller is configured to cooperate with the first roller to rotate the collar and the tube. A rotatable cam is disposed about the second roller and includes a cam surface configured to bend the end of the tube to thereby form the flange. The collar may be configured to restrict axial movement of the tube relative to the collar. Additionally or alternatively, the collar may be configured to restrict rotational movement of the tube relative to the collar.

Abstract: Disclosed is a device and method for forming a curl in a closable container. A process of forming a pre-curl is used, which is followed by a second separate step of forming the completed curl. The two-step process provides for higher tolerances with respect to the shape of the curl that allows the curl to be used as a sealing surface for a recloseable metal bottle. A three-step process provides for even greater tolerances and reduces longitudinal forces by completing the curl using lateral forces.

Abstract: A ring mill apparatus and method utilizes at least one hydraulic or other direct drive motor to drive a roller in contact with a ring that is to be expanded by the ring mill. The motor may be two opposed radial piston hydraulic motors, to drive an upper king roller, which contacts the outside of the ring, which is inserted between the upper king roller and a lower mandrel roller, which contacts the inside of the ring. The lower mandrel roller is urged upwards against the ring by a ram driven carriage. Two hydraulic or other direct drive motors can be provided in-line with, and directly connected to, the king roller.

Abstract: A groover extension device, used to avoid the time-consuming, physically stressful step of removing a carriage assembly, or other machine assembly, from a power machine when attaching a grooving machine to said power machine. By use of the extension device ample space is created in order for the physical mass of the carriage to physically remain in place on a power machine and still allow the power machine to be connected to a grooving machine to supply it with locomotive power to perform its grooving functions. The extension may be adapted to fit connect various types of machinery to various types of apparatuses that provide means of locomotive power.

Abstract: A method and tool for producing a flow formed part are disclosed, wherein the tool has an annular array of spline forming recesses for producing a flow formed part having splines and machining and production costs are minimized and efficiency is maximized.

Abstract: The invention provides a method of designing shaping tools for metal containers (such as metal bottles) to minimize the formation of visible transition lines or ripples conventionally produced in such procedures as die necking and outward flaring. The method involves carefully measuring differences between an actual shape produced and a design shape resulting from an original set of shaping tools. The tools are then refined in design to take into account metal spring back and the effect of one shaping stage on the results of previous stages. The redesign goes through several iterations to ensure that each change produces an improvement of the formed container. In this way, the formation of transition lines can be minimized because the actual shape of the container more closely resembles the smooth design shape. Dies designed in this way are then used for commercial shaping operations.

Abstract: A method of manufacturing a forging for forming a split casing comprising the steps of creating a forging, for example, by a ring rolling process and then deforming the forging by compressing it along a first axis and/or extending it along a second axis.

Abstract: A device for forming a circumferential groove in a pipe is disclosed. The pipe has an inner and an outer surface. The device has a first roller tool, which engages the outer surface of the pipe, and a second roller tool, which engages the inner surface of the pipe. The roller tools are arranged opposite to one another and are rotated relative to the pipe while being forced toward each other, thereby cooperating to form the groove. To prevent excessive thinning of the pipe wall, the roller tools are offset from each other along their axes of rotation. The midpoint of facing circumferential surfaces on each roller tool serves as a measuring point for the relative offset.

Abstract: A roll grooving apparatus has a back-up roller, a grooving roller positioned vertically below the back-up roller, and a hydraulic jack positioned directly vertically below the grooving roller, with the hydraulic jack exerting an upward force to push the grooving roller towards the back-up roller to form a circumferential groove in a pipe segment that is positioned between the rollers.

Abstract: A roller tool for forming circumferential grooves around a pipe is disclosed. The tool is rotatable about an axis of rotation and has a circumferential surface engageable with a pipe. The tool surface includes first and second surface portions positioned in spaced relation and oriented perpendicularly to the axis of rotation. A radial surface portion extends between the first and second surface portions and is oriented substantially parallel to the axis of rotation. An angled surface portion is positioned adjacent to the second surface portion. The angled surface portion is oriented at an angle up to about 70° and slopes away from the second surface portion.

Abstract: The invention relates to a method and a forming apparatus for deforming a hollow workpiece having at least one open end, wherein the workpiece is clamped down in a clamping device, a first forming tool is placed into contact with the outer surface of the workpiece, said workpiece and said tool are rotated about an axis of rotation relative to each other and said workpiece is deformed by means of said first tool. A second forming tool is placed into the cavity defined by the workpiece and into contact with the inner surface of the hollow workpiece, after which the workpiece is deformed by means of said second tool.

Abstract: A can body is fitted to an inner shaping tool rotatable adjacent a freely rotatable outer shaping tool outside the can body. An arm having an outer end rotatably carrying the outer shaping tool and an inner end is pivotal about its inner end. The inner tool and the can body fitted thereto are rotated to entrain and rotate the outer tool. A motor controlledly pivots the arm and thereby moves the outer shaping tool toward and away from the inner shaping tool. A position detector connected to arm senses the angular position thereof and the relative spacing of the inner and outer tools. A controller including a memory controls the motor in accordance with a sensed angular position of the arm.

Abstract: This invention relates to an improved wheel rim rolling apparatus for use in producing a vehicle wheel rim. The wheel rim rolling apparatus includes a top roll assembly having upper rim tools adapted to engage a rim blank or a partially formed rim in order to impart a desired shape thereto, a moveable member and a non-moveable member. The upper rim tools are carried by the moveable member. A first position indicating member is attached to one of the moveable member and the non-moveable member of the top roll assembly. The first position indicating member is operative to generate a visual or readable output signal which is used for determining the position of the upper rim tools of the top roll assembly. A second position receiving member is attached to the other one of the moveable member and the non-moveable member of the top roll assembly. The second member is adapted to receive the visual or readable output signal from the first member to thereby indicate the position of the upper rim tools.

Abstract: Beading of containers such as two and three piece can bodies by rolling the can body between tools, typically a roll/roll or a roll/rail of a rotary turret system. During beading, a load is applied along the central axis of the can body, whereby axial and panel performance of the beaded can is improved. This load is applied for example by the use of miniature air bags which are fixed to the turret.

Abstract: Apparatus for shaping a conduit to form a radially outwardly projecting flange at an end thereof includes a holding fixture, a collar surrounding the conduit disposed in an opening in the holding fixture, rotation imparting structure engaging the collar for simultaneously rotating the collar and the conduit and a flange forming tool connected to the holding fixture engaging a conduit end to apply bending forces to the conduit to form the flange when the conduit is rotated. The apparatus also includes a conduit cutter for cutting the conduit to form the end prior to flange formation.

Abstract: A pipe grooving tool is disclosed having a housing on which a back-up roller and a grooving roller are rotatably mounted. The grooving roller is pivotably movable toward the back-up roller and has a raised tool surface engageable with the outer surface of the pipe. The pipe is positioned with its sidewall between the rollers, and the back-up roller is rotated while the grooving roller is forcibly moved toward the back-up roller. A circumferential groove is formed around the pipe as the rollers traverse its circumference. A power drive shaft connected directly to the back-up roller is provided, the power drive shaft engaging a power drive unit on which the tool is mounted operated under power. A manual drive shaft is connected to the back-up roller through a torque multiplying gear and pinion transmission for manual operation of the tool.

Abstract: This invention relates an improved wheel rim roll forming apparatus for producing a vehicle wheel rim. The wheel rim roll forming apparatus includes an inner member adapted to support a flared wheel rim preform thereon, an outer member supported relative to the inner member, and a pair of adjustable members operatively supported by inner member. The inner member includes an outer surface having a predetermined profile and defining a centerline of the apparatus. The outer member includes an inner surface having a predetermined profile adapted to engage the flared wheel rim preform to produce a partially formed wheel rim having a desired profile. The pair of adjustable members are disposed adjacent an associated end of the flared wheel rim preform. At least one of the adjustable members is adjustable, by one of a rotational or axial movement thereof, in an axial direction with respect to the centerline of the apparatus.

Abstract: A cold rolling method and apparatus for forming an annular workpiece (10) with an outer surface (11) having a given contour and an inner surface (12) having a given contour, starting from an annular blank. A rotatable forming mandrel (21) has a working surface (21a) with a contour corresponding to that of inner surface (12) to be formed. A forming die (51) has a cavity (52) with an inner working surface (53) in form of a surface of revolution corresponding to the outer surface (11) to be formed.

Abstract: A machine may produce a tube having textured internal and external surfaces in a single operation. Inner and outer knurling tools may form the textured surfaces. The texturing of the internal and external surfaces may be helical patterns of ribs and grooves. The height of the ribs formed in the internal and external surfaces may be less than about 35 mils. The angles of the patterns relative to a longitudinal axis of the tube may be less than about 45°. The angle of the helical pattern allows textured tubes to be used as heat exchanger elements wherein flow is directed substantially coaxial to the longitudinal axes of the tubes. The helical pattern formed in the external surface may be oriented in a right hand or left hand helical orientation. Similarly, the helical pattern formed in the internal surface may be oriented in a right hand or left hand orientation.

Abstract: An apparatus and method for forming grooves in a pipe for receiving mechanical pipe clamps are disclosed. The apparatus includes a holding fixture for securing the pipe and a carriage rotatably mounted on the holding fixture. Two arms are pivotably mounted on the carriage and extend on opposite sides of the pipe. Each arm has a grooving roller rotatably mounted thereon. An actuator connects the arms and forces the grooving rollers into engagement with the pipe. The carriage, arms, actuator and grooving rollers are rotated about the pipe in an orbit to form the circumferential groove. The method steps include forcing the grooving roller into the surface of the pipe at a fixed rate per revolution of the grooving rollers about the pipe in the orbit.

Abstract: Beading of containers such as two and three piece can bodies by rolling the can body between tools, typically a roll/roll or a roll/rail of a rotary turret (10) system. During beading, a load is applied along the central axis of the can body, whereby axial and panel performance of the beaded can is improved. This load is applied for example by the use of miniature air bags (19) which are fixed to the turret.

Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the grooving roll radially toward and away from the drive roll, and a release arrangement between the feed screw and arm is operable to release the arm from the screw to protect the screw from damage. The feed screw is mounted on the housing and arm by a double pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove of the drive roll and/or by inclining the axis of the grooving roll relative to the axis of the drive roll and/or by tapering the rolling surface on the rolling projection of the grooving roll and/or by supporting the axially outer end of the drive roll against deflection.

Abstract: Hydraulically operated roll grooving apparatus comprises vertically oriented idler and backup grooving rolls each rotatable about a corresponding roll axis, a fluid actuator for displacing the idler roll toward the backup roll, a manually operated pump for supplying fluid under pressure to the fluid actuator, and a stabilizer for stabilizing a pipe being roll grooved. The pump and stabilizer are mounted on the same side of the apparatus with respect to the roll axes, and the pump has a vertically oriented major dimension and a pump operating lever including a removable handle.

Abstract: The present invention relates to a reinforcement device (1, 100), especially a reinforcement device useable in a machine for laminating rims for wheels of automotive vehicles, the machine comprising at least two substantially parallel laminating axles (21, 22, 121, 122), the reinforcement device (1, 100) being characterized by comprising a body (4, 101) associated to the housing (2, 102) of the lamination machine, the positioning of the body being variable with respect to the housing (2, 102), the body (4, 104) being provided with two bearings (41, 42, 141, 142) supportable on respective end regions of the axles (21, 22, 121, 122), so that the axles (21, 22, 121, 122) are maintained substantially parallel during the operation of laminating the rim, at least one bearing being moveable with respect to the reinforcement device by a moving means (51, 52, 150).

Abstract: Roll grooving apparatus for rolling a circumferential groove in a pipe comprises a first support rotatably supporting a first grooving roll, a second support rotatably supporting a second grooving roll and being displaceable relative to the first support for displacing the second grooving roll toward and away from said first grooving roll, a stabilizer on the first support for stabilizing a pipe to be roll grooved, and first and second guards pivotally mounted on the second support for displacement therewith. The first guard engages the stabilizer, the second guard engages a pipe being roll grooved during a roll grooving operation and each guard is spring biased to engage the corresponding one of the stabilizer and a pipe being roll grooved. A member on the first support engages and displaces the second guard away from a pipe which has been roll grooved when the second support is displaced to move the second grooving roll away from the first grooving rolls.

Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the grooving roll radially toward and away from the drive roll, and a release arrangement between the feed screw and arm is operable to release the arm from the screw to protect the screw from damage. The feed screw is mounted on the housing and arm by a double pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove of the drive roll and/or by inclining the axis of the grooving roll relative to the axis of the drive roll and/or by tapering the rolling surface on the rolling projection of the grooving roll and/or by supporting the axially outer end of the drive roll against deflection.

Abstract: A forming or re-rounding machine has opposed inner and outer hydraulic ram sets each carried in a housing with rollers. The ram set housings are movably mounted onto an I-beam frame connected by hydraulic cylinders. The frame supports a can or shell for rotation of the surface to position a region for forming or reforming between the hydraulic ram sets. Each ram set has a hydraulic cylinder for advancing a re-forming tool on either the inside or outside of the can or shell to reform the selected region. The I-beam hydraulic cylinders are allowed to compress when the can or shell is positioned for forming or reforming and help prevent flexing of the can or shell outside the selected region.

Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the grooving roll radially toward and away from the drive roll, and a release arrangement between the feed screw and arm is operable to release the arm from the screw to protect the screw from damage. The feed screw is mounted on the housing and arm by a double pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove of the drive roll and/or by inclining the axis of the grooving roll relative to the axis of the drive roll and/or by tapering the rolling surface on the rolling projection of the grooving roll and/or by supporting the axially outer end of the drive roll against deflection.

Abstract: Formerly, several machines or workstations have been required for bordering and closing creases, especially on pipes used in ventilation technology. The invention provides a machine that can carry out all of the operations without the workpiece having to be rechecked. By positioning the closing wheel (6), known per se, underneath the work surface, all of the operations, including the insertion of a sealing strip, can be carried out precisely and economically at the same workstation. According to a preferred method, a bead is first pressed in the workpiece (100) using a moulding roll (2) and a beading and feeding roll (1). During machining with these hydromechanically driven rolls (2, 1), the workpiece (100) is held in the correct working position. The closing process is carried out from the bottom and enables optimum adjustment of the angle of intervention on the closing wheel (6) and reduces wear.

Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the grooving roll radially toward and away from the drive roll, and a release arrangement between the feed screw and arm is operable to release the arm from the screw to protect the screw from damage. The feed screw is mounted on the housing and arm by a double pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove of the drive roll and/or by inclining the axis of the grooving roll relative to the axis of the drive roll and/or by tapering the rolling surface on the rolling projection of the grooving roll and/or by supporting the axially outer end of the drive roll against deflection.

Abstract: In order to improve a sheet metal forming machine comprising a machine frame, a first roller tool mounted on the machine frame for rotation about a first roller axis, a second roller tool which is rotatable about a second roller axis, interacts with the first roller tool and is mounted for rotation in a feed bearing which, for its part, can be moved and fixed in position in relation to the machine frame transversely to the first roller axis by means of a feed drive so that a feed position of the second roller tool relative to the first roller tool can be adjusted and a roller drive for at least one of the roller axes, in such a manner that this can be operated as simply as possible it is suggested that the feed drive be designed as a feed drive which can be controlled as to its position by a control and by means of which the second roller tool can be moved into feed positions predeterminable in a defined manner, that the roller drive be designed as a controllable roller drive and that roller axis positions of

Abstract: Apparatus for roll grooving thin wall pipe comprises a housing supporting a drive roll and an arm pivotally mounted on the housing and supporting a grooving roll. A feed screw between the housing and arm provides for pivoting the arm to displace the grooving roll radially toward and away from the drive roll, and a release arrangement between the feed screw and arm is operable to release the arm from the screw to protect the screw from damage. The feed screw is mounted on the housing and arm by a double pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove of the drive roll and/or by inclining the axis of the grooving roll relative to the axis of the drive roll and/or by tapering the rolling surface on the rolling projection of the grooving roll and/or by supporting the axially outer end of the drive roll against deflection.