EP0381025A1 - Méthode et dispositif pour déformation à froid de profilés de métaux ferreux et non ferreux par cintrage spatial à bobines - Google Patents

Méthode et dispositif pour déformation à froid de profilés de métaux ferreux et non ferreux par cintrage spatial à bobines Download PDF

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Publication number
EP0381025A1
EP0381025A1 EP90101359A EP90101359A EP0381025A1 EP 0381025 A1 EP0381025 A1 EP 0381025A1 EP 90101359 A EP90101359 A EP 90101359A EP 90101359 A EP90101359 A EP 90101359A EP 0381025 A1 EP0381025 A1 EP 0381025A1
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EP
European Patent Office
Prior art keywords
bending
coil
bent
bending head
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90101359A
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German (de)
English (en)
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EP0381025B1 (fr
Inventor
Walter Dipl.-Ing. Späth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPAETH, WALTER
Original Assignee
Spath Walter
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spath Walter filed Critical Spath Walter
Priority to AT9090101359T priority Critical patent/ATE105519T1/de
Publication of EP0381025A1 publication Critical patent/EP0381025A1/fr
Application granted granted Critical
Publication of EP0381025B1 publication Critical patent/EP0381025B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements

Definitions

  • the present invention relates to a method and a device for spatial roll roll bending according to the preamble of patent claim 1.
  • Spatial bending processes are known. For example, it is known from DE 36 18 701 A1, which goes back to the same applicant, to give profiles of ferrous and non-ferrous metals practically any desired shape by means of spatial bending. In this known device, however, the profile to be deformed is guided over a bending tool, pressed there and bent under deformation work. The deformation work takes place by passing on and by force transmission on the bending tool.
  • stellarator coils are required for use in fusion reactors. These are spherically curved, self-contained bobbins that are to be wound with highly sensitive coil conductors to be protected against damage.
  • coil conductors are hollow profile rods e.g. square or rectangular cross section. They have a paint layer that is sensitive to damage on the outside and a superconducting liquid in the interior, whereby neither damage to the outer skin of these sensitive profiles nor a change in cross-section may occur during the bending process.
  • the present invention is therefore based on the object the method mentioned above and the associated device so that the sensitive profiles described can be bent with high precision.
  • the method is characterized in that the spherical profile to be bent is bent freely in space without a bending template and counter bearing by the bending tool designed as a bending head, and that to secure the position of the completely bent profile leaving the bending head, a winding shape is precisely aligned below the bending line of the bending head can be adjusted at a small distance in all three spatial axes X, Y, Z and can also be rotated.
  • An essential feature of the present invention is thus that the profile (coil conductor) to be bent is bent by a bending head that works freely in space, without using a bending tool (bending template), on which the deformation work necessary for the bending is performed only by force-fitting.
  • Such a bending template such as is used in other known methods, is eliminated according to the present invention.
  • the profile passing through the bending head is thus bent in the bending head and leaves the bending head in the required shape with a spherical curve.
  • RWRB-method spatial winding roll bending process
  • This winding takes place in that the winding form is arranged in a rotatably driven manner below the bending head and accommodates the spherically curved profile leaving the bending form in the sense of a winding device.
  • the present invention is not limited to the winding of self-contained bobbins, but rather encompasses all spatial bending processes without a winding process having to follow the bending process.
  • a linear drive of the winding form is also conceivable, i.e. the spherically curved profile then leaves the bending head in the direction of its longitudinal axis and is taken up from a winding form which is likewise movable in the direction of the longitudinal axis.
  • the winding form is in this case (in both the above-described embodiments) arranged directly below and at a short distance from the outlet end of the bending head, so that a further, undesired deformation work is avoided during the transition from the bending head to the winding form.
  • the winding form is therefore only used to hold and secure the position of the fully bent coil conductors, and in the winding form itself there is no longer any work to change the shape.
  • the rotary drive of the Tool table rotates slightly faster than it corresponds to the withdrawal speed of the roll station of the bending head, so that a slight longitudinal tension is applied to the coil conductors, which are thus "relatively tight” wound onto the winding form.
  • the invention provides that the differential speed between the rotary drive of the tool table and the pull-off speed of the rolling stations of the bending head is made 0 and thereby a "tight winding" is omitted in these areas. Rather, the finished molded profile is held in these areas by sliders and other position securing means, which are only removed when this critical negative shaping area is secured by the layer above.
  • a device for carrying out the method thus uses a bending head which carries out the deformation work, which is arranged essentially rigidly at the free end of a bracket arm and the winding shape for receiving the finished bent coil conductors is arranged in a three-dimensionally adjustable and rotatably drivable manner at a short distance from the bending head.
  • the bending head itself preferably consists of a plurality of rolling stations arranged one behind the other and at a mutual distance from one another, the rolling station arranged at the outlet end of the bending head executing the actual spherical bending of the coil conductor.
  • a bending machine for performing these steps essentially has the following features: - a machine frame an overlying slide, which can be moved on the machine frame in the X direction, the slide being the carrier of the Y-rail system, a portal slide located above it, which can be moved in the Y direction, -
  • the portal slide has column frames on both sides, the heavy bearing plates support a rocker arm, the bearing plates can be moved vertically using the side slide, - the swing arm accommodates a smaller portal, which can be moved vertically laterally via a slide, -
  • a basic rotary table rests above this portal the base turntable holds a tool table on a box frame on a second level, on which the winding form is mounted, over which the coil conductor is form-wound, -
  • the bending head protrudes on a bracket arm in the center of the bending space and is slidably arranged on the bracket arm, -
  • the bending station is controlled via ten axes and can approach any bending point of a
  • a profile straightening system which is CNC-controlled, belongs to the introduction of the coil conductor to be unwound from the coil.
  • roller sets in tandem design, all of which are motor-driven and are aligned in the X, Y and Z directions as well as rotating in order to enable clean straightening.
  • This profile straightener straightens the conductor profile of the waveguide when it is unwound from a coil.
  • the coil station on which the waveguide is wound, consists of a base foundation rail frame in the Y direction to accommodate a chassis.
  • the bearing frame for receiving the coil is arranged on the chassis.
  • the storage frame is over in two rail towers Movable in the Z direction and in the Y direction. This means that the profile to be unwound can always be held in exactly the same rolling position for insertion into the profile leveling insert.
  • the coil station therefore always has the task of ensuring that the hollow profile to be unwound from this coil is always inserted into the RWR bending station in exactly the same position. This is to prevent impermissible bends and deformations from being generated on the waveguide before they enter the bending machine. Furthermore, this relatively complex coil station is a prerequisite for the fact that the conductors are always inserted into the bending station with an accuracy of a tenth of a millimeter; this is the only way to achieve the required accuracy during the bending process itself.
  • Part of the overall system for bending such waveguides is a coil transport system that consists of a rail system that leads from the RWR bending station to the coil station. After the first coil has been unwound, the coil frame is released from the warehouse and moved out to the rear on the rail system for removal. The coiled second coil, which was previously housed in the storage room of the RWR bending station, is unrolled, moved into the coil station via the rail system, latched and brought into position. Using a mobile straightening device, the now freely rolled profile section is aligned, threaded into the bending head and into the straightening machine and prepared for the second winding process with the opposite direction of rotation.
  • this winding form 48 only has the inner wall 7 and the bottom wall 8, so that the coil conductors 2-6 to be bent are inserted into this open winding form 48, which is limited and defined only by the two walls 7, 8.
  • this winding form 48 is now not subjected to tension, i. H. the coil conductors 2.6 to be bent are not rolled or stretched along the walls of this winding form 48 with stretching and bending, but rather the winding form 48 serves only as a spatial support or as a bearing block for the individual coils to be spatially bent.
  • the winding form 48 therefore only serves to ensure that the coils 2-6, which are already spatially finished and finished by the bending machine, are only placed on them and are butted together, so that, after the winding process has ended, the exact outer profile of a stellarator coil 1 by the individual coils 2 wound on one another -6 is reached.
  • the basic principle of the present bending machine is based on the fact that the winding form initially rests on a base rotary table which can be moved in a three-dimensional plane and can carry out any spatial movement in space, including a rotary movement.
  • this three-dimensional movement of the winding form has the purpose of tracking the winding form to the waveguide or coil to be bent.
  • the bending head is therefore always exactly above the line to be bent, ie the winding shape, which according to the above description only serves as a bearing block, is always spatially below the bending head under that the bending head lies exactly in the bending line.
  • the bending head can thus only be moved in the X direction according to the invention, but not in the Y direction and also not necessarily in the Z direction, although the displacement in the Z direction is preferred for other reasons and will be described later.
  • the displacement in the X direction should only be given in a preferred embodiment, because it is not necessary for a solution. However, it is preferred because, depending on the required bending contour, it is preferred to move the slide forward or backward in the X direction in order to achieve an even more precise tracking to the bending line.
  • winding form rests on a three-dimensionally movable table, which can also be rotated, and that the winding form is always set so spatially below the bending head that the currently required bending line is always tracked under the bending head.
  • the bending head itself is rigid and can only be moved in the X direction and possibly also in the Z direction for practical reasons.
  • the rigid arrangement of the bending head has the sense that the coils to be bent must always be pulled out of a coil, more precisely, from the coil straightening system without being bent or otherwise damaged.
  • the coil straightening system always holds the coil exactly (slidable in the Y and Z directions) so that the coil material to be unwound from the coil is always exactly aligned, that is, always coming in the same plane, into the bending head. This means that the coil straightening station can be moved and the bending head itself is stationary.
  • the bending head consists of a row of rollers arranged in the bending direction or in the longitudinal direction of the tube, the tube being completely encircled by a roller on its profile.
  • the bending head now consists of a series of such four-roller arrangements which form the bending head lying one behind the other in the longitudinal direction of the tube.
  • such a bending head now consists of, for example, four four-roller systems arranged one behind the other and spaced from one another, then z. B. the first three roller systems rigid both in the X direction and in the Y and Z direction, while the last, lying in the longitudinal direction of the tube four-roller arrangement is displaceable in the X, Y and Z directions.
  • this four-roller arrangement can be rotated with respect to the other three four-roller arrangements, so that torsion of the coil to be bent is achieved.
  • the system according to FIGS. 6-8 essentially consists of four components, the so-called RWR bending machine 10 being the most important component.
  • the bending machine 10 is preceded by a profile straightening system 11, which in turn is preceded by a straightening station 12 and this in turn by a coil station 13.
  • the coil conductors 17 to be bent are seated on a coil 16, the coil 16 being part of the coil station 13.
  • the coil 16 can be moved in the arrow direction 63 shown in the Z direction and also in the Y direction, in order to ensure that the end of the coil conductor 17 that is currently being processed is exactly opposite to a roll 18, which in turn aligned with the roller 19 of the device station 12.
  • the purpose of this measure is to ensure that the coil conductors 17 to be bent are always withdrawn in line 64 from the coil 16 without damage, friction and kinks.
  • the setting station 12 roughly sets up the coil conductor 17 to be bent.
  • the profile straightening insert 11 consists of a plurality of double rollers 20 which are driven in pairs and which are arranged one behind the other at a distance, the drawing in FIG. 2 also showing that also in Further double rollers 20 are provided in the Y direction, so that the coil conductor to be bent is positively embraced by the double rollers 20 from all sides.
  • the coil conductor 17 to be bent is aligned exactly axially so that it can be inserted into the bending head 52 in the aligned line 64. Because the coil conductor 17 is deformed by the winding process on the coil 16, the pre-straightening station 12 and the profile straightening system 11 provide for a reshaping, so that the coil conductor 17 to be bent is introduced into the bending head 52 as an undeformed straight line.
  • the task of this RWR bending machine is to move the winding form 48 arranged on a tool table 47 spatially so that the coil conductor 17, which has been bent three-dimensionally by the bending head 52, is placed on the winding form 48 without further reshaping or bending.
  • the winding form 48 is therefore only used for holding and securing the coil conductors 17 which have been bent by the bending head 52, whereby by special measures (namely by a difference in the rotary movement, that is to say a forward movement of the rotary movement for the tool table 47 with respect to the transport movement of the bending head 52) relative tension between the coil conductor 17, which has been bent by the bending head 52, and the winding form 48 is reached.
  • This differential movement is preferably used in the positive forming area of the winding form 48, while in the negative forming areas, as shown with the areas 65 in FIGS. 1 and 2, this lead is interrupted.
  • this area 65 the coil conductor profile 17, which is still under tension, is secured by a slide, this slide can be retracted both perpendicular to the surface 7 of the winding form 48 and also perpendicular to the bottom surface 8 of the winding form. This relaxes the profile. Then it will Profile inserted into the winding form without pretensioning, again secured by second sliders that are perpendicular and perpendicular to it.
  • the bending machine 10 has a bottom rail system 14, which is used to replace the coils 16, 50.
  • a coil 16 which is part of the coil station 13
  • a further coil 50 which contains the coil conductors 17 which have not yet been deformed and have not yet been removed from this coil.
  • the spherical winding of the coil conductor 17 by the bending head 52 is carried out starting from the center of the entire coil conductor 17 and from there it starts running to the left or right.
  • one half of the entire coil conductor 17 to be bent is present on one coil 16, while the other, not subject to the deformation, second half of the coil conductor 17 is present on the coil 50.
  • a coil change station is provided so that after the coil conductor 17 has been removed from the coil 16 to the coil 50, access is provided.
  • the coil 50 is in this case firmly mounted on a bearing block 51 on the base turntable 54 of the bending machine 10 and is held on the end face by shafts (not shown).
  • the coil 50 is moved onto the rail system 14 via a transport carriage (not shown in any more detail) and is brought to the coil station 13 in the direction of the arrow 15, the coil 50 then being clamped onto the coil station 13 and by the coil conductor to be unwound from the coil 50 is then introduced into the bending machine 10 via the device station 12 and profile straightening system 11.
  • the coil 50 After the coil 50 is connected with its second coil half 49 to the already wound winding form 48, it is a prerequisite that when the coil 50 is changed from its position shown in FIG. 2 to the position of the coil station 13, the second coil half 49 is only manual is directed so that the second half of the bobbin can be threaded into the pre-aligning station in alignment.
  • the second spool half 49 is set up via a mobile straightening insert, which is not shown in the drawings for the sake of simplicity.
  • the structure of the bending machine 10 is now as follows: on the floor rests a machine frame 22 which carries rails 23 on its upper side which are oriented in the X direction and which are at a mutual, mutually parallel distance.
  • the rails carry a carriage 24 which can be moved in the X direction.
  • the movement of this carriage 24 takes place here via spindles 25, which engage in spindle nuts (not shown in more detail) on the carriage 24 and are each driven in rotation by a motor 26, the motors 26 being arranged on the machine frame 22.
  • a portal slide 27 is mounted on this slide 24 so that it can be moved in the direction of the arrow Y.
  • the portal carriage 27 in turn carries spindle nuts on its underside, each of which is penetrated by a spindle 29 and each spindle 29 is driven by a motor 28.
  • the portal slide 27 is thus moved in the Y direction according to FIG. 8.
  • a bearing plate 31 is attached to the side portals of the portal slide 27 and can be moved in the Z direction.
  • the portal slide 27 and the other associated parts are formed in an exactly mirror-symmetrical manner, only one side of the portal slide 27 is described in more detail below, after the other side is of exactly identical design.
  • the bearing plate 31 On the side of the portal slide 27, the bearing plate 31 is mounted so that it can move in the direction of the arrow Z, a drive motor 33 rotatingly driving a spindle 32 which passes through the spindle nuts of the bearing plate 31.
  • Each bearing plate 31 carries a shaft 34, the two mutually opposite shafts 34 being aligned in an axis 66 and - which is important for the invention - the axis 66 is exactly aligned with the conductor 17 to be bent in the zero position of the bending device.
  • this neutral bending position which is defined by the displaceable axis 66, the winding form 48 arranged on the tool table 47 is then moved accordingly, so that there is a change in the opposite position with respect to the bending head 52, which is always in the same position.
  • a rocker 35 is rotatably mounted on the shaft 34 about the axis 66, the rocker 35, like the portal slide 27 in the side view of FIG. 8, having an approximately U-shaped profile, the side legs of this U-shaped profile on the underside are connected to a portal 36, which portal swings in the drawing plane of FIG. 8 and can also be moved in the Z direction via the drive, consisting of the motor 37 and the spindle 38.
  • the individual winding layers 4, 5 of the coil 2, 6 to be wound can be tracked exactly during the winding process.
  • the spherical contours of the winding shape which has the shape of the stellarator coil 1 according to FIGS. 1, 2 and 3, are tracked.
  • a fixed substructure 39 e.g. formed from a plate which carries a crown-shaped ball bearing 40 at the top.
  • a shaft 41 is rotatably mounted on the substructure 39 and is rotatably driven by a motor 42 shown in FIG. 6.
  • the shaft 41 is rotatably connected to a base turntable 44.
  • This base rotary table 44 is thus rotatable in the direction of the arrow 45 shown.
  • a box frame 46 is fixedly attached to the base rotary table 44 and carries a tool table 47 on its upper side.
  • the winding form 48 is arranged on the tool table 47 and is shown in plan view in FIG. 5 and in side view in FIG. 6.
  • the pivot drive for the rocker 35 is formed by a motor 43.
  • this motor 43 is shown on one side in FIG. 8, while it would also have to be arranged symmetrically on the other side of FIG. 3.
  • the winding form 48 essentially consists of the inner surface 7 and the bottom surface 8 of the stellarator coil according to FIGS. 1 and 2.
  • the structure of the bending head 52 is described below.
  • the bending head 52 consists of a complete roller bending tool which is able to carry out three-dimensional spherical bends under CNC control. It essentially consists of a machine housing 53 with a plurality of roller stations with the rollers 54, 55 arranged one behind the other and evenly spaced from one another.
  • three rigid roller stations each with rollers 55, are arranged one behind the other, all of which are driven in rotation and form the inlet for the coil conductor 17 to be bent.
  • Each roller station consists of four rollers 55, two rollers 55 being arranged opposite each other in pairs.
  • Such an embodiment is shown schematically in FIG. 8, where a roller station is shown only as an example. It can be seen that the rollers 56 are arranged in pairs opposite one another to rollers 57 lying perpendicular thereto.
  • the rigid roller stations 55 serve for the aligned positioning of the coil conductor and for its propulsion, which in the direction of it Longitudinal axis is introduced into the movable roller station 54.
  • the movable roller station 54 in turn has pairs of opposing rollers 56 and rollers 57 perpendicular thereto, but with the difference that each individual roller of the roller pairs 56, 57 is arranged to be displaceable and adjustable.
  • Each roller 56, 57 of the respective pair of rollers is displaceably mounted on a circular arc and can be delivered and removed in the direction of the coil conductor 17 and can also be displaced in the direction of the longitudinal axis of the coil conductor.
  • the respective double rollers 56, 57 can be adjusted in both directions of rotation on a circular path in the Z direction, on a further circular path in the Y direction and additionally rotatable about the longitudinal axis of the coil conductor.
  • the bending head 52 pre-bends the coil conductor 17 completely finished in the required shape. It has a shape as shown in FIGS. 6 to 8. After leaving the movable rolling station 54, the coil conductor 17 accordingly has its required spherical shape and is then merely threaded and inserted onto the winding form 48 which is adjusted in the three-dimensional direction.
  • the tracking of the winding form 48 exactly the corresponding previously given shape of the coil conductor therefore has the sense that a precise insertion of the coil conductor 17 leaving the roller station 54 onto the winding form 48 is ensured. This ensures that in the synchronous sequence of movements of the bending head 52 layer on layer are placed on each other with a perfect fit.
  • the bending process of the bending head 52 and the synchronous tracking of the winding form 48 is decisive for the precisely fitting manufacture of the winding layers 4, 5 of the coil conductors 17; i.e. by placing it on the winding form 48, there is therefore no longer any substantial deformation work itself.
  • the rotary drive for the tool table 47 is operated with a lead, so that the completely bent coil conductor 17 leaving the last roller station 54, with a slight pretension, lies layer by layer the winding form 48 are placed.
  • the preload can be set variably from zero to a maximum preload by adjusting the rotary drive in the direction of arrow 45.
  • this lead (in the direction of arrow 45) is removed in the negative shaping areas (areas 65 of the stellarator coil according to FIG. 1, 2) and corresponding slides are used instead to secure the shape of the coil conductors in these areas 65.
  • the entire bending head 52 is fixedly mounted on a bracket arm 59, i.e. it is fixed stationary in the room and the bracket arm 59 is mounted on a carriage 60 which can be moved on a tower 58 in the arrow directions 62 in the Z direction.
  • bracket arm 59 can be displaced in the direction of arrow 61 (X direction).
  • hollow profiles instead of the hollow profiles described, it is also possible to bend hollow profiles of open or closed profile shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP90101359A 1989-02-03 1990-01-24 Méthode et dispositif pour déformation à froid de profilés de métaux ferreux et non ferreux par cintrage spatial à bobines Expired - Lifetime EP0381025B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090101359T ATE105519T1 (de) 1989-02-03 1990-01-24 Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen durch raeumliches wickelrollbiegen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3903298A DE3903298A1 (de) 1989-02-03 1989-02-03 Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen durch raeumliches wickelrollbiegen
DE3903298 1989-02-03

Publications (2)

Publication Number Publication Date
EP0381025A1 true EP0381025A1 (fr) 1990-08-08
EP0381025B1 EP0381025B1 (fr) 1994-05-11

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EP90101359A Expired - Lifetime EP0381025B1 (fr) 1989-02-03 1990-01-24 Méthode et dispositif pour déformation à froid de profilés de métaux ferreux et non ferreux par cintrage spatial à bobines

Country Status (4)

Country Link
EP (1) EP0381025B1 (fr)
JP (1) JPH03124323A (fr)
AT (1) ATE105519T1 (fr)
DE (2) DE3903298A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024254A1 (fr) * 1992-05-29 1993-12-09 Anagnostopoulos A Panagiotis Procede et mecanisme de production de produits de fil a enroulement en spirale

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713376A (en) * 1951-12-17 1955-07-19 Cyril Bath Co Metal-forming machine
CH516466A (de) * 1968-12-16 1971-12-15 Mekanomatik Ab Aufspul- oder Abrollvorrichtung für Kabel oder Seile
US3640112A (en) * 1969-05-12 1972-02-08 Republic Steel Corp Coiling method and apparatus
AT368724B (de) * 1976-05-28 1982-11-10 Hufnagl & Co Rista Draht Biegemaschine fuer draht
US4624121A (en) * 1984-01-30 1986-11-25 Hashimoto Forming Industry Co., Ltd. Method of, and apparatus for producing multi-dimensionally bent elongate articles
DE3618701A1 (de) * 1986-06-04 1987-12-10 Spaeth Gmbh & Co Kg Stahlbau B Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2518798C3 (de) * 1975-04-28 1979-02-01 Vladimir Nikolaevitsch Shubin Biegekopf für Rohrbiegemaschinen
US4365492A (en) * 1980-06-25 1982-12-28 Intercole Bolling Corp. Ring former and cutoff

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713376A (en) * 1951-12-17 1955-07-19 Cyril Bath Co Metal-forming machine
CH516466A (de) * 1968-12-16 1971-12-15 Mekanomatik Ab Aufspul- oder Abrollvorrichtung für Kabel oder Seile
US3640112A (en) * 1969-05-12 1972-02-08 Republic Steel Corp Coiling method and apparatus
AT368724B (de) * 1976-05-28 1982-11-10 Hufnagl & Co Rista Draht Biegemaschine fuer draht
US4624121A (en) * 1984-01-30 1986-11-25 Hashimoto Forming Industry Co., Ltd. Method of, and apparatus for producing multi-dimensionally bent elongate articles
DE3618701A1 (de) * 1986-06-04 1987-12-10 Spaeth Gmbh & Co Kg Stahlbau B Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024254A1 (fr) * 1992-05-29 1993-12-09 Anagnostopoulos A Panagiotis Procede et mecanisme de production de produits de fil a enroulement en spirale

Also Published As

Publication number Publication date
DE59005656D1 (de) 1994-06-16
JPH03124323A (ja) 1991-05-27
ATE105519T1 (de) 1994-05-15
DE3903298A1 (de) 1990-08-09
EP0381025B1 (fr) 1994-05-11

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