EP0364836A2 - Procédé et dispositif pour cintrer des pièces à usiner en barres - Google Patents

Procédé et dispositif pour cintrer des pièces à usiner en barres Download PDF

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Publication number
EP0364836A2
EP0364836A2 EP89118601A EP89118601A EP0364836A2 EP 0364836 A2 EP0364836 A2 EP 0364836A2 EP 89118601 A EP89118601 A EP 89118601A EP 89118601 A EP89118601 A EP 89118601A EP 0364836 A2 EP0364836 A2 EP 0364836A2
Authority
EP
European Patent Office
Prior art keywords
bending
jaws
bending head
jaw
workpiece
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.)
Ceased
Application number
EP89118601A
Other languages
German (de)
English (en)
Other versions
EP0364836A3 (fr
Inventor
Günther-F. Pulzer
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.)
PULZER GUNTHER F
Original Assignee
PULZER GUNTHER F
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 PULZER GUNTHER F filed Critical PULZER GUNTHER F
Publication of EP0364836A2 publication Critical patent/EP0364836A2/fr
Publication of EP0364836A3 publication Critical patent/EP0364836A3/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends

Definitions

  • the invention relates to a method and a device for bending rod-shaped workpieces, with a bending head arranged on a bending table and pivotable about at least one vertical axis, with a workpiece holding and feed device for holding and advancing the rod-shaped workpiece along a horizontal axis in the direction a rear entry opening into the bending head, wherein a Bending tool of the bending head has two interchangeable jaws, which lie opposite one another over the longitudinal axis of the workpiece, which encompass the workpiece in the bending head in a form-fitting manner, and wherein the workpiece emerges from the bending head on one end face thereof.
  • Such a device is known from DE-OS 36 16 302.
  • the pipe is clamped in the bending tool between two jaws, each of which surrounds the pipe circumferentially about half.
  • the jaws have corresponding semicircular grooves which, when the jaws are placed against one another, delimit a space corresponding to the outer tube diameter.
  • the jaws enclose a cylindrical space.
  • the measure proposed in DE-OS 36 16 302 to provide the clamping jaws with several different contours of the pipe section to be clamped and to attach these clamping bodies in the bending tool in an interchangeable manner basically creates the possibility of a clamped on the device To process the workpiece one after the other with differently contoured clamping jaw sections without the workpiece having to be removed from the device, but there are considerable disadvantages with regard to the stability of the bending tool and with regard to the space required in the area of the bending head.
  • Such displacement devices result in the device building large in the area of the bending head, which is not desirable, however, since there should be as much free space as possible directly around the bending head or around the bending tool, so that workpieces that have already been bent several times are still around the smallest possible size Bending head can be pivoted without coming into contact with the bending head. Furthermore, enormous forces must be absorbed by the bending tool, so that the parts should be as compact and bulky as possible. These enormous forces can ensure that adjusting devices, such as hydraulic cylinders, which are firmly connected to these parts, impair the functionality of these adjusting devices in the shortest possible time.
  • a clamping jaw is provided with up to five differently contoured areas arranged one above the other, then, for example, is the lowest Contour is required for a bending process, in the vertical direction a rod or body blocking the free pivotability directly above the bending head.
  • the top contour is used, there is a considerable impairment of the free space immediately below the bending head. This impairment of the free space can ensure that, for example, a tube bent several times can no longer be pivoted just above the bending head or can be bent there during a bending process. As a result, the jaw must either be removed or the tube cannot be machined on this device.
  • a clamping jaw as a body rotatable about an axis running parallel to the feed axis, which is formed on its outer surfaces with differently contoured recesses or grooves for receiving a tube half.
  • the body can be rotated about a continuous axle shaft. If this clamping jaw clamps the pipe on the longer side of the bend during the bend, and is therefore exposed to considerable transverse forces, there is a risk that the axle shaft will bend due to the material giving in or the body bulging, which means that it is no longer possible to turn it for adjustment.
  • the object of the present invention is therefore to develop a device of the type mentioned with interchangeable jaws in such a way that the changing process can be carried out very quickly and easily without the stability of the bending tool being impaired or without the free space around the bending head for the Bending process is affected.
  • the object is achieved in a device in that a jaw changing device which can be brought in front of the end face of the bending head and is located there is provided, which removes the jaws in a movement away from the end face from the bending tool and uses a different pair of jaws in the opposite direction of movement.
  • the object is achieved by a method in which a jaw changing device is brought in front of the face of the head for jaw changing, the jaws were removed from the bending tool in a movement away from the face, a new pair of jaws is inserted in the opposite direction, and finally the jaw changing device is removed from the front.
  • the end face of the bending head represents an outer end of the entire device, from which only the workpiece emerging from the bending head protrudes.
  • the jaws surrounding the workpiece can be easily removed from the bending head or from the bending tool along the feed direction. A new pair of jaws can then be inserted into the bending tool in the same simple and uncomplicated manner.
  • the components located in the transverse direction next to the jaws ie the components receiving these jaws, for example a bending template on the one hand and a clamping block on the other, do not have to be moved during the changing process. No space is required above or below the clamping jaws or the bending head, since work is only carried out from the end of the bending head.
  • a side which is thus seen in all three spatial directions, is exposed with regard to the components of the device.
  • the workpiece If the workpiece is curved directly on the end face, it can be pushed out of the bending tool so far by means of the workpiece holding and feed device that the jaws can be moved out of the bending tool over their entire length in the feed direction.
  • the jaws can continue to slide around the workpiece, encircling it. If the jaws are pulled out of the bending tool to such an extent that they can be moved in the transverse direction, they are moved laterally away and picked up by the jaw changing device. Likewise, a new pair of jaws can be introduced and inserted into the corresponding gaps.
  • the workpiece can be brought into the corresponding rotating position beforehand, so that it can be moved from the new jaws to the intended position can be encompassed.
  • the jaw changing device is removed from the end face of the bending head, ie during the bending process there are no components of the changing device in the immediate vicinity of the bending head. There are therefore no protruding parts and, furthermore, no control or displacement devices which impair the stability of the tool are necessary. It is only necessary to provide that the jaws can be moved in the longitudinal direction, the insertion depth being limited by appropriate stops. During the bending process, no forces act in the direction of the pulling-off movement of the jaws, so that there is no danger that they will be pushed out.
  • the forces acting on the jaws are directed in the opposite direction during the bending process, which is also a pulling process, i.e. when the bending tool is pivoted, during which the rod-shaped workpiece is also pulled in the direction of advance or in the direction of curvature, counteracting forces act on the jaws one that faces away from the front side, i.e. press against the direction of pulling it off, so press it firmly into your bed or holder.
  • Device for bending rod-shaped workpieces that are already in operation can be used simply. be converted, i.e. it is only necessary to provide a jaw changing device and the jaws are arranged to be displaceable accordingly.
  • the jaw changing device is pivotally mounted, comes to rest laterally and at a distance from the bending head and in the rest position can be swiveled in front of the end of the bending head for a changing process.
  • This measure has the advantage that, during the bending processing operation, the changing device can be arranged at a suitable location, for example at a location on the bottom, away from the bending head, and only has to be pivoted in front of the bending head in order to carry out a changing operation.
  • the jaw changing device thus does not affect the device in the area of the bending head or in the upper area of the bending table, so that neither the actual bending process is impaired by the additional jaw changing device nor the preparatory measures, such as clamping or unclamping the tool on the bending table.
  • the jaw changing device has a magazine which can be pivoted in front of the end face and which can be equipped with a plurality of pairs of jaws, a gripper device pulling the pair of jaws from the bending tool or pushing another pair of jaws onto the latter in a movement along the feed direction.
  • This measure has the advantage that the exchange process can be carried out using mechanically simple means and, at the same time, different pairs of jaws are available in a compact arrangement.
  • the entire magazine can be pivoted into corresponding transfer positions or an endless row of pairs of jaws which can be moved in the magazine can be brought into the corresponding position.
  • the gripper device which due to the simple, linear pulling movement of the jaws from the bending tool does not have to perform any complicated movements, can be designed in a very simple manner.
  • the gripper device has a gripper for each jaw of a pair of jaws, which is directed away from the longitudinal axis of the workpiece in opposite directions and can be displaced by at least half the workpiece diameter.
  • This measure has the advantage that after the jaws have been pulled off the bending tool along the feed direction, they can be pivoted sideways so that they can be removed from the bending tool, for example, in a downward movement.
  • the new pair of jaws can be quickly brought into such a position that they can be inserted into the bending tool in a linear movement. This enables a further reduction in the dead time between two machining operations.
  • the tool magazine is designed as a rotatable turret magazine, the axis of rotation of which runs perpendicular to the end face of the bending head.
  • This measure has the advantage that an easily populated and quickly movable magazine is created, which can also be made relatively voluminous, since it only requires a working plane lying parallel in front of the end face of the bending head, an area that is exposed.
  • the magazine is easily accessible for the loading process due to the extensive arrangement of the jaws.
  • the turret magazine has U-shaped recesses arranged on the circumference, so that the magazine of the workpiece can be brought around the end face in a U-shaped manner.
  • This measure has the advantage that the magazine can be moved right up to the end face, whereby the rod-shaped workpiece lying between the jaws to be replaced can be partially gripped.
  • the gripper device for gripping the jaws, which can be gripped, for example, by short-stroke grippers of the jaw change device.
  • the entire magazine can then be moved away from the end face in the linear direction, for example, to pull off the jaws.
  • the grippers can be moved in the opposite direction of movement away from the longitudinal axis of the tool in order to remove the jaws in the transverse direction from the workpiece picked up between them.
  • the turret magazine is arranged so that it can move in the front plane in both spatial directions. This measure has the advantage that, for example in the case of workpieces which have already been bent several times and which occupy the end region in front of the bending head, a variable feed of the magazine is possible in a plane parallel to the end plane.
  • a device 10 shown in FIGS. 1 and 2 has a bending table 12, which is connected to a housing, not shown here, in which drive, control and energy supply elements are accommodated.
  • the bending table 12 is provided with a bending head 14 at an outer end opposite the aforementioned housing.
  • the device 10 is provided with a holding and feed device 16 which can be pushed back and forth along an axis 19 which also corresponds to the longitudinal axis of the bending table 12.
  • the bending table 12 and the holding and feed device 16 are displaceable relative to one another.
  • the holding and feed device 16 has on its front end facing the bending head 14 a clamping sleeve 34, in which a rod-shaped workpiece 18 is received along the axis 19.
  • the rod-shaped tool 18 in the embodiment shown in FIGS. 1 and 2 consists of a metal tube 18. With such a device, massive rod-shaped elements, for example structural steel mesh or the like, can also be processed.
  • a mandrel 33 which passes through the holding and advancing device 16 is received in the tube 18 and extends in the tube 18 up to a bending tool 20.
  • the clamping sleeve 34 is rotatable about the axis 19, so that a tube 18 clamped in the clamping sleeve 34 is rotatable about the axis 19, which represents the central longitudinal axis of the tube 18.
  • the bending tool 20 has a template 22 which has a substantially U-shaped or horseshoe-shaped contour in plan view. Along its U-shaped outer surface, the template 22 is provided with a recess or groove 35 which has an approximately semicircular cross section which corresponds to the cross section of the tube 18.
  • the template 22 is pivotable about an axis 21 and is provided for this purpose with an opening which receives a solid pin 24, the central longitudinal axis of which lies in the axis 21.
  • the template 22 is cuboid Provided recess 23 in which a first jaw 26 is received.
  • the first jaw 26 is provided with a groove which corresponds in shape and shape to the groove 35, so that a first jaw 26 which is introduced into the recess 23 completes the gap which arises in such a way that a complete horseshoe-shaped block is formed which on its bottom -shaped outside is continuously provided with the groove 35.
  • the template 22 together with the first jaw 26 is oriented such that the side flank of the U carrying the first jaw 26 lies straight on the side of the tube 18.
  • first jaw 26 there is a second jaw 28, which on its side facing the tube 18 is mirror-inverted to the corresponding side of the first jaw 26, i.e. the second jaw 28 is also provided on this side with a rectilinear groove running along the axis 19 with a semicircular cross-sectional profile, this cross-sectional profile in turn corresponding to the cross-sectional profile of the pipe 18 to be machined.
  • the second jaw 28 lies against the first jaw 26 in such a way that a straight cylindrical cavity is enclosed between these two jaws in the region of the semicircular grooves, in which the tube 18 is suitably received.
  • the second jaw 28 is received in a clamping block 30 which holds the second jaw 28 immovably in the direction of the holding and feed direction 16 or in the transverse direction to the axis 19.
  • the clamping block 30 itself can be moved transversely to the axis 19 and locked in the position shown in FIG. 1.
  • the clamping block 30 can be connected to pressure means, not shown here, so that the clamping block 30 presses the second jaw 28 firmly in the transverse direction against the first jaw 26.
  • first jaw 26, second jaw 23 and clamping block 30 are aligned with one another, run perpendicular to axis 19 and are aligned with the part of the bending head 14 that supports them.
  • the machined section 18 'of the tube is already provided with three bends or curvatures, and the tube 18 is pushed out of the bending tool 20 by a certain amount, which corresponds at least to the length dimension of the jaws 26 and 28 in the direction of the axis 19.
  • a jaw changing device 40 is arranged laterally below and at a distance from the bending table 12.
  • the jaw changing device 40 is connected to the housing or the control devices of the device 10 by means not shown here.
  • the jaw changing device 40 is designed as an independently movable and controllable unit with an independent drive, i.e. it can be arranged as an independent structural unit at a suitable location in the side area of the device 10.
  • the jaw changing device 40 has a magazine 42 which is equipped with different pairs of jaws 46, 48 ..., only one pair of jaws 46, 48 being shown here for the sake of clarity.
  • the jaws 46, 48 are held by a gripper 50 and 52, respectively, via a gripper device 44.
  • a front edge of the magazine 42 facing the bending table 12 has a distance A 'in the direction of the axis 19 from the bending head 14 and is lower by a distance A than the bending head 14.
  • the jaws 46 and 48 accommodated in the magazine 42 in contrast to the jaws 26 and 28 accommodated in the bending tool 20, have a curved groove 47 and 49, the opposite grooves 47 and 48 each having a semicircular cross section, which in turn corresponds to the cross section of the Tube 18 corresponds.
  • the curvature of the grooves 47 and 49 correspond to the last curvature 51 introduced into the tube, that is, the tube 18 should be clamped in the region of the curvature 51 between the jaws 46 and 48 in order to carry out further precise curvature processes, for example in a direction perpendicular to the plane of curvature Curvature 21 extending plane to introduce a further curvature.
  • the tube 18 is of course previously pivoted 90 ° counterclockwise by the holding and feed device 16 about the axis 19.
  • the jaw changing device 40 In order to carry out a jaw changing process, the jaw changing device 40, as can be seen in FIG. 2, is brought in front of the end face 36 of the bending head 14.
  • the magazine 42 can be displaced in the longitudinal direction of the axis 19, as indicated by an arrow 56. Furthermore, as indicated by an arrow 54, the magazine 42 can be displaced in the vertical direction.
  • the magazine 42 is also pivotable due to an articulated connection with a control mechanism, not shown here, from the lateral position shown in FIG. 1 to the position shown in FIG. 2, as indicated by an arrow 55.
  • a gripper device 44 of the magazine 42 has gripped the two jaws 26 and 28, this being done by a corresponding positive locking of hook or eye elements with corresponding elements on the jaws 26 and 28, which are not shown in detail here for reasons of clarity.
  • the jaws 26 and 28 can be moved along the axis 19 away from the end face 36 of the bending head 14.
  • the gripper device 44 has already removed the jaws 26 and 28 from the bending tool 20, wherein they have slid along the outer surface of the workpiece 18 '.
  • the jaws 26 and 28 held by the gripper device 44 are pivoted in opposite directions away from the axis 19 by at least half a tube diameter, as indicated by the arrows 58 and 59, so that they can then be lowered onto the magazine 42.
  • the jaw 50 then assumes the position of the jaw 26, whereas the jaw 52 assumes the position of the jaw 28.
  • the changing process is carried out so that after removing the jaws 26 and 28 of the clamping block 30 in the illustration of Fig. 2 is first shifted to the left, then the new jaw 46 is attached to the pivoted tube and both are inserted together into the template 22. Then the jaw 48 is pushed into the clamping block 30 shifted to the left, and then the clamping block 30 together with the jaw 48 is brought to the side of the tube 18.
  • the idea of the invention is realized to pull the jaws from the bending tool 20 in the direction of the axis 19 or to insert them into the latter.
  • the magazine 42 is arranged at a distance below the bending head 14 during the changing process. This is done essentially for illustrative reasons and it is of course possible that the magazine 42 can be raised to about the height of the bending head 14. Of course, this depends on the type of throat of the projecting in front of the end face 36 machined pipe section 18 '. It is therefore possible to carry out the changing process depending on the throat of the tube region 18 'with the magazine positioned at different heights. In order to obtain the shortest possible changing times, the magazine 42 is of course brought as close as possible to the bending tool 20.
  • the gripper device 44 or the grippers 50 and 52 can be moved both in the vertical direction and in the horizontal direction, as indicated in FIG. 2 by double arrows is so that the jaws can not only be raised, but also moved laterally into corresponding positions and placed there. New jaws can then already be brought into corresponding positions for a further change process, in order to have them available as close as possible to the bending tool 20 for a further change process.
  • These shifting or maneuvering operations are expediently carried out in the position of the jaw changing device 40 shown in FIG. 1 away from the bending table 12, that is, while a new bending process is already taking place on the bending head 14, a new pair of jaws can be provided or possibly also in the jaw changing device 40 can be removed from this or replaced.
  • the entire exchange processes or control and positioning processes can be controlled from a central control of the device or programmed via computer programs and thus run fully automatically.
  • FIG. 3 another embodiment of a device 10 'is shown, of which on the upper half of the drawing, the end face 36 i.e. the flat end face of a bending head 14 described above in connection with FIGS. 1 and 2 can be seen.
  • the same reference numerals are used for the same components as in the embodiment shown in Figs. 1 and 2.
  • the bending head 14 carries on its upper side a template 22 into which a first jaw 26 is inserted.
  • the jaw 26 is provided on its side facing the template 22 with a lateral bead 62 which overlaps extends the entire length of the jaw 26.
  • the cross section of the bead is in the form of a circular section, the circular section being more than half of a circle.
  • the bead 62 is received in a corresponding groove 63 in the template 22.
  • the first jaw 26 can be removed from the template 22, wherein it is moved towards the viewer in the representation of FIG. 3. Due to the configuration of the bead 62, i.e. the undercut of the groove 63 ensures a tight fit in the transverse direction.
  • the jaw 28 opposite the jaw 26 is provided on its side facing the clamping block 30 with a bulge 64 of the same design, which is received in a groove 65 of the clamping block 30. This also results in a connection which enables the jaw 28 to be pulled off or pushed in towards or away from the viewer, but which ensures a positive and non-positive connection in the transverse direction.
  • a tube 18 is received between the adjacent jaws 26 and 28.
  • a cantilever arm 60 extends laterally from the pin 24 and is connected to the left outer side of the bending head 14.
  • the extension arm 16 is used for a fixed connection between the pin 24 and the bending head 14 in order to ensure that the bending head 14, which is pivotable as a whole about the axis 21, is stiffened.
  • a jaw changing device 70 is arranged in front of the end face or end face 36 of the bending head 14 and is provided with an approximately circular turret magazine 72.
  • the circular surface of the turret magazine runs parallel to the end face 36. In the position shown in FIG. 3, the magazine assumes a position which corresponds approximately to the position indicated by the broken line in FIG. 2.
  • the revolver magazine can be pivoted about an axis 74, as is indicated by a double arrow 76. Furthermore, the turret magazine can be moved in height and to the side, as indicated by arrows 77.
  • the turret magazine 72 can likewise, as previously described in connection with FIGS. 1 and 2, be pivoted to a suitable location in the side area of the device and be positioned there during a bending process in order not to impair the free space around the bending head 14.
  • the magazine 72 is then pivoted in front of the end face 36 of the bending head 14 for an exchange process.
  • the revolver magazine 72 is circumferentially provided with U-shaped recesses 76 which have such a width that a workpiece 18 received between the jaws 26 and 28 and passing through them can be received in the U.
  • the recess 76 is provided on both sides with a gripper 80 or 81, which are designed, for example, as piston-cylinder units and can be displaced in the longitudinal axis 19 of the workpiece.
  • the piston rods of the piston-cylinder units have key-like projections at their front end provided that can be inserted into corresponding recesses 84 and 85 on the end faces of the jaws 26 and 28.
  • the grippers 80, 81 can be displaced in the circumferential direction in elongated holes 90 and 91 by at least half the outer workpiece diameter, as is indicated, for example, by an arrow 90.
  • the jaws 26 and 28 pulled off by the bending head 14 can be pivoted laterally to the side of the workpiece longitudinal axis 19 to such an extent that the jaws 26 and 28 can be moved past the workpiece 18, for example downward.
  • the revolver magazine 72 is lowered by a certain amount after the jaws 26 and 28 have been pulled off so that it can be moved past the workpiece, ie can be pivoted clockwise by an angle and then raised again, so that the recess 78 around the workpiece or Pipe 18 lies in front of the gaps in the bending tool 20 caused by the removed jaws 26 and 28.
  • Two grippers 82 and 83 arranged at the edge of the recess 78 each carry a jaw 86 and 88, respectively, which are to be used instead of the jaws 26 and 28.
  • the grippers 82 and 83 designed as piston-cylinder units are activated in such a way that they push the jaw 86 in the place of the jaw 26 and the jaw 88 in the place of the jaw 28.
  • the clamping block can be shifted to the left in the illustration in FIG. 3, in This shifted clamping block 30, the jaw 88 are inserted and then the assembly of the clamping block 30 and the jaw 88 is pushed laterally onto the workpiece already in the new jaw 86.
  • the jaw changing device 70 or the turret magazine 72 is again pivoted away from the end face 36 of the bending head 14 and brought into a rest position, so that there is sufficient space around the bending head 14 in order to be able to carry out further bending processes.
  • the turret magazine shown in Fig. 3 is of course provided with further U-shaped recesses, not shown here, and can carry further pairs of jaws, so that different pairs of jaws can be gradually replaced and exchanged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP19890118601 1988-10-15 1989-10-06 Procédé et dispositif pour cintrer des pièces à usiner en barres Ceased EP0364836A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883835173 DE3835173A1 (de) 1988-10-15 1988-10-15 Verfahren und vorrichtung zum biegen von stangenfoermigen werkstuecken
DE3835173 1988-10-15

Publications (2)

Publication Number Publication Date
EP0364836A2 true EP0364836A2 (fr) 1990-04-25
EP0364836A3 EP0364836A3 (fr) 1990-11-28

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Application Number Title Priority Date Filing Date
EP19890118601 Ceased EP0364836A3 (fr) 1988-10-15 1989-10-06 Procédé et dispositif pour cintrer des pièces à usiner en barres

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EP (1) EP0364836A3 (fr)
DE (1) DE3835173A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0783927A1 (fr) * 1995-12-15 1997-07-16 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. Support pivotant à positionnement automatique pour une machine à cintrer les tubes
CN114378153A (zh) * 2021-12-22 2022-04-22 中船重工西安东仪科工集团有限公司 一种薄壁钢管冷弯模具及冷弯方法

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Publication number Priority date Publication date Assignee Title
DE4225108A1 (de) * 1992-07-30 1994-02-03 Walter E Spaeth Rohrbiegemaschine zur Biegung von Hohlprofilen mit unterschiedlichen Biegeradien und Querschnitten
DE102005012551B4 (de) * 2005-03-18 2008-06-12 Tracto-Technik Gmbh Wechselvorrichtung für ein Biegemaschinensystem sowie ein Biegemaschinensystem und ein Verfahren zum Umrüsten einer Biegemaschine
DE102012005092B3 (de) * 2012-03-12 2013-06-27 Wafios Aktiengesellschaft Anordnung zum auswechselbaren Befestigen eines Biegewerkzeugs an einem einem Biegekopf einer Biegemaschine zugeordneten Halter
CN102806257B (zh) * 2012-08-03 2014-11-05 辽宁省机械研究院有限公司 一种对制冷设备用换热器进行环型折弯的装置和方法

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2171907A (en) * 1936-08-05 1939-09-05 Imp Brass Mfg Co Tube bender
DE3407499A1 (de) * 1983-03-26 1984-09-27 Rigobert Dipl.-Ing. 5000 Köln Schwarze Rohrbiegemaschine
EP0200979A2 (fr) * 1985-05-10 1986-11-12 Rigobert Dipl.-Ing. Schwarze Machine à cintrer des tubes
DE3616302A1 (de) * 1986-05-14 1987-11-19 Schwarze Rigobert Rohrbiegemaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171907A (en) * 1936-08-05 1939-09-05 Imp Brass Mfg Co Tube bender
DE3407499A1 (de) * 1983-03-26 1984-09-27 Rigobert Dipl.-Ing. 5000 Köln Schwarze Rohrbiegemaschine
EP0200979A2 (fr) * 1985-05-10 1986-11-12 Rigobert Dipl.-Ing. Schwarze Machine à cintrer des tubes
DE3616302A1 (de) * 1986-05-14 1987-11-19 Schwarze Rigobert Rohrbiegemaschine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0783927A1 (fr) * 1995-12-15 1997-07-16 C.M.L. COSTRUZIONI MECCANICHE LIRI S.r.l. Support pivotant à positionnement automatique pour une machine à cintrer les tubes
US5775157A (en) * 1995-12-15 1998-07-07 C.M.L. Costruzioni Meccaniche Liri S.R.L. Swinging self-positioning support for pipe bending machines
CN1087979C (zh) * 1995-12-15 2002-07-24 Cml机械制造股份有限公司 弯管机用的摆动式自定位支架
CN114378153A (zh) * 2021-12-22 2022-04-22 中船重工西安东仪科工集团有限公司 一种薄壁钢管冷弯模具及冷弯方法
CN114378153B (zh) * 2021-12-22 2023-11-28 中船重工西安东仪科工集团有限公司 一种薄壁钢管冷弯模具及冷弯方法

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EP0364836A3 (fr) 1990-11-28
DE3835173A1 (de) 1990-04-19
DE3835173C2 (fr) 1993-02-18

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