EP0343624A2 - Procédé et dispositif pour déformer des produits comme profils creux, tubes etc. - Google Patents

Procédé et dispositif pour déformer des produits comme profils creux, tubes etc. Download PDF

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Publication number
EP0343624A2
EP0343624A2 EP89109378A EP89109378A EP0343624A2 EP 0343624 A2 EP0343624 A2 EP 0343624A2 EP 89109378 A EP89109378 A EP 89109378A EP 89109378 A EP89109378 A EP 89109378A EP 0343624 A2 EP0343624 A2 EP 0343624A2
Authority
EP
European Patent Office
Prior art keywords
pieces
shaped
elastic
piece
hollow
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.)
Withdrawn
Application number
EP89109378A
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German (de)
English (en)
Other versions
EP0343624A3 (fr
Inventor
Günter Otto
Christian Otto
Johannes Lübbering
Christian Reckendrees
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0343624A2 publication Critical patent/EP0343624A2/fr
Publication of EP0343624A3 publication Critical patent/EP0343624A3/fr
Withdrawn legal-status Critical Current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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/10—Stamping using yieldable or resilient pads
    • B21D22/105—Stamping using yieldable or resilient pads of tubular products

Definitions

  • the invention relates to a method and a device for deforming material such as hollow profiles, pipes, etc., and in particular aluminum profiles and similar material, the material in a receiving gap between a hollow mold provided with one or more recesses and in each case one of the relevant recess opposite fitting is introduced and is deformed by means of the fitting into the respective recess.
  • this material is usually placed on the hollow mold (die), after which a rigid molded part is arranged on the opposite side and pressurized, as a result of which the material is deformed into the hollow mold.
  • the shape of the molding is too sharp, there is a risk of shearing off or at least damage to the material. At least permanent stresses are often caused in the workpiece. Particular difficulties arise especially when a bent or tubular material is to be deformed instead of a flat metal sheet. If, for example, a pipe is to be provided with a constriction or a ring-shaped widening, a single tool cannot be moved in the radial direction as a rigid fitting because of the change in diameter that is necessary.
  • Verfor happens tion by rolling during a rotary movement or by several separate stamps acting on the circumference of the tube, the risk of injury to the workpiece being particularly great.
  • Problems for the deformation also arise in particular when a permanent, non-positive and possibly also tight connection between a tube and a rod-shaped end piece is to be produced by the deformation. Such a connection can only be achieved very imperfectly with the previous methods.
  • the object of the invention is to provide a method and a device for deforming material such as hollow profiles or pipes of the type mentioned in order to be able to reliably carry out the intended deformation in a simple manner, the risk of damage to the material being largely eliminated during the deformation and that Stresses in the material are prevented.
  • each molded piece consisting of elastic material and arranged in a chamber is subjected to pressure and is thereby temporarily deformed in the direction of the respective recess of the hollow shape in such a way that permanent deformation of the material is caused.
  • the respective shaped piece is acted upon by pressure in a direction parallel to the material surface, as a result of which, due to the arrangement of the shaped piece in each chamber, it is elastically deformed in a direction perpendicular to the material surface.
  • the method according to the invention can be used particularly advantageously for deforming tubular material.
  • the tubular material is arranged in an annular gap between a cylindrical hollow mold and a layered column of annular elastic shaped pieces and non-elastic intermediate piece, and then the column is pressurized in the axial direction, the material being deformed in the radial direction by elastic deformation of the shaped pieces becomes.
  • This deformation of a pipe section can take place both inwards and outwards in the radial direction, the elastic molded pieces with the non-elastic intermediate pieces being correspondingly arranged outside or inside the pipe to be deformed.
  • the hollow mold is then attached to the opposite side accordingly.
  • a particularly favorable application of the method results from the connection of an aluminum or steel tube piece with a rod-shaped end piece, this rod-shaped end piece first being inserted as a hollow shape into the tubular material and this arrangement being introduced into a corresponding receiving bore of a housing with ring-shaped shaped pieces and intermediate pieces.
  • the aluminum or steel tube is deformed into annular grooves in the end piece, as a result of which a permanent and non-positive connection is achieved.
  • each shaped piece consists of elastically deformable material, that each shaped piece is arranged in a chamber of a housing and is closely enclosed by the chamber walls in all directions except for the direction towards the receiving gap, and that at least one Chamber wall is adjustable by means of a stamp in order to pressurize the shaped piece and to deform it in the direction of the receiving gap. Additional developments and refinements of the invention are specified in the subclaims.
  • the device shown in Fig. 1 has a housing 1 for receiving the deformation tool and a printing device.
  • the pressure is exerted from the outside via a stamp 2 on a piston 3 which can be displaced in the housing.
  • This pressure can be generated, for example, via a hydraulic press or also via a mechanical device.
  • the pressure and stroke limitation is not limited by the applied pressure size, but by the piston clearance 2a between the stamp 2 and the edge of the housing.
  • the piston 3 acts via a seal 4 on a pressure chamber 5 which is filled with a hydraulic fluid.
  • the angular chamber 5 also deflects the pressure direction, so that the pressure exerted via the second seal 7 continues on a piston 6. This piston 6 then acts on the actual deformation tool.
  • the deformation tool consists of a base part 8 and a casing 9 and interacts with a counter plate 11 which is firmly connected to the housing 1 by means of screws 10. Between the jacket 9 and the counter plate 10, a spring 17 is arranged, which supports the tool 8, 9 on the counter plate 11 and biases it against the piston 6 in its rest position.
  • the tool consisting of the bottom 8 and the casing 9 is mounted in a bore 1a of the housing 1 so as to be displaceable in the axial direction.
  • a pressure piece 11a is also formed, which in the inner bore 9a of the casing 9 engages and can be moved in the axial direction thereof in relation to the casing 9.
  • annular shaped pieces 12, 13, 14, 15 and 16 are arranged, alternately with corresponding annular intermediate pieces 29, 30, 31 and 32. All of these shaped pieces and intermediate pieces are attached to the outside with their Adjusted inner diameter of the jacket 9, so they lie on the inner wall 9a of this jacket (or the bottom piece).
  • the inner diameters of the shaped pieces and intermediate pieces are dimensioned such that a pipe 33 to be deformed can be inserted appropriately.
  • this tube 33 is to be pressed onto a rod-shaped end piece 40 provided with annular grooves 35, 36, 37, 38 and 39.
  • the elastic shaped pieces 12, 13, 14, 15 and 16 can be made of any suitable material, for example rubber or plastic. These fittings should preferably have a hardness of approx. 99 Shore and a 100% restoring force.
  • the stamp 2 is pressed into the housing 1 from the outside, as far as the stroke 2a permits.
  • the piston 6 is pressed onto the base piece 8 via the hydraulic conversion, as a result of which the tool consisting of the base piece 8 and the casing 9 is moved to the right against the force of the spring 17 in the direction of the counter plate 11.
  • the elastic shaped pieces 12, 13, 14, 15 and 16 are each pressed together and deformed. However, since they each lie in a chamber formed by the base piece 8 or the casing 9 and by the intermediate pieces 29, 30, 31 and 32 and the pressure piece 11a, they can only deform inwards in the radial direction.
  • the special shape of the elastic fittings prevents injury or damage to the workpiece. Tests have also shown that the speed at which the parts are deformed depends only on the flow rate of the part to be deformed. The magnitude of the applied force has no influence on the rate of deformation.
  • hollow bodies made from a wide variety of materials in particular also from aluminum, can be deformed.
  • hollow bodies made of aluminum with a seawater-resistant surface for example anodized aluminum, were formed after shaping a seawater subjected to spray test. No negative effects, especially in the area of deformation, were found.
  • Fig. 2 shows a modified embodiment of the device according to Fig. 1, wherein a tube can be deformed outwards.
  • the housing has a hollow cylindrical jacket 21 and a base plate 22. Opposite the jacket 21, an elastically deformable plate 23 is placed on the base plate 22, while a guide plate 25 rests on the latter.
  • a pipe piece 34 to be deformed to the outside is inserted in the bore 21a of the housing shell 21, a pipe piece 34 to be deformed to the outside is inserted.
  • the tube 34 can be pulled out of the bore 21a even after the deformation.
  • individual, possibly annular depressions could of course also be provided, in order to be able to limit the deformation in a more targeted manner.
  • these depressions would have to be made, for example, by additional ring inserts or the like. formed, which could be pulled out after deforming.
  • Elastic shaped pieces 18 and 20 and non-elastic intermediate pieces 26, 27 and 28 are arranged within the tube 34 in the same manner as in FIG. 1. These fittings and intermediate pieces are also designed in a ring shape in the example of FIG. 2.
  • a pull rod 41 is guided in its interior, which has a pressure at one end piece 19 has, which rests on the end face of the last intermediate piece 27.
  • a head 42 is fastened, which is supported on the guide plate 25 via a plate spring 24 and is clamped with this plate spring 24 between the guide plate 25 and the elastic plate 23.
  • the arrangement according to FIG. 2 can also be used, for example, in the housing 1 of FIG. 1 instead of the tool 8, 9. Then the guide plate 25 takes the place of the tool base 8, while the base plate 22 and the jacket 21 connect instead of the jacket 9.
  • the guide plate 25 transmits the force to the elastic shaped plate 23, which can deform in the housing only by the fact that it presses the head 42 to the left in the direction of the plate spring 24 and takes the pull rod 41 with it.
  • the pressure piece 19 is thus also pulled to the left against the base plate 22.
  • a pressure is thus exerted on the shaped pieces 18 and 20, which elastically deforms them outward.
  • the tube 34 is deformed outward in a ring-shaped manner at the corresponding points.
  • the plate spring 24 returns the tool to its basic position after the shaping process has ended.
  • the finished part ie the deformed tube 34, can thus be removed from the tool.
  • the deformation of a tube is used in each case.
  • the invention can also be used particularly advantageously in this case. Nevertheless, the principle of the invention is not limited to this. Rather, deformation can also be caused Perform flat or otherwise curved materials with square, rectangular or polygon profiles.
  • deformation of a flat plate for example, instead of the annular shaped pieces and intermediate pieces, correspondingly differently shaped, for example cuboid shaped shaped pieces and intermediate pieces would have to be arranged in corresponding channels.
  • the deformation process with appropriately modified tools can be used to deform different parts.
  • the pipe connection described can of course also be used with a wide variety of materials and for a wide variety of applications, for example for pipe connections in the field of hydraulics, pneumatics, heating and energy technology.
  • the same type of deformation can be used for hose connections for conducting air, liquid and gases in industry, automotive engineering, energy supply and in the home.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP19890109378 1988-05-25 1989-05-24 Procédé et dispositif pour déformer des produits comme profils creux, tubes etc. Withdrawn EP0343624A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883817707 DE3817707A1 (de) 1988-05-25 1988-05-25 Verfahren und vorrichtung zum verformen von material wie hohlprofilen, rohren usw.
DE3817707 1988-05-25

Publications (2)

Publication Number Publication Date
EP0343624A2 true EP0343624A2 (fr) 1989-11-29
EP0343624A3 EP0343624A3 (fr) 1990-10-31

Family

ID=6355067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109378 Withdrawn EP0343624A3 (fr) 1988-05-25 1989-05-24 Procédé et dispositif pour déformer des produits comme profils creux, tubes etc.

Country Status (2)

Country Link
EP (1) EP0343624A3 (fr)
DE (1) DE3817707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622132A1 (fr) * 1993-03-25 1994-11-02 UMFORMTECHNIK STADE GmbH Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122323A1 (de) * 1991-07-05 1993-01-14 Erbsloeh Julius & August Elastisches werkzeug zum verformen
DE9403549U1 (de) * 1994-02-28 1994-05-19 Christian Dunkel Gmbh Werkzeugbau, 12459 Berlin Rohr und Vorrichtung zur Umformung eines Rohrmantels

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811730A (en) * 1953-03-13 1957-11-05 Conrad R Vegren Method for resizing internally threaded rocket motor tubing
BE675303A (fr) * 1965-01-29 1966-07-18
FR2031527A1 (fr) * 1969-02-19 1970-11-20 Caterpillar Tractor Co
FR2293270A1 (fr) * 1974-12-03 1976-07-02 Springbok Appointments Prop Lt Procede et appareil pour la fabrication de montants comportant deux parties bulbeuses d'une seule piece
FR2335284A1 (fr) * 1975-12-19 1977-07-15 Medigue Raymond Procede de fabrication d'une jante pour automobile
JPS58173035A (ja) * 1982-04-02 1983-10-11 Hitachi Ltd 管端のフレア加工法
FR2591514A1 (fr) * 1985-12-12 1987-06-19 Tissot Eugene Procede de realisation de bossages annulaires sur un tuyau de descente d'eau, dispositif pour sa mise en oeuvre et tuyau obtenu

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2059812C3 (de) * 1970-12-04 1975-08-07 Etablissements Butin-Gillet, Pantin (Frankreich) Vorrichtung zum Querwellen von Rohren
DE2407226C3 (de) * 1974-02-15 1978-06-01 Benteler-Werke Ag Werk Neuhaus, 4794 Schloss Neuhaus Vorrichtung zur Herstellung von Rohrkörpern mit Querwellen
DE3044291A1 (de) * 1980-11-25 1982-06-24 Uni-Cardan Ag, 5200 Siegburg "verfahren und vorrichtung zum dauerhaften verbinden von umlaufenden teilen, wie wellenteile o.dgl.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811730A (en) * 1953-03-13 1957-11-05 Conrad R Vegren Method for resizing internally threaded rocket motor tubing
BE675303A (fr) * 1965-01-29 1966-07-18
FR2031527A1 (fr) * 1969-02-19 1970-11-20 Caterpillar Tractor Co
FR2293270A1 (fr) * 1974-12-03 1976-07-02 Springbok Appointments Prop Lt Procede et appareil pour la fabrication de montants comportant deux parties bulbeuses d'une seule piece
FR2335284A1 (fr) * 1975-12-19 1977-07-15 Medigue Raymond Procede de fabrication d'une jante pour automobile
JPS58173035A (ja) * 1982-04-02 1983-10-11 Hitachi Ltd 管端のフレア加工法
FR2591514A1 (fr) * 1985-12-12 1987-06-19 Tissot Eugene Procede de realisation de bossages annulaires sur un tuyau de descente d'eau, dispositif pour sa mise en oeuvre et tuyau obtenu

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 9 (M-268)[1446], 14. Januar 1984; & JP-A-58 173 035 (HITACHI SEISAKUSHO K.K.) 11-10-1983 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622132A1 (fr) * 1993-03-25 1994-11-02 UMFORMTECHNIK STADE GmbH Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide

Also Published As

Publication number Publication date
EP0343624A3 (fr) 1990-10-31
DE3817707A1 (de) 1989-11-30

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