EP0196523B1 - Radial press - Google Patents

Radial press Download PDF

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Publication number
EP0196523B1
EP0196523B1 EP86103462A EP86103462A EP0196523B1 EP 0196523 B1 EP0196523 B1 EP 0196523B1 EP 86103462 A EP86103462 A EP 86103462A EP 86103462 A EP86103462 A EP 86103462A EP 0196523 B1 EP0196523 B1 EP 0196523B1
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EP
European Patent Office
Prior art keywords
press
control body
axis
radial
abutment
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.)
Expired
Application number
EP86103462A
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German (de)
French (fr)
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EP0196523A2 (en
EP0196523A3 (en
Inventor
Peter Dipl.-Ing. Schröck
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Uniflex Hydraulik GmbH
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Schrock Peter Dipl-Ing
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Publication date
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Priority to AT86103462T priority Critical patent/ATE43802T1/en
Publication of EP0196523A2 publication Critical patent/EP0196523A2/en
Publication of EP0196523A3 publication Critical patent/EP0196523A3/en
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Publication of EP0196523B1 publication Critical patent/EP0196523B1/en
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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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit

Definitions

  • the invention relates to a radial press according to the preamble of patent claim 1.
  • “Rotationally symmetrical outer surfaces” are to be understood as meaning workpiece shapes with circular cross sections and cross sections in the form of regular polygons, as can be found, for example, in hexagonal profiles.
  • the workpiece outer surfaces can be straight, cambered (barrel-shaped) or stepped in the axial direction. Such workpiece surfaces can be taken into account by appropriate design of the press jaws.
  • a special field of application, for which the subject matter of the invention is preferably suitable, is the connection of hose fittings made of steel with hose lines and the production of so-called thimbles.
  • a radial press of the type described in the introduction is known from US Pat. No. 3,805,580, in which the drive device consists of two diametrically opposed hydraulic cylinders.
  • the press has a frame made of two end plates, which are connected to each other by four rigid tie rods.
  • a radial press according to the preamble of claim 1 is known, in which the hydraulic cylinders serve as a machine foundation, i. H. the press is set up on the free end faces of the cylinders, so that the installation surface underneath, the floor, prevents long and / or complicatedly shaped fittings from being pushed axially.
  • the entire design principle is tailored to the vertical orientation of the press axis with regard to the guidance of the parts which are movable relative to one another. Nevertheless, in the known solution, a special press jaw holder is absolutely necessary, which holds, centers and guides the press jaws.
  • the invention is therefore based on the object to improve a radial press according to the preamble of claim 1 in such a way that it has the largest possible free space both for the insertion of fittings with pipe elbows and for the processing of small dimensions and low weight directly behind the control body Fittings with elongated, long pipes and endless lines.
  • the measures according to the invention eliminate the separate press frame with the tie rods, as does the one end plate which connects the tie rods and supports the hydraulic cylinders.
  • the piston rods also take over the function of the tie rods, i. H. they are stressed in tension instead of pressure, and the function of guide elements for the control body.
  • the other hard drive is the abutment for the press jaws.
  • the abutment can be designed as a plate with pure radial guides for the press jaws and only serve as an axial stop for the press jaws, but it can also be mirror-symmetrical with respect to the at least one control surface to the control body, i. H. also generate radially inward force components with respect to the press jaws.
  • the press consists of fewer individual parts, has a lower weight and a shorter axial length with the same pressing force and size.
  • the press can also be modularly expanded by additional hydraulic drives without losing its advantages of free accessibility from the rear. In principle, it is sufficient to keep a single type or fewer types of appropriately dimensioned hydraulic drives. Details of the procedure for the construction of such a radial press are explained in more detail on the basis of the detailed description.
  • the piston rods serve as an extremely precise guide for the control body, and the hydraulic cylinders surrounding the pistons can be supported on the control body in a radially freely movable manner, so that a match of the axial guides between the cylindrical outer surface of the piston and the sealing surface of the cylinder is avoided.
  • the sealing effect is optimally guaranteed over a long period of time.
  • the subject of the invention has the advantage that an additional press jaw holder can be dispensed with because the mechanical guidance of the press jaws is brought about exclusively by the interaction between the abutment and the control body which is movable relative thereto and which constantly presses the press jaws also secures in the radial direction. This not only simplifies the construction of the press, but also enables it to be set up with a horizontal press axis while maintaining the simple construction.
  • the object of the invention fully solves the task, namely the processing of fittings with elbows as well as fittings with elongated, long pipes and endless lines.
  • control body consists of a regular polygonal plate, through the center of which the press axis runs, and if the piston rods of the hydraulic cylinders are guided through the control body in the region of the corners of the polygon.
  • the weight of the control body can be reduced accordingly.
  • the abutment and the control body each consist of a square plate with horizontally or vertically oriented narrow sides and two vertically oriented end faces and if the axes of the piston rods, which are diametrically opposite each other in pairs, each cut a diagonal line 0 1 or D 2 of the front of the control body.
  • FIG. 1 shows a vertical axial section through a complete radial press 1.
  • An abutment 3 which consists of a square plate with horizontally oriented narrow sides 4 and 5 and vertically oriented narrow sides 6 and 7, is fastened to a cladding 2 consisting of angled sheet metal parts (FIG. 2).
  • the abutment also has two vertically aligned, square faces 8 and 9, through the surface diagonals of which an axis A-A runs, which can be referred to as the press or system axis and with which the axis of the workpiece coincides during the pressing process.
  • abutment 3 there is also an insertion opening 10 which is coaxial with the axis A-A and through which a workpiece 11 (a preassembled hose fitting) indicated by dash-dotted lines can be inserted into the press.
  • the side on which the abutment 3 is located is the so-called “operating side” of the press.
  • the press jaws 12 have outer surfaces, each of which includes two control surfaces 14 and 15 with a smaller pitch and one control surface 16 with a larger pitch.
  • the control surface 16 is arranged between the control surfaces 14 and 15 and, in the present case, was practically reduced to a control edge with regard to its radial extent.
  • the pressing jaws 12 arranged in a circle around the axis A-A are surrounded by a control body 17, which likewise consists of a square plate with horizontally oriented narrow sides 18 and 19, vertically oriented narrow sides 20 and 21 and also vertically oriented end faces 22 and 23.
  • the contours of the abutment 3 and the control body 17 are congruent in the projection along the axis A-A.
  • the control body 17 has an inner side composed of pure rotation surfaces, the so-called control surfaces, namely two control surfaces 24 and 25 with a smaller pitch, which corresponds to the pitch of the control surfaces 14 and 15 of the press jaws, and (on the end face) a control surface 26 with a larger pitch, which interacts with the control surfaces 16 of the press jaws.
  • FIG. 1 shows below the axis A-A the pressing jaws 12 in their most open position and the control body 17 in its right end position.
  • the control surfaces 16 and 26 of greater incline first slide on one another, so that the pressing jaws are first moved radially inwards in the rapid idle stroke. Then come simultaneously and simultaneously the control surfaces 14 and 24 or 15 and 25 of smaller pitch with each other so that the press jaws are moved radially inwards in the slow power stroke until they have reached the end position shown in FIG the control body 17 has its left end position. The pressing process is finished in this position.
  • the pressing jaws are opened by the reverse direction of movement of the control body 17, the pressing jaws tracking the control surfaces by means of tangential compression springs 27 arranged between the individual pressing jaws (FIG. 3).
  • the hydraulic drive device consists of two hydraulically connected hydraulic cylinders 28 and 29, each with a piston 30 and a piston rod 31.
  • the axes A 1 and A 2 of these hydraulic cylinders or piston rods are arranged radially outside of all control surfaces of the control body 17 and are equidistant distributed over its circumference and aligned parallel to the axis AA.
  • the connecting link for the transmission of the reaction forces of the hydraulic cylinders 28 and 29 consists here of the piston rods 31, which have the function of tie rods.
  • the piston rods 31 are fastened at one end to the abutment 3 and penetrate the control body 17, which is equipped with slide bearings 32 at the penetration points.
  • the piston rods 31 are connected at their other, free ends to the piston 30, and the hydraulic cylinders 28 and 29 surrounding the pistons are supported against the control body 17 in the manner shown.
  • the hydraulic cylinders 28 and 29 are provided on their pressure sides with pressure medium connections 33 and 34, so that the hydraulic cylinders 28 and 29 can be moved together with the control body 17 in relation to the fixed pistons 30 in the direction of the axes A 1 and A 2 .
  • Figure 1 shows in the upper part that the pistons 30 are released during this movement by the hydraulic cylinders moving to the left.
  • pistons 30 are screwed to the piston rods 31 starting from their end face 35 facing away from the control body 17, and in each case by means of an Allen screw 36 which is screwed coaxially into the respective piston rod 31.
  • an Allen screw 36 which is screwed coaxially into the respective piston rod 31.
  • Corresponding radial and axial mating surfaces between piston 30 and piston rod 31 achieve an exact coaxial fit of the piston on the piston rod.
  • Analogous considerations apply to the connection on the other side of the piston rod 31 to the abutment 3 via a further Allen screw 37.
  • the entire radial press can be easily assembled and disassembled. Before the pistons 30 are assembled, the associated hydraulic cylinder is simply pushed onto the piston rod 31, its end wall 38, which is sealed off from the piston rod 31, being supported on the control body 17 in the manner shown.
  • compression springs 39 Between your abutment 3 and the hydraulic cylinders 28 and 29 there are compression springs 39, only a part of which is shown and which serve to return the control body 17 to the outer end position. However, it is possible to dispense with these compression springs if the single-acting hydraulic cylinders 28 and 29 shown in FIG. 2 are replaced by double-acting hydraulic cylinders 28 ', 29', as indicated by dash-dotted lines. In this case, the cylinders are firmly connected to the control body.
  • a micrometer 40 is also attached to the control body 17. whose stylus 41 can be adjusted by one revolution by a distance that corresponds to a radial pressing distance of one millimeter.
  • the stylus 41 cooperates with a microswitch 42 and thereby limits the axial path of the control body 17 or the final diameter of the workpiece 11.
  • control body 17 consists of a regular polygonal, namely square, plate, through the center of which the common axis AA of the workpiece 11 and the control surfaces. It can also be seen that the axes A 1 and A 2 of the piston rods 31 are guided through the control body 17 in the region of the corners of the polygon (square).
  • the two hydraulic cylinders 28 and 29 lie diametrically opposite each other on a diagonal line 0 1 at the same distance from the axis AA, so that a plane-parallel displacement of the control body 17 is ensured.
  • the hydraulic cylinders 28 and 29 are connected hydraulically in parallel in that their pressure medium connections 33 and 34 are connected via lines 43 and 44 to a T-piece 45, which has a pressure medium connection 46 for connection to a hydraulic unit, not shown.
  • the control body 17 also has a second diagonal line D 2 .
  • the radial press has four hydraulic cylinders 28, 29, 47 and 48 which are diametrically opposed in pairs with respect to the axis AA.
  • the distance “s” between the outer surfaces of two hydraulic cylinders directly adjacent in the circumferential direction is approximately 0.8 times the value of the outer diameter “d of the hydraulic cylinders. This ensures that a correspondingly bulky workpiece 11, which may have, for example, a pipe bend (FIG. 1), can be located between two hydraulic cylinders, so that the hydraulic cylinders do not hinder the placement of such a pipe bend in the press.
  • the abutment 3 is fastened to the coplanar legs 49 and 50 of two mirror-symmetrically arranged, L-shaped cladding parts 51 and 52, the parallel legs 53 and 54 of which are guided back over the control body 17 .
  • the lower edges of the trim parts 51 and 52 are connected with continuous mounting flanges 55 and 56. From Figure 4 it also follows that between the coplanar legs 49 and 50 above and below the insertion opening 10 there is a further covering part 57 and 58, which is also connected to the abutment 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Diaphragms And Bellows (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A radial press having a plurality of dies concentrically arranged about an axis of the press is described. In particular, the dies are movable in a radial direction relative to the press axis by means of a cam member axially displaced relative to a pressure pad by an hydraulic drive mechanism. The drive mechanism having a piston, piston rod and bearings is attached to a pressure pad and to the cam member in a manner providing a large clearance space accommodating a variety of workpieces in the rear portion of the press. During the pressing operation, the piston rods are stressed in tension eliminating the need for an end plate and tension rods of prior art radial presses.

Description

Die Erfindung betrifft eine Radialpresse nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a radial press according to the preamble of patent claim 1.

Unter « rotationssymmetrischen Außenflächen » sind Werkstückformen mit Kreisquerschnitten und Querschnitten in Form regelmäßiger Polygone zu verstehen, wie sie beispielsweise bei Sechskantprofilen zu finden sind. Die Werkstückaußenflächen können dabei in Achsrichtung geradlinig, bombiert (tonnenförmig) oder abgestuft verlaufen. Derartigen Werkstückoberflächen kann durch eine entsprechende Ausbildung der Preßbacken Rechnung getragen werden. Ein spezielles Anwendungsgebiet, für den der Erfindungsgegenstand bevorzugt geeignet ist, ist die Verbindung von aus Stahl bestehenden Schlaucharmaturen mit Schlauchleitungen sowie die Herstellung von sogenannten Seilkauschen.“Rotationally symmetrical outer surfaces” are to be understood as meaning workpiece shapes with circular cross sections and cross sections in the form of regular polygons, as can be found, for example, in hexagonal profiles. The workpiece outer surfaces can be straight, cambered (barrel-shaped) or stepped in the axial direction. Such workpiece surfaces can be taken into account by appropriate design of the press jaws. A special field of application, for which the subject matter of the invention is preferably suitable, is the connection of hose fittings made of steel with hose lines and the production of so-called thimbles.

Durch die US-A 3 805 580 ist eine Radialpresse der eingangs beschriebenen Gattung bekannt, bei der die Antriebseinrichtung aus zwei diametral gegenüberliegenden Hydraulikzylindern besteht. Die Presse besitzt ein Gestell aus zwei Endplatten, die durch vier starre Zuganker miteinander verbunden sind. Zwischen jeweils zwei Zugankem befindet sich jeweils ein Hydraulikzylinder, und zwischen jeweils zwei anderen Zugankem befinden sich seitliche Öffnungen zum Hindurchstecken von gekrümmten Armaturen. Wollte man die Anzahl der Zylinder ohne Vergrößerung der radialen Ausladung der Presse verdoppeln, so würden die beiden seitlichen Öffnungen versperrt, und wegen der unteren Endplatte ist die Rückseite der Preßbacken auch von dort her nicht zugänglich. Zu den vier Zugankem kommen noch zwei auf Druck beanspruchte Kolbenstangen hinzu, die auf einen Steuerkörper für die Preßbacken einwirken, durch den die Zuganker mit Radialspiel hindurchgeführt sind. Die Presse baut wegen der Vielzahl von Teilen schwer und hat eine große axiale Länge.A radial press of the type described in the introduction is known from US Pat. No. 3,805,580, in which the drive device consists of two diametrically opposed hydraulic cylinders. The press has a frame made of two end plates, which are connected to each other by four rigid tie rods. There is a hydraulic cylinder between each two tie rods, and between two other tie rods there are lateral openings for inserting curved fittings. If one wanted to double the number of cylinders without increasing the radial projection of the press, the two side openings would be blocked, and because of the lower end plate, the back of the press jaws is also not accessible from there. In addition to the four tie rods, there are two piston rods that are subjected to pressure and act on a control body for the press jaws, through which the tie rods are guided with radial play. The press is heavy due to the large number of parts and has a large axial length.

Durch die FR-A-2 341 093 ist eine Radialpresse nach dem Oberbegriff des Patentanspruchs 1 bekannt, bei der die Hydraulikzylinder als Maschinenfundament dienen, d. h. die Presse wird auf den freien Stirnseiten der Zylinder aufgestellt, so daß die darunter befindliche Aufstellfläche, der Boden, das axiale Durchschieben langer und/oder kompliziert geformter Armaturen verhindert. Außerdem ist das gesamte Konstruktionsprinzip hinsichtlich der Führung der relativ zueinander beweglichen Teile auf eine vertikale Ausrichtung der Pressenachse zugeschnitten. Trotzdem ist bei der bekannten Lösung unbedingt ein besonderer Preßbackenhalter erforderlich, der die Preßbacken hält, zentriert und führt. Würde man bei einer Anordnung dieser Presse mit waagrechter Pressenachse den Preßbackenhalter mit seiner Auflageplatte verschrauben, so entstünde eine mechanische Überbestimmung des Systems, die bei ungünstiger Toleranzlage der Einzelteile zu Klemmungen und/oder ungleichmäßiger Beanspruchung der Bauteile führen kann. Schließlich bewegt sich bei der bekannten Presse der obere Steuerkörper beim Arbeitshub der Presse von der Bedienungsperson weg nach unten, so daß die Bedienungsperson beim Einlegen der Werkstücke keine feste Bezugsfläche vor sich hat.From FR-A-2 341 093 a radial press according to the preamble of claim 1 is known, in which the hydraulic cylinders serve as a machine foundation, i. H. the press is set up on the free end faces of the cylinders, so that the installation surface underneath, the floor, prevents long and / or complicatedly shaped fittings from being pushed axially. In addition, the entire design principle is tailored to the vertical orientation of the press axis with regard to the guidance of the parts which are movable relative to one another. Nevertheless, in the known solution, a special press jaw holder is absolutely necessary, which holds, centers and guides the press jaws. If one arranged the press jaw holder with its support plate in an arrangement of this press with a horizontal press axis, this would result in mechanical overdetermination of the system, which can lead to pinching and / or uneven stressing of the components if the individual parts are in an unfavorable tolerance position. Finally, in the known press, the upper control body moves downward from the operator during the working stroke of the press, so that the operator has no fixed reference surface in front of him when inserting the workpieces.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Radialpresse nach dem Oberbegriff des Patentanspruchs 1 dahingehend zu verbessern, daß sie bei kleinen Abmessungen und geringem Gewicht unmittelbar hinter dem Steuerkörper einen möglichst großen Freiraum sowohl für das Einlegen von Armaturen mit Rohrkrümmern als auch für das Verarbeiten von Armaturen mit gestreckten, langen Rohren und Endlosleitungen besitzt.The invention is therefore based on the object to improve a radial press according to the preamble of claim 1 in such a way that it has the largest possible free space both for the insertion of fittings with pipe elbows and for the processing of small dimensions and low weight directly behind the control body Fittings with elongated, long pipes and endless lines.

Die Lösung der gestellten Aufgabe erfolgt bei der Radialpresse nach dem Oberbegriff des Patentanspruchs 1 erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 aufgeführten Merkmale.The object is achieved in the radial press according to the preamble of claim 1 according to the invention by the features listed in the characterizing part of claim 1.

Durch die erfindungsgemäßen Maßnahmen gerät gegenüber der US-A-3 805 580 das gesonderte Pressengestell mit den Zugankern in Fortfall, desgleichen die eine, die Zuganker miteinander verbindende und die Hydraulikzylinder tragende Endplatte. Die Kolbenstangen übemehmen zusätzlich die Funktion der Zuganker, d. h. sie werden auf Zug statt auf Druck beansprucht, sowie die Funktion von Führungselementen für den Steuerkörper. Die andere Festplatte ist dabei das Widerlager für die Preßbacken. Das Widerlager kann dabei als Platte mit reinen Radialführungen für die Preßbacken ausgebildet sein und lediglich als axialer Anschlag für die Preßbacken dienen, es kann aber auch hinsichtlich der mindestens einen Steuerfläche zum Steuerkörper spiegelsymmetrisch ausgebildet sein, d. h. gleichfalls radial einwärts gerichtete Kraftkomponenten in Bezug auf die Preßbacken erzeugen.Compared to US Pat. No. 3,805,580, the measures according to the invention eliminate the separate press frame with the tie rods, as does the one end plate which connects the tie rods and supports the hydraulic cylinders. The piston rods also take over the function of the tie rods, i. H. they are stressed in tension instead of pressure, and the function of guide elements for the control body. The other hard drive is the abutment for the press jaws. The abutment can be designed as a plate with pure radial guides for the press jaws and only serve as an axial stop for the press jaws, but it can also be mirror-symmetrical with respect to the at least one control surface to the control body, i. H. also generate radially inward force components with respect to the press jaws.

Herbeizuführen ist im wesentlichen nur eine axiale Relativbewegung zwischen Widerlager und Steuerkörper, und die auf Zug beanspruchten Kolbenstangen sind jenseits des Steuerkörpers fliegend angeordnet, so daß die Rück- bzw. Hinterseite der Presse vollständig offen ist und das Verarbeiten von Endlosleitungen und von solchen mit sehr langen Armaturen ermöglicht.It is essentially only an axial relative movement between the abutment and the control body, and the piston rods that are subjected to tensile stress are arranged on the other side of the control body so that the rear or rear side of the press is completely open and the processing of endless lines and those with very long ones Fittings allowed.

Die Presse besteht aus weniger Einzelteilen, hat bei gleicher Preßkraft und Größe ein geringeres Gewicht und eine kürzere axiale Baulänge.The press consists of fewer individual parts, has a lower weight and a shorter axial length with the same pressing force and size.

Die Presse läßt sich auch baukastenmäßig durch zusätzliche Hydraulikantriebe erweitern, ohne daß ihre Vorteile der freien Zugänglichkeit von der Rückseite her verloren gehen. Es genügt im Prinzip die Vorratshaltung eines einzigen Typs oder weniger Typen von entsprechend dimensionierten Hydraulikantrieben. Einzelheiten des Vorgehens beim Aufbau einer solchen Radialpresse werden anhand der Detailbeschreibung noch näher erläutert.The press can also be modularly expanded by additional hydraulic drives without losing its advantages of free accessibility from the rear. In principle, it is sufficient to keep a single type or fewer types of appropriately dimensioned hydraulic drives. Details of the procedure for the construction of such a radial press are explained in more detail on the basis of the detailed description.

Vor allem aber wird auch bei einer Mehrfachanordnung einzelner Hydraulikzylinder, z. B. bei vier Hydraulikzylindern, der Freiraum für das Manipulieren kompliziert geformter (gekrümmter) und beliebig langer Werkstücke auf der Rückseite der Presse vergrößert. Dies gilt für gekrümmte Werkstücke besonders dann, wenn der Abstand « S » zwischen den Außenflächen zweier in Umfangsrichtung unmittelbar nebeneinander liegender Hydraulikzylinder zwischen dem 0,6- bis 1,2-Fachen des Außendurchmessers der Hydraulikzylinder liegt. Hierbei versteht sich natürlich, daß die Hydraulikzylinder soweit radial auswärts angeordnet sind, daß sie nicht in das Profil der Preßbacken in ihrer am weitesten geöffneten Stellung hineinragen.But above all, it is also with a multiple order of individual hydraulic cylinders, e.g. B. with four hydraulic cylinders, the space for manipulating complicated shaped (curved) and any length workpieces on the back of the press increased. This applies in particular to curved workpieces if the distance “S” between the outer surfaces of two hydraulic cylinders lying directly next to one another in the circumferential direction is between 0.6 and 1.2 times the outer diameter of the hydraulic cylinders. It goes without saying that the hydraulic cylinders are arranged radially outward so far that they do not protrude into the profile of the press jaws in their most open position.

Beim Erfindungsgegenstand dienen die Kolbenstangen als äußerst exakte Führung für den Steuerkörper, und die die Kolben umgebenden Hydraulikzylinder können sich radial frei beweglich auf dem Steuerkörper abstützen, so daß eine Übereinstimmung der axialen Führungen zwischen der zylindrischen Außenfläche der Kolben und der Dichtfläche der Zylinder vermieden wird. Dadurch wird die Abdichtwirkung über lange Zeit optimal gewährleistet.In the subject matter of the invention, the piston rods serve as an extremely precise guide for the control body, and the hydraulic cylinders surrounding the pistons can be supported on the control body in a radially freely movable manner, so that a match of the axial guides between the cylindrical outer surface of the piston and the sealing surface of the cylinder is avoided. The sealing effect is optimally guaranteed over a long period of time.

Gegenüber der FR-A-2 341 093 hat der Erfindungsgegenstand den Vorteil, daß auf einen zusätzlichen Preßbackenhalter verzichtet werden kann, weil die mechanische Führung der Preßbacken ausschließlich durch das Zusammenwirken zwischen dem Widerlager und dem relativ hierzu beweglichen Steuerkörper bewirkt wird, der die Preßbacken ständig auch in radialer Richtung sichert. Dadurch wird nicht nur die Bauweise der Presse vereinfacht, sondern auch deren Aufstellung mit horizontaler Pressenachse unter Beibehaltung der einfachen Bauweise überhaupt erst ermöglicht.Compared to FR-A-2 341 093, the subject of the invention has the advantage that an additional press jaw holder can be dispensed with because the mechanical guidance of the press jaws is brought about exclusively by the interaction between the abutment and the control body which is movable relative thereto and which constantly presses the press jaws also secures in the radial direction. This not only simplifies the construction of the press, but also enables it to be set up with a horizontal press axis while maintaining the simple construction.

Das der Bedienungsperson zugekehrte Wiederlage bleibt durch seine Befestigung an Verkleidungsteilen, die mit Aufstellflanschen versehen sind, ständig in der gleichen relativen Lage zur Bedienungsperson, so daß diese eine feste Bezugsfläche vor sich hat. Vor allem aber löst der Erfindungsgegenstand in vollem Umfange die gestellte Aufgabe, nämlich sowohl die Verarbeitung von Armaturen mit Rohrkrümmern als auch von Armaturen mit gestreckten, langen Rohren und Endlosleitungen.Due to its attachment to cladding parts which are provided with mounting flanges, the restoration facing the operator always remains in the same position relative to the operator, so that the operator has a fixed reference surface in front of him. Above all, however, the object of the invention fully solves the task, namely the processing of fittings with elbows as well as fittings with elongated, long pipes and endless lines.

Es ist wiederum besonders vorteilhaft, wenn der Steuerkörper aus einer regelmäßigen polygonalen Platte besteht, durch deren Zentrum die Pressenachse verläuft, und wenn die Kolbenstangen der Hydraulikzylinder im Bereich der Ecken des Polygons durch den Steuerkörper hindurchgeführt sind.It is again particularly advantageous if the control body consists of a regular polygonal plate, through the center of which the press axis runs, and if the piston rods of the hydraulic cylinders are guided through the control body in the region of the corners of the polygon.

Auf die angegebene Weise kann das Gewicht des Steuerkörpers entsprechend reduziert werden.In the manner indicated, the weight of the control body can be reduced accordingly.

Im Zuge einer wiederum weiteren Ausgestaltung der Erfindung ist es von besonderem Vorteil, wenn das Widerlager und der Steuerkörper aus je einer quadratischen Platte mit horizontal bzw. vertikal ausgerichteten Schmalseiten und je zwei vertikal ausgerichteten Stirnseiten bestehen und wenn die Achsen der einander paarweise diametral gegenüberliegenden Kolbenstangen jeweils eine Diagonallinie 01 bzw. D2 der Stirnseite des Steuerkörpers schneiden.In the course of yet another embodiment of the invention, it is particularly advantageous if the abutment and the control body each consist of a square plate with horizontally or vertically oriented narrow sides and two vertically oriented end faces and if the axes of the piston rods, which are diametrically opposite each other in pairs, each cut a diagonal line 0 1 or D 2 of the front of the control body.

Unabhängig davon, ob die Radialpresse nun mit zwei doppelt- oder einfachwirkenden Hydraulikzylindem ausgestattet ist, deren Kolbenstangen - diametral gegenüberliegend - auf einer Diagonalen angeordnet sind, oder ob die Radialpresse mit vier doppelt- oder einfachwirkenden Hydraulikzylindem ausgestattet ist, deren Kolbenstangen paarweise diametral gegenüberliegend auf zwei sich rechtwinklig schneidenden Diagonalen angeordnet sind, ergibt sich eine nach Höhe und Breite der gesamten Presse außerordentlich raumsparende Bauweise.Regardless of whether the radial press is now equipped with two double- or single-acting hydraulic cylinders, the piston rods of which - diametrically opposite - are arranged on a diagonal, or whether the radial press is equipped with four double- or single-acting hydraulic cylinders, the piston rods of which are diametrically opposed in pairs on two diagonals intersecting at right angles result in an extremely space-saving design in terms of height and width of the entire press.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes ergeben sich aus den übrigen Unteransprüchen.Further advantageous embodiments of the subject matter of the invention emerge from the remaining subclaims.

Ein Ausführungsbeispiel der erfindungsgemäßen Radialpresse wird nachstehend anhand der Figuren 1 bis 4 näher erläutert.An embodiment of the radial press according to the invention is explained below with reference to Figures 1 to 4.

Es zeigen :

  • Figur 1 einen vertikalen Axialschnitt durch die Radialpresse,
  • Figur 2 einen horizontalen Schnitt durch die Radialpresse nach Figur 1 entlang der Achse eines Hydraulikantriebs,
  • Figur 3 eine Rückwärtsansicht der Radialpresse nach den Figuren 1 und 2 und
  • Figur 4 eine Vorderansicht der vollständig verkleideten Radialpresse nach Figur 3.
Show it :
  • FIG. 1 shows a vertical axial section through the radial press,
  • FIG. 2 shows a horizontal section through the radial press according to FIG. 1 along the axis of a hydraulic drive,
  • Figure 3 is a rear view of the radial press of Figures 1 and 2 and
  • FIG. 4 shows a front view of the completely covered radial press according to FIG. 3.

In Figur 1 ist ein vertikaler Axialschnitt durch eine vollständige Radialpresse 1 dargestellt. An einer aus abgewinkelten Blechteilen bestehenden Verkleidung 2 ist ein Widerlager 3 befestigt, das aus einer quadratischen Platte mit horizontal ausgerichteten Schmalseiten 4 und 5 und vertikal ausgerichteten Schmalseiten 6 und 7 besteht (Figur 2). Das Widerlager besitzt weiterhin zwei Vertikal ausgerichtete, quadratische Stirnseiten 8 und 9, durch deren Flächendiagonalen hindurch eine Achse A-A verläuft, die als Pressen- oder Systemachse bezeichnet werden kann und mit der auch die Achse des Werkstücks beim Preßvorgang zusammenfällt. In dem Widerlager 3 ist weiterhin eine zur Achse A-A koaxiale Einführungsöffnung 10 vorgesehen, durch die ein strichpunktiert angedeutetes Werkstück 11 (eine vormontierte Schlaucharmatur) in die Presse einführbar ist. Die Seite, auf der sich das Widerlager 3 befindet, ist die sogenannte « Bedienungsseite » der Presse.FIG. 1 shows a vertical axial section through a complete radial press 1. An abutment 3, which consists of a square plate with horizontally oriented narrow sides 4 and 5 and vertically oriented narrow sides 6 and 7, is fastened to a cladding 2 consisting of angled sheet metal parts (FIG. 2). The abutment also has two vertically aligned, square faces 8 and 9, through the surface diagonals of which an axis A-A runs, which can be referred to as the press or system axis and with which the axis of the workpiece coincides during the pressing process. In the abutment 3 there is also an insertion opening 10 which is coaxial with the axis A-A and through which a workpiece 11 (a preassembled hose fitting) indicated by dash-dotted lines can be inserted into the press. The side on which the abutment 3 is located is the so-called “operating side” of the press.

Gegen das Widerlager 3 stützen sich in axialer Richtung acht' Preßbacken 12 ab, die auf den Umfang der Einführungsöffnung 10 äquidistant verteilt und in radialer Richtung beweglich sind. Es ist dabei möglich, die Preßbacken im Widedager 3 mittels radialer Schwalbenschwanzführungen zu führen, die zum Stande der Technik gehören und daher der Einfachheit halber nicht dargestellt sind. Die Preßbacken sind in der Regel noch mit sogenannten Backenaufsätzen 13 versehen, deren auf die Achse A-A ausgerichtete Oberflächen der endgültigen Werkstückgeometrie angepaßt sind (Figur 3).Against the abutment 3, eight 'press jaws 12 are supported in the axial direction, which are distributed equidistantly over the circumference of the insertion opening 10 and are movable in the radial direction. It is possible to guide the press jaws in the widenager 3 by means of radial dovetail guides which belong to the prior art and are therefore not shown for the sake of simplicity. The press jaws are usually also provided with so-called jaw attachments 13, the surfaces of which are aligned with the axis AA of the final workpiece geometry are fit (Figure 3).

Die Preßbacken 12 besitzen Außenflächen, zu denen jeweils zwei Steuerflächen 14 und 15 kleinerer Steigung und jeweils eine Steuerfläche 16 größerer Steigung gehören. Die Steuerfläche 16 ist dabei zwischen den Steuerflächen 14 und 15 angeordnet und wurde im vorliegenden Fall hinsichtlich ihrer radialen Ausdehnung praktisch zu einer Steuerkante reduziert.The press jaws 12 have outer surfaces, each of which includes two control surfaces 14 and 15 with a smaller pitch and one control surface 16 with a larger pitch. The control surface 16 is arranged between the control surfaces 14 and 15 and, in the present case, was practically reduced to a control edge with regard to its radial extent.

Die im Kreis um die Achse A-A angeordneten .Preßbacken 12 sind von einem Steuerkörper 17 umgeben, der gleichfalls aus einer quadratischen Platte mit horizontal ausgerichteten Schmalseiten 18 und 19, vertikal ausgerichteten Schmalseiten 20 und 21 sowie gleichfalls vertikal ausgerichteten Stirnseiten 22 und 23 besteht. Die Umrisse von Widerlager 3 und Steuerkörper 17 sind in der Projektion entlang der Achse A-A kongruent.The pressing jaws 12 arranged in a circle around the axis A-A are surrounded by a control body 17, which likewise consists of a square plate with horizontally oriented narrow sides 18 and 19, vertically oriented narrow sides 20 and 21 and also vertically oriented end faces 22 and 23. The contours of the abutment 3 and the control body 17 are congruent in the projection along the axis A-A.

Der Steuerkörper 17 besitzt eine aus reinen Rotationsflächen, den sogenannten Steuerflächen, zusammengesetzte Innenseite, und zwar zwei Steuerflächen 24 und 25 kleinerer Steigung, die der Steigung der Steuerflächen 14 und 15 der Preßbacken entspricht, und (an der Stirnseite) eine Steuerfläche 26 größerer Steigung, die mit den Steuerflächen 16 der Preßbacken zusammenwirkt.The control body 17 has an inner side composed of pure rotation surfaces, the so-called control surfaces, namely two control surfaces 24 and 25 with a smaller pitch, which corresponds to the pitch of the control surfaces 14 and 15 of the press jaws, and (on the end face) a control surface 26 with a larger pitch, which interacts with the control surfaces 16 of the press jaws.

Die radiale Verschiebung der Preßbacken 12 wird durch eine axiale Verschiebung des Steuerkörpers 17 bewirkt : Figur 1 zeigt unterhalb der Achse A-A die Preßbacken 12 in ihrer am weitesten geöffneten Stellung und den Steuerkörper 17 in seiner rechten Endstellung. Sobald der Steuerkörper 17 mittels der in den Figuren 2 und 3 noch näher erläuterten hydraulischen Antriebseinrichtung von rechts nach links bewegt wird, gleiten zunächst die Steuerflächen 16 und 26 größerer Steigung aufeinander, so daß die Preßbacken zuerst im schnellen Leerhub radial einwärts bewegt werden. Sodann kommen nachfolgend und gleichzeitig die Steuerflächen 14 und 24 bzw. 15 und 25 kleinerer Steigung miteinander in Eingriff, so daß die Preßbacken im langsamen Krafthub radial einwärts bewegt werden, bis sie die in Figur 1 oberhalb der Achse A-A gezeigte Endstellung erreicht haben, in der auch der Steuerkörper 17 seine linke Endstellung besitzt. Der Preßvorgang ist in dieser Stellung beendet.The radial displacement of the pressing jaws 12 is caused by an axial displacement of the control body 17: Figure 1 shows below the axis A-A the pressing jaws 12 in their most open position and the control body 17 in its right end position. As soon as the control body 17 is moved from right to left by means of the hydraulic drive device, which will be explained in greater detail in FIGS. 2 and 3, the control surfaces 16 and 26 of greater incline first slide on one another, so that the pressing jaws are first moved radially inwards in the rapid idle stroke. Then come simultaneously and simultaneously the control surfaces 14 and 24 or 15 and 25 of smaller pitch with each other so that the press jaws are moved radially inwards in the slow power stroke until they have reached the end position shown in FIG the control body 17 has its left end position. The pressing process is finished in this position.

Das Öffnen der Preßbacken erfolgt durch die umgekehrte Bewegungsrichtung des Steuerkörpers 17, wobei die Preßbacken den Steuerflächen durch tangentiale, zwischen den einzelnen Preßbacken angeordnete Druckfedem 27 nachgeführt werden (Figur 3)The pressing jaws are opened by the reverse direction of movement of the control body 17, the pressing jaws tracking the control surfaces by means of tangential compression springs 27 arranged between the individual pressing jaws (FIG. 3).

Gemäß Figur 2 besteht die hydraulische Antriebseinrichtung aus zwei hydraulisch parallel geschalteten Hydraulikzylindern 28 und 29 mit je einem Kolben 30 und einer Kolbenstange 31. Die Achsen A1 und A2 dieser Hydraulikzylinder bzw. Kolbenstangen sind radial außerhalb sämtlicher Steuerflächen des Steuerkörpers 17 angeordnet und sind äquidistant auf dessen Umfang verteilt und parallel zur Achse A-A ausgerichtet. Das Verbindungsglied für die Übertragung der Reaktionskräfte der Hydraulikzylinder 28 und 29 besteht hierbei aus den Kolbenstangen 31, die die Funktion von Zugankern haben.According to FIG. 2, the hydraulic drive device consists of two hydraulically connected hydraulic cylinders 28 and 29, each with a piston 30 and a piston rod 31. The axes A 1 and A 2 of these hydraulic cylinders or piston rods are arranged radially outside of all control surfaces of the control body 17 and are equidistant distributed over its circumference and aligned parallel to the axis AA. The connecting link for the transmission of the reaction forces of the hydraulic cylinders 28 and 29 consists here of the piston rods 31, which have the function of tie rods.

Die Kolbenstangen 31 sind mit ihrem einen Ende am Widerlager 3 befestigt und durchdringen den Steuerkörper 17, der an den Durchdringungsstellen mit Gleitlagern 32 ausgestattet ist. Die Kolbenstangen 31 sind an ihren anderen, freien Enden mit dem Kolben 30 verbunden, und die die Kolben umgebenden Hydraulikzylinder 28 bzw. 29 stützen sich in der gezeigten Weise gegen den Steuerkörper 17 ab.The piston rods 31 are fastened at one end to the abutment 3 and penetrate the control body 17, which is equipped with slide bearings 32 at the penetration points. The piston rods 31 are connected at their other, free ends to the piston 30, and the hydraulic cylinders 28 and 29 surrounding the pistons are supported against the control body 17 in the manner shown.

Die Hydraulikzylinder 28 bzw. 29 sind auf ihren Druckseiten mit Druckmittelanschlüssen 33 und 34 versehen, so daß die Hydraulikzylinder 28 und 29 gegenüber den feststehenden Kolben 30 in Richtung der Achsen A1 bzw. A2 zusammen mit dem Steuerkörper 17 verschoben werden können. Figur 1 zeigt im oberen Teil, daß die Kolben 30 bei dieser Bewegung von den nach links wandernden Hydraulikzylindern freigegeben werden.The hydraulic cylinders 28 and 29 are provided on their pressure sides with pressure medium connections 33 and 34, so that the hydraulic cylinders 28 and 29 can be moved together with the control body 17 in relation to the fixed pistons 30 in the direction of the axes A 1 and A 2 . Figure 1 shows in the upper part that the pistons 30 are released during this movement by the hydraulic cylinders moving to the left.

Aus Figur 2 geht weiterhin hervor, daß die Kolben 30 von ihrer dem Steuerkörper 17 abgewandten Stirnseite 35 ausgehend mit den Kolbenstangen 31 verschraubt sind, und zwar mittels jeweils einer Inbus-Schraube 36, die koaxial in die jeweilige Kolbenstange 31 eingeschraubt ist. Durch entsprechende radiale und axiale Passflächen zwischen Kolben 30 und Kolbenstange 31 wird ein exakter koaxialer Sitz des Kolbens auf der Kolbenstange erzielt. Analoge Überlegungen gelten für die jenseitige Verbindung der Kolbenstange 31 mit dem Widerlager 3 über eine weitere Inbus-Schraube 37. Auf die gezeigte Weise ist eine leichte Montage und Demontage der gesamten Radialpresse durchführbar. Vor der Montage der Kolben 30 wird ganz einfach der jeweils zugehörige Hydraulikzylinder auf die Kolbenstange 31 aufgeschoben, wobei sich seine gegenüber der Kolbenstange 31 abgedichtete Stirnwand 38 auf dem Steuerkörper 17 in der gezeigten Weise abstützt.From FIG. 2 it can further be seen that the pistons 30 are screwed to the piston rods 31 starting from their end face 35 facing away from the control body 17, and in each case by means of an Allen screw 36 which is screwed coaxially into the respective piston rod 31. Corresponding radial and axial mating surfaces between piston 30 and piston rod 31 achieve an exact coaxial fit of the piston on the piston rod. Analogous considerations apply to the connection on the other side of the piston rod 31 to the abutment 3 via a further Allen screw 37. In the manner shown, the entire radial press can be easily assembled and disassembled. Before the pistons 30 are assembled, the associated hydraulic cylinder is simply pushed onto the piston rod 31, its end wall 38, which is sealed off from the piston rod 31, being supported on the control body 17 in the manner shown.

Zwischen dein Widerlager 3 und den Hydraulikzylindern 28 und 29 befinden sich noch Druckfedem 39, von denen nur ein Teil gezeigt ist und die zur Rückführung des Steuerkörpers 17 in die äußere Endstellung dienen. Es ist jedoch möglich, auf diese Druckfedem zu verzichten, wenn die in Figur 2 gezeigten einfach-wirkenden Hydraulikzylinder 28 und 29 durch doppeltwirkende Hydraulik-zylinder 28', 29' ersetzt werden, wie dies durch strichpunktierte Linien angedeutet ist. In diesem Fall sind die Zylinder fest mit dem Steuerkörper verbunden.Between your abutment 3 and the hydraulic cylinders 28 and 29 there are compression springs 39, only a part of which is shown and which serve to return the control body 17 to the outer end position. However, it is possible to dispense with these compression springs if the single-acting hydraulic cylinders 28 and 29 shown in FIG. 2 are replaced by double-acting hydraulic cylinders 28 ', 29', as indicated by dash-dotted lines. In this case, the cylinders are firmly connected to the control body.

Am Steuerkörper 17 ist noch ein Mikrometer 40 befestigt. dessen Taststift 41 durch eine Umdrehung um einen Weg verstellt werden kann, der einem radialen Preßweg von einem Millimeter entspricht. Der Taststift 41 wirkt dabei mit einem Mikroschalter 42 zusammen, und begrenzt dadurch den axialen Weg des Steuerkörpers 17 bzw. den Enddurchmesser des Werkstücks 11.A micrometer 40 is also attached to the control body 17. whose stylus 41 can be adjusted by one revolution by a distance that corresponds to a radial pressing distance of one millimeter. The stylus 41 cooperates with a microswitch 42 and thereby limits the axial path of the control body 17 or the final diameter of the workpiece 11.

Aus Figur 3 ist zusätzlich zu ersehen, daß der Steuerkörper 17 aus einer regelmäßigen polygonalen, nämlich quadratischen, Platte besteht, durch deren Zentrum die gemeinsame Achse A-A des Werkstücks 11 und der Steuerflächen hindurchgeht. Es ist weiterhin zu erkennen, daß die Achsen A1 und A2 der Kolbenstangen 31 im Bereich der Ecken des Polygons (Quadrats) durch den Steuerkörper 17 hindurchgeführt sind. Die zwei Hydraulikzylinder 28 und 29 liegen sich auf einer Diagonallinie 01 diametral im gleichen Abstand zur Achse A-A gegenüber, so daß eine planparallele Verschiebung des Steuerkörpers 17 gewährleistet ist. Die Hydraulikzylinder 28 und 29 sind dadurch hydraulisch parallel geschaltet, daß ihre Druckmittelanschlüsse 33 und 34 über Leitungen 43 und 44 mit einem T-Stück 45 verbunden sind, das einen Druckmittelanschluß 46 für die Verbindung mit einem nicht gezeigten HydraulikAggregat aufweist.From Figure 3 it can also be seen that the control body 17 consists of a regular polygonal, namely square, plate, through the center of which the common axis AA of the workpiece 11 and the control surfaces. It can also be seen that the axes A 1 and A 2 of the piston rods 31 are guided through the control body 17 in the region of the corners of the polygon (square). The two hydraulic cylinders 28 and 29 lie diametrically opposite each other on a diagonal line 0 1 at the same distance from the axis AA, so that a plane-parallel displacement of the control body 17 is ensured. The hydraulic cylinders 28 and 29 are connected hydraulically in parallel in that their pressure medium connections 33 and 34 are connected via lines 43 and 44 to a T-piece 45, which has a pressure medium connection 46 for connection to a hydraulic unit, not shown.

Der Steuerkörper 17 besitzt noch eine zweite Diagonallinie D2. Sie kann im Bereich ihrer auf der Diagonallinie D2 liegenden Ecken mit zwei weiteren Hydraulikzylindern 47 und 48 bestückt werden, die nur strichpunktiert angedeutet sind und deren Achsen mit A3 und A4 bezeichnet sind. In diesem Falle besitzt die Radialpresse vier Hydraulikzylinder 28, 29, 47 und 48, die sich in Bezug auf die Achse A-A paarweise diametral gegenüberliegen. Dabei beträgt der Abstand « s » zwischen den Außenflächen zweier in Umfangsrichtung unmittelbar nebeneinanderliegender Hydraulikzylinder etwa den 0,8-fachen Wert des Außendurchmessers « d der Hydraulikzylinder. Hierdurch wird gewährleistet, daß ein entsprechend sperrig ausgebildetes Werkstück 11, das beispielsweise einen Rohrkrümmer aufweisen kann (Figur 1) sich zwischen zwei Hydraulikzylindem befinden kann, so daß die Hydraulikzylinder also nicht die Unterbringung eines derartigen Rohrkrümmers in der Presse behindern.The control body 17 also has a second diagonal line D 2 . In the area of its corners lying on the diagonal line D 2, it can be equipped with two further hydraulic cylinders 47 and 48, which are only indicated by dash-dotted lines and whose axes are designated A 3 and A 4 . In this case the radial press has four hydraulic cylinders 28, 29, 47 and 48 which are diametrically opposed in pairs with respect to the axis AA. The distance “s” between the outer surfaces of two hydraulic cylinders directly adjacent in the circumferential direction is approximately 0.8 times the value of the outer diameter “d of the hydraulic cylinders. This ensures that a correspondingly bulky workpiece 11, which may have, for example, a pipe bend (FIG. 1), can be located between two hydraulic cylinders, so that the hydraulic cylinders do not hinder the placement of such a pipe bend in the press.

Es ist den Figuren insgesamt noch zu entnehmen, daß das Widerlager 3 an den koplanaren Schenkeln 49 und 50 zweier spiegelsymmetrisch angeordneter, L-förmig ausgebildeter Verkleidungsteile 51 und 52 befestigt ist, deren parallele Schenkel 53 und 54 bis über den Steuerkörper 17 nach hinten geführt sind. Die Unterkanten der Verkleidungsteile 51 und 52 sind mit durchgehenden Aufstellflanschen 55 und 56 verbunden. Aus Figur 4 ergibt sich noch, daß zwischen den koplanaren Schenkeln 49 und 50 oberhalb und unterhalb der Einführungsöffnung 10 je ein weiteres Verkleidungsteil 57 und 58 angeordnet ist, das gleichfalls mit dem Widerlager 3 verbunden ist.It can be seen from the figures as a whole that the abutment 3 is fastened to the coplanar legs 49 and 50 of two mirror-symmetrically arranged, L-shaped cladding parts 51 and 52, the parallel legs 53 and 54 of which are guided back over the control body 17 . The lower edges of the trim parts 51 and 52 are connected with continuous mounting flanges 55 and 56. From Figure 4 it also follows that between the coplanar legs 49 and 50 above and below the insertion opening 10 there is a further covering part 57 and 58, which is also connected to the abutment 3.

Claims (7)

1. Radial press (1) with a press axis (A-A) for workpieces (11) with a rotationally symmetrical external surface and a workpiece axis that coincides with the press axis during pressing, wherein
a) a plurality of press cheeks (12) are arranged in a circle around the press axis (A-A) and are movably set radial to said axis on an abutment (3), and the extemal surfaces of said cheeks each have at least one control surface (14, 15, 16) inclined with respect to the axis,
b) a control body (17) is movable relative to the abutment (3) and the inside face thereof has at least one control surface (24, 25, 26) cooperating with the control surfaces of the press cheeks,
c) at least two hydraulic cylinders (25, 29) are connected hydraulically in parallel and have pistons (30) and piston rods (31) joined thereto, said piston rods being distributed equidistantly on the circumference of the control body (17) and running parallel to the press axis (A-A) and extending as tension rods between the abutment (3) and the control body (17), through which they pass on the outside of the control surface (24, 25, 26) thereof, characterised in that
d) the press axis (A-A) and the axes of the hydraulic cylinders (28, 29) are horizontally aligned,
e) with its end faces (8, 9) in the vertical position, the abutment (3) is fastened to trim parts (51, 52), the lower edges of which are provided with mounting flanges (66, 56) for the press,
f) the control body (17) is movably set on the horizontal piston rods (31) by means of bearings (32),
g) the hydraulic cylinders (28, 29) surrounding the pistons (30) bear on the control body (17), and
h) the piston rods (31) with the pistons (30) and cylinders (23, 29) are overhung on the other side of the control body (17) in such a way that the rear side of the press remote from the tending side is configured to be completely open to the environment.
2. Radial press according to claim 1, characterised in that the control body (17) consists of a regular polygonal plate, through the centre of which runs the press axis (A-A), and that the axes (Ah A2) of the piston rods (31) of the hydraulic cylinders (28, 29) pass through the control body (17) near the corners of the polygon.
3. Radial press according to claim 2, characterised in that the abutment (3) and the control body (17) each consist of a square plate with horizontally (4, 5 or 18, 19) or vertically aligned narrow sides (6, 7 or 20, 21) and two vertically aligned end faces (8, 9 or 22, 23), and that the axes (A,, A2) of the piston rods (31) disposed diametrically opposite one another in pairs in each case intersect a diagonal line (01, D2) of the end face (22, 23) of the control body (17).
4. Radial press according to claim 1, characterised by two hydraulic cylinders (28, 29) which diametrically oppose one another with respect to the axis (A-A).
5. Radial press according to claim 1, characterised by four hydraulic cylinders (28, 29, 47, 48) which diametrically oppose one another in pairs with respect to the axis (A-A).
6. Radial press according to claim 1, characterised in that the abutment (3) is fastened to the coplanar legs (49, 50) of two L-shaped trim parts (51, 52) arranged in mirror symmetry, the legs (53, 54) of said trim parts being parallel to the press axis (A-A) and extending rearwards to beyond the control body (17).
7. Radial press according to claim 6, characterised in that between the coplanar legs (49, 50) of the trim parts (51, 52), and above and below a lead-in opening (10) for the workpiece (11) set in the abutment (3), there is respectively disposed a further trim part (57, 58) likewise joined to the abutment (3).
EP86103462A 1985-04-03 1986-03-14 Radial press Expired EP0196523B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103462T ATE43802T1 (en) 1985-04-03 1986-03-14 RADIAL PRESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3512241 1985-04-03
DE19853512241 DE3512241A1 (en) 1985-04-03 1985-04-03 RADIAL PRESS

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EP0196523A2 EP0196523A2 (en) 1986-10-08
EP0196523A3 EP0196523A3 (en) 1987-01-28
EP0196523B1 true EP0196523B1 (en) 1989-06-07

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AT (1) ATE43802T1 (en)
DE (2) DE3512241A1 (en)

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DE2252096A1 (en) * 1971-10-28 1973-05-17 Daido Steel Co Ltd METHOD AND DEVICE FOR CONNECTING STEEL RODS
US3805580A (en) * 1972-08-07 1974-04-23 Imp Eastman Corp Apparatus for crimping turned fittings
SE7513288L (en) * 1975-01-27 1976-07-28 Wyle Laboratories PRESSING MACHINE, PREFERABLY FOR MOUNTING A FITTING ON A HOSE OR SIMILAR
US4014202A (en) * 1975-06-04 1977-03-29 Anchor Coupling Co. Inc. Crimping apparatus
DE2604221C3 (en) * 1976-02-04 1980-02-21 Altaiskij Nautschno-Issledovatelskij Institut Technologii Maschinostroenija, Barnaul (Sowjetunion) Machine tool for multi-stitch rolling in longitudinal profiles
FR2341093A1 (en) * 1976-02-13 1977-09-09 Anoflex Flexibles Machine attaching end fittings to flexible hydraulic pipes - is actuated by three small hydraulic jacks and has fingers pushed against tapered core of ring
DE2844475C2 (en) * 1978-10-12 1983-09-29 Peter Ing.(grad.) 6380 Bad Homburg Schröck Radial press for workpieces with a cylindrical outer surface
US4550587A (en) * 1983-12-15 1985-11-05 The Goodyear Tire & Rubber Company Heavy duty hose crimper

Also Published As

Publication number Publication date
ATE43802T1 (en) 1989-06-15
DE3512241C2 (en) 1990-08-09
EP0196523A2 (en) 1986-10-08
DE3512241A1 (en) 1986-10-16
US4774828A (en) 1988-10-04
DE3663781D1 (en) 1989-07-13
EP0196523A3 (en) 1987-01-28

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