EP0196523B1 - Radialpresse - Google Patents

Radialpresse Download PDF

Info

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
Authority
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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0196523A2 (de
EP0196523A3 (en
Inventor
Peter Dipl.-Ing. Schröck
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.)
Uniflex Hydraulik GmbH
Original Assignee
Schrock Peter Dipl-Ing
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 Schrock Peter Dipl-Ing filed Critical Schrock Peter Dipl-Ing
Priority to AT86103462T priority Critical patent/ATE43802T1/de
Publication of EP0196523A2 publication Critical patent/EP0196523A2/de
Publication of EP0196523A3 publication Critical patent/EP0196523A3/de
Application granted granted Critical
Publication of EP0196523B1 publication Critical patent/EP0196523B1/de
Expired 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
    • B21D39/04—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.

Landscapes

  • 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)
EP86103462A 1985-04-03 1986-03-14 Radialpresse Expired EP0196523B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103462T ATE43802T1 (de) 1985-04-03 1986-03-14 Radialpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3512241 1985-04-03
DE19853512241 DE3512241A1 (de) 1985-04-03 1985-04-03 Radialpresse

Publications (3)

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

Family

ID=6267247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103462A Expired EP0196523B1 (de) 1985-04-03 1986-03-14 Radialpresse

Country Status (4)

Country Link
US (1) US4774828A (enrdf_load_stackoverflow)
EP (1) EP0196523B1 (enrdf_load_stackoverflow)
AT (1) ATE43802T1 (enrdf_load_stackoverflow)
DE (2) DE3512241A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6290439B1 (en) * 1994-12-30 2001-09-18 Black & Decker, Inc. Method and apparatus for forming parts from a continuous stock material and associated forge
US5842267A (en) * 1994-12-30 1998-12-01 Black & Decker, Inc. Method and apparatus for forming parts of a predetermined shape from a continuous stock material
DE19940744B4 (de) * 1999-08-27 2008-11-06 Uniflex-Hydraulik Gmbh Radialpresse
EP1789229B1 (en) * 2004-09-17 2013-03-13 Lokring Technology, LLC Installation tool assembly
US20070186615A1 (en) * 2006-02-14 2007-08-16 Eaton Corporation Crimping apparatus and methods of crimping with retainers
US7797979B2 (en) * 2006-02-14 2010-09-21 Eaton Corporation Crimping apparatus including a tool for supporting a plurality of crimping members
US7497106B2 (en) * 2006-02-14 2009-03-03 Eaton Corporation Crimping apparatus with a support structure including first and second portions
PT2420332E (pt) * 2010-08-20 2013-03-11 Op Srl Dispositivo de preensão de ferramentas de uma prensa radial
DE102015002556B3 (de) * 2015-03-02 2016-05-12 Uniflex-Hydraulik Gmbh Radialpresse
DE102020121143B4 (de) 2020-08-11 2022-03-10 Uniflex - Hydraulik GmbH Radialpresse
DE102020121142B4 (de) 2020-08-11 2022-03-10 Uniflex - Hydraulik GmbH Radialpresse

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE686956C (de) * 1936-07-24 1940-01-19 Becker & Van Huellen Hydraulische Presse
FR856289A (fr) * 1939-02-22 1940-06-10 Outil Mec Usinage Artillerie Presse hydraulique de grande puissance
US2296072A (en) * 1939-11-20 1942-09-15 Hydraulic Dev Corp Inc Hydraulic press
US3093182A (en) * 1960-06-20 1963-06-11 Resistoflex Corp Swaging tool
US3019520A (en) * 1961-01-23 1962-02-06 Tex Tube Inc Pipe crimping apparatus
US3343252A (en) * 1964-03-03 1967-09-26 Reynolds Metals Co Conduit system and method for making the same or the like
US3461712A (en) * 1967-04-25 1969-08-19 Neville T Henkel Swager for metallic rings
US3461710A (en) * 1967-12-28 1969-08-19 Grotnes Machine Works Inc Methods and apparatus for shrink forming metal articles
DE2252096A1 (de) * 1971-10-28 1973-05-17 Daido Steel Co Ltd Verfahren und vorrichtung zum verbinden von stahlstaeben
US3805580A (en) * 1972-08-07 1974-04-23 Imp Eastman Corp Apparatus for crimping turned fittings
SE7513288L (sv) * 1975-01-27 1976-07-28 Wyle Laboratories Pressningsmaskin, foretredesvis for montering av ett beslag pa en slang eller liknande
US4014202A (en) * 1975-06-04 1977-03-29 Anchor Coupling Co. Inc. Crimping apparatus
DE2604221C3 (de) * 1976-02-04 1980-02-21 Altaiskij Nautschno-Issledovatelskij Institut Technologii Maschinostroenija, Barnaul (Sowjetunion) Werkzeugmaschine zum mehrstichigen Einwalzen von Längsprofilen
FR2341093A1 (fr) * 1976-02-13 1977-09-09 Anoflex Flexibles Machine a sertir des embouts sur des tuyauteries souples
DE2844475C2 (de) * 1978-10-12 1983-09-29 Peter Ing.(grad.) 6380 Bad Homburg Schröck Radialpresse für Werkstücke mit zylindrischer Außenfläche
US4550587A (en) * 1983-12-15 1985-11-05 The Goodyear Tire & Rubber Company Heavy duty hose crimper

Also Published As

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

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