EP0590188A1 - Outil de presse - Google Patents

Outil de presse Download PDF

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Publication number
EP0590188A1
EP0590188A1 EP92116718A EP92116718A EP0590188A1 EP 0590188 A1 EP0590188 A1 EP 0590188A1 EP 92116718 A EP92116718 A EP 92116718A EP 92116718 A EP92116718 A EP 92116718A EP 0590188 A1 EP0590188 A1 EP 0590188A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
pressing
tube
tool according
press tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92116718A
Other languages
German (de)
English (en)
Other versions
EP0590188B1 (fr
Inventor
Erich Büchele
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
Priority to EP19920116718 priority Critical patent/EP0590188B1/fr
Priority to DE59200993T priority patent/DE59200993D1/de
Publication of EP0590188A1 publication Critical patent/EP0590188A1/fr
Application granted granted Critical
Publication of EP0590188B1 publication Critical patent/EP0590188B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • 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

Definitions

  • the invention relates to a press tool according to the preamble of claim 1.
  • Printing tools in which the bead is produced by rolling are often used to produce beads on pipes.
  • a first roller is arranged in the interior of the tube, which has an increase corresponding to the inner shape of the bead.
  • a further roller is provided on the outside of the tube, which has a depression corresponding to the outer shape of the bead. At least one of these rollers is driven and in this way takes the pipe and possibly the other roller with it by friction.
  • This type of bead production presents no difficulties as long as the material of the tube is easily deformable. However, if the material of the tube is a material that is difficult to deform, such as stainless steel, this bead production is very difficult. It is often necessary to heat the tube in the area of the bead in order to obtain greater ductility.
  • FIG. 1 Another known method for producing an outer bead on a pipe uses a pressing tool.
  • a pressing tool is the subject of DE-GM 91 02 285 by the same applicant and shown in Figure 4 of this application.
  • This pressing tool has a divisible cylindrical outer shape 1, which is provided with a circumferential bead-like recess 2.
  • Within this outer shape 1 there are eight pressing bodies 5, which are designed like a segment of a circle and each have an elevation 6 corresponding to the inner shape of the bead 3 at the level of the depression 2.
  • the pressed bodies 5 are cylinder segments, the cylindrical part of which lies on a radius which corresponds to the inner radius of the pipe 4 to be machined.
  • a rod 8 is arranged in the center of the pressing tool and has a support body 10 at its end, which is secured by means of a nut 11 to a threaded bolt 9 at the end of the rod 8.
  • the pressing bodies 5 On the inside, the pressing bodies 5 have obliquely extending surfaces 15 which form one Add octagonal hollow truncated cone.
  • An axially displaceable mandrel 16 is arranged on the rod 8 and has eight inclined surfaces 17 which have the same inclination as the inclined surfaces 15 of the pressing body 5.
  • this tube 4 is inserted into the outer mold 1 and the mandrel 16 is moved into the area of the pressing body 5, whereby the pressing body 5 is spread radially outwards.
  • the outer bead 3 is formed on the tube 4.
  • the mandrel 16 is withdrawn, the pressing bodies 5 contract under the pressure of an encircling helical spring 18 and release the tube 4, which can then be removed after opening the outer mold 1.
  • the described pressing tool is well suited for short pipe sections with a large inner diameter. However, it is unsuitable both for long tubes and for tubes with a small diameter and relatively thick wall. It is not suitable for long pipes because the support body 10 is supported on a projection of the outer shape 1, which extends over the feed gap for the pipe. As a result, only a short piece of pipe can be brought into the press tool; a longer pipe cannot protrude beyond the press tool.
  • the press tool is also not suitable for pipes with a small inner diameter, because the mandrel 16 must have a central longitudinal bore as a result of the passage of the rod 8. In order to withstand the high pressures, the remaining shell thickness of the mandrel, especially in the area of its tip, must not become too small.
  • the jacket of the mandrel 16 must rather be at least everywhere so thick that it is not bent even at high pressure loads and touches the rod 8 guided in it. Since the mandrel is located inside the pipe to be machined, this results in a lower limit for its inside diameter.
  • the pressing tool 30 has a separable cylindrical outer shape 1, which is provided with a circumferential bead-like recess 2, the shape of which corresponds to the outer shape of an outer bead 3, which is to be formed on a circular cylindrical tube 4.
  • This outer shape 1 is supported on the frame of the pressing tool 30.
  • the inner diameter of the cylindrical region of the outer shape 1 corresponds to the outer diameter of the tube 4.
  • the pressed bodies 5 are cylinder segments, the outer radius of which corresponds to the inner radius of the tube 4.
  • the pressing bodies 5 have inclined surfaces 15, the inclined surfaces 15 of all pressing bodies 5 complementing one another to form an octagonal hollow truncated cone.
  • the compression body 5 is wrapped around at least one point by a helical spring 18 which is arranged in grooves on the outer surface of the compression body 5.
  • the pressed bodies 5 At the base of the through the sloping surfaces 15 of the side of the hollow body facing the truncated cone 5, the pressed bodies 5 have projections 31 which protrude radially outward and which are in direct contact with a circumferential support body 32 of the outer mold 1.
  • the mandrel 16 On the side facing the base of the hollow truncated cone formed by the inclined surfaces 15 there is a mandrel 16 which can be inserted into the hollow truncated cone with the aid of a displacement unit 33.
  • the mandrel 16 has eight outer surfaces 17 which come into engagement with the inclined surfaces 15 of the pressing bodies 5 and each have the same angle to the horizontal as these.
  • the pressing tool 30 works as follows: If the mandrel 16 is in its position outside the area of the pressing body 5, as is shown in the right part of FIG. 1, then two adjacent pressing bodies 5 are in contact with one another with their radial surfaces 20 due to the action of the helical spring 18, that is to say they are radially inward Pushed together in the direction of the axis 13. In this position, the outer edges of the elevations 6 lie within a circle, the diameter of which is slightly smaller than the inner diameter of the pipe 4 to be machined. The pressing body 5 and the outer mold 1 form an insertion gap for the pipe 4 that is open to the left. The pipe 4 can therefore inserted into the outer mold 1 from the left and pushed over the eight pressing bodies 5.
  • the length of the pressing body 5 is expediently dimensioned such that the tube 4 can be pushed as far as possible against the projections 31 in order later to obtain the bead 3 at the desired location.
  • the mandrel 16 is moved by the displacement unit 33 into the region of the hollow truncated cone formed by the pressing body 5.
  • an outer surface of the mandrel 16 comes into surface contact with the inclined surface 15 of the corresponding pressing body 5.
  • the pressing bodies 5 are spread radially outward against the action of the helical spring 18 due to the wedge effect. Due to the eight-faced design of the mandrel 16 and its interaction with the inclined surfaces 15 of the pressed body 5, the pressed body 5 are here forced radially outwards.
  • the elevations 6 of the pressing body 5 engage in the recesses 2 of the outer mold 1, as a result of which the outer bead 3 is formed on the tube 4 located therebetween.
  • the pressing bodies 5 are radially positively guided by the octagonal mandrel 16, an additional radial guide in the form of grooves and tongues can be provided between the projections 31 and the supporting body 32 of the outer mold 1.
  • the mandrel 16 is moved out of the compacts 5 after a first machining step, the tube 4 is rotated by a small angle and then the Mandrel 16 moved into the compact 5 again. A trough-free bead 3 is thus created.
  • the pressing body arrangement e.g. can be rotated via the radial guide 31, 32, but then the mandrel 16 must be rotated accordingly.
  • the mandrel can be designed in the shape of a circular cone, ie it can have no individual outer surfaces 17.
  • the inside of the pressing body 5 must also be adapted to the shape of the mandrel, that is to say it must be concave.
  • the outer shape 1 can be made in two parts. At least one end is either permanently connected to the machine or is supported in the direction of impact of the mandrel 16 against its frame, for example via the outer annular shoulder 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP19920116718 1992-09-30 1992-09-30 Outil de presse Expired - Lifetime EP0590188B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19920116718 EP0590188B1 (fr) 1992-09-30 1992-09-30 Outil de presse
DE59200993T DE59200993D1 (de) 1992-09-30 1992-09-30 Presswerkzeug.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19920116718 EP0590188B1 (fr) 1992-09-30 1992-09-30 Outil de presse

Publications (2)

Publication Number Publication Date
EP0590188A1 true EP0590188A1 (fr) 1994-04-06
EP0590188B1 EP0590188B1 (fr) 1994-12-14

Family

ID=8210082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920116718 Expired - Lifetime EP0590188B1 (fr) 1992-09-30 1992-09-30 Outil de presse

Country Status (2)

Country Link
EP (1) EP0590188B1 (fr)
DE (1) DE59200993D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738512A1 (fr) * 1995-09-07 1997-03-14 Sepma Sa Dispositif d'ecartement pour assurer l'expansion radiale d'un manchon deformable
EP0815981A2 (fr) * 1996-07-06 1998-01-07 Karl Schräder Nachfolger Inh. Karl-Heinz Schräder Dispositif pour enlargir les extrémités de tuyaux de cheminée
DE102011081519A1 (de) * 2011-08-24 2013-02-28 Feinmechanik Alfred-Dietzler Vorrichtung und verfahren zum prägen einer sicke in ein rohr
WO2013186360A1 (fr) * 2012-06-14 2013-12-19 Senior Flexonics Gmbh Pièce de tuyau et procédé de fabrication d'une pièce de tuyau
CN106345872A (zh) * 2016-11-03 2017-01-25 襄阳顺特阳光科技有限公司 管端起筋机
CN110153299A (zh) * 2019-06-27 2019-08-23 烟台豪德博尔机械设备有限公司 钢管承插口成型机
CN110153298A (zh) * 2019-06-27 2019-08-23 烟台豪德博尔机械设备有限公司 钢管承插口自动成型生产线
CN110681750A (zh) * 2019-10-12 2020-01-14 沙文曼(无锡)智能装备有限公司 管端成型机的旋转外撑结构
CN113878007A (zh) * 2021-09-28 2022-01-04 湖北三江航天红阳机电有限公司 一种堵头罩球头孔的加工工装及加工方法
CN116274550A (zh) * 2023-01-15 2023-06-23 平湖爱驰威汽车零部件有限公司 一种三叉管件斜口定径模具
CN116967304A (zh) * 2023-08-15 2023-10-31 安徽丰逸智能家居有限公司 一种自动化张紧机构及高精度张紧机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1908521A (en) * 1930-04-08 1933-05-09 Niagara Machine And Tool Works Method of beading a cylindrical sheet metal shell
US2720241A (en) * 1952-10-10 1955-10-11 Carando Machine Works Bead forming machine for barrel drums
GB1485099A (en) * 1975-02-13 1977-09-08 Rothenberger Gmbh Co Tool for enlarging the ends of pipes
GB1487988A (en) * 1975-01-30 1977-10-05 Straza Enterprises Ltd Tube corrugation apparatus
DD221936A1 (de) * 1984-03-13 1985-05-08 Rudisleben Chemieanlagenbau Vorrichtung zum aufweiten von rohrenden
DE9102285U1 (de) * 1991-02-27 1991-05-29 EBM Erich Büchele Maschinenbau GmbH, 8901 Meitingen Presswerkzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1908521A (en) * 1930-04-08 1933-05-09 Niagara Machine And Tool Works Method of beading a cylindrical sheet metal shell
US2720241A (en) * 1952-10-10 1955-10-11 Carando Machine Works Bead forming machine for barrel drums
GB1487988A (en) * 1975-01-30 1977-10-05 Straza Enterprises Ltd Tube corrugation apparatus
GB1485099A (en) * 1975-02-13 1977-09-08 Rothenberger Gmbh Co Tool for enlarging the ends of pipes
DD221936A1 (de) * 1984-03-13 1985-05-08 Rudisleben Chemieanlagenbau Vorrichtung zum aufweiten von rohrenden
DE9102285U1 (de) * 1991-02-27 1991-05-29 EBM Erich Büchele Maschinenbau GmbH, 8901 Meitingen Presswerkzeug

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738512A1 (fr) * 1995-09-07 1997-03-14 Sepma Sa Dispositif d'ecartement pour assurer l'expansion radiale d'un manchon deformable
EP0815981A2 (fr) * 1996-07-06 1998-01-07 Karl Schräder Nachfolger Inh. Karl-Heinz Schräder Dispositif pour enlargir les extrémités de tuyaux de cheminée
EP0815981A3 (fr) * 1996-07-06 1998-02-11 Karl Schräder Nachfolger Inh. Karl-Heinz Schräder Dispositif pour enlargir les extrémités de tuyaux de cheminée
DE102011081519A1 (de) * 2011-08-24 2013-02-28 Feinmechanik Alfred-Dietzler Vorrichtung und verfahren zum prägen einer sicke in ein rohr
WO2013186360A1 (fr) * 2012-06-14 2013-12-19 Senior Flexonics Gmbh Pièce de tuyau et procédé de fabrication d'une pièce de tuyau
US9951894B2 (en) 2012-06-14 2018-04-24 Senior Ip Gmbh Pipe component and method for manufacturing a pipe component
CN106345872A (zh) * 2016-11-03 2017-01-25 襄阳顺特阳光科技有限公司 管端起筋机
CN110153298A (zh) * 2019-06-27 2019-08-23 烟台豪德博尔机械设备有限公司 钢管承插口自动成型生产线
CN110153299A (zh) * 2019-06-27 2019-08-23 烟台豪德博尔机械设备有限公司 钢管承插口成型机
CN110153299B (zh) * 2019-06-27 2024-06-11 豪德博尔(山东)智能装备有限公司 钢管承插口成型机
CN110153298B (zh) * 2019-06-27 2024-06-11 豪德博尔(山东)智能装备有限公司 钢管承插口自动成型生产线
CN110681750A (zh) * 2019-10-12 2020-01-14 沙文曼(无锡)智能装备有限公司 管端成型机的旋转外撑结构
CN113878007A (zh) * 2021-09-28 2022-01-04 湖北三江航天红阳机电有限公司 一种堵头罩球头孔的加工工装及加工方法
CN113878007B (zh) * 2021-09-28 2023-11-14 湖北三江航天红阳机电有限公司 一种堵头罩球头孔的加工工装及加工方法
CN116274550A (zh) * 2023-01-15 2023-06-23 平湖爱驰威汽车零部件有限公司 一种三叉管件斜口定径模具
CN116274550B (zh) * 2023-01-15 2023-12-15 平湖爱驰威汽车零部件有限公司 一种三叉管件斜口定径模具
CN116967304A (zh) * 2023-08-15 2023-10-31 安徽丰逸智能家居有限公司 一种自动化张紧机构及高精度张紧机
CN116967304B (zh) * 2023-08-15 2024-01-16 安徽丰逸智能家居有限公司 一种自动化张紧机构及高精度张紧机

Also Published As

Publication number Publication date
EP0590188B1 (fr) 1994-12-14
DE59200993D1 (de) 1995-01-26

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