EP0266671A2 - Elargisseur et dispositif d'élargissement - Google Patents

Elargisseur et dispositif d'élargissement Download PDF

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Publication number
EP0266671A2
EP0266671A2 EP87115867A EP87115867A EP0266671A2 EP 0266671 A2 EP0266671 A2 EP 0266671A2 EP 87115867 A EP87115867 A EP 87115867A EP 87115867 A EP87115867 A EP 87115867A EP 0266671 A2 EP0266671 A2 EP 0266671A2
Authority
EP
European Patent Office
Prior art keywords
expanding
sections
tool
expanding tool
guide part
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
EP87115867A
Other languages
German (de)
English (en)
Other versions
EP0266671A3 (en
EP0266671B1 (fr
Inventor
Christian Foll Und S Rems-Werk
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.)
Rems Werk Christian Foell und Soehne GmbH and Co
Original Assignee
Rems Werk Christian Foell und Soehne GmbH and Co
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
Priority claimed from DE19863637292 external-priority patent/DE3637292A1/de
Application filed by Rems Werk Christian Foell und Soehne GmbH and Co filed Critical Rems Werk Christian Foell und Soehne GmbH and Co
Publication of EP0266671A2 publication Critical patent/EP0266671A2/fr
Publication of EP0266671A3 publication Critical patent/EP0266671A3/de
Application granted granted Critical
Publication of EP0266671B1 publication Critical patent/EP0266671B1/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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging

Definitions

  • the invention relates to an expansion tool according to the preamble of claim 1 and an expansion device with such an expansion tool according to the preamble of claim 12.
  • the ends of pipes are expanded cylindrically, another pipe being inserted into the expanded pipe end and then connected to it by soldering.
  • the known expansion tools have a number of expansion sections which can be displaced radially outwards by means of a mandrel which is axially displaceable in the expansion tool.
  • the expanding tool is first inserted into the pipe end with the mandrel withdrawn.
  • the mandrel is then pushed axially forward and the expansion sections, which expand the corresponding pipe end cylindrically, are pressed outwards.
  • considerable forces are necessary for this because the tube is expanded over its entire circumference at the same time. Powerful drives are necessary for such expanding tools.
  • tubes that are relatively soft can be processed with these expanding tools because otherwise excessive forces have to be applied to deform the tube ends.
  • the pipes in the sanitary area are often made of copper. In order that such copper pipes can be expanded, they have to be soft annealed beforehand in a cumbersome manner.
  • the invention has for its object to design the generic expanding tool and the generic expanding device so that it can be used to expand pipes with relatively little force without prior treatment.
  • the at least approximately dome-shaped expansion sections of the expansion tool according to the invention generate high specific deformation forces in the tube, because the expansion portions are practically only in point contact with the tube.
  • the pipe end is not expanded over its entire circumference at the same time, but only in the contact area between the expanding sections and the pipe.
  • No powerful rotary drives are required to drive the expanding tool according to the invention.
  • the friction during the expansion process is also low due to the point contact. Because of the high deformation forces that can be exerted with the dome-shaped expansion sections, copper pipes, for example, no longer need to be soft-annealed before the expansion process. This significantly simplifies the processing of the pipes. With the expansion device according to the invention, the tubes can be expanded easily and with little effort.
  • the guide part is driven in rotation with the rotary drive.
  • the expanding tool connected to it in rotation is taken along.
  • the guide part with the expanding tool is axially displaced when pulling, so that the expanding tool is pushed into the pipe end to be expanded.
  • the expanding tool With the expanding tool, pipe ends can be expanded cylindrically.
  • the expanding device is designed as a portable device that the user can carry comfortably.
  • the expanding device according to FIGS. 1 and 2 consists essentially of two clamping jaws 2 and 3, which can be connected to one another with clamping screws 4.
  • the clamping jaws 2, 3 each have, in cross section, approximately semicircular depressions 5 and 6, into which a tube 7 to be expanded can be inserted. So that different diameter tubes 7 can be processed with the same expanding device, it has recesses 5, 6 of different sizes, into which the corresponding diameter tube can be inserted. So that it is reliably clamped firmly between the clamping jaws 2, 3, the recesses 5, 6 are designed such that the clamping jaws 2, 3 with their mutually facing sides 8 and 9 are not when the pipe 7 is clamped abut each other, but have a small distance from each other, not shown in FIG. 1. As a result, the tubes 7 can be firmly clamped securely in the depressions 5, 6.
  • the expanding device can also have quick-release fasteners, so that the clamping jaws 2, 3 can be quickly detached from one another and connected to one another.
  • the clamping jaw 3 has a block-like attachment 10, preferably formed in one piece with it, which has threaded bores 11. They are aligned with the receptacles 12 for the tubes 7 formed by the depressions 5, 6.
  • the clamping jaw 2 has a rectangular recess 13 on its end facing the attachment 10, which is delimited laterally by side walls 14 and 15 of the clamping jaw 2.
  • the clamping jaw 2 can rest with the end faces of the side walls 14, 15 on the end face 16 of the attachment 10.
  • a guide part 17 (FIG. 2) is screwed into the corresponding threaded bore 11, the longitudinal bore 18 of which accommodates the expanding tool 1. It has a shaft 19 with which it projects through the longitudinal bore 18. The shaft 19 protrudes from the guide part 17 at both ends and is connected to it in a rotationally fixed manner.
  • the stop 20 is rotatably connected to the guide part 19 via grub screws 21.
  • the expanding tool 1 is also connected in a rotationally fixed manner to the guide part 19 via the grub screws 21. Of course, it is possible to form the stop 20, the guide part 17 and the expanding tool 1 in one piece.
  • the multi-part training has the advantage that the expanding tool 1 can be replaced if necessary if it shows appropriate wear.
  • the guide part 17 is generally not subjected to as much stress as the expanding tool 1, so that the guide part can be used for a number of expanding tools 1.
  • At least the end 22 of the expanding tool 1 projecting over the guide part 17 is designed as a polygon and can be coupled to a drive motor.
  • a hand drill for example, is suitable for this purpose, in whose chuck 49 the end 22 of the expanding tool 1 can be clamped. The expanding tool 1 can then be rotated about its axis with the hand drill.
  • the guide part 17 Since the expanding tool 1 is connected to the guide part 17 in a rotationally fixed manner, the guide part 17 is also rotated when the expanding tool 1 is driven. Since it sits in the threaded bore 11 of the attachment 10, the guide part is screwed into the threaded bore or unscrewed from it, depending on the direction of rotation. The expanding tool 1 is accordingly taken along and moved against the clamped tube 7. The threads of the bores 11 and the guide part 17 have only a slight pitch, so that the expanding tool 1, which is also axially fixed to the guide part 17, can be moved exactly in the axial direction.
  • the expanding tool 1 carries two diagonally opposite expanding sections 23 and 24 (FIGS. 1 to 3). They protrude radially over the shaft 19 and are connected to one another by a diametrically extending web 25.
  • the widening sections 23, 24 are preferably the ends of this web 25. With the widening sections 23, 24, the corresponding pipe end is widened. So that there is no high friction, but high specific deformation forces can still be achieved in the pipe, the expansion sections 23, 24 are dome-shaped. The top of the expansion sections 23, 24 is thus curved both in the axial direction and in the circumferential direction. The radius of curvature is smaller than the radius of the shaft 19.
  • the end face 26 (FIG. 2) of the web 25 runs flat and perpendicular to the axis of the shaft 19.
  • the clamping jaw 2 is first removed from the clamping jaw 3 after loosening the clamping screws 4 or a quick fastener, and the tube 7 is placed in the recess 6 of the clamping jaw 3 corresponding to its diameter. Then the clamping jaw 2 is put on and the tube 7 is firmly clamped in the respective receptacle 12 by tightening the clamping screws. The tube 7 then projects with the end 27 to be expanded into the recess 13 (FIG. 2).
  • the guide part 17 can be screwed into the threaded bore 11 by means of a drive motor.
  • the expanding tool 1 for expanding the pipe end 27 is rotatably driven by means of a corresponding drive motor. The expanding tool 1 is axially displaced against the pipe 7 via the threaded connection.
  • the dome-shaped widening sections 23, 24 produce very high specific deformation forces in the pipe 7, since they are essentially only in contact with the inside 28 of the pipe end 27.
  • the deformation of the pipe 7 takes place only in the region of the widening sections 23, 24, that is to say only in a very small area. As a result, the deformation work is low.
  • a relatively low-power drive is sufficient to turn the expanding tool 1.
  • the expanding sections 23, 24 are not of the shape of the pipe end 27 to be deformed customized. As a result, the friction between the expanding tool 1 and the tube 7 is kept very low in connection with the essentially only selective contact, which also has an advantageous effect on the drive power.
  • the expanding tool 1 can therefore be driven, for example, with a conventional hand drill.
  • the expanding device is therefore ideal for use on construction sites or in the hobby workshop.
  • the hand drills that are already present, for example, on construction sites can be used to drive the expanding tool 1.
  • Separate drive devices are not necessary.
  • the expanding device thus represents an additional tool for hand drills.
  • the expanding tool 1 is rotated and thus axially displaced against the pipe 7 until the expanded pipe end 27 has the desired length.
  • the expanding tool 1 is then turned back until it emerges from the tube end 27.
  • Pipes with cylindrically widened ends are mainly used in sanitary engineering and are often made of copper. Since the tube end 27 is deformed only selectively with the expansion tool 1 and very high specific deformation forces can thereby be exerted, it is not necessary to anneal such a copper tube before expansion, as is necessary in the known expansion devices with expandable expansion tools. The annealing process can therefore be omitted when using the expansion device described. With the expanding device, tubes made of mild steel, brass or other materials can also be expanded.
  • FIG. 4 shows an embodiment of an expanding tool 1a which, in addition to the expanding sections 23a, 24a, has further expanding sections 29 and 30 at the free end, which project radially further outward than the expanding sections 23a, 24a.
  • the expansion sections 29, 30 are also dome-shaped, that is to say they have an upper side which is curved in the circumferential direction and also in the axial direction.
  • the expansion sections 29, 30 are spaced apart from the expansion sections 23a, 24a. Viewed in the axial direction, they can be at the same height as the expansion sections 23a, 24a, but can also be arranged offset to them in the circumferential direction.
  • the expansion tool 1a with the four deformation sections 23a, 24a, 29, 30 is used when thick-walled tubes have to be expanded and / or the tube ends have to be expanded very much. Since larger plastic deformations are necessary, the widening sections 29, 30 following in the direction of advance of the expanding tool 1a further deform the pipe end 27 which has already been widened by the widening sections 23a, 24a lying in front of them, so that there is no risk that the widened pipe end will become loose slightly contracts as soon as the expansion sections 23a, 24a are pulled out of the tube 7.
  • this end area 31 (FIG. 2) of the expansion tool 1, 1a is preferably of reinforced design.
  • the clamping jaws 2, 3 can only have a single receptacle 12.
  • the expanding tool 1b is also part of an expanding device. It is designed as a portable device that the user can carry comfortably.
  • the expanding device has two clamping jaws 2b and 3b, which can be connected to one another with clamping screws 4b.
  • the pipes 7b to be expanded are clamped between the two clamping jaws 2b and 3b.
  • in the clamping jaws 2b, 3b (not shown) are each provided in cross section approximately semicircular recesses into which the pipe 7b to be expanded can be inserted.
  • the clamping jaws 2b, 3b can in turn have depressions of different sizes, so that tubes 7b of different sizes can also be processed with the expanding device.
  • the expanding device can also have quick-release fasteners so that the clamping jaws 2b, 3b can be quickly detached from one another and connected to one another.
  • One clamping jaw in the exemplary embodiment the clamping jaw 3b, is provided with a plug-on part 32, preferably formed in one piece with it, which is plugged onto a neck piece 33 of a drive unit 34.
  • the plug-on part 32 is clamped on the neck piece 33.
  • a clamping ring can be used for this.
  • this clamping ring 35 is part of the plug-on part 32.
  • a drive spindle 36 of the drive unit 34 is rotatably mounted in the neck piece 33 of the drive unit 34.
  • a driver 37 which has a polygonal outline, is screwed onto the drive spindle 36.
  • a sleeve-shaped guide or drive part 38 is axially displaceably mounted on it and engages with an external thread 39 in an internal thread 40 of the plug-on part 32.
  • the drive part 38 has at its end facing the drive spindle 36 a radially outwardly directed flange 41 which serves as a stop for limiting the displacement path of the drive part 38 axially inwards.
  • the flange 41 can cooperate with a counter-stop 42, which in the exemplary embodiment is designed as a ring and on the inner wall of the Push-on part 32 and on the end face against the neck piece 33.
  • the counter-stop 42 can also be a snap ring, for example, which is inserted into a groove in the inner wall of the push-on part 32.
  • This counter stop can also be formed by a radially inwardly projecting projection of the plug-on part 32.
  • the counter-stop 42 has the advantage, however, that the retracted position of the drive part 38 is precisely defined.
  • the counter-stop 42 is accommodated in a section 43 of the plug-on part 32 which has an inner diameter.
  • a stop surface 45 is formed which lies transversely to the axis of the guide part and lies in the path of movement of the flange 41 of the drive part 38. The stop surface 45 thus determines the outermost position of the expanding tool 1b.
  • the internal thread 40 is provided in section 44 of the plug-on part 32.
  • the driver 37 is designed as a sleeve and is placed on the driver part 46 of the drive spindle 36 and releasably connected to it by a screw 47.
  • the screw 47 is protected within the driver 37.
  • the drive part 38 is provided at its end projecting beyond the driver 37 with a blind hole 48 into which the expanding tool 1b is inserted with its shaft 19b.
  • the expanding tool 1b is suitably detachably connected to the drive part 38 so that different expanding tools can be used or damaged expanding tools can be easily replaced.
  • the expanding tool 1b is shown in its most retracted position, in which it lies completely within the narrowed section 44 of the push-on part 32.
  • the flange 41 abuts the counter stop 42.
  • the pipe 7b to be expanded is clamped between the clamping jaws 2b and 3b, the pipe end 27b to be expanded being directed against the expanding tool 1b via the clamping jaws 2b, 3b and reaching close to the free end of the section 44 of the push-on part 32.
  • the drive unit 34 is switched on, so that the drive spindle 36 is rotated about its axis. It takes the driver 37 with it. Since it has an angular outer contour, the drive part 38 is also carried in the direction of rotation.
  • the drive part 38 is axially displaced on the driver 37 and the expanding tool 1b is pushed into the pipe end 27b, which is expanded cylindrically by the expanding tool 1b. Since the expansion device is attached to the neck piece 33 of the drive unit 34, the reaction torque which occurs when the tube 7b is expanded is absorbed by the drive unit 34 itself, so that the user of the expansion device no longer has to absorb the counter torque. As a result, the tube end can be easily expanded with little effort using the expanding device. The user does not even have to hold the drive unit 34 when expanding, but can support it on a base. This enables fatigue-free work.
  • the expanding tool 1b is designed the same as the embodiment according to FIG. 4, except for its shorter shaft 19b; it can of course also have a training according to FIGS. 1 to 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Gripping On Spindles (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP87115867A 1986-11-03 1987-10-29 Elargisseur et dispositif d'élargissement Expired - Lifetime EP0266671B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3637292 1986-11-03
DE19863637292 DE3637292A1 (de) 1986-11-03 1986-11-03 Aufweitwerkzeug
DE3643727 1986-12-20
DE3643727A DE3643727C2 (de) 1986-11-03 1986-12-20 Rohraufweitvorrichtung

Publications (3)

Publication Number Publication Date
EP0266671A2 true EP0266671A2 (fr) 1988-05-11
EP0266671A3 EP0266671A3 (en) 1988-09-07
EP0266671B1 EP0266671B1 (fr) 1990-10-03

Family

ID=25848982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115867A Expired - Lifetime EP0266671B1 (fr) 1986-11-03 1987-10-29 Elargisseur et dispositif d'élargissement

Country Status (4)

Country Link
US (1) US4831855A (fr)
EP (1) EP0266671B1 (fr)
DE (2) DE3643727C2 (fr)
ES (1) ES2017987B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007065955A1 (fr) * 2005-12-09 2007-06-14 Rennsteig Werkzeuge Gmbh Dispositif d'evasement des extremites d'un tube
CN108326165A (zh) * 2018-02-11 2018-07-27 高晓生 小直径高压毛细管的扩口装置

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911020A (en) * 1986-10-28 1990-03-27 The Foxboro Company Coriolis-type mass flowmeter circuitry
US5050439A (en) * 1986-10-28 1991-09-24 The Foxboro Company Coriolis-type mass flowmeter circuitry
JP2834264B2 (ja) * 1990-03-15 1998-12-09 レッキス工業株式会社 電動フレア工具
DE19704517C2 (de) 1997-02-06 2003-06-12 Zf Sachs Ag Drehschwingungsdämpfungsvorrichtung zum Dämpfen von Drehschwingungen in einem Antriebsstrang
US6484550B2 (en) 2001-01-31 2002-11-26 Rexam Beverage Can Company Method and apparatus for necking the open end of a container
US6931902B1 (en) * 2003-06-11 2005-08-23 Bryan Delp Tube flaring machine
US20060117827A1 (en) * 2004-12-07 2006-06-08 Kao Meng J Tube expander
US7650772B2 (en) * 2007-03-26 2010-01-26 Minor Rodger D Rotary flaring tool and method of use
CH707604A1 (de) * 2013-02-13 2014-08-15 Florian Goop Bördelaufsatz zum Aufweiten von zylindrischen Rohrenden.
CN104128522A (zh) * 2013-11-30 2014-11-05 柳州万众汽车部件有限公司 管端旋压安全夹持装置
WO2020123108A1 (fr) 2018-12-10 2020-06-18 Uniweld Products, Inc. Outil d'évasement et procédé d'évasement de tube ou similaire
CN111186128A (zh) * 2019-12-10 2020-05-22 开源塑业科技（南通）有限公司 一种管材端口自动化立式多工位扩口系统
CA3195657A1 (fr) * 2020-10-13 2022-04-21 Jonathan Sada Trepans et leurs procedes de fabrication et d'utilisation
USD1073430S1 (en) * 2022-07-22 2025-05-06 Navac Inc. Power tube expander
CN116653275B (zh) * 2023-07-31 2023-12-05 江苏乾锦塑业科技有限公司 一种cpvc电缆管生产用扩口装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449247A (en) * 1944-03-25 1948-09-14 Burndy Engineering Co Inc Method for forming tubular structures
US2861623A (en) * 1957-10-29 1958-11-25 Imp Brass Mfg Co Tube flaring tool with frusto conical roller bearing groove
US3262297A (en) * 1964-02-04 1966-07-26 Chicago Speciaity Mfg Co Flaring and burnishing tool
DE1896112U (de) * 1964-04-17 1964-07-09 David Kotthaus Ag Geraet zur bildung von muffenfoermig erweiterten rohrenden.
CH416521A (fr) * 1965-03-03 1966-07-15 Pernet Cyril Appareil pour former des collerettes à l'extrémité de tubes en matière tendre
US3683657A (en) * 1969-05-23 1972-08-15 Fred Davies Pipe fitting tool
CA926748A (en) * 1969-05-30 1973-05-22 T. Clay Elwyn Tube expanding device
US3818734A (en) * 1973-05-23 1974-06-25 J Bateman Casing expanding mandrel
US3913364A (en) * 1974-07-11 1975-10-21 Imp Eastman Corp Flaring tool
DD149475A1 (de) * 1979-04-06 1981-07-15 Kauno L J Koskinen Aufweitvorrichtung zum herstellen eines anschlussstutzens
DE8534175U1 (de) * 1985-12-05 1986-01-30 John & Co, 7590 Achern Dorn zum Aufweiten von Rohren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007065955A1 (fr) * 2005-12-09 2007-06-14 Rennsteig Werkzeuge Gmbh Dispositif d'evasement des extremites d'un tube
CN108326165A (zh) * 2018-02-11 2018-07-27 高晓生 小直径高压毛细管的扩口装置

Also Published As

Publication number Publication date
DE3643727A1 (de) 1988-06-30
DE3643727C2 (de) 1996-09-05
EP0266671A3 (en) 1988-09-07
US4831855A (en) 1989-05-23
ES2017987B3 (es) 1991-03-16
DE3765386D1 (de) 1990-11-08
EP0266671B1 (fr) 1990-10-03

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