US20100139356A1 - Device and method for the axial forming of elongated hollow bodies - Google Patents

Device and method for the axial forming of elongated hollow bodies Download PDF

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Publication number
US20100139356A1
US20100139356A1 US12/667,099 US66709907A US2010139356A1 US 20100139356 A1 US20100139356 A1 US 20100139356A1 US 66709907 A US66709907 A US 66709907A US 2010139356 A1 US2010139356 A1 US 2010139356A1
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US
United States
Prior art keywords
hollow body
ram
expansion mandrel
receptacle
reduction die
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.)
Abandoned
Application number
US12/667,099
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English (en)
Inventor
Ulrich Brochheuser
Andreas Gehrke
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.)
GKN Driveline International GmbH
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
Assigned to GKN DRIVELINE INTERNATIONAL GMBH reassignment GKN DRIVELINE INTERNATIONAL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROCHHEUSER, ULRICH, GEHRKE, ANDREAS
Publication of US20100139356A1 publication Critical patent/US20100139356A1/en
Abandoned 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/10—Making machine elements axles or shafts of cylindrical form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles

Definitions

  • the present invention relates to a device and to a method for axially forming an elongate hollow body.
  • pipes can be either expanded or reduced in diameter at their ends in one working process.
  • pipes, or elongate hollow bodies are, however, formed in two working processes which take place separately from one another, which working processes take place either on different machines or require a set-up process in order to be able to use the respectively required tool sets.
  • a device for axially forming an elongate hollow body comprises a reduction die for leading through the elongate hollow body, a ram for pushing the elongate hollow body through the reduction die in the direction of an axis, an expansion mandrel and a mechanism for limiting the axial movement of the ram.
  • the ram and the expansion mandrel are movable on the same axis and the expansion mandrel is arranged within the ram.
  • Such a device is suitable for producing elongate hollow bodies, in particular pipes, wherein the workpieces may also have structures which are already provided or which may be produced as a result of the workpieces being pushed through the reduction die and/or as a result of the expansion by the expansion mandrel.
  • the hollow body it is possible in this way for the hollow body to be reduced to a first diameter in a first portion and expanded in a second portion to a second diameter as a result of a movement of the ram and the expansion mandrel in the same direction.
  • the ram may be formed in the manner of a cylinder or similar hollow body and have a central axis, which regularly corresponds to the movement axis.
  • a central axis which regularly corresponds to the movement axis.
  • the ram and expansion mandrel are formed coaxially with respect to one another.
  • the expansion mandrel advantageously projects out of the ram in the “inserted” state, such that the expansion mandrel forms an upstream radial support for the elongate hollow body in a first forming process.
  • the axial movement of the ram may be limited based on different structural or control concepts, such as, for example, possible to provide a motor, a stop, a feed motion limiter, a brake, a latching lug, a damper or the like, in order to stop the ram at a predefined time (and/) or movement travel.
  • both the receptacle for the workpiece and also for the reduction die to be heatable, such that the workpiece may basically (and preferably) be formed in the cold state, but if appropriate also in the semi-warmed or warmed state.
  • the range of blue brittleness (approximately 400° C.) should be overcome, with it preferably being possible to operate in the range of 700-800° C. Warmed forming is carried out above temperatures of at least 1100° C. Therefore, it is in particular also proposed that the expansion mandrel and/or the ram and/or the reduction die and/or a receptacle for the elongate hollow profile be heatable.
  • the expansion mandrel is movable independently of the ram. It is therefore possible for the workpiece to be divided into first and second portions of any desired length.
  • the ram pushes the hollow body through the reduction die until a predetermined length of a first portion is reached.
  • the expansion mandrel is moved further such that the workpiece is expanded over the predetermined length of a second portion proceeding from that end of the workpiece, which is connected to the ram or the expansion mandrel.
  • the expansion mandrel need not necessarily be pushed so far that the workpiece fills out the gap between the expansion mandrel and the reduction die, but rather may be stopped before said point.
  • a method for axially forming an elongate hollow body is also disclosed.
  • a ram and an expansion mandrel is moved in the same direction, and the hollow body is reduced to a first diameter in a first portion during a first process and is expanded in a second portion to a second diameter during a second process.
  • a parallel movement of the ram and of the expansion mandrel takes place within a receptacle for positioning the elongate hollow body, wherein the ram pushes the elongate hollow body into a reduction die.
  • the ram is moved in the direction of the axis longitudinally as far as the reduction die, wherein the expansion mandrel can fix the ram, or the hollow body to be formed, in the desired position.
  • the workpiece (hollow body) is pushed (partially) through the reduction die with the required force, wherein at the same time, a reduction of the previous (starting) diameter of the workpiece takes place in the contact region of the reduction die and workpiece.
  • the expansion mandrel during the second process, only an axial movement of the expansion mandrel is carried out until the expansion mandrel extends at least partially into a reduction die. While the ram now moves no further and rests in the receptacle, the expansion mandrel (if appropriate, also a profiled mandrel) alone is moved further longitudinally in the direction of the reduction die. Here, the expansion mandrel is forced into the workpiece and expands the latter to such an extent that its circumferential surface comes to bear against the receptacle.
  • the ram acts on the elongate hollow body axially and the expansion mandrel acts on the elongate hollow body radially from the inside.
  • the invention encompasses the use of a hollow body produced by the device proposed here, or produced according to the method presented here, for transmitting torque in a motor vehicle. Consideration is given here in particular to longitudinal shafts in the drivetrain of motor vehicles.
  • FIG. 1 is a cross section of a design variant of a device for axially forming an elongated hollow body
  • FIG. 2 is a cross section of the device from FIG. 1 during a reduction of a diameter of a workpiece
  • FIG. 3 is a cross section of the device from FIG. 1 during a subsequent expansion of the diameter
  • FIG. 4 is a representation of a drivetrain of a motor vehicle having a longitudinal shaft.
  • FIG. 1 schematically shows the cross section of a device 1 for axially forming an elongate hollow body 2 , with the hollow body 2 being placed or inserted into a receptacle 3 at the start of the process.
  • a ram 5 and an expansion mandrel 6 are not in engagement with the hollow body 2 , but may already be positioned or guided, at least partially, in the receptacle 3 .
  • the expansion mandrel 6 is guided within the ram 5 and is in particular movable independently of the ram 5 on the same axis 7 .
  • the device 1 also has a reduction die 4 which is arranged at one end of the device 1 opposite the engagement opening of the device, where the ram 5 and of the expansion mandrel 6 are positioned.
  • the reduction die 4 has an opening 18 with a tapering or reducing cross section (for example in the manner of a cone 19 or a chamfer), with the workpiece being provided (at least in the region to be formed) with a starting diameter which is greater than the smallest cross section of the reduction die.
  • the device 1 may be designed such that it is heated or can be warmed in order to enable forming at relatively high temperatures.
  • components of the device 1 may be brought up to corresponding temperatures for example by means of induction, a flow of a heating medium through the device 1 , electrical heating elements etc.
  • the hollow body 2 may be placed into the receptacle 3 having already been pre-warmed. It is additionally possible for at least one element of the group comprising receptacle 3 , reduction die 4 , ram 5 and expansion mandrel 6 to be heated or warmed.
  • FIG. 2 schematically shows the cross section through the device 1 during a first process, with the ram 5 being in engagement with the hollow body 2 and pushing the latter towards the reduction die 4 such that, in the first portion 9 , the starting diameter of the hollow body 2 is reduced to a first diameter 10 .
  • the ram 5 and expansion mandrel 6 are moved together and push the hollow body 2 through the reduction die 4 together.
  • FIG. 3 schematically shows the cross section of the device 1 for axially forming the elongate hollow body 2 during a second process, with the expansion mandrel 6 now being moved independently of the ram 5 and, in a second portion 11 of the elongate hollow body 2 , expanding the workpiece 2 to a second diameter 12 which is greater than the starting diameter of the workpiece.
  • the ram 5 is stopped in terms of its axial movement.
  • a feed motion limiter 8 for example a correspondingly controlled motor, shown only schematically here, serves to sop the axial movement of the ram 5 .
  • the expansion mandrel 6 is moved until it abuts against the reduction die 4 , such that a calibrated transition between the first diameter 10 and the second diameter 12 of the hollow body 2 is obtained.
  • the receptacle 3 and the reduction die 4 To remove the workpiece 2 , it is possible firstly for the receptacle 3 and the reduction die 4 to be opened; it is secondly possible for the reduction die 4 to be released from the receptacle 3 such that the finished hollow body 2 may be removed from the receptacle 3 along the axis 7 .
  • the ram 5 and/or the expansion mandrel 6 may be used as an ejector. It is however in particular also possible for the ram 5 and expansion mandrel 6 to be retracted into the starting position, and the workpiece removed either through the opened reduction die 4 or through the opened receptacle 3 .
  • FIG. 4 now shows an exemplary field of use of the hollow profiles 2 produced in this way, in a motor vehicle 13 .
  • the hollow profiles are used for example as so-called longitudinal shafts 15 in the drivetrain 14 of a motor vehicle 13 , in order to transmit torque, which is generated by a drive, to remote wheels 17 .
US12/667,099 2007-06-29 2007-06-29 Device and method for the axial forming of elongated hollow bodies Abandoned US20100139356A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/005799 WO2009003498A1 (de) 2007-06-29 2007-06-29 Vorrichtung und verfahren zum axialumformen von langgestreckten hohlkörpern

Publications (1)

Publication Number Publication Date
US20100139356A1 true US20100139356A1 (en) 2010-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/667,099 Abandoned US20100139356A1 (en) 2007-06-29 2007-06-29 Device and method for the axial forming of elongated hollow bodies

Country Status (7)

Country Link
US (1) US20100139356A1 (ko)
EP (1) EP2167250B1 (ko)
JP (1) JP5192038B2 (ko)
KR (1) KR101188576B1 (ko)
CN (1) CN101754820B (ko)
AT (1) ATE512730T1 (ko)
WO (1) WO2009003498A1 (ko)

Cited By (5)

* Cited by examiner, † Cited by third party
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CN106955941A (zh) * 2017-05-20 2017-07-18 郭远军 一种缩口加工方法及其所使用的缩口模具和应用
CN107008816A (zh) * 2017-05-20 2017-08-04 郭远军 一种缩口加工方法及其所使用的缩口模具和应用
US10843246B2 (en) 2014-12-17 2020-11-24 American Axle & Manufacturing, Inc. Method of manufacturing a tube and a machine for use therein
US10913096B2 (en) * 2017-11-10 2021-02-09 Nanchang Hangkong University (NCHU) Method and former for necking and thickening tube end
US11590547B2 (en) 2016-03-11 2023-02-28 Nippon Steel Corporation Method of manufacturing variable wall thickness steel pipe and variable wall thickness steel pipe

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JP2011194469A (ja) * 2010-02-23 2011-10-06 Jfe Steel Corp 高強度電縫鋼管の口絞り縮径加工方法および加工部品
KR101311691B1 (ko) * 2011-10-17 2013-09-30 주식회사 센트랄디티에스 일체형 중공 드라이브 샤프트의 성형장치 및 성형방법
CN103612069A (zh) * 2013-10-24 2014-03-05 丽水市信毅单向器有限公司 单向器的空心轴的制作方法
CN107866496B (zh) * 2016-09-28 2019-07-09 中国航空制造技术研究院 一种用于干涉抽钉双锥度衬套的下锥成形工具及方法
JP7277706B2 (ja) * 2019-01-17 2023-05-19 日本製鉄株式会社 差厚管の製造方法及び差厚管の製造装置
CN112170607B (zh) * 2020-08-25 2023-01-20 重庆俊辰希机械制造有限公司 一种减震器定位管的冷加工工艺
DE102020132822B4 (de) * 2020-12-09 2023-03-23 Benteler Steel/Tube Gmbh Verfahren zur Herstellung eines inneren Anschlags in einem Rohrbauteil

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US4722216A (en) * 1982-02-08 1988-02-02 Grotnes Metalforming Systems, Inc. Radial forging method
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US7219522B2 (en) * 2002-07-26 2007-05-22 Taisai Kako Co., Ltd. Oval cross section metal tube producing device and producing method
US7681426B2 (en) * 2005-08-25 2010-03-23 Arcelormittal Tubular Products Canada Inc. Unitary rear axle housing and method for manufacturing same

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DE3506220A1 (de) * 1985-02-22 1986-08-28 Laeis GmbH, 5500 Trier Verfahren zum herstellen von rohren mit dickwandigen enden durch kaltumformen eines rohrfoermigen rohlings
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Publication number Priority date Publication date Assignee Title
US2002966A (en) * 1932-11-12 1935-05-28 Charles H Bickell Method of and apparatus for extruding tubes and other elongated shapes
US3177688A (en) * 1961-06-06 1965-04-13 Kralowetz Bruno Forging machine for the internal profiling of tubular workpieces, particularly of barrels for firearms
US3243986A (en) * 1963-10-01 1966-04-05 Halstead Metal Products Inc Production of large diameter thin-walled tubing
US3404552A (en) * 1965-05-17 1968-10-08 Reynolds Metals Co Billet piercing and extrusion
US3893321A (en) * 1973-12-04 1975-07-08 Gfm Fertigungstechnik Swaging machine
US3950976A (en) * 1974-12-12 1976-04-20 General Electronic Seet - G. E. S. Method and device for forming tubes
US4722216A (en) * 1982-02-08 1988-02-02 Grotnes Metalforming Systems, Inc. Radial forging method
US5992197A (en) * 1997-03-28 1999-11-30 The Budd Company Forming technique using discrete heating zones
US6837091B2 (en) * 2001-04-11 2005-01-04 Gkn Automotive Gmbh Tube drawing method and device
US7219522B2 (en) * 2002-07-26 2007-05-22 Taisai Kako Co., Ltd. Oval cross section metal tube producing device and producing method
US20060218985A1 (en) * 2003-04-11 2006-10-05 Kazuhito Kenmochi Tube with high dimensional accuracy, and method and device for manufacturing the tube
US7681426B2 (en) * 2005-08-25 2010-03-23 Arcelormittal Tubular Products Canada Inc. Unitary rear axle housing and method for manufacturing same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10843246B2 (en) 2014-12-17 2020-11-24 American Axle & Manufacturing, Inc. Method of manufacturing a tube and a machine for use therein
US10864566B2 (en) 2014-12-17 2020-12-15 American Axle & Manufacturing, Inc. Method of manufacturing a tube and a machine for use therein
US10882092B2 (en) 2014-12-17 2021-01-05 American Axle & Manufacturing, Inc. Method of manufacturing a tube and a machine for use therein
US11697143B2 (en) 2014-12-17 2023-07-11 American Axle & Manufacturing, Inc. Method of manufacturing two tubes simultaneously and machine for use therein
US11590547B2 (en) 2016-03-11 2023-02-28 Nippon Steel Corporation Method of manufacturing variable wall thickness steel pipe and variable wall thickness steel pipe
CN106955941A (zh) * 2017-05-20 2017-07-18 郭远军 一种缩口加工方法及其所使用的缩口模具和应用
CN107008816A (zh) * 2017-05-20 2017-08-04 郭远军 一种缩口加工方法及其所使用的缩口模具和应用
US10913096B2 (en) * 2017-11-10 2021-02-09 Nanchang Hangkong University (NCHU) Method and former for necking and thickening tube end

Also Published As

Publication number Publication date
CN101754820A (zh) 2010-06-23
WO2009003498A1 (de) 2009-01-08
KR101188576B1 (ko) 2012-10-05
EP2167250A1 (de) 2010-03-31
KR20100025585A (ko) 2010-03-09
EP2167250B1 (de) 2011-06-15
ATE512730T1 (de) 2011-07-15
CN101754820B (zh) 2012-12-12
JP2010531735A (ja) 2010-09-30
JP5192038B2 (ja) 2013-05-08

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Owner name: GKN DRIVELINE INTERNATIONAL GMBH,GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BROCHHEUSER, ULRICH;GEHRKE, ANDREAS;REEL/FRAME:023890/0852

Effective date: 20100106

STCB Information on status: application discontinuation

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