EP0106751A1 - Procédé de fabrication de pièces cylindriques de diamètres progressivement croissants et dispositif pour sa mise en oeuvre - Google Patents

Procédé de fabrication de pièces cylindriques de diamètres progressivement croissants et dispositif pour sa mise en oeuvre Download PDF

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Publication number
EP0106751A1
EP0106751A1 EP83401926A EP83401926A EP0106751A1 EP 0106751 A1 EP0106751 A1 EP 0106751A1 EP 83401926 A EP83401926 A EP 83401926A EP 83401926 A EP83401926 A EP 83401926A EP 0106751 A1 EP0106751 A1 EP 0106751A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
blank
dies
support spout
support
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.)
Withdrawn
Application number
EP83401926A
Other languages
German (de)
English (en)
French (fr)
Inventor
Yves Pencé
Jean Claude Piercy
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
Publication of EP0106751A1 publication Critical patent/EP0106751A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Definitions

  • cylindrical parts of progressively increasing diameters is meant, in the present description, a part, generally of circular section but which could be of polygonal or other section, comprising an internal drilling, the internal and / or external diameter of the part going growing from its end.
  • This part can then be transformed into a hollow part, that is to say a part whose internal diameter of the central part is greater than the internal diameters of the two end parts, by any known method in particular by drawing and shrinking .
  • FR-A-1 259 364 describes a similar process in which the member forcing the tube through the necking die on the mandrel, which member may be the draw spindle of the drawing bench, bears against the end of the tube which is folded down to form a support collar.
  • FR-A-2 369 027 also proposes to fold down the anterior end of the tube, this folded part forming a support for the necked mandrel used as a pushing member, as in GB-A-606 306 to force the tube through the shrinking or stretching die.
  • the object of the present invention is to form the cylindrical part of progressively increasing internal and / or external diameters by shrinking and drawing and it is characterized in which, to form on the internal periphery and in the vicinity of the front end of the blank to stretch a support spout substantially perpendicular to the axis of the part on which the pushing force of the mandrel is exerted, the end of the blank on the end of the mandrel by pushing the blank and the mandrel held together in axial displacement through one or more necking dies.
  • connection to the axial displacement between the blank and the mandrel is ensured by eclipsable stops which are put out of action after the formation of the support spout, the necking and / or the stretching of the blank then being performed on the same mandrel.
  • the present invention also relates to a device for implementing the method comprising in known manner at least one die, a mandrel and a press pushing said mandrel through said die characterized in that means integral with the mandrel and / or the press are designed to exert a push behind the blank engaged on the mandrel.
  • said means exerting a thrust behind the blank consist of eclipsable stops.
  • the eclipsing of the stops can be achieved by spacing parts in the form of half-sleeves surrounding the mandrel and bearing on the press plate.
  • the eclipsing is obtained by retraction of the stop.
  • the mandrel is slidably mounted on the press plate forming a fixed stop with the dies pushed by jacks towards the fixed plate, the deactivation of the stop is ensured by an advance of the mandrel.
  • the reference 1 designates a known die whose longitudinal profile is conventional, the diameter corresponding to the pass to be produced.
  • Reference 2 designates the mandrel and reference 3 the press plate.
  • the cylindrical part to be obtained has an end part 4 having an internal diameter d 1 and an external diameter D 1 , a part 5 following it having an internal diameter d 2 greater than d l , the two internal surfaces being joined together per year.
  • the cylindrical blank 9 has, for example, an internal diameter equal to d 2 and an external diameter equal to D 2 , that is to say equal respectively and in a known manner to the largest internal and external diameters of the part to be achieve.
  • the length of the blank is determined in a known manner so that the volume of the metal is equal to the volume of the part to be obtained increased by the falls.
  • the mandrel 2 has a shape corresponding to the internal bore of the part to be obtained. It has a nose 10 of diameter d 1 slightly longer than part 4 if the support spout which will be described below does not form part of the geometry of the part and must be removed by machining. Following this nose there is a frustoconical part 11 corresponding to part 6 and a body 12 of diameter d 2 whose length is greater than that of parts 5, 7 and 8 of the part. In the figures and as a simple illustrative example, the mandrel 2 is shown integral with the press plate 3.
  • the blank 9 being threaded on the mandrel and to achieve by constriction the support spout 13 against which the mandrel driven by the press plate will push, we interpose between the rear end of the blank 9 and the press plate 3 pieces forming stops 14 constituted by half-sleeves surrounding the mandrel.
  • the length of the stops 14 is such that the blank 9 protrudes beyond the end face 15 of the mandrel.
  • the front end of the blank is shrunk in a die having a diameter D 1 by pushing the latter on its rear face from the press plate 3, by means of the stops 14.
  • L he operation can be carried out in several passes with dies of decreasing diameters.
  • the metal is pushed concentrically at the same time as it flows forward due to the reduction in diameter and it comes to form a support spout 13 at the periphery of the front face 15 of the mandrel.
  • this support spout may differ from that shown felt but it still has a bearing surface substantially perpendicular to the axis for the surface 15.
  • This first phase of constriction with thrust exerted behind the blank can be continued to achieve a certain length of the part 4 of diameter D 1 but , due to the creep of the metal, the support spout 13 takes off from the face 15 of the mandrel 2.
  • the process can ultimately be used for parts with constant internal and external diameters that one would like to stretch on a mandrel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Metal Extraction Processes (AREA)
EP83401926A 1982-10-08 1983-09-30 Procédé de fabrication de pièces cylindriques de diamètres progressivement croissants et dispositif pour sa mise en oeuvre Withdrawn EP0106751A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8216865 1982-10-08
FR8216865A FR2534159B1 (fr) 1982-10-08 1982-10-08 Procede de fabrication de pieces cylindriques, notamment de pieces creuses, et machine pour sa mise en oeuvre

Publications (1)

Publication Number Publication Date
EP0106751A1 true EP0106751A1 (fr) 1984-04-25

Family

ID=9278084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401926A Withdrawn EP0106751A1 (fr) 1982-10-08 1983-09-30 Procédé de fabrication de pièces cylindriques de diamètres progressivement croissants et dispositif pour sa mise en oeuvre

Country Status (4)

Country Link
EP (1) EP0106751A1 (ja)
JP (1) JPS5997713A (ja)
BR (1) BR8305563A (ja)
FR (1) FR2534159B1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188086A2 (en) * 1985-01-12 1986-07-23 STEVENS & BULLIVANT LIMITED Manufacture of tubular components
EP0663248A1 (en) * 1994-01-12 1995-07-19 The Torrington Company Method of making a camshaft
WO2009003498A1 (de) 2007-06-29 2009-01-08 Gkn Driveline International Gmbh Vorrichtung und verfahren zum axialumformen von langgestreckten hohlkörpern
CN104275358A (zh) * 2014-09-22 2015-01-14 吉林利源精制股份有限公司 一种铝合金内变径无缝管的挤压成型方法
CN107443018A (zh) * 2017-08-07 2017-12-08 丹阳市云孚科技有限公司 一种压力容器罐生产设备及生产方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB606306A (en) * 1946-01-11 1948-08-11 Head Wrightson & Co Ltd Improvements in the manufacture of tubes
FR1259364A (fr) * 1958-01-07 1961-04-28 T I Aluminium Ltd Perfectionnements à la fabrication des tubes
FR1458820A (fr) * 1964-11-18 1966-03-04 Tube Mill Holding Sa Procédé de laminage de tubes sans soudure au banc-poussant
FR1457184A (fr) * 1965-12-09 1966-07-08 Demag Ag Procédé et installation pour la fabrication de tubes de grandes longueurs ainsi que tubes conformes à ceux ainsi obtenus
FR2369027A1 (fr) * 1976-10-29 1978-05-26 Tubes Cie Indle Cale Piece tubulaire dont les diametres et les epaisseurs ne sont pas constants sur toute leur longueu
DE2806368A1 (de) * 1978-02-10 1979-08-16 Mannesmann Ag Verfahren zum kaltziehen von rohren ueber eine ziehstange und anordnung zur durchfuehrung des verfahrens
FR2430277A1 (fr) * 1978-07-06 1980-02-01 Robur Werke Zittau Veb Procede pour fabriquer par fluage sous pression un corps metallique creux de revolution
FR2473916A1 (fr) * 1980-01-22 1981-07-24 Tubes Cie Indle Cale Procede de faconnage a froid d'un arbre tubulaire dont les extremites ont un diametre interieur calibre inferieur a celui de sa partie centrale

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB606306A (en) * 1946-01-11 1948-08-11 Head Wrightson & Co Ltd Improvements in the manufacture of tubes
FR1259364A (fr) * 1958-01-07 1961-04-28 T I Aluminium Ltd Perfectionnements à la fabrication des tubes
FR1458820A (fr) * 1964-11-18 1966-03-04 Tube Mill Holding Sa Procédé de laminage de tubes sans soudure au banc-poussant
FR1457184A (fr) * 1965-12-09 1966-07-08 Demag Ag Procédé et installation pour la fabrication de tubes de grandes longueurs ainsi que tubes conformes à ceux ainsi obtenus
FR2369027A1 (fr) * 1976-10-29 1978-05-26 Tubes Cie Indle Cale Piece tubulaire dont les diametres et les epaisseurs ne sont pas constants sur toute leur longueu
DE2806368A1 (de) * 1978-02-10 1979-08-16 Mannesmann Ag Verfahren zum kaltziehen von rohren ueber eine ziehstange und anordnung zur durchfuehrung des verfahrens
FR2430277A1 (fr) * 1978-07-06 1980-02-01 Robur Werke Zittau Veb Procede pour fabriquer par fluage sous pression un corps metallique creux de revolution
FR2473916A1 (fr) * 1980-01-22 1981-07-24 Tubes Cie Indle Cale Procede de faconnage a froid d'un arbre tubulaire dont les extremites ont un diametre interieur calibre inferieur a celui de sa partie centrale

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188086A2 (en) * 1985-01-12 1986-07-23 STEVENS & BULLIVANT LIMITED Manufacture of tubular components
EP0188086A3 (en) * 1985-01-12 1987-04-08 STEVENS & BULLIVANT LIMITED Manufacture of tubular components
EP0663248A1 (en) * 1994-01-12 1995-07-19 The Torrington Company Method of making a camshaft
WO2009003498A1 (de) 2007-06-29 2009-01-08 Gkn Driveline International Gmbh Vorrichtung und verfahren zum axialumformen von langgestreckten hohlkörpern
CN101754820B (zh) * 2007-06-29 2012-12-12 Gkn动力传动系统国际有限责任公司 用于细长的空心件的轴向成形的装置和方法
CN104275358A (zh) * 2014-09-22 2015-01-14 吉林利源精制股份有限公司 一种铝合金内变径无缝管的挤压成型方法
CN107443018A (zh) * 2017-08-07 2017-12-08 丹阳市云孚科技有限公司 一种压力容器罐生产设备及生产方法

Also Published As

Publication number Publication date
FR2534159B1 (fr) 1986-05-16
BR8305563A (pt) 1984-05-15
JPS5997713A (ja) 1984-06-05
FR2534159A1 (fr) 1984-04-13

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