EP1320433A1 - Procede pour la production d'un arbre creux, notamment d'un arbre a cames, et arbre creux produit selon ce procede - Google Patents

Procede pour la production d'un arbre creux, notamment d'un arbre a cames, et arbre creux produit selon ce procede

Info

Publication number
EP1320433A1
EP1320433A1 EP01986277A EP01986277A EP1320433A1 EP 1320433 A1 EP1320433 A1 EP 1320433A1 EP 01986277 A EP01986277 A EP 01986277A EP 01986277 A EP01986277 A EP 01986277A EP 1320433 A1 EP1320433 A1 EP 1320433A1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
cams
machine elements
ihu
function
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Withdrawn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
EP01986277A
Other languages
German (de)
English (en)
Inventor
Bodo Furchheim
Franz-Josef Schleifstein
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.)
Salzgitter Antriebstechnik GmbH and Co KG
Original Assignee
Salzgitter Antriebstechnik GmbH and Co KG
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 DE2000149047 external-priority patent/DE10049047C2/de
Priority claimed from DE2000149048 external-priority patent/DE10049048C1/de
Application filed by Salzgitter Antriebstechnik GmbH and Co KG filed Critical Salzgitter Antriebstechnik GmbH and Co KG
Publication of EP1320433A1 publication Critical patent/EP1320433A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • 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
    • B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
    • B21D53/845—Making camshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by expanding or crimping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/02—Camshafts
    • 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
    • Y10T29/17—Crankshaft making apparatus
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49909—Securing cup or tube between axially extending concentric annuli
    • Y10T29/49911—Securing cup or tube between axially extending concentric annuli by expanding inner annulus
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ
    • Y10T403/4949—Deforming component is inserted section

Definitions

  • the invention relates to a method for producing a hollow shaft, in particular camshaft, according to the hydroforming process (IHU), whereby on the outer lateral surface of the hollow shaft, adapted to its use, cams and / or machine elements in a non-positive and / or positive position and position are distributed in a functionally appropriate manner.
  • the machine elements can be, for example, gear wheels, drives, cams or the like.
  • a preferred area of application is camshafts for motor vehicle engines.
  • the object of the invention is to make the method described in the introduction more rational.
  • Claims 2 to 1 1 show advantageous refinements of the method.
  • a hollow shaft produced according to the invention is defined in claim 12;
  • Claims 13 to 18 relate to expedient configurations of this hollow shaft.
  • machine elements for example gearwheels and / or cams
  • gearwheels and / or cams are arranged on the hollow shaft and pushed onto the hollow shaft in their function-related position.
  • This hollow shaft pre-equipped in this way, is inserted into an hydroforming tool.
  • a plunger is moved in the axial direction at least against one end of the hollow shaft while the pressure medium of the hydroforming tool works simultaneously.
  • the hollow shaft is expanded relatively strongly at those locations where no machine element is positioned on the outside, while in the area where a machine element is positioned, it is non-positively and positively connected by the internal pressure.
  • the hollow shaft with the inserted element is compressed, thereby thickening the material and positioning the element in the hollow shaft in a force-fitting and form-fitting manner and thus serving as a conclusion due to its design adapted to the use of the hollow shaft the hollow shaft and connection to other units.
  • this compression causes material of the hollow shaft to be brought in front of and / or behind it. So that the element is locked in the axial direction. If an axially continuous bore is made in the element, then the pressure becomes effective on both sides of this element.
  • the hollow shaft preferably as a camshaft, i.e. When it is mounted, connected to the corresponding units of a motor or other drive elements, the element is mechanically separated with the hollow shaft and a flat surface is created. For example, a hole or a thread is made in this.
  • the hollow shaft it is also possible, adapted to the function of the hollow shaft, to mechanically process the element after the connection to the hollow shaft in such a way that a bolt or a threaded bolt remains.
  • the shape of the element can also be prefabricated before it is introduced and connected to the hollow shaft.
  • the element forms a unit with the stamp of the hydroforming tool, which acts axially at the same time as the pressure medium, and protrudes into the hollow shaft. After completing the IHU procedure, the stamp with the element is pulled out. Depending on the design of the hydroforming tool and the diameter of the element, the end of the hollow shaft is given the shape required for its function. The final dimension is produced by known mechanical processing.
  • the element remains in the hollow shaft, the element is locked in the axial direction, that is to say connected non-positively and positively to the hollow shaft. It may also be advantageous to reduce the diameter of the element between its two ends, which improves the connection to the hollow shaft.
  • the hollow shaft it may be advantageous to separate the hollow shaft on the end face in the region of the element after the element has been pressed in, so that a flat surface is produced.
  • the cutting is expediently carried out by cutting.
  • An axially extending thread can subsequently be introduced into this surface in order to fasten any part or machine element.
  • the advantage of the method according to the invention is that two highly productive methods, hydroforming and upsetting, are combined at the same time in one method using machine elements that are easy to manufacture and can be connected to the hollow shaft. This results in very short manufacturing times.
  • a further advantage is that the method and the special design of the machine elements, in particular the elements to be inserted into the hollow shaft, mean that very little reworking is required.
  • the hollow shafts produced by the process, in particular cam shafts for motor vehicle engines, are extremely light and are inexpensive.
  • FIG. 2 partial section through an IHU tool with inserted
  • FIG. 4 partial section through a hollow shaft with an inserted element and attached cams
  • FIGS. 1 a and 1 b show how one end of a hollow shaft is manufactured according to the prior art.
  • the hollow shaft 1 is treated in the region of its one end by a kneading method known per se or also by upsetting such that if the outer diameter D A of the hollow shaft 1 remains, the inner diameter Dj of the hollow shaft 1 is reduced to the diameter D B of a bore 2. This means that material accumulation occurs in the end area.
  • This upsetting takes place by heating, hammering or in another forming process. Either the bore 2 is made during this process and then has to be reworked mechanically, or the end of the hollow shaft 1 is completely closed and the bore 2 or a thread 3 is then made after the end face has been machined.
  • a hollow shaft 1 is inserted into a known hydroforming tool 4, the outer diameter D A of which corresponds to the inner diameter of the tool 4.
  • an element 5 whose outer diameter D E is slightly smaller than the inner diameter D
  • the hollow shaft 1 inserted into the hollow shaft 1 at a predetermined location.
  • a plunger 6 of the tool 4 is moved axially under high pressure, with simultaneous action of a pressure medium in the hollow shaft 1, against its end face.
  • the material of the hollow shaft 1 compresses in such a way that the element 5 is enclosed by the material of the hollow shaft 1 to such an extent that the previous inner diameter D f of the hollow shaft 1 is reduced to D ,,.
  • the element 5 is thus connected to the hollow shaft 1 in a positive and / or non-positive manner under high pressure.
  • An end section is cut off in a known manner on a line 7, preferably by means of cut-off grinding, and a flat surface is formed, into which, for example, a thread is introduced.
  • FIGS. 3a to 3c Different embodiments of the element 5 are shown in FIGS. 3a to 3c.
  • the material of the hollow shaft 1 is compressed in front of and behind the element 5 and the inner diameter D, of the hollow shaft 1 is reduced to D ⁇ .
  • the stamp 6 of the IHU tool presses in the direction of the arrow.
  • the pressure medium acts through the bore 8 on both sides of the element 5, although it only penetrates from one side.
  • This design of the element 5 is particularly advantageous if the element 5 is arranged further away from the end of the hollow shaft 1.
  • the stamp 6 acts on one side and the printing medium on the other side in order to achieve the material accumulation.
  • FIG. 4 shows how a machine element 9 or cam is simultaneously applied to the hollow shaft 1 in the area of the element 5.
  • the material is piled up on both sides.
  • D A its outer diameter
  • the machine element 9 applied there is simultaneously connected to the hollow shaft 1 in a force-fitting and / or positive manner.
  • This example shows how previously separate procedures can be carried out in a single IHU procedure. This is an advantage of the method according to the invention.
  • Figure 5 shows another embodiment of the method.
  • the punch 6, which at the same time pushes acting axially with the pressure medium, is firmly connected in its front part with the otherwise separate element 5, the punch means 6 is formed as a front side member 5.
  • the material flow resulting from the method is limited by the element 5 ', the outside diameter of which is ⁇ the inside diameter of the hollow shaft 1, when thickening or compressing inwards, and thus material is locally outwards but also inwards in front of the element 5' brought.
  • the complete pressure stamp 6, 5 1 is removed from the hollow shaft 1 after the IHU process has ended.
  • the stamp 6 can, however, also be connected to the hollow shaft 1 in a non-positive and positive manner by a corresponding design of the element 5 'and the hydroforming tool and is mechanically separated from the element 5' after the end of the process.
  • the elements 5 and machine elements 9 or cams are produced in a known manner in a preceding process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne un procédé pour la production d'un arbre creux, notamment d'un arbre à cames, selon le procédé de formage par haute pression interne. Selon ce procédé, on applique par liaison de force ou de forme sur la surface de chemise externe de l'arbre creux, conformément à l'utilisation de ce dernier, des cames ou des éléments de machine répartis en position conformément à leur fonction. L'invention concerne également un arbre creux produit selon ce procédé. L'invention vise à rationaliser le procédé. A cet effet, (a) les cames ou les éléments de machine nécessaires à la fonction de l'arbre creux sont montés et positionnés à l'emplacement nécessaire sur l'arbre creux lors du placement de l'arbre creux (1) et un élément (5) à diamètre extérieur à peu près égal au diamètre intérieur de l'arbre creux est positionné dans au moins une extrémité de l'arbre creux. L'arbre creux est alors placé, avec les cames ou les éléments de machine montés sur lui et l'élément inséré, dans un outil de formage par haute pression interne. Après la fermeture de l'outil de formage, un milieu sous la haute pression nécessaire est amené à agir dans l'arbre creux.
EP01986277A 2000-09-29 2001-09-24 Procede pour la production d'un arbre creux, notamment d'un arbre a cames, et arbre creux produit selon ce procede Withdrawn EP1320433A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10049048 2000-09-29
DE2000149047 DE10049047C2 (de) 2000-09-29 2000-09-29 Verfahren zum Herstellen einer Nockenwelle und danach hergestellte Nockenwelle
DE2000149048 DE10049048C1 (de) 2000-09-29 2000-09-29 Verfahren zum Herstellen von Enden für Hohlwellen
DE10049047 2000-09-29
PCT/DE2001/003666 WO2002028564A1 (fr) 2000-09-29 2001-09-24 Procede pour la production d'un arbre creux, notamment d'un arbre a cames, et arbre creux produit selon ce procede

Publications (1)

Publication Number Publication Date
EP1320433A1 true EP1320433A1 (fr) 2003-06-25

Family

ID=26007254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01986277A Withdrawn EP1320433A1 (fr) 2000-09-29 2001-09-24 Procede pour la production d'un arbre creux, notamment d'un arbre a cames, et arbre creux produit selon ce procede

Country Status (6)

Country Link
US (1) US6961998B2 (fr)
EP (1) EP1320433A1 (fr)
JP (1) JP2004510585A (fr)
AU (1) AU2002223431A1 (fr)
DE (1) DE10194184D2 (fr)
WO (1) WO2002028564A1 (fr)

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US8881494B2 (en) 2011-10-11 2014-11-11 Polymer-Wood Technologies, Inc. Fire rated door core
US9375899B2 (en) 2012-06-29 2016-06-28 The Intellectual Gorilla Gmbh Gypsum composites used in fire resistant building components
US9243444B2 (en) 2012-06-29 2016-01-26 The Intellectual Gorilla Gmbh Fire rated door
US8915033B2 (en) 2012-06-29 2014-12-23 Intellectual Gorilla B.V. Gypsum composites used in fire resistant building components
US9890083B2 (en) 2013-03-05 2018-02-13 The Intellectual Gorilla Gmbh Extruded gypsum-based materials
US9475732B2 (en) 2013-04-24 2016-10-25 The Intellectual Gorilla Gmbh Expanded lightweight aggregate made from glass or pumice
CN111003958A (zh) 2013-04-24 2020-04-14 知识产权古里亚有限责任公司 挤出的轻质热绝缘水泥基材料
WO2015057978A2 (fr) 2013-10-17 2015-04-23 Intellectual Gorilla B.V. Ciment léger d'isolation thermique pour hautes températures et matériaux à base de silice
CN106573839A (zh) 2014-02-04 2017-04-19 知识产权古里亚有限责任公司 基于轻质隔热水泥的材料
US11072562B2 (en) 2014-06-05 2021-07-27 The Intellectual Gorilla Gmbh Cement-based tile
BR112016028409B1 (pt) 2014-06-05 2022-09-20 The Intellectual Gorilla Gmbh Materiais à base de cimento extrusável e método para fabricar um material à base de cimento extrusável
US20170241299A1 (en) * 2016-02-19 2017-08-24 GM Global Technology Operations LLC Powertrain shaft assembly with core plug and method of manufacturing a shaft assembly
US9970476B2 (en) 2016-02-19 2018-05-15 GM Global Technology Operations LLC Crankshaft assembly with core plug and method of manufacturing a crankshaft assembly
CN108087493A (zh) * 2016-11-23 2018-05-29 通用汽车环球科技运作有限责任公司 复合材料交通工具轴组件

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Also Published As

Publication number Publication date
US6961998B2 (en) 2005-11-08
WO2002028564A1 (fr) 2002-04-11
JP2004510585A (ja) 2004-04-08
DE10194184D2 (de) 2003-09-04
WO2002028564A8 (fr) 2002-07-18
AU2002223431A1 (en) 2002-04-15
US20040034975A1 (en) 2004-02-26

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