WO2012065739A1 - Procédé et dispositif pour produire un élément structural creux et élément structural creux - Google Patents

Procédé et dispositif pour produire un élément structural creux et élément structural creux Download PDF

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Publication number
WO2012065739A1
WO2012065739A1 PCT/EP2011/005783 EP2011005783W WO2012065739A1 WO 2012065739 A1 WO2012065739 A1 WO 2012065739A1 EP 2011005783 W EP2011005783 W EP 2011005783W WO 2012065739 A1 WO2012065739 A1 WO 2012065739A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
hollow
wall
hollow component
hydroforming
Prior art date
Application number
PCT/EP2011/005783
Other languages
German (de)
English (en)
Inventor
Frank Schieck
Jens Gentzen
Robert Reichelt
Alexander Paul
Daniel Paul
Jürgen MEUSEL
Original Assignee
Thyssenkrupp Presta Teccenter Ag
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 Thyssenkrupp Presta Teccenter Ag filed Critical Thyssenkrupp Presta Teccenter Ag
Priority to EP11787613.6A priority Critical patent/EP2640937A1/fr
Publication of WO2012065739A1 publication Critical patent/WO2012065739A1/fr

Links

Classifications

    • 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
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
    • B21D53/845—Making camshafts
    • 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
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features

Definitions

  • the present invention relates to a method for producing a hollow component, in particular a camshaft for a piston engine, as well as a device for producing a hollow component and a corresponding hollow component.
  • Camshafts for piston lifting machines are u. a. manufactured as hollow components and stored in modern internal combustion engines usually in the cylinder head.
  • the position of the cylinder head bolts for fixing the cylinder head on the engine block is given due to the mechanical-thermal load.
  • the cylinder head bolts can be covered by built-in camshaft, so that the camshaft must be removed to reach the cylinder head bolts and mount the cylinder head.
  • screw releases which are essentially indentations or sipes which allow free access of a tool to the cylinder head bolts, even when the camshaft is installed.
  • camshaft is proposed with indentations, said camshaft is formed as a hollow member and the corresponding camshaft tube in the pipe wall pressed, not having the tube circumferential indentations.
  • the pipe wall does not protrude beyond the predetermined pipe diameter and forms a so-called erenkegang.
  • a comparable camshaft is also known from the document CH 695 789 A5.
  • the fferenka » be pressed in a separate manufacturing step before pushing and fixing the cam in the pipe wall.
  • several forming dies are mounted movably in holding tools radially to the camshaft.
  • the camshaft is produced by hydroforming, wherein in a first step, the tool is closed and then a punch is pressed into the workpiece to form a fferenkegang. In this case, it is necessary that an internal pressure in the component is maintained as a holding force. Furthermore, the shape of the punch is limited in terms of freedom in the tool and the transition region between the screw release and the rest of the camshaft is difficult to form.
  • the object is achieved by a method for producing a hollow component, in particular a camshaft for a Kolbenhubmaschine, from a hollow semi-finished by hydroforming, wherein a wall portion of the semifinished product is plastically deformed before hydroforming.
  • a wall portion of the semifinished product is plastically deformed before hydroforming.
  • opposite wall portions of the component will be formed by the subsequent hydroforming.
  • the object is achieved according to the invention by a method for producing a hollow component, in particular a camshaft for a Kolbenhubmaschine from a hollow semi-finished product, wherein between the first and second wall sections of the component, a third wall portion of the semifinished product is plastically deformed, and the opposite first and second wall portions are supported during the plastic deformation of the third wall portion.
  • the third wall section of the semifinished product is plastically deformed before hydroforming.
  • the opposite wall sections of the component are formed by the subsequent hydroforming. These opposite wall sections are preferably formed as planar wall sections of the component.
  • the object is achieved according to the invention by a device for producing a hollow component, in particular a camshaft for a Kolbenhubmaschine, from a hollow semi-finished in a tool, wherein the tool has a first and second tool part, which are movable relative to each other and the first Tool part is designed as a forming die for forming the wall portion at Closing the tool, wherein the first or second tool part with respect to a center axis opposite first and second planar mold sections, each extending from a parting plane of the tool in the direction of a closing movement of the tool.
  • the first tool part has the opposing first and second planar mold sections.
  • the first and second planar mold sections each extend from the dividing plane of the tool to a center plane of the tool.
  • the first and second planar mold sections are formed parallel to one another.
  • the first and second planar mold sections each have the same vertical distance from the central axis of the component.
  • the vertical distance of the first and second planar mold sections is a maximum vertical distance from the central axis in the section of the component.
  • the tool is designed as a hydroforming tool with a mold cavity.
  • opposite flat wall sections of the component are formed by the subsequent hydroforming in the region of the dividing plane of the internal high-pressure forming tool.
  • the object is achieved according to the invention by a device for producing a hollow component, in particular a camshaft for a Kolbenhubmaschine, from a hollow semi-finished by hydroforming in a mold cavity of a hydroforming tool, wherein the hydroforming tool has a first and second tool part, the are movable relative to each other and define the mold cavity in a closed position, and the first tool part is formed as a forming die for forming a wall portion when closing the hydroforming tool.
  • the object is achieved according to the invention by a hollow component which extends in the direction of a center axis, wherein at least a portion of the component with respect to the center axis opposite first and second planar wall sections, and in the circumferential direction between the first and second planar wall sections third wall portion is formed, wherein a vertical distance of the third wall portion of the center axis is smaller than a vertical distance of the first and second planar wall portion of the center axis.
  • the first and the second planar wall sections are formed parallel to each other.
  • the first and the second planar wall sections each have the same vertical distance from the center axis.
  • the vertical distance of the first and second planar wall sections is a maximum vertical distance from the center axis in the section.
  • a first plane which is perpendicular to the first and second planar wall sections, is arranged perpendicular to a second plane, which is perpendicular to the third wall section.
  • the first and second planes intersect in the center axis.
  • first and the second planar wall portion are connected in the circumferential direction by an arcuate fourth wall portion.
  • first and the third wall portion and the second and the third wall portion are connected in the circumferential direction respectively by an arcuate fifth wall portion.
  • a perpendicular distance of the arcuate wall sections to the center axis is equal to a maximum vertical distance from the center axis in the section.
  • the exemplary embodiment shows a camshaft, in particular for a piston lifting machine, which comprises a hollow component, wherein the third wall section is formed as a reduced region.
  • FIG. 1 shows schematically the device for producing the hollow component with an internal high-pressure forming tool in the opened state and inserted semi-finished product
  • FIG. 2 shows schematically the device for producing the hollow component with the internal high-pressure forming tool in the closed state and shaped hollow component
  • FIG. 3 is a side view of the device for producing the hollow component in the closed state
  • Fig. 8 is a cross-section of a hollow component according to the prior art.
  • FIG. 1 schematically shows the hydroforming tool 11 for producing the hollow component in the opened state.
  • This schematic representation of the internal high pressure forming tool 11 shows a cross section with inserted hollow semi-finished product H.
  • the semifinished product H is provided as a tubular hollow steel body.
  • the schematic representation of the semifinished product H does not reflect the actual wall thickness.
  • the hydroforming die 11 essentially comprises a first tool part 12 and a second tool part 13.
  • the first tool part 12 is designed as an upper tool with a punch, while the second tool part 13 serves as a lower tool.
  • the first and second tool parts define in their closed position the mold cavity 10, in which the semifinished product H is formed into the hollow component in the form of a camshaft.
  • the first tool part comprises a first mold section 14 and a second mold section Mold portion 15, which extend substantially parallel to each other.
  • the opposing molding surfaces of the mold cavity are formed here as parallel planes. These molding surfaces merge into the further molding surfaces of the mold cavity, forming a stamping region.
  • the punch area of the first tool part 12 deforms the semifinished product H, so that a wall section 3 is formed whose distance from the center axis A is smaller than the distance of the remaining wall sections from this center axis.
  • This wall section 3 is thus designed as a region reduced in cross-section and serves as a screw release area in the case of a correspondingly produced camshaft.
  • FIGS. 1 and 2 The degree of deformation is illustrated in Figures 1 and 2 in the first tool part 12 by the broken line above the molding surface.
  • This broken line corresponds to the theoretical contour of the semifinished product H without a deformation or corresponds to this broken line substantially the inner surface of the tool 11 outside the sortedenokgangs Schemes to be formed.
  • FIGS. 1 and 2 there is a continuous transition from the wall sections 1 and 2 via the wall sections 5 to the wall section 3, wherein the distance of the outer contour of these wall sections to the center axis is always less than or equal to the maximum distance or the exit distance of the outer contour of the semifinished product H to the center axis A.
  • the exemplary embodiment shows a method for producing a hollow component, in particular a camshaft for a piston lifting machine, from a hollow semi-finished product H by hydroforming.
  • a wall section 3 of the semifinished product H is plastically deformed before the internal high-pressure forming.
  • Opposing planar wall sections 1, 2 of the component, the subsequent hydroforming be formed.
  • a hollow component is formed from the semifinished product H, wherein the wall section 3 is formed as a cross-section-reduced region by the plastic deformation.
  • the wall section 3 is formed as a cross-section-reduced region by the plastic deformation.
  • the hydroforming is carried out to form the finished component.
  • the exemplary embodiment also shows the device for producing a hollow component, in particular a camshaft for a piston lifting machine, from a hollow semi-finished product H by hydroforming in a mold cavity 10 of a hydroforming tool 1.
  • the hydroforming tool 1 1 has a first and second tool part 12,13 which are movable relative to each other and define the mold cavity 10 in a closed position.
  • the first tool part 12 is formed as a forming die for forming a wall portion 3 when closing the hydroforming tool.
  • opposite planar wall sections 1, 2 of the component are formed by the subsequent hydroforming in the region of a dividing plane of the hydroforming tool 11.
  • the first tool part 12 has with respect to a center axis A opposite first and second planar mold sections 14,15 for forming the opposite planar wall sections 1, 2.
  • the first and second planar mold sections 14, 15 each extend from the dividing plane E3 of the hydroforming tool.
  • the first and second planar mold sections 14,15 are formed parallel to each other.
  • the first and second planar mold sections 14, 15 each have the same vertical distance from the center axis A of the component.
  • the vertical distance of the first and second planar mold sections 14, 15 is a maximum vertical distance from the center axis A in the section of the component.
  • the hollow component shown extends in the direction of a center axis A, wherein at least a portion of the component with respect to the center axis A opposite first and second planar wall sections 1, 2, and in the circumferential direction between the first and second planar wall sections 1, 2, a third wall section third is trained.
  • a perpendicular distance L3 of the third wall portion 3 from the center axis A is smaller than a perpendicular distance L1, L2 of the first and second planar wall portions 1, 2 from the center axis A.
  • the first and second planar wall sections 1, 2 are formed parallel to each other.
  • the first and the second planar wall sections 1, 2 each have the same vertical distance L1.L2 to the center axis A, wherein the vertical Distance L1.L2 of the first and second planar wall sections 1, 2 is a maximum vertical distance from the center axis A in the section.
  • a first plane E1 is arranged perpendicular to the first and second planar wall sections 1, 2, perpendicular to a second plane E2, which is perpendicular to the third wall section 3.
  • the first and second planes E1.E2 intersect in the center axis A.
  • the first and second planar wall sections 1, 2 are inclined inwards, so that the first plane E1 in each case at an angle of ⁇ 90 ° to the flat wall sections 1, 2 extends.
  • the first and second planar wall sections 1, 2 are connected in the circumferential direction by an arcuate fourth wall section 4.
  • the first and third wall sections 1, 3 and the second and third wall sections 2, 3 in the circumferential direction are each connected by an arcuate fifth wall section 5.
  • a perpendicular distance of the arcuate wall sections 4, 5 to the center axis A is equal to a maximum vertical distance from the center axis A in the section.
  • the arcuate fifth wall portion 5 is formed by the contour of the first tool part 12, as further apparent from Fig. 7.
  • the first tool part 12 is in this case designed such that the outer contour of the component in the region of the deformed third wall section 3 does not exceed the outer contour of the semifinished product H, wherein the transitions between the wall sections in contrast to the prior art shown in FIG. 6 by corresponding radii be formed.
  • the wall portions 1 and 2 are formed substantially in the direction of movement of the first tool part 12 or inclined inwards by a few degrees.
  • FIG. 3 shows a side view of the device according to the embodiment, wherein two portions are shown, in which the third wall portion 3 is deformed by the closing movement of the first tool part 12.
  • FIGS. 1 and 2 thus essentially form sectional views in the mentioned areas.
  • the mold sections 14 and 15 are limited with respect to the center axis A to the range of deformation of the third wall section 3.
  • the center axis A lies in the middle plane (first plane) E1, which represents a symmetrical division plane between the first tool part 12 and the second tool part 13.
  • first plane first plane
  • the mold portions 14 and 15 extend from the plane E1 to the plane E3 so that the division plane around the plane E3 Amount B is offset.
  • the first and second mold sections 14 and 15 thus encompass the center plane of the semifinished product H such that during the plastic deformation of the third wall section 3, the semifinished product can not escape into the gap of the still open, but closing tool.
  • corresponding bulges are prevented and the semi-finished deviates in the direction of the wall sections 5.
  • the dividing plane of the tool 11 extends in the center plane E1, so that in this case there is a symmetrical division of the tool, in particular with respect to the contour of the semifinished product H.
  • FIG. 4 to 6 show the method according to the embodiment in a side view comparable to FIG. 3, but in a sectional view, wherein the simplified explanation for the second tool part 3 is not shown.
  • an initial position of the device is shown according to the embodiment, wherein the semi-finished product H in the second tool part (not shown) is inserted.
  • the tool is closed by the first tool part 12 is moved toward the semi-finished product H, so that the third wall portion 3 is deformed according to a recessed portion.
  • This deformation takes place only with support by the second tool part (not shown) and in particular no internal pressure is applied.
  • the full internal pressure for hydroforming is subsequently applied.
  • the final contour of the component is formed, as shown in Fig. 6.
  • camshaft the production of a camshaft according to the embodiment is shown, wherein both the cross-section reduced area according to the deformed wall portion 3 and the other essential parts of the camshaft are produced in a tool.
  • the cylindrical semifinished product H the cams 15 are attached as separate elements.
  • the first tool part 12 has recesses corresponding to the cam elements to receive the cam elements 15.
  • the cam elements 15 are in this case positioned in the intended relative angular position to each other.
  • the wall portion 3 is deformed as described above and the cam elements 15 are positioned in the tool.
  • the semi-finished product H is deformed such that the cam members 15 are mounted on the camshaft.
  • a bearing 16 for supporting the camshaft in a cylinder head is formed by the inner contour of the tool.
  • the tool is designed as a hydroforming tool and the plastic deformation by the first tool part 12 takes place directly before the hydroforming, the first tool part 12 being part of the internal high-pressure forming tool.
  • a method and a device is proposed in which the tool is provided only for plastic deformation of the wall section 3, wherein the corresponding mold sections support the semifinished product on opposite planes in order to prevent deformation into a gap between the tools. Subsequently, the preformed semi-finished product is removed, and placed in a separate hydroforming and shaped accordingly.
  • the dividing plane E3 is offset by the amount B with respect to the diameter plane of the semifinished product to the tool part 13, as can be seen from the figures.
  • the flat mold sections 14 and 15 thus extend beyond this diameter plane, so that soft transitions to the component can be achieved with a lower overall degree of deformation.
  • a smooth transition between the individual wall sections 1 to 5 is achieved, wherein the distance L3 of the wall section 3 is smaller than the remaining distances L1, L2 from the flat wall sections 1, 2 that face each other.
  • a camshaft is provided as a hollow component in which the anisotropy value of the particle size determination can be markedly increased by better conditions for the forming process, resulting in a lower vertical extension.
  • the better radii transitions additionally increase the torsional strength, so that such a hollow component is well suited for the loads acting on a camshaft.
  • the screw release can be formed by a large-scale training on the corresponding wall portion, so that larger Radenüber Vietnamese can be realized.
  • the production of benkagangs is integrated here in the production of the camshaft, so that no additional step is necessary.
  • the screw release is formed by deformation of the wall section 3 in a simple manner during the closing of the hydroforming tool and the corresponding contour can be formed without internal counterpressure. the.
  • the camshaft can be provided in a simple and cost-effective manner with great constructive freedom.
  • the exemplary embodiment shows a method for producing a hollow component, in particular a camshaft for a piston lifting machine, from a hollow semi-finished product H, wherein a third wall section 3 of the semifinished product H is plastically deformed between opposite first and second wall sections 1, 2 of the component, and the opposite first and second wall portions 1, 2 are supported during the plastic deformation of the third wall portion 3.
  • the hollow component is produced from a hollow semifinished product H by hydroforming, wherein a wall section 3 of the semifinished product H is plastically deformed before hydroforming.
  • the opposite wall sections 1, 2 of the component will be formed the subsequent hydroforming.
  • the embodiment shows an apparatus for producing a hollow component, in particular a camshaft for a Kolbenhubmaschine, from a hollow semi-finished product H in a tool 11, wherein the tool 11 has a first and second tool part 12,13 which are movable relative to each other and the first tool part 12 is designed as a shaping die for forming a wall section 3 when closing the tool, wherein the first or second tool part 12 with respect to a center axis A opposite first and second planar mold sections 14,15, each of a dividing plane E3 of Tool 11 extend starting in the direction of a closing movement of the tool.
  • the first and second planar mold sections 14, 15 each extend from the dividing plane E3 of the tool 11 up to a center plane E1 of the tool 11. Outside the forming section for the third wall section 3, the center plane E1 is the dividing plane of the tool.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour produire dans un moule un élément structural creux, notamment d'un arbre à cames pour une machine à course de piston, une première partie du moule étant réalisée en tant que poinçon de formage et destinée à la mise en forme d'une section de paroi de l'élément structural lors de la fermeture du moule. Lors de la déformation plastique, d'autres sections paroi opposées sont soutenues. Ladite section paroi subit une déformation plastique avant un formage sous haute pression interne.
PCT/EP2011/005783 2010-11-19 2011-11-16 Procédé et dispositif pour produire un élément structural creux et élément structural creux WO2012065739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11787613.6A EP2640937A1 (fr) 2010-11-19 2011-11-16 Procédé et dispositif pour produire un élément structural creux et élément structural creux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010051997.9 2010-11-19
DE201010051997 DE102010051997A1 (de) 2010-11-19 2010-11-19 Verfahren und Vorrichtung zur Herstellung eines hohlen Bauteils und ein hohles Bauteil

Publications (1)

Publication Number Publication Date
WO2012065739A1 true WO2012065739A1 (fr) 2012-05-24

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Family Applications (1)

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PCT/EP2011/005783 WO2012065739A1 (fr) 2010-11-19 2011-11-16 Procédé et dispositif pour produire un élément structural creux et élément structural creux

Country Status (3)

Country Link
EP (1) EP2640937A1 (fr)
DE (1) DE102010051997A1 (fr)
WO (1) WO2012065739A1 (fr)

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303629A1 (de) * 1982-02-26 1983-09-15 Kokan Kako Co., Ltd., Yokohama, Kanagawa Verfahren zum herstellen einer nockenwelle mit mindestens einem exzentrischen nocken
JPH0275421A (ja) * 1988-09-09 1990-03-15 Masanobu Nakamura 突起付きパイプの製造方法
WO1994020234A1 (fr) * 1993-03-03 1994-09-15 Lotus Cars Limited Procede de formage d'elements tubulaires
EP0906800A1 (fr) * 1997-10-04 1999-04-07 Schäfer Hydroforming GmbH & Co. Méthode et dispositif pour la fabrication des arbres creux ayant des bosses radiales par le procédé de formage par pression interne
DE20116112U1 (de) 2001-10-01 2001-12-13 Thyssen Krupp Automotive Ag Nockenwelle mit Einbuchtungen
EP1184101A2 (fr) * 2000-08-29 2002-03-06 VAW Aluminium AG Procédé pour former des articles tubulaires creux métalliques
DE20204397U1 (de) * 2002-03-19 2002-07-04 Thyssen Krupp Automotive Ag Nockenwelle mit Einbuchtungen
JP2003103314A (ja) * 2001-07-24 2003-04-08 Showa Denko Kk 膨出部付き金属曲がり管の製造方法および装置
EP1430966A2 (fr) * 2002-12-21 2004-06-23 SIEMPELKAMP PRESSEN SYSTEME GmbH & CO. Procédé de fabrication d' une pièce métallique et presse de formage pour la mise en oeuvre du procédé de fabrication
WO2004082863A1 (fr) 2003-03-21 2004-09-30 Linamar Antriebstechnik Gmbh & Co. Kg Procede de production d'un arbre a cames assemble
JP2006082098A (ja) * 2004-09-15 2006-03-30 Honda Motor Co Ltd 金属製成形体の成形方法
DE102005007143A1 (de) * 2004-10-30 2006-05-11 Tower Automotive Hydroforming Gmbh & Co. Kg Hohlwelle mit darauf durch Innenhochdruckumformen befestigten Funktionselementen und Verfahren zu deren Herstellung
US20060123875A1 (en) * 2004-12-09 2006-06-15 Accurate Mould Ltd. Pre-crush die assembly and method
JP2006218494A (ja) * 2005-02-09 2006-08-24 Press Kogyo Co Ltd ハイドロフォーミング装置及び方法
CH695789A5 (de) 2001-03-03 2006-08-31 Krupp Presta Ag Nockenwelle mit Einbuchtungen.
EP1903232A2 (fr) * 2006-09-20 2008-03-26 Muhr und Bender KG Arbre à came monté doté de réglages passant sous les composants enfoncés

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303629A1 (de) * 1982-02-26 1983-09-15 Kokan Kako Co., Ltd., Yokohama, Kanagawa Verfahren zum herstellen einer nockenwelle mit mindestens einem exzentrischen nocken
JPH0275421A (ja) * 1988-09-09 1990-03-15 Masanobu Nakamura 突起付きパイプの製造方法
WO1994020234A1 (fr) * 1993-03-03 1994-09-15 Lotus Cars Limited Procede de formage d'elements tubulaires
EP0906800A1 (fr) * 1997-10-04 1999-04-07 Schäfer Hydroforming GmbH & Co. Méthode et dispositif pour la fabrication des arbres creux ayant des bosses radiales par le procédé de formage par pression interne
EP1184101A2 (fr) * 2000-08-29 2002-03-06 VAW Aluminium AG Procédé pour former des articles tubulaires creux métalliques
CH695789A5 (de) 2001-03-03 2006-08-31 Krupp Presta Ag Nockenwelle mit Einbuchtungen.
JP2003103314A (ja) * 2001-07-24 2003-04-08 Showa Denko Kk 膨出部付き金属曲がり管の製造方法および装置
DE20116112U1 (de) 2001-10-01 2001-12-13 Thyssen Krupp Automotive Ag Nockenwelle mit Einbuchtungen
DE20204397U1 (de) * 2002-03-19 2002-07-04 Thyssen Krupp Automotive Ag Nockenwelle mit Einbuchtungen
EP1430966A2 (fr) * 2002-12-21 2004-06-23 SIEMPELKAMP PRESSEN SYSTEME GmbH & CO. Procédé de fabrication d' une pièce métallique et presse de formage pour la mise en oeuvre du procédé de fabrication
WO2004082863A1 (fr) 2003-03-21 2004-09-30 Linamar Antriebstechnik Gmbh & Co. Kg Procede de production d'un arbre a cames assemble
JP2006082098A (ja) * 2004-09-15 2006-03-30 Honda Motor Co Ltd 金属製成形体の成形方法
DE102005007143A1 (de) * 2004-10-30 2006-05-11 Tower Automotive Hydroforming Gmbh & Co. Kg Hohlwelle mit darauf durch Innenhochdruckumformen befestigten Funktionselementen und Verfahren zu deren Herstellung
US20060123875A1 (en) * 2004-12-09 2006-06-15 Accurate Mould Ltd. Pre-crush die assembly and method
JP2006218494A (ja) * 2005-02-09 2006-08-24 Press Kogyo Co Ltd ハイドロフォーミング装置及び方法
EP1903232A2 (fr) * 2006-09-20 2008-03-26 Muhr und Bender KG Arbre à came monté doté de réglages passant sous les composants enfoncés

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Publication number Publication date
EP2640937A1 (fr) 2013-09-25
DE102010051997A1 (de) 2012-05-24

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