EP2640535A1 - Verfahren und komponentensatz zur herstellung eines rohrförmigen bauteils, insbesondere einer gebauten nockenwelle - Google Patents
Verfahren und komponentensatz zur herstellung eines rohrförmigen bauteils, insbesondere einer gebauten nockenwelleInfo
- Publication number
- EP2640535A1 EP2640535A1 EP11782645.3A EP11782645A EP2640535A1 EP 2640535 A1 EP2640535 A1 EP 2640535A1 EP 11782645 A EP11782645 A EP 11782645A EP 2640535 A1 EP2640535 A1 EP 2640535A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- support tube
- opening
- end piece
- tube
- 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
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
- B21D26/045—Closing or sealing means
-
- 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
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
-
- 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
- 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
- F01L1/053—Camshafts overhead type
-
- 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
- F01L2001/0471—Assembled camshafts
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
-
- 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
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53996—Means to assemble or disassemble by deforming
Definitions
- the invention relates to a method for producing a tubular component, in particular a built camshaft, by means of hydroforming, wherein a support tube and an end piece are fed, wherein in an opening of the end piece an associated end of the support tube used and subsequently by the application of a pressurized fluid expanded and connected to the end piece in a press fit, and wherein the opening before the pressurization with the fluid having a first portion having an inner cross section which is greater than the outer cross section of the associated end of the support tube.
- the invention also relates to a component set for producing a tubular component which has a carrier tube, an end piece with an opening for the carrier tube and functional elements, for example cams, provided on the carrier tube.
- camshaft Under a built camshaft is understood a camshaft, which is not manufactured in one piece in a Ur- or forming process, but assembled by the combination of several prefabricated parts. Modern built camshafts in addition to cams have additional functional elements, such as tail, sprocket, pulleys, encoder wheels, pump drives, bearings, plain bearings or the like, which must be mounted on a support tube with a suitable joining technology, with very high angular accuracies must be observed.
- additional functional elements such as tail, sprocket, pulleys, encoder wheels, pump drives, bearings, plain bearings or the like, which must be mounted on a support tube with a suitable joining technology, with very high angular accuracies must be observed.
- cams and optionally provided further functional elements are simultaneously mounted in a press fit on a support tube.
- the cams and optionally provided further functional elements are first pushed onto their hubs with a game on the support tube and positioned, in which case the support tube is subjected to a high internal pressure, whereby the support tube expanded with an elastic and a plastic portion and to the Inner surface of the hubs is created.
- the cams and optionally provided further functional elements are widened to a certain extent, but this expansion preferably takes place only elastically.
- both the support tube and the elements arranged thereon resiliently spring back, wherein the materials of the joining partners are selected so that the cams and other functional elements are held with an elastic residual stress in a press fit on the support tube.
- the hydroforming is usually carried out in a mold, which limits the radial expansion by the pressurization. If according to a preferred embodiment of the hydroforming process, the carrier tube is acted upon over its entire length with a pressurized fluid, a sufficient seal is to ensure. Furthermore, the reliable transmission of high torques should be made possible in the hydroforming with the least possible use of materials and with a lightweight design.
- a pressure source is usually connected to one end of the support tube while the end of the support tube opposite the pressure source is connected.
- a method for producing a built-up camshaft with the features described above is known from DE 36 16 901 A.
- the production of the tubular component in the form of a built camshaft takes place in a closed mold, wherein a source of the pressurized fluid is connected to one side of the support tube and on the other side an end piece is pressed onto the local end of the support tube during the hydroforming process.
- various measures are proposed.
- the arrangement of a sealing ring in a radial groove or at the bottom of the opening of the tail is expensive, which can not be excluded due to the very high acting pressures during hydroforming typically 2000 to 5000 bar leakage to the polymeric sealing material.
- the opening in the form of a blind bore at its bottom with a frusto-conical bevel against which the support tube is pressed.
- a linear contact is achieved around the circumference, which can not ensure a reliable seal with dimensional deviations, ovality and local damage.
- the production of such conical surfaces at the bottom of the opening is expensive.
- the invention has for its object to provide a method for producing a tubular component, in which by means of hydroforming an end piece can be attached in a simple manner with a high reliability and reproducibility. Furthermore, a set of components is to be specified, which is suitable for carrying out the manufacturing process.
- the object is achieved in that, starting from the front edge of the opening to the first portion, a second portion having a second inner cross section, which is smaller than the outer cross section of the associated end of the support tube, under training a circumferential edge connects in steps, wherein the support tube is first inserted with its corresponding end in the first section and wherein in a further insertion movement, the edge is cut into the material of the support tube.
- the usually approximately rectangular step defines a comparatively sharp cutting edge, which engages when inserting the associated end of the support tube in the region of the end face of the support tube and there cuts into the material. In this cutting both a material deformation and a certain Materialabscherung can be done.
- the end piece is prefixed after insertion of the support tube by the cutting of the edge to a certain extent, so that the support tube with the attached end piece can be handled easily before finally the joining takes place by means of internal high pressure.
- the comparatively sharp edge cuts along the edge End face of the support tube, wherein the introduction of force initially has a considerable axial portion, whereby reinforced material deformation or shearing and less bending of the support tube takes place.
- the height of the step is selected such that the second internal cross-section provided from the step is greater than the internal cross-section of the associated end of the tube. This difference in diameter results in the joining play for the pre-assembly.
- the dimensions are preferably also chosen so that despite the formation of the stage, the support tube to a bottom of the opening or at least to just before the bottom of the opening in the region of the second section under deformation and / or shearing of a portion of the tube material can be inserted.
- the entire length of the second section which is preferably between 1 mm and 8 mm, preferably about 4 mm, a sealing material contact is achieved, so that local unevenness, imperfections or the like even at a pressure of several 1000 bar not lead to a noticeable reduction of the seal.
- An extension of the second portion may be useful to compensate for uneven shortening of the tube as a result of forming operations.
- the fact that the support tube can preferably be inserted with its end up to the bottom of the opening also results in terms of dimensional stability of a particular
- the present invention generally relates to a method of manufacturing a tubular member, wherein the cross-sectional shape of the support tube is not initially determined.
- the cross-sectional shape of the support tube is not initially determined.
- square, rectangular, elliptical or other cross-sectional shapes are conceivable, wherein a peripheral edge is always provided at the transition of the first section to the second section within the opening of the end piece, wherein the inner contour of the opening is adapted to the outer contour of the support tube.
- a circular cross-section is usually provided, so that the sections of the opening are preferably circular-cylindrical or substantially circular-cylindrical.
- the details of the dimensions with respect to the inner and outer cross sections relate to a circular configuration according to the inner and outer diameter.
- the quality of the seal on the one hand and the force required for insertion of the support tube in the associated end piece on the other hand depend on the determination of the dimensions, the second inner cross section, the length of this section and the outer cross section of the tube.
- the first inner cross-section relative to the second inner cross-section in the radial direction has an oversize between 0.1 mm and 1 mm, particularly preferably between 0.2 mm and 0.4 mm, this measure of the height of corresponds to a substantially right-angled step between the first section and the second section.
- the first inner cross-section compared to the outer cross section of the associated end of the tube in the radial direction an excess of less than 0.2 mm, more preferably between 0.05 mm and 0, 1 mm.
- the strength of the connection and thus the torque to be transmitted depends on the overlap between the support tube and the tubular component.
- the opening has a longitudinally extending overall length which is at least 60%, preferably at least 80% of the inner diameter of the first section. Based on the finished component, the length along the longitudinal direction of the support tube is to be determined.
- the outer joining partner In order to achieve a high joint strength in hydroforming, it is crucial that the outer joining partner has a greater elastic recovery than the inner support tube. Accordingly, a sufficient expansion of the outer joint partner must be carried out beforehand, for which it may have a not too large wall thickness. So is
- the end piece in the region of the first portion of the opening has a wall thickness between 2 mm and 4 mm and so can be expanded elastically in the hydroforming to a sufficient extent.
- the opening of the end piece can be pretreated before insertion of the associated end of the support tube with a particle beam, such as a corundum, a shot blasting, a sandblast or the like. This increases the coefficient of friction between the joining parameters. In order to avoid damage to the invention as sharp as possible edge at the transition from the first portion to the second portion of the opening, this can be covered during the pretreatment by the particle beam.
- a particle beam such as a corundum, a shot blasting, a sandblast or the like.
- the contouring may, for example, have the form of a spiral, a pocket, an inner knurling, a butted inner contour or the like. Contours in which the formations run transversely to the direction of the torque transmission are particularly advantageous.
- the pipe material is molded into the corresponding contouring, which in addition to the frictional connection also forms a positive connection.
- the formation of a contouring requires a correspondingly high wall thickness of the tail, which counteracts to some extent elastic extensibility.
- the hydroforming takes place within the scope of the invention expediently within a mold.
- functional elements such as cams, sensor wheels, bearing rings or the like are threaded onto the carrier tube in the desired sequence, wherein the end piece is also attached at one end of the carrier tube as described above.
- the support tube and the functional elements threaded thereon are then inserted into a tool mold and thereby aligned with respect to their axial position and rotational angle alignment.
- a pressure source is arranged at the still open end of the support tube using an axial force which also ensures the sealing function, before the pressure source, for example a pressure stamp, applying pressure to a pressurized fluid to carry out the internal high-pressure forming process takes place.
- the support tube is
- the pressure source may, according to a preferred embodiment, be moved axially to keep the tube tight and to compensate for shortening of the tube due to the bulge.
- hydroforming can also be used to form functional surfaces such as bearing points from the support tube itself. This results in the advantage that due to the plastic deformation up to the tool shape, certain dimensional deviations of the carrier tube originally used are compensated. For the dimensional accuracy, in essence, only the provision of the support tube after elimination of the internal high pressure is decisive.
- bearing points on sections of the support tube they may, for example, also be subjected to finish machining and / or coating before hydroforming.
- the end piece in the region of the first portion of the opening may have at least one radial discharge channel, for example in the form of a bore and / or at least one groove extending in the longitudinal direction.
- the expanding support tube is damaged at the edge of the opening, there may be provided between the first portion and the edge of the opening, a radius and / or a conical widening. A cutting into the widening support tube can be avoided.
- the formation of a radius or a conical enlargement at the edge of the opening also contributes to the fact that the end piece can be even more easily mounted or preassembled on the associated end of the support tube.
- the invention also relates to a set of components for producing a tubular component by means of hydroforming, wherein the set of components comprises at least the carrier tube and end piece described above.
- FIG. 1 shows the longitudinal section of a built camshaft, which is formed by hydroforming of a support tube, functional elements and an end piece
- Fig. 2 is a detail view of the tail shown in FIG. 1 with the associated end of the support tube before the hydroforming.
- Fig. 1 shows the general structure of a formed by hydroforming camshaft having a support tube 1, at one end of the support tube 1, an end piece 2 and a plurality of functional elements in the form of cam 3 and a thrust bearing 4.
- the end piece 2 and the functional elements are fixed by hydroforming in a press fit on the support tube 1.
- outer contours of the carrier tube 1 are formed, which serve as bearing points 6.
- Screwdriver release 7 in the camshaft provide access to cylinder head bolts.
- a plurality of screwdriver release 7 are introduced into the support tube 1 over the length of the support tube 1.
- the functional elements are first pushed onto the carrier tube 1 and the end piece 2 is preassembled at one end of the carrier tube 1.
- the pressing of the end piece 2 on the associated end of the support tube 1 causes a fluid-tight connection, so that the discharge of pressurized fluid in the subsequent hydroforming can be avoided or at least largely avoided.
- a pressure source connected to the support tube 1, wherein the support tube 1 is located with the functional elements in a mold which holds the functional elements in the desired axial position and the angular orientation to each other and limits the expansion.
- an end element 8 can be used.
- FIG. 2 shows the two components before their connection and correspondingly before forming by means of internal high pressure.
- the end piece 2 has an opening 9, wherein said opening comprises a first circular cylindrical portion 10a with an inner diameter l a and a directly adjoining the second portion 10b with a smaller inside diameter l b.
- the transition between the first portion 10a and the second portion 10b is formed in a stepped manner, wherein the bend defines an edge 11 about 90 °.
- the outer diameter A of the carrier tube 1 lies between the first inner diameter l a and the second inner diameter l b , so that the carrier tube 1 can first be easily inserted into the first portion 10 a and then abuts with its end face 12 on the edge 1 1. In a further insertion movement, the edge 1 1 cuts into the material of the support tube 1 a. For this purpose, it is important that the material of the end piece 2 is correspondingly stronger or harder than that of the support tube 1.
- the height of the step between the first portion 10a and the second portion 10b is chosen so that the support tube 1 can be pushed under partial deformation and / or shearing of the material to the bottom 13 of the opening 9 under increased force.
- the entire length measured in the axial direction x b of the second section is thus a direct material contact and, accordingly, achieved a tight connection.
- the length x b of the second portion 10b is typically between 1 mm and 8 mm, preferably about 4 mm.
- the first inner diameter l a by 0.2 mm to 1 mm, preferably between 0.4 mm to 0.8 mm greater than the second inner diameter l b of the second portion 10b.
- the inner diameter l a of the first portion 10 a relative to the outer diameter A of the support tube 1 a Ü berm ate of m ög lst wen iger than 0, 2 mm, for example, an excess between 0.05 mm and 0, 1 mm.
- a discharge channel 14 is provided in the form of a bore in the embodiment.
- a groove extending in the longitudinal direction can also be introduced into the first section 10a for the removal of fluid.
- a conical widening 15 is provided there at the transition to the first section 10a.
- the end piece 2 is not only used for pressure-tight closure, but also has functional features.
- a central portion of the closed end piece 2 is provided with a thread 16 for a central screw.
- the total length x g of the entire opening 9 in the illustrated embodiment is at least 80% of the first inner diameter l a .
- An even further increase in the strength of the connection can be achieved, for example, by adhesive, galvanizing or at least partially contouring.
Landscapes
- 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010060686.3A DE102010060686B4 (de) | 2010-11-19 | 2010-11-19 | Verfahren und Komponentensatz zur Herstellung eines rohrförmigen Bauteils, insbesondere einer gebauten Nockenwelle |
PCT/EP2011/070397 WO2012066099A1 (de) | 2010-11-19 | 2011-11-17 | Verfahren und komponentensatz zur herstellung eines rohrförmigen bauteils, insbesondere einer gebauten nockenwelle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2640535A1 true EP2640535A1 (de) | 2013-09-25 |
EP2640535B1 EP2640535B1 (de) | 2015-03-18 |
Family
ID=44983560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11782645.3A Not-in-force EP2640535B1 (de) | 2010-11-19 | 2011-11-17 | Verfahren und komponentensatz zur herstellung eines rohrförmigen bauteils, insbesondere einer gebauten nockenwelle |
Country Status (5)
Country | Link |
---|---|
US (1) | US9284858B2 (de) |
EP (1) | EP2640535B1 (de) |
CN (1) | CN103442822B (de) |
DE (1) | DE102010060686B4 (de) |
WO (1) | WO2012066099A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010048225B4 (de) * | 2010-10-12 | 2021-03-18 | Neumayer Tekfor Engineering Gmbh | Fertigung einer Funktionswelle |
DE102012015991A1 (de) | 2012-08-11 | 2013-01-31 | Daimler Ag | Fügen einer Hartpartikel aufweisenden gebauten Nockenwelle |
CN104959789A (zh) * | 2015-06-29 | 2015-10-07 | 安庆市吉安汽车零件锻轧有限公司 | 一种组合式凸轮轴生产加工方法 |
DE102016111213B4 (de) * | 2016-06-20 | 2018-04-26 | Linamar Gmbh | Verfahren zur Herstellung einer gebauten Verbundwelle, sowie eine nach diesem Verfahren hergestellte gebaute Verbundwelle |
DE102019124575A1 (de) * | 2019-09-12 | 2020-08-13 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur Verstellung der Phasenlage einer Nockenwelle |
DE102020132822B4 (de) * | 2020-12-09 | 2023-03-23 | Benteler Steel/Tube Gmbh | Verfahren zur Herstellung eines inneren Anschlags in einem Rohrbauteil |
DE102022109290A1 (de) | 2022-04-14 | 2023-10-19 | Bayerische Motoren Werke Aktiengesellschaft | Verbrennungskraftmaschine für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, sowie Kraftfahrzeug |
DE102022207102A1 (de) | 2022-07-12 | 2024-01-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Verfahren und Vorrichtung zum Herstellen eines hybriden Bauteils |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3112564A (en) * | 1961-10-25 | 1963-12-03 | William J Murray | Method of forming a brazed lock joint |
JPS61266132A (ja) * | 1985-05-21 | 1986-11-25 | Musashi Seimitsu Ind Co Ltd | 組立カムシヤフトの製造方法 |
US5201247A (en) | 1988-01-14 | 1993-04-13 | Mannesmann Aktiengesellschaft | Assembled shaft and process for production thereof |
DE19606732C2 (de) * | 1995-02-27 | 2001-11-08 | Emitec Emissionstechnologie | Gefügte Mehrlagenwellen |
PL338130A1 (en) * | 1997-07-18 | 2000-09-25 | Cosma Int Inc | Method of and apparatus for hydrodynamically forming tubular workpieces of metal |
DE10134086C2 (de) * | 2001-07-13 | 2003-05-15 | Daimler Chrysler Ag | Verfahren und Vorrichtung zum Verbinden zweier Bauteile |
US6935292B2 (en) * | 2001-11-27 | 2005-08-30 | Thyssenkrupp Presta Ag | Camshaft with curvature |
DE10302957A1 (de) | 2003-01-24 | 2004-08-12 | Muhr Und Bender Kg | Gebaute Nockenwelle mit Eindellungen |
DE10324276B4 (de) | 2003-05-28 | 2005-10-13 | Daimlerchrysler Ag | Verfahren zur Herstellung eines mit einem endseitigen Abschlussdeckel versehenen Hohlprofils und eine Wagenheberkonsole |
DE10358493B4 (de) * | 2003-12-13 | 2006-01-05 | Daimlerchrysler Ag | Vorrichtung zum Innenhochdruckumformen |
JP2006122983A (ja) * | 2004-10-29 | 2006-05-18 | Nissan Motor Co Ltd | 液圧成形用予備成形体、液圧成形方法および液圧成形品 |
DE102007024092A1 (de) * | 2007-05-22 | 2008-11-27 | Mahle International Gmbh | Nockenwelle |
DE102008038276B4 (de) * | 2008-08-18 | 2018-02-15 | Benteler Automobiltechnik Gmbh | Verfahren zur Verbindung von Fahrwerksteilen und Fahrwerksbaugruppe |
DE102011050930A1 (de) * | 2011-06-08 | 2012-12-13 | Thyssenkrupp Presta Teccenter Ag | Nockenwelle und Verfahren zur Herstellung der Nockenwelle |
-
2010
- 2010-11-19 DE DE102010060686.3A patent/DE102010060686B4/de not_active Expired - Fee Related
-
2011
- 2011-11-17 US US13/880,262 patent/US9284858B2/en not_active Expired - Fee Related
- 2011-11-17 CN CN201180055370.XA patent/CN103442822B/zh not_active Expired - Fee Related
- 2011-11-17 WO PCT/EP2011/070397 patent/WO2012066099A1/de active Application Filing
- 2011-11-17 EP EP11782645.3A patent/EP2640535B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2012066099A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103442822A (zh) | 2013-12-11 |
US9284858B2 (en) | 2016-03-15 |
US20130305532A1 (en) | 2013-11-21 |
DE102010060686A1 (de) | 2012-05-24 |
CN103442822B (zh) | 2016-01-13 |
WO2012066099A1 (de) | 2012-05-24 |
DE102010060686B4 (de) | 2015-02-26 |
EP2640535B1 (de) | 2015-03-18 |
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