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EP2591866A1 - Verfahren zur Herstellung eines rotationssymmetrischen hohlen Teils und danach hergestelltes hohles Teil - Google Patents

Verfahren zur Herstellung eines rotationssymmetrischen hohlen Teils und danach hergestelltes hohles Teil Download PDF

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Publication number
EP2591866A1
EP2591866A1 EP12401215.4A EP12401215A EP2591866A1 EP 2591866 A1 EP2591866 A1 EP 2591866A1 EP 12401215 A EP12401215 A EP 12401215A EP 2591866 A1 EP2591866 A1 EP 2591866A1
Authority
EP
European Patent Office
Prior art keywords
shaft
hollow part
solid material
rotationally symmetrical
cross
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Withdrawn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
EP12401215.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Peter Kolbe
Ernst-Peter Schmitz
Thomas Körner
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.)
Gesenkschmiede Schneider GmbH
Original Assignee
Gesenkschmiede Schneider GmbH
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 Gesenkschmiede Schneider GmbH filed Critical Gesenkschmiede Schneider GmbH
Publication of EP2591866A1 publication Critical patent/EP2591866A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21K1/063—Making machine elements axles or shafts hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut

Definitions

  • the invention relates to a method for producing a rotationally symmetrical hollow part, in particular shaft and a cross-wedge-rolled rotationally symmetrical hollow part.
  • the hollow parts thus produced in particular shafts, still had the disadvantage that the inner bore had steps or helical threads, which came about through the use of the spinning mandrel.
  • the reworking of the inner contour of the hollow waves is complex and also leads to weakening of the fiber flow of the shaft. A weakening of a wave It also means that more material is needed for the same strength - meaning a higher weight of the shaft. This is undesirable in view of the lightweight construction requirements.
  • a non-circular inner contour also leads to significant problems when centering the shaft, elaborate reworking and prevents unproblematic running around.
  • the object is achieved according to the invention by using rotating mandrels which can be driven accordingly and thus a relative movement between mandrel and solid material to be thorn is controlled so that the inner contour is substantially smooth and the wall thicknesses over the cross sections are substantially constant.
  • a round running hollow part can be made which requires little or no balancing work.
  • shaft which may be a gear shaft, camshaft, drive shaft, output shaft, starter shaft, hollow shaft, camshaft or a preform for further formed parts.
  • the at least one mandrel can have any desired shape, such as a tooth form, a hexagon, a swirl profile, etc. It is also advantageous, if it is rounded in the front region, to achieve a smoother inner contour of the hollow part.
  • a rotary drive for the mandrel, which is preferably controllable, is familiar to the person skilled in the art.
  • the method is thus feasible for high volumes in a simple manner, which is achieved due to the molding process practically final shape and the workpieces thus produced in wstl. do not need to be reworked and require little or no balancing work.
  • Both the workpiece itself can be achieved by saving material as well as in the production costs a significant savings - even by simplifying the complex balancing - which previously required elaborate post-processing steps necessary.
  • the hollow shaft reduces the weight of the conventional solid shaft but maintains its strength.
  • a driven and controlled rotating mandrel By inserting a driven and controlled rotating mandrel, the material in the core is selectively displaced outward, with a high workpiece accuracy is obtained because the material is pressed against external molds.
  • the mandrels can be inserted simultaneously rotating by means of a rotary drive. But it is also possible that the mandrels are pushed in a time-shifted rotating.
  • a typical inventive shaft which is used as a transmission main shaft, countershaft, has a diameter of about 30 to 200 mm, preferably from 60 to 150 mm - of course, diameter can be realized, which are above or below.
  • the shaft advantageously consists of a ductile wrought alloy, such as a 16MnCrS4, 20MnCr5, 20MoCrS4 steel, an aluminum or magnesium alloy, precipitation hardened steels or all common steels, as known to those skilled in the art.
  • Fig. 1 shows a bar 1 of solid material which is heated to forging temperature.
  • Fig. 2 is shown schematically how it is transformed into a cross-corrugated shaft with different diameters.
  • the rod 1 is moved with high forces via tools 12, 14, so that the material solidifies in the outer region 4 and the core 3 becomes brittle and ruptures.
  • the tool 12, 14 forms the exterior of the shaft 2 already close to the final shape.
  • Fig. 3 shows how from two end faces of the shaft 2, two driven rotating mandrels 5, 6 are inserted centrally into the shaft 2 along the weakened by the Mannesmann effect core 3 in the axial direction.
  • the spines 5, 6 are advanced until shortly before the meeting.
  • the shaft material is pressed to the outside against the moving tools 12, 14 and receives a precise outer contour.
  • Fig. 4 shows a cross section through the cross-rolled shaft 2 in the first form. On both end faces a blind hole 8, 8 has been generated by the mandrels.
  • Fig. 2 shows a cross section through a cross-rolled shaft 2
  • a through Overlay the insertion of the mandrels has 5, 6 produced final shape.
  • a mandrel 5, 6 is withdrawn from an overlapping area of the mandrel paths, while the corresponding other mandrel is rotated and inserted over the overlapping area, so that a smooth through-hole 9 is created.
  • the through hole is smooth, in a further step, the through-hole generating mandrel 5 can be withdrawn again and the first retracted mandrel is moved over the overlap region.
  • a cross wedge-rolled hollow shaft is created and larger diameters are conceivable, depending on the size of the machine.
  • Typical mass of the shaft are a diameter of 30 to 200 mm, preferably 60-150 mm.
  • Ductile materials such as forgeable wrought alloys, can be used as materials.
  • the alloys are by no means limited to iron alloys - it is also possible to use corresponding non-ferrous alloys or alloys with a lower iron content, such as ductile aluminum, titanium or magnesium alloys.
  • FIG. 6 a cross wedge rolling machine 10 is shown schematically for understanding the method.
  • a rod 1 is held by opposite material supports 16, 18 like a cage together with two opposing outer tools 12, 14.
  • the outer tools 12, 14 are arranged perpendicular to the material supports 16, 18.
  • a tool 12 with the tool carrier 13 is arranged substantially stationary, while the second tool 14 moves with the tool carrier 15 and the material supports 16, 18 with the rolling rod material 1 up and down or in two linear directions back and forth.
  • the workpiece is acted upon from both sides by the tools 12, 14 with very high forces, so that a cross-wedge-rolled shaft 2 is produced from the rod part 1.
  • Fig. 7 schematically shows a side view of this cross wedge rolling machine 10, wherein a wedge-shaped tool 12 exerts forces on the shaft 2 and the shaft 2 is formed by a material support 16 and the tool 14.
  • Fig. 8 a Querkeilwalz Colour, wherein the mandrels are rotatably introduced into the solid material and support the inner contour, while the outer Kontor of the tube is formed into a flange 20.
  • the rotating mandrels which have a round tip here, support the material during the flow into the flange 20 - the arrows represent the force of the mold on the material to be formed. It can be seen that the mandrels release the material during local pressure application by the mold supported to reduce unwanted flow of material into the bore.
  • the excess material 22 achieved by forming is smoothed by pulling out the mandrels in the further process, thus obtaining a smooth inner bore.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP12401215.4A 2011-11-13 2012-10-30 Verfahren zur Herstellung eines rotationssymmetrischen hohlen Teils und danach hergestelltes hohles Teil Withdrawn EP2591866A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011118186 2011-11-13

Publications (1)

Publication Number Publication Date
EP2591866A1 true EP2591866A1 (de) 2013-05-15

Family

ID=47227740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12401215.4A Withdrawn EP2591866A1 (de) 2011-11-13 2012-10-30 Verfahren zur Herstellung eines rotationssymmetrischen hohlen Teils und danach hergestelltes hohles Teil

Country Status (4)

Country Link
US (1) US20130136943A1 (es)
EP (1) EP2591866A1 (es)
DE (1) DE102012104413A1 (es)
MX (1) MX2012013120A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104722578A (zh) * 2015-04-14 2015-06-24 宣城市泰维特精工科技有限公司 杆件锻造坯料的轧制装置及该杆件的成型方法
CN105562429A (zh) * 2016-01-29 2016-05-11 北京科技大学 解决小断面收缩率轧件心部缺陷的方法及其楔横轧模具
CN107282851A (zh) * 2017-07-13 2017-10-24 安徽众鑫科技股份有限公司 一种变速箱j7输出轴的制备方法
CN108637595A (zh) * 2018-04-03 2018-10-12 宁夏西北骏马电机制造股份有限公司 采煤机空心轴加工方法及用于磨削空心轴的磨削顶尖
DE102017222296A1 (de) * 2017-12-08 2019-06-13 Zf Friedrichshafen Ag Verfahren zur Herstellung einer Welle sowie Welle
WO2021234188A1 (es) * 2020-05-21 2021-11-25 Lekunberri De Corte, S.L. Método y sistema de forja para un eje principal de aerogenerador

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270355B (zh) * 2016-08-24 2018-11-09 江苏金源高端装备股份有限公司 一种传动轴锻造工艺
DE102017103042A1 (de) 2017-02-15 2018-08-16 Federal-Mogul Valvetrain Gmbh Verfahren zum Querkeilwalzen von Tellerventilen
CN107866512A (zh) * 2017-04-28 2018-04-03 中国科学院金属研究所 基于楔横轧的难变形材料制坯方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE809303C (de) * 1948-11-14 1951-07-26 Henschel & Sohn G M B H Warmformwalzen von Stehbolzen oder aehnlichen Teilen
DE3144695A1 (de) * 1981-11-06 1983-05-19 Mitsubishi Jukogyo K.K., Tokyo Verfahren zum walzen von hohlen gebilden
JPS61126937A (ja) * 1984-11-22 1986-06-14 Mitsubishi Heavy Ind Ltd 段付き軸状製品の製造方法
DE19905038A1 (de) * 1999-02-08 2000-08-17 Fraunhofer Ges Forschung Dorneinrichtung, Querwalzvorrichtung und Verfahren zur Herstellung quergewalzter, zumindest partiell hohler Körper
DE102006031564A1 (de) 2006-07-07 2008-01-10 Gesenkschmiede Schneider Gmbh Verfahren zur Herstellung eines rotationssymmetrischen Teils, insbesondere Welle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155437A (en) * 1937-10-12 1939-04-25 Aluminum Co Of America Tube drawing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE809303C (de) * 1948-11-14 1951-07-26 Henschel & Sohn G M B H Warmformwalzen von Stehbolzen oder aehnlichen Teilen
DE3144695A1 (de) * 1981-11-06 1983-05-19 Mitsubishi Jukogyo K.K., Tokyo Verfahren zum walzen von hohlen gebilden
JPS61126937A (ja) * 1984-11-22 1986-06-14 Mitsubishi Heavy Ind Ltd 段付き軸状製品の製造方法
DE19905038A1 (de) * 1999-02-08 2000-08-17 Fraunhofer Ges Forschung Dorneinrichtung, Querwalzvorrichtung und Verfahren zur Herstellung quergewalzter, zumindest partiell hohler Körper
DE102006031564A1 (de) 2006-07-07 2008-01-10 Gesenkschmiede Schneider Gmbh Verfahren zur Herstellung eines rotationssymmetrischen Teils, insbesondere Welle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104722578A (zh) * 2015-04-14 2015-06-24 宣城市泰维特精工科技有限公司 杆件锻造坯料的轧制装置及该杆件的成型方法
CN105562429A (zh) * 2016-01-29 2016-05-11 北京科技大学 解决小断面收缩率轧件心部缺陷的方法及其楔横轧模具
CN105562429B (zh) * 2016-01-29 2017-11-17 北京科技大学 解决小断面收缩率轧件心部缺陷的方法及其楔横轧模具
CN107282851A (zh) * 2017-07-13 2017-10-24 安徽众鑫科技股份有限公司 一种变速箱j7输出轴的制备方法
DE102017222296A1 (de) * 2017-12-08 2019-06-13 Zf Friedrichshafen Ag Verfahren zur Herstellung einer Welle sowie Welle
CN108637595A (zh) * 2018-04-03 2018-10-12 宁夏西北骏马电机制造股份有限公司 采煤机空心轴加工方法及用于磨削空心轴的磨削顶尖
WO2021234188A1 (es) * 2020-05-21 2021-11-25 Lekunberri De Corte, S.L. Método y sistema de forja para un eje principal de aerogenerador

Also Published As

Publication number Publication date
DE102012104413A1 (de) 2013-05-16
MX2012013120A (es) 2013-05-13
US20130136943A1 (en) 2013-05-30

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