US20090211323A1 - Method of Forming a Circular Sheet-Metal Blank - Google Patents

Method of Forming a Circular Sheet-Metal Blank Download PDF

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Publication number
US20090211323A1
US20090211323A1 US11/988,814 US98881406A US2009211323A1 US 20090211323 A1 US20090211323 A1 US 20090211323A1 US 98881406 A US98881406 A US 98881406A US 2009211323 A1 US2009211323 A1 US 2009211323A1
Authority
US
United States
Prior art keywords
metal blank
sheet
diameter
circular sheet
circular
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.)
Abandoned
Application number
US11/988,814
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English (en)
Inventor
Udo Friese
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.)
WF Maschinenbau und Blechformtecknik GmbH and Co KG
Original Assignee
WF Maschinenbau und Blechformtecknik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37192363&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20090211323(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WF Maschinenbau und Blechformtecknik GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Assigned to WF-MASCHINENBAU UND BLECHFORMTECHNIK GMBH & CO. reassignment WF-MASCHINENBAU UND BLECHFORMTECHNIK GMBH & CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRIESE, UDO
Publication of US20090211323A1 publication Critical patent/US20090211323A1/en
Abandoned 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
    • B21K1/28—Making machine elements wheels; discs
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • 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
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
    • 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
    • Y10T29/49481—Wheel making

Definitions

  • the present disclosure relates to a method of forming a circular sheet-metal blank which has a central hole and rests on a tool rotating about an axis.
  • the sheet-metal blank has a thickness and has a diameter which is smaller than a diameter of the tool.
  • the present disclosure relates to a method of forming circular sheet-metal blanks by flow-forming rollers.
  • the present disclosure relates to a method of forming a circular sheet-metal blank which rests on a tool rotating about an axis.
  • the sheet-metal blank has a thickness and has a diameter which is smaller than a diameter of the tool.
  • one or more flow-forming rollers are plunged axially into the material of the circular sheet-metal blank and are moved radially outward. That is, the path of the flow-forming rollers includes at least one component motion in the radial direction. As a result, the area of the circular sheet-metal blank is enlarged radially in all directions. Consequently, a rotationally symmetrical part, in particular a circular sheet-metal blank having a larger diameter d 2 and a thickness a 2 reduced at least in sections or throughout, is produced from the circular sheet-metal blank having an initial diameter d 1 and a thickness a 1 .
  • a circular sheet-metal blank or directly a rotationally symmetrical part such as a gear part, having a larger diameter d 2 and a thickness a 2 reduced at least in sections or throughout, from a circular sheet-metal blank having an initial diameter d 1 and a thickness a 1 . It is even possible to increase the diameter by more than 10%, in particular by more than 20%.
  • circular sheet-metal blank must not be considered too narrowly with regard to the part produced by the forming. Firstly, it is possible to produce a flat circular sheet-metal blank. However, said blank may also be contoured if the tool is correspondingly contoured. In addition, the circular sheet-metal blank may be machined or further processed to directly produce a gear part or the like.
  • the method can be used in a wide variety of sectors.
  • a preferred embodiment is the enlargement of “small” circular sheet-metal blanks as occur, for example, more or less as waste in the manufacture of wheel disks for trucks, which waste otherwise ought to be scrapped.
  • FIG. 1 shows a circular metal blank as an initial workpiece, according to the present disclosure.
  • FIG. 2 shows the circular metal blank of FIG. 1 on a tool, represented by dashed-lines and after forming, represented by solid lines.
  • FIG. 1 shows a circular sheet-metal blank 1 having a central hole 2 .
  • the circular sheet-metal blank 1 rests on a tool 4 which rests on a spindle (not shown) of a flow-forming machine and rotatable about an axis 3 .
  • the sheet-metal blank 1 has a thickness a 1 and a diameter d 1 .
  • the circular sheet-metal blank 1 is held at the central hole 2 .
  • at least one pin 5 engages in the central hole 2 , which may be in a clamping manner.
  • a counterholder device 6 which has a larger diameter than the central hole 2 , can adjoin pin 5 on a side of the circular sheet-metal blank 1 which faces away from the tool 4 .
  • An axial length of the pin 5 may be smaller than, just as large as or larger than the thickness d 1 of the circular sheet-metal blank 1 .
  • the circular sheet-metal blank 1 may be made of a cast iron or another metal which can be formed by flow forming.
  • the tool 4 extends radially in all directions beyond an outer circumference of the circular sheet-metal blank 1 which may have a circular form.
  • the sheet-metal blank 1 preferably has a flat surface, but may also be of contoured design.
  • One or more freely rotatable flow-forming rollers 7 are arranged above the circular sheet-metal blank 1 .
  • the rollers 7 can also be fed-in in superimposed movements at least axially in a direction x toward the sheet-metal blank 1 , or workpiece, and radially in a direction r.
  • the flow-forming roller 7 is fed-in axially in the direction x at a distance from an outer circumference, preferably close to the central hole 2 or even at the edge of the central hole 2 .
  • the roller 7 plunges into the sheet-metal blank 1 , or workpiece.
  • the roller 7 is moved outward radially in the direction r, such that the roller 7 presses or pushes the material of the circular sheet-metal blank 1 radially outward ahead of it. In this way, the area of the circular blank 1 is enlarged radially in all directions, and surprisingly without crack formation in the outer circumferential region.
  • a freely rotatable hold-down roller 8 in the outer circumferential region can additionally prevent the material of the sheet-metal blank 1 from arching forwards from a plane of the circular sheet-metal blank 1 .
  • the method includes producing waste parts or waste circular blanks used in wheel tire production.
  • the method further includes producing gear parts and flywheel ring gears having larger diameters than the diameter of the initial circular blank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
US11/988,814 2005-07-25 2006-06-24 Method of Forming a Circular Sheet-Metal Blank Abandoned US20090211323A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102005035229 2005-07-25
DE102005035229.4 2005-07-25
DE102005035519.6 2005-07-26
DE102005035519A DE102005035519A1 (de) 2005-07-25 2005-07-26 Verfahren zum Umformen einer Blechronde
PCT/EP2006/006105 WO2007012367A1 (de) 2005-07-25 2006-06-24 Verfahren zum umformen einer blechronde

Publications (1)

Publication Number Publication Date
US20090211323A1 true US20090211323A1 (en) 2009-08-27

Family

ID=37192363

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/988,814 Abandoned US20090211323A1 (en) 2005-07-25 2006-06-24 Method of Forming a Circular Sheet-Metal Blank

Country Status (9)

Country Link
US (1) US20090211323A1 (es)
EP (1) EP1909985B1 (es)
JP (1) JP2009502508A (es)
KR (1) KR20080026192A (es)
CA (1) CA2614931A1 (es)
DE (1) DE102005035519A1 (es)
ES (1) ES2484800T3 (es)
PL (1) PL1909985T3 (es)
WO (1) WO2007012367A1 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090126443A1 (en) * 2004-08-06 2009-05-21 Fontijne Grotnes B.V. Method and apparatus for manufacturing a rim bed by means of cold forming
CN114042843A (zh) * 2021-11-09 2022-02-15 常州和仕达机械装备制造有限公司 异形环件的水平辗轧工艺及成型装置
CN114042844A (zh) * 2021-11-09 2022-02-15 常州和仕达机械装备制造有限公司 异形环件的水平辗轧成型装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966555A (zh) * 2009-07-28 2011-02-09 上海兴浦旋压车轮有限公司 一种车轮辗压成型方法
CN104759851A (zh) * 2015-04-07 2015-07-08 常州龙之合飞轮总成系统有限公司 一种发动机飞轮成型新工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD236824A1 (de) * 1985-04-30 1986-06-18 Karl Marx Stadt Haushaltgeraet Metalldrueckverfahren zur herstellung von schlagzeugbecken
DD283088A5 (de) * 1989-05-16 1990-10-03 Karl Marx Stadt Haushaltgeraet Verfahren zum herstellen von rundmesserschneiden
DE19524089C1 (de) * 1995-07-01 1996-09-05 Wf Maschinenbau Blechformtech Verfahren und Vorrichtung zur Herstellung eines Getriebeteiles aus einer Metallronde
DE10033239A1 (de) * 2000-07-10 2002-01-24 Wf Maschinenbau Blechformtech Verfahren zur Herstellung einer Verstellscheibe eines stufenlosen Getriebes
DE10108498C1 (de) * 2001-02-22 2002-08-22 Wf Maschinenbau Blechformtech Vorrichtung zur spanlosen Herstellung eines eine konzentrische Nabe aufweisenden Formkörpers
DE10160038C1 (de) * 2001-12-06 2003-03-13 Winkelmann & Pannhoff Gmbh & C Verfahren zur Herstellung eines rotationssymmetrischen Bauteils
EP1697066B1 (de) * 2003-11-17 2008-01-02 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Verfahren zur herstellung eines flansches an einer blechronde

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090126443A1 (en) * 2004-08-06 2009-05-21 Fontijne Grotnes B.V. Method and apparatus for manufacturing a rim bed by means of cold forming
CN114042843A (zh) * 2021-11-09 2022-02-15 常州和仕达机械装备制造有限公司 异形环件的水平辗轧工艺及成型装置
CN114042844A (zh) * 2021-11-09 2022-02-15 常州和仕达机械装备制造有限公司 异形环件的水平辗轧成型装置

Also Published As

Publication number Publication date
DE102005035519A1 (de) 2007-02-01
EP1909985A1 (de) 2008-04-16
JP2009502508A (ja) 2009-01-29
WO2007012367A1 (de) 2007-02-01
KR20080026192A (ko) 2008-03-24
CA2614931A1 (en) 2007-02-01
EP1909985B1 (de) 2014-04-30
ES2484800T3 (es) 2014-08-12
PL1909985T3 (pl) 2014-12-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WF-MASCHINENBAU UND BLECHFORMTECHNIK GMBH & CO., G

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FRIESE, UDO;REEL/FRAME:020907/0205

Effective date: 20080206

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION