EP0917917A1 - Procédé et dispositif pour le formage à froid de pièces creuses - Google Patents

Procédé et dispositif pour le formage à froid de pièces creuses Download PDF

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Publication number
EP0917917A1
EP0917917A1 EP97120547A EP97120547A EP0917917A1 EP 0917917 A1 EP0917917 A1 EP 0917917A1 EP 97120547 A EP97120547 A EP 97120547A EP 97120547 A EP97120547 A EP 97120547A EP 0917917 A1 EP0917917 A1 EP 0917917A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
stroke
roller
axis
rollers
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
Application number
EP97120547A
Other languages
German (de)
English (en)
Other versions
EP0917917B1 (fr
Inventor
Daniel Dériaz
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.)
Ernst Grob AG
Original Assignee
Ernst Grob 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 Ernst Grob AG filed Critical Ernst Grob AG
Priority to DE59709448T priority Critical patent/DE59709448D1/de
Priority to ES97120547T priority patent/ES2193316T3/es
Priority to EP97120547A priority patent/EP0917917B1/fr
Priority to AT97120547T priority patent/ATE233620T1/de
Priority to JP10331096A priority patent/JPH11221644A/ja
Priority to US09/198,450 priority patent/US6089065A/en
Publication of EP0917917A1 publication Critical patent/EP0917917A1/fr
Application granted granted Critical
Publication of EP0917917B1 publication Critical patent/EP0917917B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/025—Internally geared wheels
    • 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
    • B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • 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
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/71—Vibrating

Definitions

  • the present invention relates to a method for Cold forming of hollow workpieces with circular Cross section according to the preamble of claim 1 and one Device according to the preamble of claim 7.
  • Spinning rollers act radially on spinning rollers Workpiece, which, for example, at the end of a a die provided spindle is arranged. Doing so the workpiece through the axially driven spindle Offset and the pressure rollers radially against the Pressed surface of the workpiece. By an axial Displacement of the spinning rollers relative to the spindle and radial feed of the spinning rollers becomes the desired one Shape of the workpiece reached, the inner shape is formed according to the matrix.
  • an internal toothing can be produced, so is for example from DE 4,218,092 a pressure rolling process known, in which the wall thickness of the workpiece is reduced simultaneously with the change in shape.
  • a spinning roller which is pressed onto the workpiece under high pressure and causes the reshaping.
  • a high static Pressure necessary, which in turn is very stiff and heavy machine frame due to the workpiece material the workpiece blank through the spinning rollers into the corresponding recesses in the die are rolled have to.
  • this manufacturing process also to strong vibrations, especially in the area of thin wall thicknesses, i.e. to the Places where the inner wall of the hollow part grooves having. On the one hand, this leads to large ones Signs of wear and on the other hand also to one non-homogeneous outer surface of the workpiece.
  • EP 0 688 is now used 617 known an impact rolling method in which the Impact rolling processes of the individual impact rollers transverse to Workpiece axis. Now you can Hollow parts which have a shoulder protruding outwards or Have flanges made by this process as the roller heads aligned in this way are now closer can be brought up to the workpiece shoulder. Nevertheless, due to the construction of the Rolling head in which the individual impact rollers are stored are a certain minimum distance between the last section of the Workpiece and its shoulder, which is not can be edited.
  • the object of the present invention was now to To find cold forming process with which such Hollow parts can be produced in a simple manner, and which avoid the disadvantages of the known methods or at least reduce.
  • Figures 1 and 2 are the longitudinal and Cross sections through a conventional impact rolling machine in the Machining area of the workpiece shown as it is known from EP 0 688 617.
  • a cylindrical workpiece 1 with internal teeth 2 from one also cylindrical hollow workpiece blank abrupt single rolling processes of in rolling heads 3, 4 rotatably mounted impact rollers 5 respectively. 6 shaped.
  • the in Figures 3 and 4 in schematic longitudinal or Cross sections shown inventive device is now able to remedy this disadvantage.
  • the workpiece 1 is in a conventional manner on a die 8 on resp. in front the feed mandrel 7 shaped.
  • the rollers 9, 10 are not more stored in a rotating driven roller head, but in the same way as conventional ones Spinning rolling machines themselves rotating around their axes driven. So that the rollers 9, respectively. 10th also directly up to a flange 1 'of the workpiece 1 be brought up, creating unprocessed shoulders be avoided.
  • any shoulders to be trained 1 '' can by the rollers 9 respectively. 10 completely by Flange 1 'to be processed.
  • the rollers 9, respectively. 10th but not according to the invention with a high static Pressure against the workpiece 1, but with an oscillating movement O resp. ⁇ H essentially perpendicular in the direction of the feed axis V of the workpiece 1 acted upon.
  • This is done with an adjustable stroke ⁇ H, preferably the rollers 9, 10 straight at the upper end of the stroke still in virtually pressure-free contact with the workpiece 1 and at the lower end of the stroke wall thickness in the material of the workpiece 1 immerse, resp. the radial required for this Reach infeed depth.
  • the stroke movement ⁇ H is preferably not exactly in Direction of the workpiece axis, but in one Angle ⁇ , preferably an acute angle between 0 ° and 5 °, as shown schematically in cross section in FIG.
  • roller rolls 9, 10, for example, as one Rolled roller 13 having a profiled surface can be, as shown schematically in Figure 8 in Longitudinal section is shown.
  • the roller 13 here for that Creating from outside to be attached to workpiece 1 Wells such as grooves. Grooves used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP97120547A 1997-11-24 1997-11-24 Procédé et dispositif pour le formage à froid de pièces creuses Expired - Lifetime EP0917917B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59709448T DE59709448D1 (de) 1997-11-24 1997-11-24 Verfahren und Vorrichtung zum Kaltumformen von Hohlteilen
ES97120547T ES2193316T3 (es) 1997-11-24 1997-11-24 Procedimiento y dispositivo para la formacion en frio de piezas huecas.
EP97120547A EP0917917B1 (fr) 1997-11-24 1997-11-24 Procédé et dispositif pour le formage à froid de pièces creuses
AT97120547T ATE233620T1 (de) 1997-11-24 1997-11-24 Verfahren und vorrichtung zum kaltumformen von hohlteilen
JP10331096A JPH11221644A (ja) 1997-11-24 1998-11-20 中空ワークを冷間塑性変形加工する方法並びに装置
US09/198,450 US6089065A (en) 1997-11-24 1998-11-24 Process and arrangement for the cold forming of hollow workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97120547A EP0917917B1 (fr) 1997-11-24 1997-11-24 Procédé et dispositif pour le formage à froid de pièces creuses

Publications (2)

Publication Number Publication Date
EP0917917A1 true EP0917917A1 (fr) 1999-05-26
EP0917917B1 EP0917917B1 (fr) 2003-03-05

Family

ID=8227668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120547A Expired - Lifetime EP0917917B1 (fr) 1997-11-24 1997-11-24 Procédé et dispositif pour le formage à froid de pièces creuses

Country Status (6)

Country Link
US (1) US6089065A (fr)
EP (1) EP0917917B1 (fr)
JP (1) JPH11221644A (fr)
AT (1) ATE233620T1 (fr)
DE (1) DE59709448D1 (fr)
ES (1) ES2193316T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2286227C2 (ru) * 2005-01-18 2006-10-27 Борис Зельманович БОГУСЛАВСКИЙ Способ изготовления лезвия режущего инструмента, устройство для его осуществления и боек, используемый в этом устройстве
US20070044530A1 (en) * 2005-08-24 2007-03-01 Ball Corporation Apparatus and Method for Flanging a Neck of a Container
EP2125266B1 (fr) 2007-03-19 2021-06-02 Magna Powertrain Inc. Procédé de fabrication d'un disque denté
US9890808B2 (en) 2015-04-22 2018-02-13 American Axle & Manufacturing, Inc. Telescoping propshaft
US10144106B2 (en) * 2015-11-02 2018-12-04 Lake Country Manufacturing, Inc. Adjustable stroke mechanism for random orbital machine
US10518384B2 (en) 2015-11-02 2019-12-31 Lake Country Tool, Llc Adjustable stroke mechanism for random orbital machine
US11493115B2 (en) 2017-10-30 2022-11-08 Lake Country Tool, Llc Adjustable stroke device with cam
US11592055B2 (en) 2018-08-30 2023-02-28 Lake Country Tool, Llc Adjustable stroke device with cam
US12078227B2 (en) 2021-01-20 2024-09-03 Lake Country Tool, Llc Adjustable stroke device with cam
US11878391B2 (en) 2022-03-04 2024-01-23 Lake Country Tool, Llc Adjustable stroke device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658006A5 (de) * 1983-03-07 1986-10-15 Grob Ernst Fa Verfahren und vorrichtung zum kalibrierenden reduzieren der querschnittsflaeche eines dabei rotierenden werkstueckes.
JPH026029A (ja) * 1988-06-24 1990-01-10 Sumitomo Metal Ind Ltd 中空スクリュの製造方法
EP0688617A1 (fr) * 1994-06-25 1995-12-27 Ernst Grob Ag Procédé et dispositif pour laminer des pièces creuses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455139A (en) * 1965-02-05 1969-07-15 Edward J Flowers Machines for forming and/or finishing metal workpieces and gears
US3911710A (en) * 1974-05-30 1975-10-14 Republic Steel Corp Method and apparatus for smoothing the internal bead in tubing
US5765419A (en) * 1994-06-25 1998-06-16 Ernst Grob Ag Method and apparatus for a rolling of hollow articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658006A5 (de) * 1983-03-07 1986-10-15 Grob Ernst Fa Verfahren und vorrichtung zum kalibrierenden reduzieren der querschnittsflaeche eines dabei rotierenden werkstueckes.
JPH026029A (ja) * 1988-06-24 1990-01-10 Sumitomo Metal Ind Ltd 中空スクリュの製造方法
EP0688617A1 (fr) * 1994-06-25 1995-12-27 Ernst Grob Ag Procédé et dispositif pour laminer des pièces creuses

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 135 (M - 0949) 14 March 1990 (1990-03-14) *

Also Published As

Publication number Publication date
DE59709448D1 (de) 2003-04-10
ES2193316T3 (es) 2003-11-01
EP0917917B1 (fr) 2003-03-05
JPH11221644A (ja) 1999-08-17
ATE233620T1 (de) 2003-03-15
US6089065A (en) 2000-07-18

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