EP0362502A2 - Procédé de calibrage en réduction de la section transversale d'une pièce en rotation - Google Patents

Procédé de calibrage en réduction de la section transversale d'une pièce en rotation Download PDF

Info

Publication number
EP0362502A2
EP0362502A2 EP89113522A EP89113522A EP0362502A2 EP 0362502 A2 EP0362502 A2 EP 0362502A2 EP 89113522 A EP89113522 A EP 89113522A EP 89113522 A EP89113522 A EP 89113522A EP 0362502 A2 EP0362502 A2 EP 0362502A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
feed
axis
axial
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.)
Withdrawn
Application number
EP89113522A
Other languages
German (de)
English (en)
Other versions
EP0362502A3 (fr
Inventor
Werner Schuler
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
Publication of EP0362502A2 publication Critical patent/EP0362502A2/fr
Publication of EP0362502A3 publication Critical patent/EP0362502A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • B21H1/20—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling rolled longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • 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
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • 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

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • torsion bars which are used for a variety of technical purposes, e.g. can be used as spring bars, drive shafts and the like, in addition to thicker parts, thinner parts are required, whereby for well-known reasons no steps, but gradual transitions in the change in diameter may be required.
  • Such torsion bars are usually machined by turning so that they do not have any imbalances or irregularities that otherwise have an adverse effect on their properties, which occur during their previous manufacture, e.g. in forging.
  • turning such slim, long parts is problematic, the tool life and the working speed for the required hard materials being modest. Material cutting inevitably leads to material losses; relatively large workpiece diameters are required. Relatively large hardening delays are also problematic.
  • the object of the invention is to avoid these disadvantages and to show a way in which the known cold-forming method mentioned at the outset can also be made economically applicable where it has hitherto failed.
  • the resulting wavy outer surface usually does not have a disruptive effect.
  • the method according to the invention of the type just mentioned can give good training if the hollow workpiece, based on its processing with two rollers, each of which rotates in one of two roller heads, with an axial workpiece feed of at least 5 mm per Advances workpiece rotation.
  • this deficiency can now be countered unexpectedly simply by rolling the workpiece after it has been processed in the course of the above-mentioned axial feed during an axial return of the workpiece opposite to the axial feed of the workpiece, the Rolling heads are at most slightly more advanced towards the workpiece axis or are left the same, and the axial return of the workpiece is kept similar in size but at most the same size as the directionally reversed previous axial advance of the workpiece.
  • the "correction" of the twisting that can be achieved when rolling with axial return is generally greater the greater the axial return.
  • the device shown in FIGS. 1 and 2 has a machine frame 1, in which the clamping device 3 axially displaceable along the workpiece axis A by a screw spindle 2 is rotatably mounted.
  • the clamping device 3 When feeding, the clamping device 3 is advanced in the direction of arrow II. With the clamping device 3, the torsion bar T clamped in it as a workpiece is also displaced.
  • a geared motor is provided, which can also be controlled in terms of its speed by means of a control known per se.
  • the clamping device 3 (and with it the clamped torsion bar T) is rotated in the direction of arrow 7.
  • two roll heads 4 are rotatably mounted around roll head axes WA which are distant from the axis A and oriented transversely to the axis A (only two roll heads 4 are shown for the sake of clarity, but there could also be more).
  • roll head axes WA which are distant from the axis A and oriented transversely to the axis A (only two roll heads 4 are shown for the sake of clarity, but there could also be more).
  • one roller 5 is freely rotatably mounted, so that it executes a planetary movement when the roller head rotates (instead of just one roller 5, more rollers could be mounted in each roller head 4, but this would disturb the clarity of the drawing) .
  • Each roller head 4 is rotatably connected to an articulated shaft 40.
  • the propeller shaft 40 can be driven by an associated electric motor 41 via a belt drive 42.
  • the gear wheels 43 are provided so that the two roller heads 4 are driven synchronously in opposite directions.
  • roller profiles can be flat or concave, symmetrical or asymmetrical. You can generate torque on the workpiece if desired.
  • the torsion bar T is produced according to the inventive method on the device shown in FIGS. 1 and 2 in this example as follows, reference being made to FIG. 3 with regard to the torsion bar T and to FIG. 4 with regard to the manufacturing criteria:
  • the torsion bar T is clamped at one end T1 in the clamping device 3; this end T1 has the original outside diameter TD.
  • the torsion bar T is started to rotate with the clamping device 3 in the direction of the arrow 7, while the rotatingly driven roller heads 4 (which had previously been removed from the torsion bar T) are slowly advanced to the torsion bar T until the rollers 5 rotate as far as the workpiece axis A approach that the slim part T2 of the torsion bar T is rolled.
  • the diameter TD is reduced to the diameter Td.
  • the torsion bar T is usually moved more slowly than later in the direction of arrow II, or you even move it back and forth a little.
  • the local processing density should not be so great that the dreaded disadvantages can occur.
  • the axial feed of the torsion bar T is brought fully into the area according to the invention in the direction of arrow II and rolled until the required length has been rolled, with a second thick end area being retained here.
  • the roller heads 4 are in the starting position away from the workpiece axis A. brought back, and the finished torsion bar T is unclamped.
  • the clamping device is returned to the starting position, and another torsion bar can be clamped and processed.
  • the material of the torsion bar was 42 Cr Mo 4 steel with a tensile strength of 800 N per square millimeter.
  • - TA was 46.5 mm.
  • - TJ was 33.8 mm.
  • - TD was thus 6.35 mm.
  • the roll heads each contained two rolls and were driven at 1130 revolutions per minute.
  • the workpiece speed was 106 revolutions per minute.
  • the axial feed of the workpiece was 760 mm per minute, resulting in a workpiece feed of approx. 6.66 mm per workpiece revolution.
  • a hollow torsion bar that is not particularly profiled on the inside can also be produced, although it is sometimes possible to use even higher feed values there.
  • a clamping device 3 axially displaceable along the workpiece axis A by a screw spindle 2 is also provided in FIG. 4, in which the hollow rod H is shown clamped coaxially to its workpiece axis A.
  • the screw spindle can be driven by a controllable motor drive 2 'in a suitable manner to achieve the desired axial workpiece feed (here in the direction of arrow II) in the first rolling process and the opposite axial workpiece return in the second rolling process to arrow II.
  • the clamping device 3 can also (together with the mandrel D tensioned hollow rod H) are rotated by a gear motor 3 '. As a result, the hollow rod H is rotated about its workpiece axis A in the direction of arrow 7.
  • roller heads 4 On the machine frame 1 there are also two roller heads 4, opposite one another with respect to the workpiece axis A, rotatable about axes (not designated) lying transversely to the workpiece axis W.
  • the two roller heads 4 are rigidly synchronized with each other by a drive, not shown, so that the rollers 5 mounted in them always act simultaneously on the hollow rod H.
  • only one roller 5 is shown in each of these two roller heads 4, but several rollers per roller head could also be provided.
  • more than two roller heads (generally arranged in pairs opposite one another) could also be provided if this is desired and possible, for example for reasons of space.
  • rollers 5 engage against the hollow rod H in the first rolling process against the arrow II
  • rollers 5 in the first rolling process attack in the sense of arrow II on the hollow rod H
  • the roller profiles can be flat or concave, symmetrical or asymmetrical. You can generate torque on the workpiece if desired.
  • An internally toothed shaft can be produced on this machine as follows:
  • the tubular hollow rod H is clamped at its thick point, which can be seen in the drawing (it corresponds to the original diameter), in the clamping device 3 on the toothed mandrel D and the hollow rod H is started in the sense of the arrow 7 to rotate, while the rotatingly driven (until then removed from the hollow rod H) rolling heads 4 slowly to the hollow rod H until they have approached the workpiece axis A as far as can be seen in the drawing.
  • the hollow rod H is usually moved more slowly than later in the direction of arrow II, or it is even moved back and forth somewhat. After all, the local processing density should not be so great that the dreaded disadvantages can occur.
  • each tooth Z of the inner profile is twisted somewhat helically, while this rotation is corrected during the second rolling process, so that each tooth of the workpiece follows the correct direction (here straight).
  • the finished hollow rod H is stretched out.
  • Another workpiece can be clamped and processed accordingly.
  • a tube is provided as the original workpiece, which has an outer diameter HA of 79 mm and an inner diameter of 63 mm at its point H1 remaining in its original thickness.
  • the tube is made of ST 52 steel with a tensile strength of 500 N per square millimeter. It is mounted on a mandrel D on which it is attached to the tapered point H2 is reduced to a tapered outer diameter HJ of 71.5 mm. It receives an internal toothing with teeth HZ corresponding to the mandrel D.
  • the larger inside diameter HK of the cavity in the tapered part H1 is 62.4 mm.
  • the hollow rod H is initially moved when piercing in the direction of arrow II and counter to this direction, that is, back and forth, while it is rotating in the direction of arrow 7.
  • the workpiece speed is kept at 136 revolutions per minute.
  • the hollow rod H is rotated further at the stated speed and is now advanced in the direction of arrow II at 1000 mm per minute, that is to say at approximately 7 mm per workpiece revolution.
  • a flawless hollow shaft with cleanly aligned and cleanly shaped teeth and a very smooth outer surface is obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP89113522A 1988-10-05 1989-07-22 Procédé de calibrage en réduction de la section transversale d'une pièce en rotation Withdrawn EP0362502A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3708/88A CH675840A5 (fr) 1988-10-05 1988-10-05
CH3708/88 1988-10-05

Publications (2)

Publication Number Publication Date
EP0362502A2 true EP0362502A2 (fr) 1990-04-11
EP0362502A3 EP0362502A3 (fr) 1990-08-29

Family

ID=4261808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113522A Withdrawn EP0362502A3 (fr) 1988-10-05 1989-07-22 Procédé de calibrage en réduction de la section transversale d'une pièce en rotation

Country Status (4)

Country Link
US (1) US5001916A (fr)
EP (1) EP0362502A3 (fr)
JP (1) JP2732908B2 (fr)
CH (1) CH675840A5 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013023877A1 (fr) * 2011-07-21 2013-02-21 Fci Automotive Holding Procédé de pré-déformation d'une broche de contact, utilisation d'un dispositif de pré-déformation et broche de contact

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6718809B1 (en) * 1998-01-10 2004-04-13 General Electric Company Method for processing billets out of metals and alloys and the article
US7861572B2 (en) * 2003-09-05 2011-01-04 Ernst Grob Ag Method and device for making at least partly profiled tubes
MXPA06008340A (es) * 2004-02-06 2007-04-17 Grob Ernst Fa Dispositivo y metodo para producir secciones perfiladas dentadas en piezas de trabajo.
US8230710B2 (en) * 2005-03-25 2012-07-31 American Axle & Manufacturing, Inc. Method for forming a slip joint assembly with coated splines
US20090215543A1 (en) * 2008-02-25 2009-08-27 American Axle & Manufacturing, Inc. Slip yoke with internal splines having permanent coating and related method
DE102008049825B4 (de) * 2008-10-01 2017-04-06 Thyssenkrupp Presta Aktiengesellschaft Gleithülse
KR101075323B1 (ko) * 2009-05-19 2011-10-19 대원강업주식회사 헬리코이드 리덕션 밀을 이용한 코일 스프링 제조방법
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
CH706436A1 (de) 2012-04-25 2013-10-31 Grob Ernst Fa Verfahren und Vorrichtung zur Herstellung von mit einer innenliegenden Laufradverzahnung versehenen dickwandigen Hohlrädern.
EP3206811B1 (fr) * 2014-10-17 2020-04-22 thyssenkrupp Presta AG Procédé de production d'un arbre creux profilé pour arbre de direction télescopique d'un véhicule automobile
CH714660A1 (de) 2018-02-16 2019-08-30 Grob Ernst Fa Vorrichtung und Verfahren zur Herstellung eines Hohlrades mit Innen- und Aussenverzahnung sowie Hohlrad.
CH714772A1 (de) * 2018-11-15 2019-09-13 Grob Ernst Fa Vorrichtung und Verfahren zum kaltumformenden Profilieren von Werkstücken.
EP4011512B1 (fr) * 2020-12-09 2024-09-25 Forge Pat GmbH Laminoir à lopins équipé d'un sous-ensemble manipulateur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499534A (en) * 1922-06-05 1924-07-01 John A Katzenmeyer Reducing cylindrical bodies
US3422518A (en) * 1967-10-20 1969-01-21 Valley Metallurg Processing Method of reforming tubular metal blanks into inner-fin tubes
CH658006A5 (de) * 1983-03-07 1986-10-15 Grob Ernst Fa Verfahren und vorrichtung zum kalibrierenden reduzieren der querschnittsflaeche eines dabei rotierenden werkstueckes.
JPS59174240A (ja) * 1983-03-22 1984-10-02 O S G Kk 転造成形方法および装置
CH670782A5 (fr) * 1986-08-19 1989-07-14 Grob Ernst Fa

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013023877A1 (fr) * 2011-07-21 2013-02-21 Fci Automotive Holding Procédé de pré-déformation d'une broche de contact, utilisation d'un dispositif de pré-déformation et broche de contact

Also Published As

Publication number Publication date
JPH02147110A (ja) 1990-06-06
CH675840A5 (fr) 1990-11-15
JP2732908B2 (ja) 1998-03-30
EP0362502A3 (fr) 1990-08-29
US5001916A (en) 1991-03-26

Similar Documents

Publication Publication Date Title
DE2549230C2 (fr)
DE2602639C2 (de) Verfahren und Maschine zum Bearbeiten wendelförmig geschweißter Rohre
DE1016222B (de) Verfahren und Vorrichtung zum Erzeugen gerader oder zur Werkstueckachse schraeg verlaufender, paralleler Profile, z.B. von Verzahnungen, durch einen Walzvorgang
EP0362502A2 (fr) Procédé de calibrage en réduction de la section transversale d'une pièce en rotation
DE1204615C2 (de) Maschine zum Kaltwalzen gerader oder zu der Werkstueckachse schraeg verlaufender paralleler Zahnradzaehne oder anderer Profile am Umfang eines zylindrischen Werkstuecks
EP0558815A1 (fr) Dispositif pour la fabrication d'une pièce creuse profilée au moins à l'intérieur dans une direction droite ou oblique par rapport à l'axe de la pièce, et son utilisation
CH670970A5 (fr)
DE1602135B2 (de) Verfahren zum herstellen von rohren aus zirkon und legierungen auf zirkonbasis durch kaltwalzen auf einem pilgerschrittwalzwerk
DE4315503B4 (de) Verfahren zum Herstellen eines hohlen Werkstücks, das wenigstens innen gerade oder schräg zur Werkstückachse profiliert ist
DE2720822C2 (fr)
DE19816403A1 (de) Vorrichtung zum Formen von Draht, mit einer Drahtbremseinrichtung
DE3304278A1 (de) Verfahren und werkzeuganordnung zum druecken einer zahnung
AT395835B (de) Verfahren zum herstellen einer parallelachsigen rotationskolbenmaschine
DE2808081A1 (de) Verfahren und vorrichtung zum herstellen wendelfoermiger rotorrohlinge fuer exzenterschneckenpumpen
DE19725453C2 (de) Verfahren zur Herstellung einer Hohlwelle
DE19510715C1 (de) Vorrichtung zum Schrägwalzen von rohr- oder stabförmigem Walzgut
DE19748133C2 (de) Verfahren und Vorrichtung zum automatischen Winden von geradlinig geführtem Draht zu gewendelten Druckfedern
DE1138013B (de) Verfahren und Vorrichtung zum Herstellen von an ihrem Umfang im wesentlichen laengsprofilierten zylindrischen Werkstuecken
DE3715393C2 (de) Verfahren zum Herstellen eines eine gerade oder schräge Innenverzahnung aufweisenden, relativ dickwandigen Hohlkörpers
DE922045C (de) Maschine zum Walzen von Innen- oder Aussenprofilen
DE3400315C2 (de) Verwendung eines Kalt-Schlag-Walzverfahrens
DE2439957A1 (de) Verfahren und vorrichtung zum kaltwalzen von parallelen profilen z.b. von zahnprofilen aus dem vollen material
DE3715392A1 (de) Verfahren zum herstellen eines eine gerade oder schraege innenverzahnung aufweisenden topfartigen hohlkoerpers
EP4323132B1 (fr) Procédé de production d'un composant avec un profil de denture, et outil
DE3401595A1 (de) Verfahren und vorrichtung zum formen zylindrischer produkte aus metall

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900727

17Q First examination report despatched

Effective date: 19910705

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19911116