EP0774306A1 - Procédé et dispositif d'étirage droit de matériau à étirer en plusieurs étapes - Google Patents

Procédé et dispositif d'étirage droit de matériau à étirer en plusieurs étapes Download PDF

Info

Publication number
EP0774306A1
EP0774306A1 EP96250248A EP96250248A EP0774306A1 EP 0774306 A1 EP0774306 A1 EP 0774306A1 EP 96250248 A EP96250248 A EP 96250248A EP 96250248 A EP96250248 A EP 96250248A EP 0774306 A1 EP0774306 A1 EP 0774306A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
force
ring
ring holder
units
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
EP96250248A
Other languages
German (de)
English (en)
Other versions
EP0774306B1 (fr
Inventor
Horst Stinnertz
Peter Dipl.-Ing. Kalkenings
Karl Heinz Dipl.-Ing. Häusler
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.)
SMS Siemag AG
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0774306A1 publication Critical patent/EP0774306A1/fr
Application granted granted Critical
Publication of EP0774306B1 publication Critical patent/EP0774306B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/20—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of essentially unlimited length

Definitions

  • the invention relates to a method and a device for drawing elongated metallic workpieces, in particular tubes, for reducing the cross-section in more than one drawing stage by means of at least two successive drawing units which grip the workpiece on the outer circumference and have two alternately moving clamping slides, which continuously pass the workpiece through one pull a drawing ring assigned to each drawing unit and arranged in a drawing ring holder, as well as a method for threading the workpiece into the device.
  • EP 0182922 discloses a generic method and a device for carrying out this method, in which the drawing material is at least temporarily deliberately deflected out of its axis between two drawing stages, so that a buffer can be formed which prevents the drawing material from tearing.
  • the disadvantage of this method is the high mechanical engineering effort and the space required for the device to deflect the drawing material.
  • the aim of the present invention is to provide a simple, To create space-saving, economically operated and inexpensive to produce pulling device with which the workpiece to be drawn can be threaded in a simple manner and reduced in tolerance in several stages.
  • a method is proposed that is characterized in that the drawing units can be driven independently of one another in such a force and / or torque-controlled manner that during the drawing process in the workpiece section located between the drawing units there is always a defined deflection of the workpiece from the Straight-line pre-tension is maintained.
  • the invention to overcome the disadvantages of the prior art, it is proposed to dispense with loop formation in order to obtain a compact, clear and inexpensive pulling device.
  • the actual value of the pulling force be measured permanently and compared with a preset value stored in a computer, and that when the preset value is exceeded or undershot, a signal is given to the drive or drives of one or more pulling units in order to Adjust the pulling force to the default value.
  • the drawing force is preferably measured and fed to the computer as a specification for a retention and / or tractive force, in which a superimposed torque curve is formed as a function of the momentary drawing speed, superimposed on acceleration moments and loss moments of the drawing units, which is used for regulation of the drive of the respective drawing unit is used.
  • the limit torque curve is intended to ensure that the tension between two adjacent drawing units is kept as low as possible, so that the ductility of the drawing material can be optimally used.
  • the respective drawing speed results from the drawing speed of the preceding unit and the stretching of the drawing material in the current drawing unit. Since this stretching is subject to certain tolerances, it must be ensured that there is neither an oversupply of drawn material nor an impermissibly high tensile force between two adjacent drawing units.
  • the present description of the force effect relates to adjacent drawing machines, the drawing ring holders of which are rigidly connected to the machine in a known manner. If, on the other hand, one of the drawing ring holders, preferably the holder of the second machine, which follows a first machine, is controlled to be movable as a function of the total force, the directions of force also change.
  • a device for carrying out the method according to the invention is therefore characterized in that at least one drawing ring holder of a drawing unit is provided with a measuring device for the permanent detection of the drawing force and the drawing ring holder (s) can be moved in the longitudinal direction of the workpiece in a force and / or torque-controlled manner depending on the measured value can be clamped.
  • the drawing force is measured and specified as the specification of the holding and moving device for the respective drawing ring holder. If the device for holding and moving the drawing ring holder is controlled in a force-dependent manner so that it remains in position, any excess supply of drawn material becomes a tendency for the drawing ring holder to move in Lead pull direction. If the total force measured decreases due to the movement of the drawing ring holder, the speed of the drive motor of the following machine must be increased accordingly. If the total force measured does not change due to such a method of the drawing ring holder, other reasons such as tolerances of the drawing material or the influence of lubrication are the cause of the increase in the total force and can be countered by increasing the holding force for the drawing ring holder. Since it is inevitable in practice that tears occasionally occur during pulling, these can be registered directly by the permanent pulling force measuring devices and cause all pulling devices to open.
  • the measuring device advantageously consists of a load cell arranged between the drawing ring holder and the drawing ring.
  • optical sensors between the drawing units for detecting an unwanted dodging of the drawing material from the drawing axis, which sensors are linked to the computer for regulating and / or switching off the drives.
  • Such light curtains between two drawing units for monitoring the position of the material to be drawn can be used both for the additional monitoring of pipe rippers and for the additional control of a material oversupply between two drawing units.
  • the pulling-in process is therefore started when the pull ring holder and front pull slide have their shortest possible distance from each other. If the drawing device retracts the drawing ring holder against the direction of drawing under pulling force at the same time as the pipe is pulled in, the length of the pipe drawn in is extended accordingly. As a result, the pull-in operation can be completed with only one pull-in and thus be shortened considerably.
  • the two drawing carriages of the drawing unit preferably transport the detected workpiece alternately to the drawing ring following in the drawing direction, where the drawing-in process is repeated with steps a to d.
  • the inventive concept is explained in more detail using an exemplary embodiment.
  • the only drawing figure shows the arrangement of two drawing units.
  • the drawing rings (1, 2) are supported against the drawing ring holder (3, 4) by means of load cells (5, 6).
  • the drawing ring holder (3, 4) is mounted in a travel device (7, 8) which is supported against a hydraulic cylinder (9, 10).
  • the material to be drawn is drawn by two alternating pulling slides (11, 12) and (13, 14), the clamping jaws (15, 16) being closed when they move in the pulling direction and opened when they move back against the pulling direction. Pulling force and alternating slide movement are generated by the drive motors (17, 18).
  • the pulling slides (11, 13) are at their front dead center.
  • the drawing ring holder (3, 4) in turn are in their rear dead centers, ie close to the drawing slide (11, 13). A beginning of the drawing material provided with a rod is pushed through the drawing ring (1) to such an extent that an auxiliary pulling device located in the plane of the drawing carriage can span the rod.
  • the drawing ring holder (3) and the drawing slide (11) preferably move in the opposite direction from their dead center position and thus produce a drawn pipe hinge corresponding to the sum of the two travel paths.
  • the auxiliary pulling pliers are opened and the pull ring holder moves in the pulling direction to the starting dead center and in doing so transports the drawn material so far that it can be gripped by the clamping jaws (15) of the pulling slide (11).
  • the pulling sled (11, 13) now alternately pull the material to be drawn up to the pull ring (2).
  • the drawing-in process is now repeated as described for drawing unit (1).
  • the clamping jaws (15, 16) in the drawing slide (11, 12) are opened and the cylinder (9) is released from pressure.
  • the measured pulling force serves as a control variable for the torque of the second pulling unit.
  • the load cell (6) determines the pulling force and communicates this to the control mechanism of the hydraulic cylinder (10), which then exerts a corresponding holding force on the pulling ring holder (4).
  • a computer program taking into account the dynamics and kinematics of the slide drive, the mechanical losses and the measured pulling force, adjusts its torque in such a way that the ductility limit of the drawn goods is below a certain amount and that the drawn goods between the two drawing units are exposed to a low defined tensile stress . If the required pulling force increases during pulling, the pull ring holder (3) is pushed back against the cylinder (10). If the total force on the die is thereby reduced to the order of magnitude registered during the drawing in, the drawing speed in the second unit is insufficient and the speed of the motor (18) must be increased.
  • a scanning roller (19) on the drawing material permanently measures the current drawing speed. If the pulling speed measured in this way is lower than that determined from the pulling slide, the clamping jaws slip. The values of the scanning roller are then decisive for the speed control. The speed difference can, if necessary, be used to abort the pulling process in order to check the clamping conditions.
  • a light curtain (20) controls the axial position of the drawn goods. If there is an oversupply of drawn material that can no longer be controlled by the regulation, this tries to avoid or even buckle it. This is registered and used to influence the control or to shut down the units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Wire Processing (AREA)
EP96250248A 1995-11-15 1996-10-31 Procédé et dispositif d'étirage droit de matériau à étirer en plusieurs étapes Expired - Lifetime EP0774306B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19544383 1995-11-15
DE19544383A DE19544383C1 (de) 1995-11-15 1995-11-15 Verfahren und Vorrichtung zum Geradeausziehen und Einfädeln langen Ziehgutes in mehreren Schritten

Publications (2)

Publication Number Publication Date
EP0774306A1 true EP0774306A1 (fr) 1997-05-21
EP0774306B1 EP0774306B1 (fr) 2001-07-25

Family

ID=7778633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250248A Expired - Lifetime EP0774306B1 (fr) 1995-11-15 1996-10-31 Procédé et dispositif d'étirage droit de matériau à étirer en plusieurs étapes

Country Status (5)

Country Link
US (1) US5771727A (fr)
EP (1) EP0774306B1 (fr)
AT (1) ATE203434T1 (fr)
DE (2) DE19544383C1 (fr)
ES (1) ES2158237T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110153207A (zh) * 2018-12-04 2019-08-23 上海北特科技股份有限公司 棒材直条连续拉拔装置及利用其实现的棒材拉拔方法
CN111515319A (zh) * 2020-04-19 2020-08-11 金成高 一种用于建筑施工的预应力钢筋拉伸装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800652A1 (fr) * 1999-11-04 2001-05-11 Financ Robolix Procede et dispositif de controle de la qualite des formages realises par une machine a former des extremites de tubes
CN1099331C (zh) * 2000-05-26 2003-01-22 清华大学 弹性合金的电子拔丝方法与装置
JP4267221B2 (ja) 2001-01-18 2009-05-27 日本伸管株式会社 長尺物の連続引抜き方法及びその装置
DE10122658C2 (de) * 2001-05-10 2003-05-28 Sms Meer Gmbh Zugeinheit zum Ziehen von langgestrecktem Material sowie Ziehstraße
DE10122657B4 (de) * 2001-05-10 2006-07-13 Sms Meer Gmbh Zugeinheit für eine Ziehmaschine sowie Verfahren zum Ziehen eines Ziehgutes mit dieser Zugeinheit und diskontinuierlich arbeitende Ziehmaschine
KR100903956B1 (ko) 2007-12-21 2009-06-25 (주)대신제일 복합 인발장치
AT507273B1 (de) * 2008-09-14 2014-03-15 Sms Meer Gmbh Gradausziehmaschine und verfahren zum gradausziehen eines werkstückes
DE102013021675A1 (de) 2013-12-18 2015-07-02 Joachim Graefe Profile und Rohre kontinuierlich-integriert formen
DE102016106026B3 (de) * 2016-04-01 2017-10-05 Sms Group Gmbh Ziehanlagen und Ziehverfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798939A (en) * 1971-06-30 1974-03-26 O Mertens Method and means for regulating the tensioning of workpieces in multi-pass cold-drawing apparatus
EP0182922A1 (fr) 1984-10-19 1986-06-04 Schumag Aktiengesellschaft Procédé d'étirage droit de ronds et de tubes, ainsi que de profilé plein et creux, et installation à cet effet
US4662203A (en) * 1984-09-20 1987-05-05 Kabushiki Kaisha Toshiba Multistage wire drawing apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138243A (en) * 1962-04-02 1964-06-23 Oakley Ind Inc Drawing apparatus
DE1930700B2 (fr) * 1969-06-18 1971-01-28
US4127999A (en) * 1974-12-19 1978-12-05 Th. Kieserling & Albrecht Gripping arrangement
DE2600898C3 (de) * 1976-01-12 1980-08-28 Th. Kieserling & Albrecht, 5650 Solingen Spann- und Auszugseinrichtung für Schälmaschinen und Ziehbänke
DE2806380C3 (de) * 1978-02-13 1980-11-06 Mannesmann Ag, 4000 Duesseldorf Schlittenziehmaschine
DE3729892A1 (de) * 1987-09-07 1989-03-23 Kieserling Ziehmaschinen Ziehmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798939A (en) * 1971-06-30 1974-03-26 O Mertens Method and means for regulating the tensioning of workpieces in multi-pass cold-drawing apparatus
US4662203A (en) * 1984-09-20 1987-05-05 Kabushiki Kaisha Toshiba Multistage wire drawing apparatus
EP0182922A1 (fr) 1984-10-19 1986-06-04 Schumag Aktiengesellschaft Procédé d'étirage droit de ronds et de tubes, ainsi que de profilé plein et creux, et installation à cet effet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110153207A (zh) * 2018-12-04 2019-08-23 上海北特科技股份有限公司 棒材直条连续拉拔装置及利用其实现的棒材拉拔方法
CN111515319A (zh) * 2020-04-19 2020-08-11 金成高 一种用于建筑施工的预应力钢筋拉伸装置

Also Published As

Publication number Publication date
ES2158237T3 (es) 2001-09-01
DE19544383C1 (de) 1997-04-10
DE59607353D1 (de) 2001-08-30
EP0774306B1 (fr) 2001-07-25
US5771727A (en) 1998-06-30
ATE203434T1 (de) 2001-08-15

Similar Documents

Publication Publication Date Title
EP2273567B1 (fr) Procédé et dispositif destinés à la tension d'une bande de soudage
DE102009061264B3 (de) Gradausziehmaschine und Verfahren zum Gradausziehen eines Werkstücks durch einen Ziehring
EP0774306B1 (fr) Procédé et dispositif d'étirage droit de matériau à étirer en plusieurs étapes
DE10122657B4 (de) Zugeinheit für eine Ziehmaschine sowie Verfahren zum Ziehen eines Ziehgutes mit dieser Zugeinheit und diskontinuierlich arbeitende Ziehmaschine
DE69619513T2 (de) Verfahren und vorrichtung zum züchten von einkristallen
DE10122658C2 (de) Zugeinheit zum Ziehen von langgestrecktem Material sowie Ziehstraße
DE3119600A1 (de) Vorrichtung zum zufuehren von waeschestuecken zu einer mangel
EP1317975A1 (fr) Dispositif pour la fabrication de fil etiré
EP0759331B1 (fr) Dispositif de transport transversal pas à pas de profilés entre une presse à extruder et une presseuse à tension
DE19636322C1 (de) Verfahren und Vorrichtung zum Einfädeln von Rohren in eine Ziehvorrichtung
EP0661113B1 (fr) Laminoir à pas de pélerin pour le laminage à froid de tubes
EP1514617A1 (fr) Dispositif de tréfilage et méthode d'utilisation d'un dispositif de tréfilage
DE69012966T2 (de) Kontinuierliches Ziehverfahren zum Geradeziehen und Vorrichtung zur Durchführung des Verfahrens.
DE3009779A1 (de) Verfahren zur antriebsregelung fuer geradeausziehmaschinen
EP1669141B1 (fr) Procédé pour le réglage de la section des fils sortant d'un train de laminage de fil et train de laminage de fil
EP0300262B1 (fr) Procédé d'extraction du produit d'une presse d'extrusion de barres ou de tubes, ainsi que système de commande pour un dispositif d'extraction à cet effet
DE602004005032T2 (de) Verfahren und anordnung in beschichtungsstrasse für faserformiges produkt oder faserformige produkte
DE3401075C2 (fr)
DE3404807A1 (de) Einrichtung zum regeln einer ausziehvorrichtung
DE19529831B4 (de) Strecke mit Verstellvorrichtung der Streckwerkswalzen
DE102019207261A1 (de) Rückschrumpf und Kettenspanner einer Folienreckanlage mit Längsschrumpf
EP1483067A1 (fr) Dispositif de retrait d'une barre produite dans une extrudeuse a barre et tuyau
EP0362698A2 (fr) Machine pour le cintrage automatique de tubes et objets similaires
EP1317976A2 (fr) Dispositif pour la fabrication de fil étiré
DE102016123825B4 (de) Verfahren zum Abziehen und Abtrennen von Profilen aus einer Strangpressanlage sowie Abzugs- und Abtrennvorrichtung

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: A1

Designated state(s): AT BE DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19970526

17Q First examination report despatched

Effective date: 19991223

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SMS DEMAG AG

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT SE

REF Corresponds to:

Ref document number: 203434

Country of ref document: AT

Date of ref document: 20010815

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010726

REF Corresponds to:

Ref document number: 59607353

Country of ref document: DE

Date of ref document: 20010830

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2158237

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010914

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20010925

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011011

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20011024

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011031

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

BERE Be: lapsed

Owner name: SMS DEMAG A.G.

Effective date: 20011031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021017

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021101

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040501

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031