EP0072765B1 - Vorrichtung zum Werkzeugwechseln an Pilgerschrittwalzwerken - Google Patents

Vorrichtung zum Werkzeugwechseln an Pilgerschrittwalzwerken Download PDF

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Publication number
EP0072765B1
EP0072765B1 EP82420109A EP82420109A EP0072765B1 EP 0072765 B1 EP0072765 B1 EP 0072765B1 EP 82420109 A EP82420109 A EP 82420109A EP 82420109 A EP82420109 A EP 82420109A EP 0072765 B1 EP0072765 B1 EP 0072765B1
Authority
EP
European Patent Office
Prior art keywords
rolls
rolling mill
assembly
axes
frame
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.)
Expired
Application number
EP82420109A
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English (en)
French (fr)
Other versions
EP0072765A1 (de
Inventor
François Grandemange
Michel Couturier
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.)
Vallourec SA
Original Assignee
Vallourec SA
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 Vallourec SA filed Critical Vallourec SA
Priority to AT82420109T priority Critical patent/ATE17664T1/de
Publication of EP0072765A1 publication Critical patent/EP0072765A1/de
Application granted granted Critical
Publication of EP0072765B1 publication Critical patent/EP0072765B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/14—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by pivotally displacing

Definitions

  • the device and the tool change process, objects of the invention relate to rolling mills with cold pilgrim's steps, with moving cage, intended to laminate long pieces such as tubes or bars or the like.
  • the cage supporting the rolls of the rolling mill is moved alternately with respect to the product to be rolled in synchronism with the rotation of the rolls , while the product to be rolled is intermittently advanced in the passage between the rolls.
  • the working rolls of these rolling mills consist of rolled rolls in chocks generally carried by the cage which, moved in an alternating movement along the rolling axis, ensures by fixed racks the rotation of the rolls on the product to laminate and strictly maintains these rolls in position, by opposing by its structure the efforts to separate said rolls during rolling.
  • a first method consists in manually intervening on the standstill cage positioned in the rolling mill. In the case of hoop cylinders, it is then possible, without removing the cylinder block, to remove the hoops. This intervention is delicate and dangerous because of the confinement of the device, the environment linked to the lubrication of the device and the weight of the parts to be handled. In addition, since we are already working on the stand of the rolling mill, we cannot proceed simultaneously on the stand or in the vicinity of it to other operations for changing auxiliary tools, such as pipe clamps , etc ... which has the effect of extending the overall tool change time.
  • FR 1 347 991 also discloses a rolling mill, the working rolls of which are reciprocated are housed in a carriage which itself reciprocates within a fixed cage. Means are described which make it possible to separate the assembly of the cylinders from the carriage and to extract this assembly laterally through an opening provided in the fixed cage by means of two extraction rods.
  • the object of the present invention is an improved device making it possible to change all or part of the working cylinders even more easily, in particular in the case of cylinders comprising hoops or shells.
  • This invention consists of a rolling mill with cold-arri steps, with a movable cage, comprising a frame associated with the rolling mill which slides laterally with respect to said rolling mill and thus allows the extraction of the integral assembly of the cylinders and their annexes, means tilting constituted by a cradle mounted on an axis or on rollers being provided and arranged so as to be able to act on this frame on which is fixed all the cylinders and their annexes, so as to tilt the plane which passes through the cylinder axes until this plane reaches the desired inclination.
  • the tilting means make it possible to tilt the plane while retaining the initial orientation of the axes of the cylinders.
  • the plane is tilted to the horizontal or to the vicinity of the horizontal.
  • the invention also relates to a process for changing rolls on a rolling vocational cold rolling mill, with a moving cage, according to claim 6.
  • the tilting means allow rotation associated or not with a translation of the plane passing through the axis of the cylinders.
  • the tilting means consist of a cradle mounted on rollers
  • the rollers move on rails having an appropriate curvature.
  • FIG. 1 there is a rolling mill (1) with civil steps comprising a cage, the uprights of which are seen in (2 and 3), two working rolls (4 and 4 ') with their chocks (5-5'-6 -6 ') and their rotational drive gears (7-7').
  • the two cylinders (4-4 ') and their chocks (5-5'-6-6') are joined in known manner by rods and bolts.
  • (6A) the housing of the heads thereof.
  • all of the cylinders (4-4 '), their chocks (5-5'-6-6') and their drive sprockets (7-7 ') came out of the cage of the rolling mill (1) and fixed on a frame (8) which slides laterally with respect to the whole rolling mill (1) according to the prior art.
  • This device makes it possible, after having raised the front rack (9) to exit the roll stand (1) fairly easily all of the two cylinders (4-4 ') and their annexes. We see however that to have access to the lower cylinder (4) and its chocks (5, 6), it is necessary to remove the upper cylinder (4 ') and its annexes (5', 6 ', 7'). The area in which the assembly of the two rolls is then does not allow, in view of the general mechanical design of the rolling mill, which is very dense in this part adjacent to the rolling mill proper, to make complex and multiple handling operations such as for example the provisional deposition of the upper cylinder.
  • the solution then consists, taking into account the delicate problems posed by the adjustment of the two superimposed cylinder blocks to transport the assembly (4-4 ') with its annexes (5-5'-6-6'-7-7') in the tool shop.
  • the handling of such an assembly is made difficult by its very large mass which, for a large rolling mill can be of the order of 8 to 10 tonnes.
  • FIGs 2, 3 and 4 there is shown a rolling mill with cold crawl steps (10), comprising a cage (11), equipped according to the invention.
  • the assembly of the two working cylinders 12-12 ') of their chocks (13-13'-14-14') and their rotational drive pinions (15-15 ') is mounted on a frame (16) , which can itself be secured with a cradle (17), mounted on a horizontal axis (18) parallel to the axes of the working rolls and therefore perpendicular to the rolling axis.
  • This axis (18) allows the cradle (17), the frame (16) and the set of two cylinders (12-12 ') with their annexes, to pivot by rotation in a vertical plane parallel to the rolling axis , that is to say the axis of movement of the parts to be laminated, the axes of the cylinders (12-12 ') retaining the same orientation.
  • the two frets, lower (20) and upper (20 ') can be changed on site without having to dismantle the entire upper cylinder (12') and its annexes.
  • the adjustment and setting of the two frets (20-20 ') is done in relation to the shafts (21-21') of each of the working cylinders (12-12 ') without having to move or adjust the relative position of the shafts (21-21 ') themselves, nor the rest of the cylinders (12-12').
  • the work of changing the frets (20-20 ') and their annexes is greatly facilitated.
  • the lateral drive device for the frame (16) is shown diagrammatically in FIG. 2 by a telescopic jack (22).
  • the frame (16) also comprises a jack (23) actuating a device of inclined shims which allows, according to a known technique, to release all of the cylinders (12-12 ') and their annexes when they are taken to take them remove from the stand (11) of the rolling mill (10).
  • the device for tilting the frame (16) by the cradle (17) is designed so as to take advantage of the little space available and not to hinder the passage of the mechanical devices of the rolling mill.
  • a bore (24) in the base (25) is provided to allow the passage of the shaft controlling the rotation of the product to be laminated.
  • the rolling mill kinematics control assembly (rolling kinematics, rotation kinematics, advance kinematics) as well as the entire tool change device is located on the same side of the rolling mill relative to the plane vertical passing through the rolling axis, thus completely freeing the other side.
  • the device for controlling the rotation of the cradle (17) around the axis (18) is not represented. It can be carried out in various ways well known to those skilled in the art. It is also understood that the frame (16) is designed in such a way that it can successively move laterally, to ensure the extraction of the integral assembly of the cylinders, from the stand (11) of the rolling mill (10) , then freely tilt with the cradle (17).
  • said cradle (17) has a side face (26).
  • the face (26) of the cradle (17) comes to bear on a stop (27).
  • the use of the device is easily understandable by examining FIGS. 2, 3 and 4.
  • the chocks (13-13'-14-14 ') are held together 2 to 2 by connection means not shown.
  • the set of cylinders is released from the cage (11) by the action of the jack (23).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
  • Toys (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Turning (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Claims (7)

1. Pilgerschritt-Kaltwalzwerk mit mobilem Walzgerüst, das ein mit dem Walzwerk verbundenes Gehäuse aufweist, das bezüglich des Walzwerks quer gleiten kann und somit dans Herausziehen der Einheit der untereinander starr verbundenen Zylinder und deren zugehörigen Teilen erlaubt, gekennzeichnet, durch Kippvorrichtungen, die aus einer Kippwiege bestehen, die auf einer Achse oder auf Rollen angebracht ist, wobei die Kippvorrichtungen auf das Gehäuse einwirken können, auf dem die aus den Zylindern und ihren zusätzlichen Teilen bestehende Einheit befestigt ist, derart, dass die Ebene, die die Zylinderachsen enthält, so weit geneigt werden kann, bis diese Ebene die gewünschte Neigung hat.
2. Pilgerschritt-Kaltwalzwerk nach Anspruch 1, dadurch gekennzeichnet, dass mit den Kippvorrichtungen die Ebene, die die Zylinderachsen enthält, geneigt werden kann, und dabei die ursprüngliche Orientierung dieser Zylinder beibehalten wird.
3. Pilgerschritt-Kaltwalzwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mit den Kippvorrichtungen die Ebene, die die Zylinderachsen enthält, bis in die Horizontale geneignt werden kann.
4. Pilgerschritt-Kaltwalzwerk nach einem der Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die die Kippvorrichtung tragende Sockel mit einer Öffnung versehen ist, die den Durchgang der Welle ermöglicht, die die Drehung des zu walzenden Guts steurt.
5. Pilgerschritt-Kaltwaltzwerk nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Gesamtheit der mechanischen Vorrichtungen des Walzwerks, die Rotationsvorrichtungen, die Vortriebsvorrichtungen, die Walzvorrichtungen sowie die Kippvorrichtungen der Einheit bestehend aus den miteinander verbundenen Zylindern auf einer selben Seite bezüglich einer senkrechten, durch die Walzachse verlaufenden Ebene angeordnet sind.
6. Verfahren zum Auswechseln von Zylindern . eines Pilgerschritt-Kaltwalzwerks mit mobilem" Walzgerüst, bei dem die Gesamtheit der Zylinder mit ihren zugehörigen Teilen aus dem Walzgerüst durch Verschiebung eines Gehäuses herausgezogen wird, dadurch gekennzeichnet, dass nach der Verschiebung das Gehäuse, auf dem die Einheit der Zylinder und ihrer zugehörigen Teile befestigt ist, mit Kippvorrichtungen fest verbunden wird, wobei die Kippvorrichtungen aus einer Kippwiege (17) bestehen, die auf einer Achse (18) oder auf Rollen angebracht ist, und dass dann diese Kippvorrichtungen derart betätigt werden, dass die Ebene, die die Zytinderachsen enthält, soweit geneigt wird, bis diese Ebene die gewünschte Neigung hat oder selbst in den häufigsten Fällen in der Horizontalen liegt, und dadurch, dass die notwendigen Demontagemassnahmen und die Reparatur oder Ersetzung der Zylinderfretten und das anschliessende Wiederanbringen dieser Fretten durchgeführt werden und dadurch, dass nach dem Wiederanbringen die Kippvorrichtungen dazu verwendet werden, die Ebene, die die Zylinderachsen enthält, in die Vertikale zu bringen und dass die Einheit der Zylinder und deren zugehörigen Teile durch Verschiebung des Gehäuses in das Walzgerüst zurückgeführt wird.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Kippvorrichtungen, die Ebene, die die Zylinderachsen enthält, unter Beibehaltung der ursprünglichen Orientierung dieser Zylinder neigen können.
EP82420109A 1981-08-06 1982-07-30 Vorrichtung zum Werkzeugwechseln an Pilgerschrittwalzwerken Expired EP0072765B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82420109T ATE17664T1 (de) 1981-08-06 1982-07-30 Vorrichtung zum werkzeugwechseln an pilgerschrittwalzwerken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115571 1981-08-06
FR8115571A FR2510913A1 (fr) 1981-08-06 1981-08-06 Dispositif de changement d'outillage de laminoir a froid a pas de pelerin

Publications (2)

Publication Number Publication Date
EP0072765A1 EP0072765A1 (de) 1983-02-23
EP0072765B1 true EP0072765B1 (de) 1986-01-29

Family

ID=9261397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420109A Expired EP0072765B1 (de) 1981-08-06 1982-07-30 Vorrichtung zum Werkzeugwechseln an Pilgerschrittwalzwerken

Country Status (5)

Country Link
EP (1) EP0072765B1 (de)
JP (1) JPS5829508A (de)
AT (1) ATE17664T1 (de)
DE (1) DE3268811D1 (de)
FR (1) FR2510913A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159206A (ja) * 1983-02-28 1984-09-08 Mitsubishi Heavy Ind Ltd バツクアツプロ−ルフレ−ムの反転支持装置
JPH0673043B2 (ja) * 1986-03-19 1994-09-14 新王子製紙株式会社 静電記録体
US4993251A (en) * 1989-07-07 1991-02-19 Sandvik Special Metals Corporation Rollstand having easily replaceable roll dies
JPH0617436A (ja) * 1991-01-30 1994-01-25 Sanko Kensetsu Kogyo Kk コンクリート構造物
DE102015122701A1 (de) 2015-12-23 2017-06-29 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE541384C (de) * 1932-01-06 H C Gustav Asbeck Dr Ing Universalwalzwerk
DE604909C (de) * 1932-01-01 1934-11-02 Hirsch Verfahren zum Auswalzen von Rohren auf Pilgerschrittwalzwerken
DE848336C (de) * 1951-05-20 1952-09-04 Meer Ag Maschf Warmpilgerschrittwalzwerk
DE1602109A1 (de) * 1967-03-30 1970-04-09 Mannesmann Meer Ag Walzgeruest fuer Kaltpilgermaschinen

Also Published As

Publication number Publication date
FR2510913A1 (fr) 1983-02-11
ATE17664T1 (de) 1986-02-15
DE3268811D1 (en) 1986-03-13
EP0072765A1 (de) 1983-02-23
JPH0138562B2 (de) 1989-08-15
JPS5829508A (ja) 1983-02-21
FR2510913B1 (de) 1984-12-28

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