EP1013353A2 - Method for controlling a hydraulic rotating and feeding device for a cold pilger mill - Google Patents
Method for controlling a hydraulic rotating and feeding device for a cold pilger mill Download PDFInfo
- Publication number
- EP1013353A2 EP1013353A2 EP99250435A EP99250435A EP1013353A2 EP 1013353 A2 EP1013353 A2 EP 1013353A2 EP 99250435 A EP99250435 A EP 99250435A EP 99250435 A EP99250435 A EP 99250435A EP 1013353 A2 EP1013353 A2 EP 1013353A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- drive
- hydraulic motor
- cold pilger
- controlling
- 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
Links
- 238000000034 method Methods 0.000 title claims description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
Images
Classifications
-
- 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
- B21B21/06—Devices for revolving work between the steps
- B21B21/065—Devices for revolving work between the steps for reciprocating stands
Definitions
- the invention relates to a method for regulating a hydraulic turning and Feed drive for a cold pilger rolling mill for the production of pipes in one of a crank mechanism which can be moved back and forth in the rolling direction, the Roll tapered calibrated rolls with changing rotation over the rolling stock and depending on the position of the crankshaft, the pipe is temporarily pushed forward and release, the turning and advancing of the tube using the associated drive elements of associated pressure medium-controlled Hydraulic motors.
- the complex route control means that it is difficult Localize errors.
- Well-trained experts are needed to clarify whether it is is a malfunction in the servohydraulics, in the control or in the mechanics acts. Such highly qualified personnel are in many pipe manufacturing companies not available.
- the object of the present invention is based on a known regulation a hydraulic rotary and feed drive an equipment for a Cold pilger rolling mill, with which the rotary and feed drive reliably, maintenance-friendly and inexpensive.
- the invention proposes that the Pressure supply of each hydraulic motor is regulated via a proportional valve, which depending on the required path of the moved by this hydraulic motor Drive organ is opened for a time interval proportional to this path.
- the regulation according to the invention is carried out using an easily understandable logic Help from simple components.
- the complicated route regulation is replaced by the specification of a time interval in which a control valve remains open. So that becomes a cost-effective solution to the problem at hand, found at the same time requires little maintenance and no unusual requirements to the maintenance staff.
- each drive member or hydraulic motor movement measured and stored with a Setpoint value is compared, and that based on detected deviations Time intervals for valve opening are corrected.
- the proposed regulation is sufficient because of its reliability and accuracy for the operation of a generic cold pilger rolling mill; with a simple The cold pilger rolling mill can also be operated without a demanding control operate. System faults can be easily located because the previously complex Position control of the servo valves is omitted.
- 1 denotes a hydraulic motor, which is connected to the spur gear 2, 3, 4 a sleeve 6 encompassing the tube 5 rotates, which in turn with the chuck 7 is connected.
- the chuck 7 is equipped with jaws 8 which are connected to the Surface of the tube 5 can be created and clamp it so that at Actuation of the hydraulic motor 1, the torque introduced via the transmission 2 to 4 is transferred to the tube 5.
- the associated control scheme according to the invention is shown in FIG.
- the crank angle ⁇ is measured on the crankshaft.
- a start value ⁇ start is predefined externally. If the crank angle ⁇ is greater than the start value ⁇ start , a proportional valve is opened for the time T. As a result, the chuck 7 is moved at the rotational speed ⁇ via the hydraulic drive 1, which results in the rotational angle ⁇ is during the time interval T.
- Shall ⁇ is proportional to the difference from the desired angle of rotation and the actual angle of rotation is ⁇ , a correction value .DELTA.T is calculated for the time interval .DELTA.T, in which the valve remains open.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Fluid-Pressure Circuits (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Regeln eines hydraulischen Dreh- und Vorschubantriebes für ein Kaltpilgerwalzwerk zur Herstellung von Rohren in einem von einem Kurbeltrieb in Walzrichtung hin- und herbewegbaren Walzgerüst, dessen verjüngend kalibrierte Walzen mit wechselndem Drehsinn über dem Walzgut abrollen und das Rohr abhängig von der Stellung der Kurbelwelle zeitweise zum Vorschieben und Drehen freigeben, wobei das Drehen und Vorschieben des Rohres mittels den daran angreifenden Antriebsorganen zugeordneter druckmittelgeregelter Hydromotoren erfolgt.The invention relates to a method for regulating a hydraulic turning and Feed drive for a cold pilger rolling mill for the production of pipes in one of a crank mechanism which can be moved back and forth in the rolling direction, the Roll tapered calibrated rolls with changing rotation over the rolling stock and depending on the position of the crankshaft, the pipe is temporarily pushed forward and release, the turning and advancing of the tube using the associated drive elements of associated pressure medium-controlled Hydraulic motors.
In den 60er Jahren wurden die Bewegungen der Dreh- und Vorschubantriebe für das Rohr bei der Ausübung des Kaltpilgerwalzverfahrens hydromechanisch dargestellt, d.h. die Bewegung der Steuerkolben der Ventile der Hydraulikmotoren wurde durch Kurvenscheiben vorgegeben. Diese mechanisch aufwendige Art der Ventilansteuerung führte zu häufigen Ausfällen; weiterhin traten wegen sehr harter Bremsrampen häufig Rohrleitungsbrüche auf.In the 1960s, the movements of the rotary and feed drives for the Pipe shown hydromechanically when performing the cold pilger rolling process, i.e. the movement of the control pistons of the valves of the hydraulic motors was controlled by Cam discs specified. This mechanically complex type of valve control led to frequent failures; continued to occur frequently due to very hard braking ramps Pipe breaks.
In den Kaltpilgerwalzwerken der 90er Jahre wurde mit Hilfe einer sehr aufwendigen servohydraulischen Wegregelung die Bewegung der ansonsten rein mechanisch mit Kurvenscheibengetrieben erzeugten Dreh- und Vorschubbewegung nachempfunden. Dieses System arbeitet zuverlässig, weist aber hinsichtlich Herstellkosten und Wartung Nachteile auf. Bei den zum Einsatz kommenden Servoventilen handelt es sich um Spezialfabrikate, die im Schadensfall lange Lieferzeiten haben. Wenn diese Servoventile als Ersatzteile bevorratet werden, müssen sie regelmäßig von Konservierungsmittel gereinigt und neu konserviert werden. In the cold pilgrim rolling mills of the 90s, a very complex servohydraulic position control the movement of the otherwise purely mechanically Cam-disk driven rotation and feed movement modeled. This system works reliably, but shows in terms of manufacturing costs and maintenance Disadvantages. The servo valves used are Special brands that have long delivery times in the event of damage. If those Servo valves are stocked as spare parts, they must be regularly replaced by Preservatives are cleaned and re-preserved.
Hinzu kommt, daß die aufwendige Wegregelung dazu führt, daß es schwierig ist, Fehler zu lokalisieren. Es sind gut ausgebildete Experten notwendig, die klären, ob es sich um eine Störung in der Servohydraulik, in der Regelung oder der Mechanik handelt. Derartig hoch qualifiziertes Personal ist in vielen Rohrherstellungsbetrieben nicht verfügbar.In addition, the complex route control means that it is difficult Localize errors. Well-trained experts are needed to clarify whether it is is a malfunction in the servohydraulics, in the control or in the mechanics acts. Such highly qualified personnel are in many pipe manufacturing companies not available.
Aufgabe der vorliegenden Erfindung ist es, ausgehend von einer bekannten Regelung eines hydraulischen Dreh- und Vorschubantriebes eine Ausrüstung für ein Kaltpilgerwalzwerk zu schaffen, mit der der Dreh- und Vorschubantrieb zuverlässig, wartungsfreundlich und kostengünstig realisiert werden kann.The object of the present invention is based on a known regulation a hydraulic rotary and feed drive an equipment for a Cold pilger rolling mill, with which the rotary and feed drive reliably, maintenance-friendly and inexpensive.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Druckmittelzufuhr jedes Hydromotors über ein Proportionalventil geregelt wird, das abhängig von dem geforderten Weg des von diesem Hydromotor bewegten Antriebsorgans für ein diesen Weg proportionales Zeitintervall geöffnet wird.To solve the problem, the invention proposes that the Pressure supply of each hydraulic motor is regulated via a proportional valve, which depending on the required path of the moved by this hydraulic motor Drive organ is opened for a time interval proportional to this path.
Die erfindungsgemäße Regelung erfolgt mit einer einfach nachvollziehbaren Logik mit Hilfe von einfachen Komponenten. Die komplizierte Wegregelung wird ersetzt, durch die Vorgabe eines Zeitintervalls, indem ein Steuerventil geöffnet bleibt. Damit wird eine kostengünstige Lösung für das anstehende Problem gefunden, die zugleich mit geringem Wartungsaufwand auskommt und keine außergewöhnlichen Anforderungen an das Wartungspersonal stellt.The regulation according to the invention is carried out using an easily understandable logic Help from simple components. The complicated route regulation is replaced by the specification of a time interval in which a control valve remains open. So that becomes a cost-effective solution to the problem at hand, found at the same time requires little maintenance and no unusual requirements to the maintenance staff.
In einer Ausgestaltung der Erfindung ist vorgesehen, daß die von jedem Antriebsorgan oder Hydromotor ausgeführte Bewegung gemessen und mit einem gespeicherten Sollwert verglichen wird, und daß anhand festgestellter Abweichungen die Zeitintervalle für die Ventilöffnung korrigiert werden.In one embodiment of the invention it is provided that each drive member or hydraulic motor movement measured and stored with a Setpoint value is compared, and that based on detected deviations Time intervals for valve opening are corrected.
Die vorgesehene Regelung ist wegen der Zuverlässigkeit und Genauheit ausreichend für den Betrieb eines gattungsgemäßen Kaltpilgerwalzwerkes; mit einem einfachen Regelkreis läßt sich das Kaltpilgerwalzwerk auch ohne anspruchsvolle Regelung betreiben. Fehler der Anlage lassen sich einfach orten, weil die bislang aufwendige Wegregelung der Servoventile entfällt. The proposed regulation is sufficient because of its reliability and accuracy for the operation of a generic cold pilger rolling mill; with a simple The cold pilger rolling mill can also be operated without a demanding control operate. System faults can be easily located because the previously complex Position control of the servo valves is omitted.
Die Erfindung wird nachfolgend am Beispiel eines Drehantriebes für das Rohr oder die Dornstange erläutert. Es zeigt:
- Figur 1
- das Schema eines Drehantriebes für das Rohr, und
Figur 2- das zugehörige Regelungsschema.
- Figure 1
- the diagram of a rotary drive for the pipe, and
- Figure 2
- the associated regulation scheme.
In Figur 1 ist mit 1 ein Hydromotor bezeichnet, der über das Stirnradgetriebe 2, 3, 4
eine das Rohr 5 umgreifende Hülse 6 drehantreibt, die ihrerseits mit dem Spannfutter
7 verbunden ist. Das Spannfutter 7 ist mit Klemmbacken 8 ausgerüstet, die an die
Oberfläche des Rohres 5 anlegbar sind und dieses so festklemmen, daß bei
Betätigung des Hydromotors 1 das über das Getriebe 2 bis 4 eingeleitete Drehmoment
auf das Rohr 5 übertragen wird.In FIG. 1, 1 denotes a hydraulic motor, which is connected to the
In Figur 2 ist das zugehörige erfindungsgemäße Regelungsschema dargestellt.
Der Kurbelwinkel ϕist wird an der Kurbelwelle gemessen. Ein Startwert ϕstart wird extern
fest vorgegeben. Wenn der Kurbelwinkel ϕist größer als der Startwert ϕstart ist, wird ein
Proportionalventil für die Zeit T geöffnet. Infolgedessen wird über den Hydraulikantrieb
1 das Spannfutter 7 mit der Drehgeschwindigkeit ρ bewegt, woraus sich während des
Zeitintervalls T der Drehwinkel ρist ergibt. Proportional zur Differenz von dem
gewünschten Drehwinkel ρsoll und dem tatsächlichen Drehwinkel ρist wird ein
Korrekturwert ΔT für das Zeitintervall ΔT berechnet, in dem das Ventil geöffnet bleibt.The associated control scheme according to the invention is shown in FIG. The crank angle ϕ is measured on the crankshaft. A start value ϕ start is predefined externally. If the crank angle ϕ is greater than the start value ϕ start , a proportional valve is opened for the time T. As a result, the
In der Situation
Claims (2)
dadurch gekennzeichnet,
dass die Druckmittelzufuhr jedes Hydromotors über ein Proportionalventil geregelt wird, das abhängig von dem geforderten Weg des von diesem Hydromotor bewegten Antriebsorgans für ein diesem Weg proportionales Zeitintervall geöffnet wird.Process for regulating a hydraulic rotary and feed drive for a cold pilger rolling mill for the production of pipes in a rolling stand that can be moved back and forth by a crank drive, the tapered rolls of which roll with changing rotation over the rolling stock and the pipe temporarily depending on the position of the crankshaft release for advancing and turning, the turning and advancing of the tube being carried out by means of pressure medium-controlled hydraulic motors assigned to the drive elements acting thereon,
characterized,
that the pressure medium supply of each hydraulic motor is regulated via a proportional valve which is opened for a time interval proportional to the required path of the drive element moved by this hydraulic motor.
dadurch gekennzeichnet,
dass die von jedem Antriebsorgan oder Hydromotor ausgeführte Bewegung gemessen und mit einem gespeicherten Sollwert verglichen wird, und dass anhand festgestellter Abweichungen die Zeitintervalle für die Ventilöffnung korrigiert werden.Method for controlling a hydraulic rotary and feed drive according to claim 1,
characterized,
that the movement carried out by each drive element or hydraulic motor is measured and compared with a stored target value, and that the time intervals for the valve opening are corrected on the basis of detected deviations.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19860710 | 1998-12-23 | ||
| DE19860710A DE19860710A1 (en) | 1998-12-23 | 1998-12-23 | Process for controlling a hydraulic rotary and feed drive for a cold pilger rolling mill |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1013353A2 true EP1013353A2 (en) | 2000-06-28 |
| EP1013353A3 EP1013353A3 (en) | 2003-10-29 |
| EP1013353B1 EP1013353B1 (en) | 2005-02-09 |
Family
ID=7893117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99250435A Expired - Lifetime EP1013353B1 (en) | 1998-12-23 | 1999-12-13 | Method for controlling a hydraulic rotating and feeding device for a cold pilger mill |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6257040B1 (en) |
| EP (1) | EP1013353B1 (en) |
| JP (1) | JP2000197906A (en) |
| AT (1) | ATE288795T1 (en) |
| DE (2) | DE19860710A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2448788C1 (en) * | 2010-11-17 | 2012-04-27 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Roll mill for rolling tubes with outer lengthwise ribs |
| CN104853857A (en) * | 2012-12-17 | 2015-08-19 | 山特维克原料技术德国公开股份有限公司 | Pilger rolling mill with a crank drive |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8161786B2 (en) * | 2008-04-15 | 2012-04-24 | Glen Stapleton | Apparatus for feeding and turning tube products into a pilger mill machine |
| EP2258491A1 (en) | 2009-06-04 | 2010-12-08 | Siemens Aktiengesellschaft | Rotation tool for a mill train and method for operating a casting-roller compound assembly |
| DE102011110939A1 (en) * | 2011-08-17 | 2013-02-21 | Sms Meer Gmbh | Method and device for producing cold pilgered pipes |
| CN107199263A (en) * | 2017-04-27 | 2017-09-26 | 农思宇 | Thin-wall steel tube bending machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1939914A1 (en) * | 1969-08-01 | 1971-03-25 | Mannesmann Meer Ag | Control unit in cold pilger step rolling mill |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4037444A (en) * | 1977-01-10 | 1977-07-26 | Wean United, Inc. | Shell feed system for a cold pilger mill |
| US4562713A (en) * | 1983-12-14 | 1986-01-07 | Sumitomo Metal Industries, Ltd. | Cold pilger mill |
| DE4234394C1 (en) * | 1992-10-07 | 1993-11-04 | Mannesmann Ag | FEED TRANSMISSION FOR A COLD PILGRIMAGE ROLLER |
| US5921128A (en) * | 1996-12-17 | 1999-07-13 | Mannesmann Aktiengesellschaft | Method and apparatus for cold rolling tubes |
-
1998
- 1998-12-23 DE DE19860710A patent/DE19860710A1/en not_active Withdrawn
-
1999
- 1999-12-13 DE DE59911594T patent/DE59911594D1/en not_active Expired - Lifetime
- 1999-12-13 EP EP99250435A patent/EP1013353B1/en not_active Expired - Lifetime
- 1999-12-13 AT AT99250435T patent/ATE288795T1/en not_active IP Right Cessation
- 1999-12-22 JP JP11363651A patent/JP2000197906A/en active Pending
- 1999-12-23 US US09/471,870 patent/US6257040B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1939914A1 (en) * | 1969-08-01 | 1971-03-25 | Mannesmann Meer Ag | Control unit in cold pilger step rolling mill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2448788C1 (en) * | 2010-11-17 | 2012-04-27 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Roll mill for rolling tubes with outer lengthwise ribs |
| CN104853857A (en) * | 2012-12-17 | 2015-08-19 | 山特维克原料技术德国公开股份有限公司 | Pilger rolling mill with a crank drive |
Also Published As
| Publication number | Publication date |
|---|---|
| US6257040B1 (en) | 2001-07-10 |
| DE59911594D1 (en) | 2005-03-17 |
| EP1013353A3 (en) | 2003-10-29 |
| EP1013353B1 (en) | 2005-02-09 |
| DE19860710A1 (en) | 2000-06-29 |
| ATE288795T1 (en) | 2005-02-15 |
| JP2000197906A (en) | 2000-07-18 |
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