AT404682B - DEVICE FOR MEASURING THE STRIP IN MEASURING ROLLING MILLS - Google Patents
DEVICE FOR MEASURING THE STRIP IN MEASURING ROLLING MILLS Download PDFInfo
- Publication number
- AT404682B AT404682B AT0080194A AT80194A AT404682B AT 404682 B AT404682 B AT 404682B AT 0080194 A AT0080194 A AT 0080194A AT 80194 A AT80194 A AT 80194A AT 404682 B AT404682 B AT 404682B
- Authority
- AT
- Austria
- Prior art keywords
- piston
- hydraulic
- strip
- measuring
- sides
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 title claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/106—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means for measuring a reaction force applied on a cantilever beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/08—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using fluid means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/107—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means for measuring a reaction force applied on an element disposed between two supports, e.g. on a plurality of rollers or gliders
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
- G05D15/01—Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
AT 404 682 BAT 404 682 B
Die Erfindung betrifft eine Vorrichtung zum meßtechnischen Erfassen des Bandzuges bei Bandwalzstraßen mit einer an dem Band anliegenden Meßrolle, mit einer hydraulischen Kolben-Zylinder-Anordnung zur Auslenkung der Meßrolle gegen das Band um einen vorgegebenen Betrag und mit einer Meßeinrichtung zur Erfassung der von dem Band auf die Meßrolle ausgeiibten Kraft, s Bei einer derartigen, aus der DE-A-40 31 666 bekannten Vorrichtung wird der Abschnitt eines Bandes zwischen zwei Bandwalzgerüsten mittels einer Meßrolle gegenüber einem geradlinigen Bandverlauf ausgelenkt, wobei eine hydraulische Kolben-Zylinder-Anordnung die Anstellung der Meßrolle bewirkt. Im Bereich der Meßrolle oder der Kolben-Zylinder-Anordnung ist ein Kraftmeßglied, beispielsweise Dehnungsmeßstreifen, angeordnet, mit dem die von dem Band auf die Meßrolle ausgeübte und vom Bandzug abhängige Kraft io gemessen wird.The invention relates to a device for measuring the strip tension in strip rolling mills with a measuring roller resting on the strip, with a hydraulic piston-cylinder arrangement for deflecting the measuring roller against the strip by a predetermined amount and with a measuring device for detecting the strip the measuring roller exerted force, s In such a device, known from DE-A-40 31 666, the section of a strip between two strip rolling stands is deflected by means of a measuring roller with respect to a straight strip path, a hydraulic piston-cylinder arrangement being used to adjust the measuring roller causes. In the area of the measuring roller or the piston-cylinder arrangement, a force measuring element, for example strain gauges, is arranged, by means of which the force io exerted by the belt on the measuring roller and dependent on the belt tension is measured.
Aus der US-A-4 674 310 ist eine Einrichtung bekannt, bei der der Bandzug aus dem mit nur einem Druckaufnehmer erfaßten Hydraulikdruck und der mit einem Positonsaufnehmer erfaßten Kolbenposition berechnet wird. Gleichzeitig wird entweder in Abhängigkeit von dem ermittelten Bandzug oder der aus der Kolbenposition der errechneten Position einer Meßrolle der Hydraulikdruck im Sinne der Einhaltung eines 15 vorgegebenen Bandzuges oder einer vorgegebenen Meßrollenposition geregelt. Hierbei ist nachteilig, daß bei der Regelung die Massen sowohl der Meßrolle als auch des Bandes über eine Kolben-Zylinder-Anordnung bewegt werden, wodurch die meßtechnische Bestimmung des Bandzuges verfälscht wird.From US-A-4 674 310 a device is known in which the strip tension is calculated from the hydraulic pressure measured with only one pressure sensor and the piston position measured with a position sensor. At the same time, depending on the determined strip tension or the position of a measuring roller calculated from the piston position, the hydraulic pressure is regulated in the sense of maintaining a predetermined strip tension or a predetermined measuring roller position. The disadvantage here is that the masses of both the measuring roller and the belt are moved via a piston-cylinder arrangement in the control, whereby the measurement of the tape tension is falsified.
Aus der US-A-3 961 510 ist eine Einrichtung bekannt, bei der eine Meßrolle mittels eines Aktors gegen ein Band ausgelenkt wird. Der Aktor ist in Abhängigkeit von einem hydraulischen Differenzdruck verstellbar, 20 wozu der Aktor auf einer Seite an eine durch einen Druckspeicher gespeiste Hochdruckleitung und auf seiner anderen Seite an einer Niederdruckleitung angeschlossen ist. Zwischen beiden Leitungen liegt ein Servoventil zur Einstellung des Differenzdrucks für den Aktor. Aus einem gewünschten Bandzug und der mittels eines Potentiometers gemessenen momentanen Stellung der Meßrolle wird der erforderliche Differenzdruck für den Aktor berechnet. Dieser Differenzdruck wird in der Weise eingestellt, daß von dem 25 mittels eines Druckaufnehmers gemessenen Wert für den konstanten Versorgungsdruck der Wert des Differenzdrucks sowie der Wert des mittels eines weiteren Druckaufnehmers auf der Niederdruckseite des Aktors gemessenen Drucks subtrahiert werden und daß der so erhaltene verbleibende Druckwert als Fehlersignal zur Steuerung des Servoventils herangezogen wird. Die von den Druckaufnehmern gemessenen Drücke werden also nicht zur Messung des Bandzuges, sondern zur Einstellung eines vorgegebenen 30 Bandzugs im Rahmen einer Regelung der Auslenkung der Meßrolle herangezogen, wobei auch hier durch die bewegten Massen des Bandes und der Meßrolle Meß- bzw. Einstellfehler auftreten können.A device is known from US Pat. No. 3,961,510 in which a measuring roller is deflected against a belt by means of an actuator. The actuator can be adjusted as a function of a hydraulic differential pressure, 20 for which purpose the actuator is connected on one side to a high-pressure line fed by a pressure accumulator and on the other side to a low-pressure line. A servo valve for adjusting the differential pressure for the actuator is located between the two lines. The required differential pressure for the actuator is calculated from a desired strip tension and the instantaneous position of the measuring roller measured by means of a potentiometer. This differential pressure is set in such a way that the value of the differential pressure and the value of the pressure measured by means of a further pressure sensor on the low-pressure side of the actuator are subtracted from the value for the constant supply pressure measured by means of a pressure sensor, and that the remaining pressure value thus obtained is subtracted as Error signal is used to control the servo valve. The pressures measured by the pressure transducers are therefore not used to measure the strip tension, but rather to set a predetermined strip tension as part of a regulation of the deflection of the measuring roller, whereby measuring or setting errors can also occur here due to the moving masses of the strip and the measuring roller .
Aus der DE-A-1 402 710 ist ein Schlingenheber bekannt, der außer zur Einstellung eines vorgegebenen Bandzuges auch als Bandzugmeßeinrichtung betrieben werden kann. Dazu werden die Hydraulikvolumina beiderseits des zur Auslenkung einer Meßrolle dienenden Kolbens einer Kolben-Zylinder-Anordnung abge-35 sperrt. Auf lediglich einer Seite des Kolbens wird dann der Druck mittels eines Meßgerätes gemessen. Der Schiingenheber ist bezüglich seiner geometrischen Abmessung auf eine sehr spezielle Art ausgebildet, so daß der einstellbare Bandzug bzw. der gemessene Bandzug unabhängig von der Lage der Meßrolle sind. Eine Positionsregeleinrichtung, die eine Auslenkung um einen vorgegebenen Betrag gegen das Band ermöglicht, ist dagegen nicht vorgesehen. 40 Der Erfindung liegt die Aufgabe zugrunde, die Bandzugerfassung zu vereinfachen und Meßfehler zu vermeiden, die von der Anordnung und der Art der jeweils verwendeten Kraftmeßglieder abhängig sind.A loop lifter is known from DE-A-1 402 710, which can also be operated as a tape tension measuring device in addition to setting a predetermined tape tension. For this purpose, the hydraulic volumes are shut off on both sides of the piston of a piston-cylinder arrangement which serves to deflect a measuring roller. The pressure is then measured on only one side of the piston using a measuring device. The loop lifter is designed in a very special way with regard to its geometric dimensions, so that the adjustable tape tension or the measured tape tension are independent of the position of the measuring roller. On the other hand, a position control device that enables a deflection against the belt by a predetermined amount is not provided. 40 The invention has for its object to simplify the tape tension detection and to avoid measurement errors that are dependent on the arrangement and type of force transducers used.
Gemäß der Erfindung wird die Aufgabe dadurch gelöst, daß bei der Vorrichtung der eingangs angegebenen Art die Meßeinrichtung Druckaufnehmer zur Erfassung der hydraulischen Drücke beiderseits des Kolbens in der Kolben-Zylinder-Anordnung aufweist und daß den Druckaufnehmem eine Recheneinrich-45 tung zur Bestimmung des Bandzuges aus den gemessenen Drücken nachgeordnet ist, daß die Kolben-Zylinder-Anordnung beiderseits des Kolbens über Hydraulikleitungen ein einer hydraulischen Positionsregeleinrichtung angeschiossen sind und daß im Verlauf der Hydraulikleitungen steuerbare Mittel zum Absperren der Hydraulikvolumina beiderseits des Kolbens während der Bandzugmessung angeordnet sind. Durch die Messung der Drücke beiderseits des Kolbens entfällt in vorteilhafter Weise das Erfordernis eigens zur so Kraftmessung vorgesehener Kraftmeßglieder, so daß auch Meßfehler, die von der Art der verwendeten Meßglieder, z. B. Dehnungsmeßstreifen, und ihrer Anordnung abhängig sind, erst gar nicht auftreten. Mittels der hydraulischen Positionsregeleinrichtung werden die Rolle und das über sie laufende Band um einen vorgegebenen Betrag ausgelenkt; ist der vorgegebene Auslenkungsbetrag erreicht, so wird bei abgesperrtem Hydraulikvolumen über die Zeitdauer des Bandwalzens die hydraulische Druckdifferenz beiderseits des 55 Kolbens gemessen.According to the invention the object is achieved in that, in the device of the type mentioned, the measuring device has pressure transducers for detecting the hydraulic pressures on both sides of the piston in the piston-cylinder arrangement and that the pressure transducers are equipped with a computing device for determining the tape tension after the measured pressures is that the piston-cylinder arrangement on both sides of the piston is connected to a hydraulic position control device via hydraulic lines and that controllable means for shutting off the hydraulic volumes are arranged on both sides of the piston during the tension measurement during the course of the hydraulic lines. By measuring the pressures on both sides of the piston, there is advantageously no need for force measuring elements specifically provided for force measurement, so that measuring errors which depend on the type of measuring elements used, e.g. B. strain gauges, and their arrangement are dependent, do not occur at all. The roll and the belt running over it are deflected by a predetermined amount by means of the hydraulic position control device; If the predetermined amount of deflection has been reached, the hydraulic pressure difference is measured on both sides of the 55 piston over the period of the strip rolling when the hydraulic volume is shut off.
Der Einsatz der erfindungsgemäßen Vorrichtung erfolgt vorzugsweise in Kombination mit einer Minimalzugregelung. Bei Minimalzugregelungen, wie sie beispielsweise aus der EP-A-0 439 663 bekannt sind, erfolgt die Berechnung des Bandzuges aus walzprozeßspezifischen Meßgrößen, wie z. B. Walzmoment, 2The device according to the invention is preferably used in combination with a minimum tension control. With minimum tension controls, such as are known for example from EP-A-0 439 663, the strip tension is calculated from measurement parameters specific to the rolling process, such as, for. B. rolling moment, 2
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4321230A DE4321230A1 (en) | 1993-06-25 | 1993-06-25 | Device for the metrological registration of the strip tension in strip rolling mills |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA80194A ATA80194A (en) | 1998-06-15 |
| AT404682B true AT404682B (en) | 1999-01-25 |
Family
ID=6491265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0080194A AT404682B (en) | 1993-06-25 | 1994-04-18 | DEVICE FOR MEASURING THE STRIP IN MEASURING ROLLING MILLS |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT404682B (en) |
| DE (1) | DE4321230A1 (en) |
| RU (1) | RU2127162C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869460A (en) * | 2010-04-30 | 2013-01-09 | 西门子Vai金属科技有限责任公司 | Minimization of the strip tension of the rolled piece between two rolling units |
| CN103624177A (en) * | 2012-08-21 | 2014-03-12 | 日高精机株式会社 | Manufacturing apparatus for flattened tube fins |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2343043C2 (en) * | 2006-07-11 | 2009-01-10 | Государственное образовательное учреждение высшего профессионального образования Московский государственный вечерний металлургический институт | Technique and facility for rolling of compacted sintered powder materials |
| CN104520040B (en) | 2012-08-17 | 2016-11-02 | 伊利诺斯工具制品有限公司 | Sample preparation saw |
| CN103722026B (en) * | 2013-12-24 | 2017-05-17 | 河南万达铝业有限公司 | Tension test method for tension rollers |
| CN112576575B (en) * | 2020-12-16 | 2022-04-19 | 太原理工大学 | Hydraulic pressing system of four-upright-column twenty-high rolling mill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1402710A1 (en) * | 1960-07-06 | 1969-03-13 | United Eng Foundry Co | Loop lifter |
| US3961510A (en) * | 1975-07-11 | 1976-06-08 | Wean United, Inc. | Tension device for a rolling mill and the like |
| US4674310A (en) * | 1986-01-14 | 1987-06-23 | Wean United Rolling Mills, Inc. | Strip tension profile apparatus and associated method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1025169B (en) * | 1953-12-15 | 1958-02-27 | Hans Brucker Dipl Ing | Arrangement for measuring, controlling or regulating the train on machines with passing material at uneven running speed |
| US3283629A (en) * | 1964-12-14 | 1966-11-08 | William F Huck | Web processing machines with coordinated web register and tension controls |
| DE2114835C3 (en) * | 1971-03-26 | 1975-10-09 | Wilhelm Mende & Co, 3371 Teichhuette | Device for tensioning a wide band |
| US3890834A (en) * | 1972-09-11 | 1975-06-24 | Asea Ab | Force or tension measuring means |
| SU814502A1 (en) * | 1979-04-16 | 1981-03-25 | Предприятие П/Я А-7697 | Method of measuring strip tension on wide-band hot-rolling mill run-out table |
| DE2944723A1 (en) * | 1979-11-06 | 1981-05-14 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH, 4000 Düsseldorf | DEVICE FOR MEASURING THE VOLTAGE DISTRIBUTION OVER THE WIDTH OF BENDING TAPES |
| US4428244A (en) * | 1981-11-20 | 1984-01-31 | Sumitomo Light Metal Industries, Ltd. | Apparatus for measuring internal stress of strip during rolling process |
| US4463586A (en) * | 1983-04-13 | 1984-08-07 | Reycan Research Limited | Auto wrap angle/positioner for shape sensing roll |
| JPH0798604B2 (en) * | 1988-06-21 | 1995-10-25 | 株式会社東京機械製作所 | Tension detection device and tension control device |
| DE3836371C2 (en) * | 1988-10-26 | 1998-02-19 | Schloemann Siemag Ag | Hydraulic drive device for loop lifters |
| DE4031666C2 (en) * | 1989-10-05 | 1994-03-10 | Masch Und Werkzeugbau Gmbh | Loop lifter as an actuator for regulating the tape tension |
| DE4135614C2 (en) * | 1991-10-29 | 2001-12-06 | Betr Forsch Inst Angew Forsch | Device for measuring the tension distribution across the width of flexible strips, in particular steel strips during cold rolling |
-
1993
- 1993-06-25 DE DE4321230A patent/DE4321230A1/en not_active Withdrawn
-
1994
- 1994-04-18 AT AT0080194A patent/AT404682B/en not_active IP Right Cessation
- 1994-06-24 RU RU94022472/28A patent/RU2127162C1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1402710A1 (en) * | 1960-07-06 | 1969-03-13 | United Eng Foundry Co | Loop lifter |
| US3961510A (en) * | 1975-07-11 | 1976-06-08 | Wean United, Inc. | Tension device for a rolling mill and the like |
| US4674310A (en) * | 1986-01-14 | 1987-06-23 | Wean United Rolling Mills, Inc. | Strip tension profile apparatus and associated method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869460A (en) * | 2010-04-30 | 2013-01-09 | 西门子Vai金属科技有限责任公司 | Minimization of the strip tension of the rolled piece between two rolling units |
| US9694403B2 (en) | 2010-04-30 | 2017-07-04 | Primetals Technologies Austria GmbH | Reduction of the strip tension of rolling stock between two rolling units to a minimum |
| CN103624177A (en) * | 2012-08-21 | 2014-03-12 | 日高精机株式会社 | Manufacturing apparatus for flattened tube fins |
| CN103624177B (en) * | 2012-08-21 | 2015-09-09 | 日高精机株式会社 | For the manufacturing installation of flat tube fin |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA80194A (en) | 1998-06-15 |
| RU94022472A (en) | 1996-06-20 |
| RU2127162C1 (en) | 1999-03-10 |
| DE4321230A1 (en) | 1995-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee |