EP2207634A1 - Détecteur de position destiné à la mesure de la course d'un système à piston et cylindre - Google Patents
Détecteur de position destiné à la mesure de la course d'un système à piston et cylindreInfo
- Publication number
- EP2207634A1 EP2207634A1 EP08802727A EP08802727A EP2207634A1 EP 2207634 A1 EP2207634 A1 EP 2207634A1 EP 08802727 A EP08802727 A EP 08802727A EP 08802727 A EP08802727 A EP 08802727A EP 2207634 A1 EP2207634 A1 EP 2207634A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leaf spring
- spring element
- position sensor
- displacement
- intermediate carrier
- 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- Withdrawn
Links
Classifications
-
- 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
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/02—Roll gap, screw-down position, draft position
-
- 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
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
Definitions
- the invention relates to a position sensor for Anstellhubweglessness of the bearing chocks of the rollers of a rolling mill acted upon hydraulic piston-cylinder system, wherein the position sensor is designed to measure a relative displacement of two components of the piston-cylinder system in the direction of displacement and wherein the position sensor with a coupling element equipped with the influence of, for example, by roll deflections during rolling operation caused tilting movements can be eliminated on the position sensor.
- a position sensor of this type is known from EP 1 001 247 A2. It is used in a rolling stand of a rolling mill, with which, for example, a strip is rolled, which should have a certain thickness. So that the roll gap has exactly the desired dimension, its size is monitored with a measuring system. The position sensor therefore has a high resolution, with which a precise measurement of the roll gap can take place.
- tilting movements of the hydraulic cylinder, z. B. caused by the roll bends during the rolling operation, very disturbing and affect the measurement result. Therefore, the prior art solution has a flexure bar of certain length with an elastic region arranged so that said tilting movements only result in lateral bending of the flexure bar, but do not affect the effective nip measurement. This can be counteracted a falsification of the measurement results.
- the various solutions take into account the different installation situations, the lifting capacity and the required measuring accuracy.
- the position measuring systems are arranged on the inside or outside of the cylinder of the piston-cylinder unit.
- the compensation of the tilting movement takes place by means of a spring-loaded pressure ram, which makes it possible to compensate for said tilting movements (that is to say the tumble) of the cylinder.
- the present invention is therefore the object of a position sensor of the type mentioned in such a way that the disadvantages mentioned are avoided.
- the position transmitter is to enable a play and wear-free connection of the measuring system in the positive coupling on, while still a small height to be achieved.
- the height compared to the previously known solution with balance bar should be significantly reduced, without giving up the advantages of this solution.
- the coupling element of the position sensor has at least a first leaf spring element which extends in the direction of displacement, wherein the one end of the first leaf spring element is connected to a first connector and wherein the other end of the first Leaf spring element is connected to an intermediate carrier; Further, the coupling element has at least one second leaf spring element which extends in the displacement direction, wherein the one end of the second leaf spring element is connected to the intermediate carrier and wherein the other end of the second leaf spring element is connected to a second connector. Furthermore, the invention provides that the planes of the at least one first and at least one second leaf spring element are arranged rotated relative to one another about the axis of the displacement direction by an angle.
- the angle between the two planes of the two leaf spring elements is preferably between 60 ° and 120 °, more preferably 90 °.
- the intermediate carrier can, viewed in the direction of displacement, be arranged close to or in the region of the second connecting piece.
- the first leaf spring element preferably extends largely linearly and / or is C-shaped.
- the second leaf spring element is preferably U-shaped, wherein the ends of the legs of the U-shaped structure are arranged on the intermediate carrier and on the second connecting piece.
- a preferred alternative embodiment provides that the second leaf spring element is formed double-U-shaped, wherein the ends of the legs of the double-U-shaped structure are arranged on the intermediate carrier and on the second connecting piece.
- the intermediate carrier is preferably designed as an annular component.
- the assembly of the coupling element is preferably carried out in the direction of the main axis of the piston-cylinder system.
- the compact design allows a lower height of the system and a small diameter.
- a compact height of the position sensor can be achieved, and that in formschl ⁇ ssiger coupling of the position sensor (positive connection of the path measuring unit to the moving cylinder to its path determination), ie a non-positive coupling with the disadvantages mentioned above can be dispensed with.
- FIG. 1 is a schematic side view of a part of a piston-cylinder system with which a roller of a roll stand in the radial direction of the roller can be adjusted, wherein a position sensor for the position of the roller is present, and
- FIG. 2 is a perspective view of a coupling element of the position encoder according to FIG. 1.
- a piston-cylinder system 3, 4 which has a cylinder 3 in which a piston 4 is guided.
- the piston 4 can be moved in a direction of displacement a to make the roller 2 accordingly.
- a position sensor 1 is present, with which the corresponding measurement can be made.
- the position sensor 1 is arranged between the cylinder 3 and - via a connecting arm 16 - the piston 4 effectively, so that the relative position of the piston 4 to the cylinder 3 in the direction of displacement a with a Wegaufneh- 15 can be measured.
- the displacement sensor 15 is connected via a coupling element 5 to the cylinder 3.
- the coupling element should transmit the movement in the direction of displacement a genuine, but compensate for tilting or tumbling movements of the roller 2 and thus of the piston 4.
- FIG. 1 How this is to take place according to a preferred embodiment of the invention is illustrated in FIG.
- the coupling element 5 has two leaf spring elements 6 and 11, namely a first leaf spring element 6 and a second leaf spring element 11. Both leaf spring elements 6, 11 are made of thin spring steel. The width B of the leaf spring elements 6, 11 is significantly greater than the thickness D thereof.
- the coupling element 5 furthermore has a lower, first connecting piece 8 and a second upper connecting piece 14.
- the connecting pieces 8 and 14 are, as can be seen in FIG. 1, connected to the displacement transducer 15 and to the cylinder 3.
- the coupling element 5 has an intermediate carrier 10, which is designed as a relatively solid ring.
- the first leaf spring element 6 is connected at one end 7 fixedly connected to the first connector 8. With its other end 9, the first leaf spring element 6 is fixedly connected to the intermediate carrier 10.
- the second leaf spring element 11 is fixedly connected at one end 12 to the intermediate carrier 10 and at its other end 13 to the second connecting piece 14.
- the two leaf spring elements 6, 11 are flat and flat due to the thickness and width relationships, so that respective planes are defined in which they extend. It is envisaged that the levels of the first and of the second leaf spring element 6, 11 are arranged relative to each other about the axis of the displacement direction a rotated by an angle ⁇ .
- each movement of the connecting piece 8 can be transmitted directly and directly to the connecting piece 14, which results in a high measuring accuracy.
- the first leaf spring element 6 extends largely straight between the connecting piece 8 and the intermediate carrier 10, but it is slightly C-shaped (see Fig. 2).
- the second leaf spring element 11 is designed as a double "U” (see Fig. 2).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
Abstract
L'invention concerne un détecteur de position (1) qui permet de mesurer la course d'un système hydraulique à piston et cylindre (3, 4) qui agit sur les pièces de montage des paliers du cylindre (2) d'une cage de laminoir, le détecteur de position (1) étant configuré pour mesurer le déplacement relatif des deux composants (3, 4) du système à piston et cylindre (3, 4) dans leur direction de déplacement (a), le détecteur de position (1) étant doté d'un élément d'accouplement (5). Pour obtenir une structure simple et compacte de l'élément d'accouplement tout en garantissant une haute précision de la mesure, l'invention propose que l'élément d'accouplement (5) présente un premier élément (6) de ressort à lame qui s'étend dans la direction de déplacement (a), une extrémité (7) du premier élément (6) de ressort à lame étant reliée à une première pièce de raccordement (8) et l'autre extrémité (9) du premier élément (6) de ressort à lame étant reliée à un support intermédiaire (10), et que l'élément d'accouplement (5) présente un deuxième élément (11) de ressort à lame qui s'étend dans la direction de déplacement (a), une extrémité (12) du deuxième élément (11) de ressort à lame étant reliée au support intermédiaire (10) et l'autre extrémité (13) du deuxième élément (11) de ressort à lame étant reliée à une deuxième pièce de raccordement (14), les plans du premier et du deuxième élément (6, 11) de ressort à lame étant inclinés l'un par rapport à l'autre d'un angle (a) autour de l'axe de la direction de déplacement (a).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048686A DE102007048686A1 (de) | 2007-10-10 | 2007-10-10 | Positionsgeber zur Anstellhubwegmessung eines Kolben-Zylinder-Systems |
PCT/EP2008/008307 WO2009049770A1 (fr) | 2007-10-10 | 2008-10-01 | Détecteur de position destiné à la mesure de la course d'un système à piston et cylindre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2207634A1 true EP2207634A1 (fr) | 2010-07-21 |
Family
ID=39967848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08802727A Withdrawn EP2207634A1 (fr) | 2007-10-10 | 2008-10-01 | Détecteur de position destiné à la mesure de la course d'un système à piston et cylindre |
Country Status (9)
Country | Link |
---|---|
US (1) | US20100281969A1 (fr) |
EP (1) | EP2207634A1 (fr) |
JP (1) | JP2010540257A (fr) |
KR (1) | KR20100038121A (fr) |
CN (1) | CN101821030A (fr) |
DE (1) | DE102007048686A1 (fr) |
RU (1) | RU2433007C1 (fr) |
UA (1) | UA95722C2 (fr) |
WO (1) | WO2009049770A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101468766B1 (ko) * | 2008-03-10 | 2014-12-12 | 티모시 웹스터 | 광학 영상 센서를 사용하는 유압 실린더 내 피스톤 위치 감지 장치 및 그 방법 |
US8829893B2 (en) | 2011-09-09 | 2014-09-09 | Honeywell International Inc. | Linear position sensor |
US9764368B2 (en) | 2011-09-23 | 2017-09-19 | Sms Group Gmbh | Rolling mill and rolling method |
CN104246427B (zh) * | 2013-04-12 | 2016-12-21 | 株式会社小松制作所 | 液压工作缸的行程初期校正作业辅助装置以及方法 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906767A (en) * | 1974-05-31 | 1975-09-23 | Mitsubishi Heavy Ind Ltd | Hydraulic roll-gap control system |
JPS54129573A (en) * | 1978-03-31 | 1979-10-08 | Amada Co Ltd | Stroke controller in bending machine |
JPS55158814A (en) * | 1979-05-30 | 1980-12-10 | Hitachi Ltd | Rolling mill |
US4378685A (en) * | 1981-01-26 | 1983-04-05 | Nippon Steel Corporation | Method of setting axial position of loosely carried sleeve in a rolling mill |
JPS58167009A (ja) * | 1982-03-29 | 1983-10-03 | Hitachi Ltd | 油圧々下装置 |
US4693171A (en) * | 1982-12-14 | 1987-09-15 | Otis Engineering Corporation | Position responsive valve control for hydraulic cylinder |
US4696221A (en) * | 1982-12-14 | 1987-09-29 | Otis Engineering Corporation | Dual valve control for double action hydraulic cylinder |
DE3420501A1 (de) | 1984-06-01 | 1985-12-05 | Mannesmann AG, 4000 Düsseldorf | Walzenanstellanzeige |
US4571994A (en) * | 1984-08-06 | 1986-02-25 | The United States Of America As Represented By The Secretary Of The Navy | Acoustical testing of hydraulic actuators |
FR2570003B1 (fr) | 1984-09-12 | 1987-01-09 | Clecim Sa | Dispositif de serrage hydraulique d'une cage de laminoir monte dans le bati de la cage en remplacement d'un dispositif de serrage a vis et ecrou |
JPS61199506A (ja) * | 1985-02-28 | 1986-09-04 | Ishikawajima Harima Heavy Ind Co Ltd | 圧延機 |
DE3515436A1 (de) | 1985-04-29 | 1986-10-30 | Achenbach Buschhütten GmbH, 5910 Kreuztal | Messeinrichtung zur ermittlung der kolbenposition einer hydraulischen kolben-zylindereinheit fuer die anstellung der walzen in einem walzwerk |
JPH0637375B2 (ja) * | 1986-08-26 | 1994-05-18 | 甲竜工業株式会社 | 水中生物防汚剤 |
FR2645051A1 (fr) | 1989-03-28 | 1990-10-05 | Clecim Sa | Dispositif de reperage de la position des cylindres d'un laminoir |
JPH04228214A (ja) * | 1990-12-27 | 1992-08-18 | Sumitomo Metal Ind Ltd | 水平圧延機における板厚制御方法およびその制御装置 |
US5488860A (en) * | 1993-12-29 | 1996-02-06 | E-Systems, Inc. | Apparatus for determining the position of a piston in a fluidic actuator |
DE4434665C2 (de) * | 1994-09-28 | 1999-03-04 | Eckold Ag | Hydraulik-Arbeitszylinder |
IT1281601B1 (it) | 1996-01-09 | 1998-02-20 | Innocenti Eng Spa | Dispositivo di regolazione bilanciata della posizione dei rulli in gabbie a due rulli di lavoro per laminatoi longitudinali |
DE19851480B4 (de) * | 1998-11-09 | 2007-09-13 | Sms Demag Ag | Positionsgeber zur Anstellhubwegmessung der Walzen eines Walzgerüstes |
FR2792229B1 (fr) | 1999-04-16 | 2001-07-13 | Kvaerner Metals Clecim | Laminoir a serrage hydraulique |
DE19938132A1 (de) * | 1999-08-16 | 2001-02-22 | Eckehart Schulze | Elektrohydraulische Überwachungseinrichtung für einen doppelt wirkenden Hydrozylinder |
DE10141180A1 (de) * | 2001-08-22 | 2003-03-06 | Sms Demag Ag | Walzgerüst zum Walzen von unterschiedlichem Walzgut, das unterschiedliche Walzkräfte erfordert |
JP2005169482A (ja) * | 2003-12-15 | 2005-06-30 | Kawasaki Heavy Ind Ltd | 圧延機用圧下装置および圧延機 |
US6941827B2 (en) * | 2003-12-19 | 2005-09-13 | Caterpillar Inc. | Mounting apparatus and method for cylinder position sensor |
WO2010141605A1 (fr) * | 2009-06-03 | 2010-12-09 | Control Products Inc. | Accumulateur hydraulique avec capteur de position |
-
2007
- 2007-10-10 DE DE102007048686A patent/DE102007048686A1/de not_active Withdrawn
-
2008
- 2008-10-01 UA UAA201005356A patent/UA95722C2/ru unknown
- 2008-10-01 US US12/734,110 patent/US20100281969A1/en not_active Abandoned
- 2008-10-01 KR KR1020107004443A patent/KR20100038121A/ko active IP Right Grant
- 2008-10-01 JP JP2010528295A patent/JP2010540257A/ja not_active Ceased
- 2008-10-01 WO PCT/EP2008/008307 patent/WO2009049770A1/fr active Application Filing
- 2008-10-01 CN CN200880111113A patent/CN101821030A/zh active Pending
- 2008-10-01 RU RU2010118463/02A patent/RU2433007C1/ru not_active IP Right Cessation
- 2008-10-01 EP EP08802727A patent/EP2207634A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009049770A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2010540257A (ja) | 2010-12-24 |
WO2009049770A1 (fr) | 2009-04-23 |
US20100281969A1 (en) | 2010-11-11 |
KR20100038121A (ko) | 2010-04-12 |
DE102007048686A1 (de) | 2009-04-16 |
CN101821030A (zh) | 2010-09-01 |
RU2433007C1 (ru) | 2011-11-10 |
UA95722C2 (ru) | 2011-08-25 |
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Legal Events
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DAX | Request for extension of the european patent (deleted) | ||
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Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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Effective date: 20120229 |