EP3936249A1 - Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure - Google Patents

Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure Download PDF

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Publication number
EP3936249A1
EP3936249A1 EP21192579.7A EP21192579A EP3936249A1 EP 3936249 A1 EP3936249 A1 EP 3936249A1 EP 21192579 A EP21192579 A EP 21192579A EP 3936249 A1 EP3936249 A1 EP 3936249A1
Authority
EP
European Patent Office
Prior art keywords
force sensor
sensor
measuring roller
force
recess
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Withdrawn
Application number
EP21192579.7A
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German (de)
English (en)
Inventor
Gert Mücke
Julian KREMEYER
Thorsten Voss
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.)
BFI VDEH Institut fuer Angewandte Forschung GmbH
Original Assignee
BFI VDEH Institut fuer Angewandte Forschung GmbH
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 BFI VDEH Institut fuer Angewandte Forschung GmbH filed Critical BFI VDEH Institut fuer Angewandte Forschung GmbH
Publication of EP3936249A1 publication Critical patent/EP3936249A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • 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

Definitions

  • the invention relates to a measuring roller for determining a property of a strip-shaped product guided over the measuring roller, in particular a metal strip. Furthermore, the invention relates to a method for determining a property of a strip-shaped product guided over the measuring roller, in particular a metal strip. The invention also relates to the use of such a measuring roller.
  • Measuring rollers are used in cold and hot rolling of metal strip and are made, for example, from DE 42 36 657 A1 known.
  • the arrangement of the force sensors at a distance from the surrounding wall and the closing of the annular gap with the help of an O-ring or a sufficiently elastic plastic prevents lateral forces acting in the body of the measuring roller during rolling from having a disruptive effect on the force sensors and the measurement result.
  • Such disruptive forces are the result of the strip tension acting on the measuring roller and the associated deflection of the measuring roller. Its cross-section takes the form of an ellipse, the longer axis of which runs parallel to the strip.
  • the deflection of the measuring roller gives the force sensor the illusion of an unevenness in the strip when it is transmitted to the measuring transducer by a force shunt.
  • Such a force shunt cannot be completely avoided when using a seal in the annular gap, since the sealing forces inevitably act on the force sensor.
  • a measuring roller for determining flatness deviations when treating strip-shaped material, in particular metal strip with a measuring roller body and a casing tube at least partially surrounding the measuring roller body and force sensors arranged in recesses is known, with the recesses extending from one end face of the measuring roller into the measuring roller body and/or extends into the jacket tube.
  • the recess can be closed at the front with a cover.
  • the journals of this measuring roller provided on the face side are formed on the measuring roller body.
  • a disadvantage of this measuring roller is the weakening of the measuring roller body or the jacket tube due to the recesses made. With wide measuring rollers, as with deep hole drilling, running over the bearing journal is a major disadvantage.
  • Another problem is the closing of the channels/grooves incorporated up to the front side, since these are not as in the DE 102 07 501 C1 with drilling tools (round channels) but with milling tools (square channels).
  • the measuring rollers of the prior art determine the flatness of the strip using individual sensors distributed over the circumference of the measuring roller.
  • the measurement results of the individual sensors for determining the flatness are often related to one another during the evaluation.
  • measuring errors always occur when the metal strip vibrates. This is the case, for example, when the measuring roller is arranged near a coiler.
  • the magnitude of the force acting on the individual force sensor no longer depends solely on the strip tension and the flatness of the strip, but is amplified or reduced by the vibration. This leads to measurement errors, especially with evaluation methods that compare the measurement results from individual sensors distributed over the circumference.
  • the invention is based on the problem of increasing the informative value of the tests carried out with such measuring rollers on the properties of the strip-shaped material guided over the measuring roller.
  • DE 102 07 501 C1 teaches at column 3, lines 1 and 2 to space a plurality of force sensors in a recess.
  • the US 2013/0298625 A1 shows in her 2 also several force sensors spaced apart from each other.
  • the DE 10 2014 012 426 A1 teaches in [0021] to arrange several force sensors in a recess and substantiates this teaching in its 2 characterized in that a plurality of force sensors are spaced from each other in the recess.
  • the general teaching can be gathered from the state of the art that when there are several force sensors arranged in a recess, these should be arranged at a clear distance from one another.
  • This may be based on the endeavor to distribute the existing (few) force sensors as widely as possible in the respective recess in order to set up the measurement as broadly as possible over the possible width of the measuring field predetermined by the length of the recess. Furthermore, this far-spaced arrangement of the force sensors within the recess may be based on the idea of avoiding erroneous measurements.
  • a force acting radially on the measuring roller body of a measuring roller by means of a force sensor, which is arranged at a distance from the peripheral surface of the measuring roller body in a recess of the measuring roller body, there is the problem that the radially acting force is transmitted through the material of the measuring roller body through which it penetrates must be scattered in order to reach the sensor surface of the force sensor.
  • This phenomenon is called a stress cone or "Rötscher cone”.
  • This effect means that an arrangement of the force sensors that is clearly spaced apart from one another within a recess is preferred.
  • two force sensors arranged adjacent to one another supply measuring signals in the course of the flatness measurement which are caused by a single radial force acting at a single point on the circumferential surface of the measuring roller body and for some evaluation methods of the prior art should actually only be measured by one of the two sensors.
  • the invention makes it possible to arrange as many force sensors as possible in a row.
  • the number of measuring points on the circumference of the measuring roller can thus be reduced.
  • This concentrated arrangement of the individual sensors on a line reduces the influence of vibrations on the measurement result. All sensors arranged in this way see the strip-shaped product in the same state of vibration, so that relative statements can be made more precisely.
  • the arrangement of the force sensors according to the invention can also offer the advantage of a higher resolution and a more precise depiction of the actual flatness.
  • the measuring roller according to the invention has a measuring roller body.
  • the measuring roller body preferably has a closed peripheral surface.
  • the measuring roller body is a full roller, which extends along a Long axis extends.
  • a full roller is understood to mean a measuring roller body that is in one piece and whose shape was produced either with a primary shaping process, for example casting, and/or whose geometric shape was produced by a cutting process, in particular by machining, in particular by turning, drilling, milling or grinding from a one-piece semi-finished product will be produced.
  • the measuring roller pins arranged on the front side of the measuring roller for the rotatable mounting of the measuring roller are also part of the one-piece body.
  • the main part of the measuring roller body is designed as a cylindrical solid roller, which has covers arranged on the front side, on which the measuring roller pins are designed.
  • the measuring roller body according to the invention can, for example, like that in 3 the DE 20 2014 006 820 U1 executed measuring roller body be formed, in which the measuring roller body is formed with molded pin and over the measuring roller body a jacket tube is pushed.
  • the measuring roller does not have a jacket tube, but is designed as a solid roller.
  • the measuring roller body according to the invention is formed from individual disks arranged next to one another, as is the case, for example, in DE 26 30 410 C2 will be shown.
  • the measuring roller body of the measuring roller according to the invention preferably has a closed peripheral surface.
  • the measuring roller body is designed as a solid roller and all the recesses provided in the measuring roller body are designed in such a way that no recess leads from the recess to the peripheral surface.
  • the recesses are particularly preferably guided axially and have an opening on one end face of the measuring roller body, or transverse channels are provided within the measuring roller body, which lead from the recess radially further into the interior of the measuring roller body, for example to a collecting channel in the center of the measuring roller body.
  • a closed peripheral surface of the measuring roller body can also be achieved in that in embodiments in which the respective recess has a recess leading in the direction of the peripheral surface, this is closed by a closure element.
  • a closure element can be a casing tube that completely surrounds a base body of the measuring roller body, as for example in FIGS 3 and 4 the DE 10 2014 012 426 A1 shown.
  • the closure element can also be in the manner of in DE 197 47 655 A1 be formed cover shown.
  • the measuring roller does not have a jacket tube, but is designed as a solid roller, either one in which no recess leads from the recess to the peripheral surface, or one in which the respective recess has a Direction to the peripheral surface is leading recess, but which is closed by a closure element, such as a cover.
  • a closure element such as a cover.
  • coatings for example the peripheral surface of a solid roller or the peripheral surface of a casing tube, are conceivable, for example to reduce friction or to protect the strip-shaped material to be guided over the measuring roller.
  • At least one recess is provided in the measuring roller body of the measuring roller according to the invention. It has been shown that the advantages of the invention can already be achieved with a single recess in the measuring roller body. It is thus conceivable in the case of the flatness measurement to provide information about the flatness of the strip-shaped material guided over the measuring roller once per revolution of the measuring roller.
  • the measuring roller body has a plurality of recesses.
  • the recesses are designed at the same radial distance from the longitudinal axis of the measuring roller body.
  • all of the recesses are distributed equidistantly from one another in the circumferential direction.
  • a first group of recesses is provided, which are particularly preferably arranged at the same radial distance from the longitudinal axis and distributed equidistantly in the circumferential direction, and in which at least one further recess is provided in addition to this first group of recesses , which is either designed differently with respect to its radial distance from the longitudinal axis than the recesses of the first group and/or does not have the same distance in the circumferential direction to the other recesses as the other recesses have to one another.
  • a measuring roller with regard to the flatness measurement like a measuring roller of the prior art for example like that from FIG DE 102 07 501 known full role or the off DE 10 2014 012 426 A1 known measuring rollers, but then, for the inventive equipment, these measuring rollers of the prior art are provided with a further recess made outside the grid, with which, for example, a different measurement is carried out.
  • the recesses mentioned in this paragraph are preferably those that run in the axial direction of the measuring roller body.
  • the measuring roller has a single recess and all the force sensors of the measuring roller are arranged in a single recess, for example in a single axially running recess.
  • the measuring roller body has a closed peripheral surface and is closed off at each end by an end face.
  • the end faces are arranged at an angle of 90° to the peripheral surface.
  • the measuring roller has bearing journals.
  • the bearing journals are formed on the end faces.
  • the measuring roller body is cylindrical.
  • the measuring roller according to the invention is designed with at least one recess in the measuring roller body, which is arranged at a distance from the peripheral surface, with the recess not opening towards the peripheral surface, or no further recess leading away from the recess, for example no bore leads to the peripheral surface.
  • the recess leads from the peripheral surface into the interior of the measuring roller body, but is closed by a closure element.
  • the measuring roller is designed with a plurality of recesses in the measuring roller body, which are arranged at a distance from the peripheral surfaces, either all recesses are designed in such a way that no recess, e.g.
  • the closure element is a cover or, for example, a jacket tube.
  • a recess in the measuring roller body extends in a direction parallel to the longitudinal axis of the measuring roller body. If, according to a preferred embodiment, several recesses are provided in the measuring roller body, it is preferred that all recesses of the measuring roller body each extend in a direction parallel to the longitudinal axis of the measuring roller body.
  • the respective recess opens out at least at one of its ends, preferably at both of its ends, on an end face of the measuring roller body.
  • a recess ending on an end face of a measuring roller body can be closed by an end cap, with this end cap only closing this recess.
  • Embodiments are also conceivable in which the end face of the measuring roller body is completely closed by a cover, as for example in 1 and 2 , or. 4 the DE 10 2014 012 426 A1 shown.
  • the recess is elongate, "elongate” meaning that the recess is larger in a first direction (in the longitudinal direction of the recess) than in any direction perpendicular to this direction.
  • the extent of the elongate recess in the longitudinal direction is twice, or more preferably more than twice, greater than in any direction perpendicular to that direction.
  • the longitudinal direction of the recess encloses an angle with the longitudinal direction of the measuring roller body that is less than 75°, particularly preferably ⁇ 45°, particularly preferably ⁇ 30°, particularly preferably ⁇ 10°, particularly preferably ⁇ 5°.
  • the longitudinal direction of the recess is not perpendicular to the longitudinal axis of the measuring roller body. If - which would be conceivable in one embodiment - the longitudinal axis of the recess and the longitudinal axis of the measuring roller body do not intersect, the above-mentioned design rule applies to the projection of the longitudinal axis of the recess onto the plane that contains the longitudinal axis of the measuring roller body.
  • the projection of the longitudinal axis of the recess onto a plane that contains the longitudinal axis of the measuring roller body is designed in such a way that the projection of the longitudinal direction of the recess encloses an angle with the longitudinal direction of the measuring roller body that is less than 75°, in particular preferably ⁇ 45°, particularly preferably ⁇ 30°, particularly preferably ⁇ 10°, particularly preferably ⁇ 5°.
  • the longitudinal axis of the recess obviously does not intersect the longitudinal axis of the measuring roller body, nor does a projection of the longitudinal axis onto a plane containing the longitudinal axis of the measuring roller body intersect the longitudinal axis of the measuring roller body does not cut.
  • DE 20 2007 001 066 U1 a measuring roller with elongated recesses is shown, for example.
  • a first force sensor and a second force sensor are arranged in a recess (if the measuring roller has only one recess: in the recess) of the measuring roller.
  • the first force sensor has a sensor surface, with the force sensor being able to generate a sensor signal when the position of the sensor surface of the first force sensor changes.
  • the second force sensor has a sensor surface, with the second force sensor being able to generate a sensor signal when the position of the sensor surface of the second force sensor changes.
  • Force sensors are referred to as force sensors because they are used to measure forces, particularly compressive forces. In order to measure the force acting on them, the force sensors are designed in such a way that they have a sensor surface and can generate a sensor signal when the position of the sensor surface changes.
  • the force sensors usually have an associated reference system and react to changes in the position of the sensor surface in this reference system.
  • Force sensors often have a housing.
  • the reference system is then often the housing.
  • the force sensor can determine, for example, whether the position of the sensor surface has changed relative to the housing. If the force sensor is designed as a piezoelectric force sensor, for example, it has a piezo quartz that can generate an electrical signal when the position of one of its surfaces is changed relative to a reference surface, for example an opposite surface of the piezo quartz, the piezo Quartz, for example, is compressed.
  • a change in the position of the surface of the force sensor changes the length of the measuring wire or the measuring grid formed from measuring wires, mostly stretched, but sometimes also compressed.
  • the optical properties of the force sensor for example the refractive index or reflection properties, are changed by the change in the position of the surface.
  • the force sensors to be used according to the invention have a sensor surface whose change in position is used by the force sensor to determine a force acting on it observed.
  • the sensor surface is a surface of the element whose properties are changed to generate the sensor signal, for example a surface of the piezo-quartz itself.
  • such force sensors often have intermediate pieces on which the sensor surface is formed.
  • such spacers are rigid blocks in which a change in the position of one surface of the rigid block immediately results in a change in the position of the opposite surface due to the rigidity of the block.
  • Such intermediate pieces can be used to design the sensor surface to protrude from other parts of the force sensor, in particular from a housing.
  • a sensor surface that protrudes over other parts of the force sensor increases the measurement accuracy because a clearly defined surface is created on which the environment can act. Protruding sensor surfaces can, for example, prevent measurement errors due to force shunts.
  • the force sensor according to the invention can, for example, like that in DE 1 773 551 A1 be designed as shown force sensor and arranged in a housing, having a piezo element consisting of a multilayer crystal arrangement, which is arranged between two force transmission discs.
  • the sensor surface would be the outer surface of the in 1 the DE 1 773 551 A1 upper power transmission disc or the outer surface of the in 1 the DE 1 773 551 A1 lower power transmission pulley.
  • the sensor surface is flat.
  • the surface normal of the flat sensor surface of the first force sensor points in the direction of the peripheral surface.
  • the surface normal of the sensor surface of the second force sensor is also flat in a preferred embodiment and also points in the direction of the peripheral surface in a preferred embodiment.
  • the surface normal of the sensor surface of the first force sensor is parallel to the surface normal of the sensor surface of the second force sensor.
  • a radial direction of the measuring roller body is a surface normal of the sensor surface of the first and/or the second force sensor.
  • the surface normal of a flat sensor surface at the point on the sensor surface at which the sensor surface is intersected by a radial line of the measuring roller body is at an angle to this radial line of the measuring roller body that is less than 45°, particularly preferably less than 20 °, particularly preferably less than 10°, particularly preferably less than 5°.
  • the sensor surface of a force sensor used in the measuring roller according to the invention is a flat surface.
  • the sensor surface of the first force sensor is symmetrical with respect to the plane that contains the longitudinal axis of the measuring roller body and that intersects the sensor surface of the force sensor and in which a surface normal of the sensor surface also lies.
  • the sensor surface is ring-shaped, in particular in the form of a circular ring. Equally preferred are embodiments in which the sensor surface is circular or elliptical. Rectangular, square or polygonal sensor surfaces are also conceivable. In a preferred embodiment, the sensor surface is flat.
  • the sensor surface is a surface that is emphasized from the other elements of the force sensor and is in contact with a boundary surface of the recess or is in contact with a closure element that closes the recess towards the peripheral surface.
  • At least two force sensors used in the measuring roller according to the invention are of the same type, and are therefore of the same type and in particular of the same series, in particular preferably constructed identically.
  • the first force sensor is arranged in the recess next to the second force sensor.
  • the sensor surface of the first force sensor is arranged closer to an end face of the measuring roller body than the sensor surface of the second force sensor.
  • the first force sensor is arranged offset in the circumferential direction in relation to the second force sensor in the recess. In a preferred embodiment, however, the first force sensor and the second force sensor are not offset from one another in the circumferential direction.
  • the first force sensor and the second force sensor are arranged at the same radial distance from the longitudinal axis of the measuring roller body.
  • the one in which the sensor surface of the first force sensor is directly adjacent to the sensor surface of the second force sensor is particularly preferred.
  • a point lying on the circumference of the circular or annular first sensor surface would adjoin a point lying on the circumference of the circular or annular second sensor surface.
  • the radial forces acting on the circumference of the measuring roller could be measured without gaps.
  • a force shunt could only be prevented if the peripheral surfaces of the sensor surfaces are so smooth that no frictional forces are transmitted. It can therefore be assumed that in the practically relevant implementation, the sensor surfaces will mainly be arranged at a slight distance from one another so that the measurement results of the respective sensor surface are not influenced by loads on an adjacent sensor surface.
  • the design rule claimed according to the invention is based on a radial end boundary line.
  • the measuring roller is regularly used to measure radially acting forces. These forces occur when the strip-shaped material to be examined partially wraps around the measuring roller.
  • the end boundary line defines the point at which a radially acting force is still just above the sensor surface of one force sensor; and be it in the case of a sensor surface designed in the form of a circle or annulus, even just above a point on the circumference of the sensor surface.
  • the angle between these lines is less than 65°, particularly preferably less than 55° and particularly preferably less than or equal to 45°, particularly preferably less than or equal to 40°, particularly preferably less than or equal to 35°, particularly preferably less than or equal to 30° , more preferably less than or equal to 20°, more preferably less than or equal to 10°, more preferably less than or equal to 5°.
  • the line connecting the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor runs parallel to the Longitudinal axis of the measuring roller.
  • the first force sensor and the second force sensor are arranged in an elongated recess and the direction of the longitudinal extent of the recess runs parallel to the longitudinal axis of the measuring roller.
  • the first force sensor is arranged in a first radial recess, preferably a pocket
  • the second force sensor is arranged in a second radial recess, preferably a pocket.
  • the line connecting the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor can also be parallel to the longitudinal axis of the measuring roller.
  • the radial recess of the first force sensor is offset axially (in the direction of the longitudinal axis of the measuring roller) and in the circumferential direction of the measuring roller relative to the radial recess of the second force sensor.
  • the line connecting the point on the sensing face of the first force sensor that is closest to the sensing face of the second force sensor and the point on the sensing face of the second force sensor that is closest to the sensing face of the first force sensor would not be parallel to the Run along the longitudinal axis of the measuring roller.
  • Such an alignment of the line is also given in the case of elongated recesses, the longitudinal extension of which does not run parallel to the longitudinal axis of the measuring roller body, but also has a component pointing in the circumferential direction.
  • the line that connects the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor runs in one Angle to a plane which is perpendicular to the longitudinal axis of the measuring roller, preferably at an angle of >1°, particularly preferably at an angle of >5°, particularly preferably at an angle of >10°, particularly preferably at an angle of >15 °, particularly preferably at an angle of >20°, particularly preferably in at an angle of >25°, particularly preferably at an angle of >30°, particularly preferably at an angle of >45°.
  • the angle is ⁇ 90°.
  • the angle is 90°
  • the line that connects the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor runs with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first closest to the force sensor, parallel to the longitudinal axis of the measuring roller.
  • the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor and the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor are not located one behind the other in the circumferential direction.
  • Web heights can be more than 2 mm, preferably 5 mm or more and are preferably less than 20 mm, preferably less than 15 mm and particularly preferably equal to or less than 12 mm.
  • the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor is less than 2.2 times the web height away from the point on the sensor surface of the second force sensor that is the sensor surface of the first force sensor is closest, preferably less than 2 times, particularly preferably equal to or less than 1 time the web height.
  • the first force sensor and the second force sensor are arranged in a recess that leads from one end face of the measuring roller body to the opposite end face of the measuring roller body.
  • the recess in which the first force sensor and the second force sensor are located leads in a direction parallel to the longitudinal axis of the measuring roller body and extends over at least 50%, particularly preferably at least 60%, particularly preferably at least 75%, particularly preferably at least 80%, particularly preferably at least 90%, particularly preferably at least 95% of the length of the measuring roller body as it results when measured from face to face (that is to say without taking the pins into account).
  • the measuring roller has a plurality of recesses
  • all recesses are designed in the same way, that is to say have longitudinal extensions parallel to one another and have the same lengths.
  • figure 5 the DE 102 07 501 C1 shows a possibility of staggering the depth of the recesses in a helical manner. Such an embodiment could be supplemented with regard to the selection of the lengths of the recesses such that one of the axially running recesses shown there is designed in such a way that it runs from one end face to the opposite end face of the measuring roller.
  • the recess has an opening which is arranged on an end face of the measuring roller body.
  • This recess can be designed to be open. However, designs are also conceivable in which the recess is closed by a cover. In the case of several recesses which end at the end face, each recess would have its own cover in this embodiment.
  • Embodiments of the measuring roller according to the invention are also conceivable, particularly in those embodiments in which the measuring roller has a plurality of recesses, in which the measuring roller body has a front cover for closing the openings of the recesses together, for example a cover as shown in 1 or 2 the DE 10 2014 012 426 A1 will be shown.
  • the measuring roller has a plurality of recesses, each of which has openings which are arranged on an end face of the measuring roller body, to close these openings with an end cover, as is shown, for example, in 1 the DE 102 07 501 C1 will be shown.
  • the measuring roller has a large number of force sensors, all of which are arranged in a recess. Particularly preferably, more than 5, particularly preferably more than 7, particularly preferably more than 10, particularly preferably more than 15 force sensors are arranged in a recess.
  • the measuring roller has a first recess in which a multiplicity of force sensors are arranged next to one another; more than 5 are particularly preferred, more than 7 are particularly preferred, particularly preferred more than 10, particularly preferably more than 15 force sensors are arranged in the first recess, while the measuring roller of this embodiment has further recesses, in each of which only a single force sensor or less than 15, particularly preferably less than 10, particularly preferably less than 7, particularly preferably less than 5 force sensors are arranged.
  • the force sensors are distributed equidistantly over the length of the recess, but are at least distributed equidistantly from one another (for embodiments in which the distance from the last force sensor to the end of the recess does not correspond to the distance that this last force sensor has to its neighboring (penultimate) force sensor).
  • a first group of force sensors is arranged equidistant from one another and a second group of force sensors are arranged at a different distance from the force sensors of this first group, with the force sensors of the second group in turn being arranged equidistant from one another.
  • a zone can thus be created within the recess, within which the force sensors are arranged closer to one another, while the force sensors that are also provided are arranged at a greater distance from one another outside this zone.
  • the force sensors are wedged in the recess.
  • they can be loaded with a predefined prestress. They are not only fixed in their position within the recess by being wedged, but can also be loaded with prestressing forces. Loading with pretensioning forces is preferred because when using the measuring roller in normal operation, the installation conditions for the force sensor can change under the various operating conditions, such as temperature changes. It is therefore preferred that the force sensors, when installed in the recesses, are subjected to a prestressing force that is so high that the force connection between the force sensor and the recess wall is maintained under all operating influences during operation, so that a hysteresis-free and linear measurement is ensured.
  • the force sensors should be fixed in the recesses, namely wedged, and preferably also braced by the wedging.
  • the wedging is designed in such a way that a prestress is exerted on the force sensor. This prestressing is particularly preferably selected in such a way that the force connection between the force sensor and the wall of the recess is maintained during operational use under all operational influences, so that a hysteresis-free and linear measurement is ensured.
  • the preload can also be deliberately metered in order to compensate for manufacturing tolerances of both the force sensors and also to compensate for the recesses.
  • force sensors with plane-parallel surfaces can be arranged between wedge-shaped holding pieces, for example clamping wedges, which are moved against one another until the force sensor is immovably clamped between the holding pieces.
  • One of the two holding pieces is normally arranged stationarily in the recess where the force sensor is to be placed, while the other holding piece is displaced in the recess in order to fix the force sensor. This can be done with the help of a clamping screw, which is supported on the measuring roller body and acts on the movable holding piece via a spacer sleeve.
  • the arrangement of several force sensors in radially movable sliding pieces, which are fixed in the recess with the aid of a V-ledge, is particularly favorable.
  • the sliding pieces can be arranged in a spacer strip and can be pressed radially outwards with the aid of wedge-shaped holding lugs of a clamping strip and thus clamped in the recesses.
  • the recesses can be connected to line channels running parallel.
  • the recesses can also be connected to a central cable recess in the measuring roller via a transverse channel.
  • the transverse channel can run in the body of the measuring roller or be an open channel on the end face of the measuring roller and then closed with a cover.
  • the holding pieces for the force sensors or the strips in the recesses can be provided with a longitudinal rib which engages in a complementary guide groove in the body of the measuring roller.
  • the force sensor is held between two pairs of inner and outer wedge members. This makes it possible, on the one hand, to align the force sensor in the effective direction of the compressive force to be measured. Furthermore, this arrangement makes it possible to construct the holder geometrically symmetrically, possibly even axially symmetrically, with respect to a plane running through the installation position of the force sensor and arranged perpendicularly to the effective direction of the compressive force to be measured.
  • the holder With regard to its outer surfaces, the holder can be adapted to the shape of the recess into which the holder and the force sensor are to be clamped, and at the same time allows the inner surfaces that directly or indirectly influence the installation orientation of the force sensor to be adapted to the desired orientation, for example these inner surfaces perpendicularly to the effective direction of the compressive force to be measured.
  • the surface quality of the recess (for example the axial recess) into which the holder is inserted can be lower without tilting occurring. This eliminates the need for complex processes to produce a good surface quality, such as honing or roller burnishing.
  • the holder is geometrically symmetrical with respect to a plane running through the installation position of the force sensor and arranged perpendicularly to the effective direction of the compressive force to be measured.
  • the tuning of the geometry of the components arranged above the force sensor and below the force sensor already reduces the tilting moments that occur during prestressing and can even completely avoid them.
  • the mount can be designed symmetrically with respect to a plane running through the installation position of the force sensor and arranged perpendicular to the effective direction of the compressive force to be measured with regard to the materials used for the components forming the mount and/or with regard to the surface properties of these components. Tilting moments can be generated not only by geometric differences in the components provided above and below the force sensor, but also by different frictional forces occurring between surfaces moving against one another above and below the force sensor due to different material selection or different surface properties. This can be prevented by the symmetrical design of the relevant materials or surface properties.
  • a connection which connects the first inner wedge element and the second inner wedge element to avoid a relative displacement in a direction which is not the effective direction of the compressive force to be measured.
  • the tilting moments to be avoided can also arise from the fact that comparable components above the force sensor and below the force sensor do not move synchronously with one another. This can be avoided if the relevant components are connected to one another.
  • this connection is preferably designed in such a way that it allows a displacement of the two connected components in the effective direction of the compressive force to be measured.
  • design measures are preferably used to try to keep the force shunt as small as possible, i.e.
  • the part of the compressive force to be measured that is conducted past the force sensor by the mount is reduced keep. This is done in that the components are designed to be resilient relative to one another in the effective direction of the compressive force to be measured and the spring stiffness of the force bridge created by the connection is as low as possible.
  • connection which connects the first outer wedge element and the second outer wedge element in order to avoid a relative displacement in a direction which is not the effective direction of the compressive force to be measured. This achieves the same advantages as when connecting the inner wedge elements.
  • the outer surface of the first inner wedge element and/or the outer surface of the second inner wedge element can be designed flat in the manner of a flat wedge
  • the outer surface of the first inner wedge element and/or the outer surface of the second inner wedge element is designed as a partial surface of a cone whose longitudinal axis through the installation position of the force sensor.
  • the inner surface of the first outer wedge element and/or the inner surface of the second outer wedge element is preferably designed as a partial surface of the delimitation of a conical recess whose longitudinal axis runs through the installation position of the force sensor.
  • first inner wedge element and the second inner wedge element are partial elements of an inner sleeve manufactured in one piece. This offers advantages both with regard to the manufacture of the components of the mount and with regard to the handling of the mount when installing the force sensor.
  • the inner sleeve has a longitudinal slit between the first inner wedge element and the second inner wedge element, which runs essentially perpendicular to the effective direction of the compressive force to be measured. This reduces the spring stiffness of the inner sleeve so that the force shunt remains low.
  • the inner sleeve can be designed with a small wall thickness.
  • a small wall thickness is understood to mean a wall thickness of, for example, 0.3 mm to 5 mm with a usual inside diameter of, for example, 20 mm to 50 mm.
  • the selected wall thickness of the sleeves can also be chosen depending on the sleeve length, the displacement path and the pitch. It can also be 1/10 mm at the thinnest point.
  • the longitudinal slot can be designed in such a way that it has almost the entire longitudinal extent of the inner sleeve and a narrow web remains only at one or both ends as a connection between the first inner wedge element and the second inner wedge element.
  • the inner sleeve has two longitudinal slots.
  • the longitudinal slot or slots is/are preferably provided in a plane running through the installation position of the force sensor and arranged perpendicular to the direction of action of the compressive force to be measured.
  • first outer wedge element and the second outer wedge element can alternatively or additionally be part elements or parts of an outer sleeve produced in one piece.
  • this outer sleeve can also have at least one longitudinal slit between the first outer wedge element and the second outer wedge element, which runs essentially perpendicular to the effective direction of the compressive force to be measured.
  • the inner surface of the first inner wedge element and/or the inner surface of the second inner wedge element is flat and arranged in a plane perpendicular to the effective direction of the compressive force to be measured.
  • the force sensor which is mostly planar on its top and bottom, to be inserted between the inner wedge elements so that it rests directly against the inner surfaces.
  • a first intermediate piece with a spherical cap can be provided between the first inner wedge element and the installation position of the force sensor and/or a second intermediate piece with a spherical cap can be provided between the second inner wedge element and the installed position of the force sensor, the spherical cap being that of the one Inner surface of an inner wedge element facing surface forms and the associated inner surface of the inner wedge element is formed correspondingly.
  • the cap preferably has the geometric shape of a partial surface of a cylindrical body.
  • the outer surface of the first and/or the second outer wedge element is a partial surface of a cylindrical body. This configuration is particularly recommended in areas of application in which the force sensor is to be held in a recess, for example the axial recess of a measuring roller, by means of the holder.
  • the mount can have centering pins that engage in centering recesses in components. Individual, loose components, such as the force sensor, can be positioned well and precisely in relation to other components, such as the inner wedge elements or the inner sleeve, by means of these centering pins.
  • the bracket has an internal thread formed in the first and second male wedge members, the longitudinal axis of which passes through the installation position of the force sensor, and a pressure screw screwed into the internal thread, which can come into contact with the first female wedge member and the second female wedge member and relatively to the first and the second outer wedge element.
  • This pressure screw can be used to easily pre-tension the bracket.
  • the bracket can have an internal thread introduced into the first and the second inner wedge element, the longitudinal axis of which runs through the installation position of the force sensor and a tension screw, which is screwed into the internal thread and can come into contact with the first and the second outer wedge element with its screw head and it can slide relative to the first and second inner wedge members.
  • more than one type of force sensor is provided in the measuring roller for measuring different mechanical forces.
  • the influence of the temperature can be detected, with the inventors recognizing that the influence of the temperature can be detected by measuring a mechanical force present in the measuring roller and then corrected accordingly.
  • a second mechanical force is measured, which allows conclusions to be drawn about the influence of a temperature input caused by the use of the measuring roller in the hot strip.
  • the measuring roller configured according to the invention enables the force component generated by the thermal input into the measuring roller body to be separated from the sum signal of the force measuring transducer.
  • one type of force sensor is a force sensor for measuring the radial force
  • one type of force sensor is a force sensor for measuring the prestressing force of the force sensor for measuring the radial force.
  • a temperature change on the surface of the measuring roller leads to an elastic deformation of the measuring roller such that the force sensors usually provided for measuring the radial force that are installed under prestressing force change their prestressing force and thus also their linearity.
  • the force sensors for measuring the preload force applied to the force sensors for measuring the radial force it is possible to measure the influence of the thermal deformation of the measuring roller body, and the proportion of the generated by the thermal deformation Separating the measurement signal of the force sensor for measuring the radial force from the actual radial force caused by the strip-shaped material.
  • the inventors were also the first to recognize that with force sensors of another type that measure a mechanical force, it is possible that, in addition to the thermal deformation of the measuring roller, which influences the measurement result of the force sensors of a first type, a relative temperature distribution over the bandwidth can be determined , if several force sensors are arranged in the longitudinal direction of the measuring roller. For example, for the thermal input of 1°C, a value x in N be measured, via which the temperature distribution can be determined by relating it to the measured mechanical force.
  • the forces introduced by the strip-shaped product under longitudinal tension are measured dynamically by a type of force sensor and the forces occurring as a result of the deformation of the measuring roller as a result of thermal input are measured statically by another type of force sensor.
  • the currently measured forces can be related to one another and the radial forces measured by the force sensors of one type can be corrected for the thermal input or the thermal deformation.
  • one type of force sensor can be fixed or braced in the recesses, for example wedged. These prestresses are intentional and can easily be compensated for using measurement technology.
  • the preload can be set to a predetermined value.
  • force sensors with plane-parallel surfaces can be arranged between wedge-shaped holding pieces, for example clamping wedges, which are moved against one another until the force sensor is immovably clamped between the holding pieces.
  • a force sensor of the other type can preferably be fixed or braced together in a housing with the first type of force sensor in the recesses.
  • the other type of force sensor can also be fastened, for example, in a recess formed on one of the holding pieces or on one of the holding pieces, with which one type of force sensor is braced in the cutout.
  • One of the two holding pieces can be arranged stationarily in the recess where the force sensor is to be placed, while the other holding piece is displaced in the recess in order to fix the force sensor.
  • This can e.g. B. done with the help of a clamping screw, which is supported on the measuring roller body and acts on the movable holding piece via a spacer sleeve.
  • the force sensors of different types are arranged adjacent to one another in order to measure the direct influence of the thermal input "on site” and to apply the influence to the signal of the other force sensor as a correction.
  • a force sensor of one type is arranged with a force sensor of another type in or on a housing or a holder, which simplifies handling during manufacture.
  • the housing can be arranged in a recess of the measuring roller.
  • the force sensor of one type can already be pretensioned in the housing, with the force sensor of the other type being arranged on the force sensor of the first type and measuring the pretensioning force can. Provision can be made for the force sensor of the first type to be preloaded in the housing and/or with the housing, with the force sensor of the second type determining the preload on the housing and thus the thermal input.
  • housing also includes holders that do not have a closed design of a conventional housing.
  • a housing according to the invention can in particular as in the DE 10 2006 003 792 A1 , the disclosure content of which is explicitly included here by reference, be configured as described, with the housing or the holder having an inner sleeve having an outer peripheral cone, in which a force sensor for measuring the radial force (force sensor of a type) is arranged, and one engaging with the inner sleeve has an inner peripheral cone having an outer sleeve that can be brought or braced with this.
  • a force sensor for measuring a mechanical force counteracting the radial force can be arranged or fastened on the inner sleeve or in a recess thereof.
  • the force sensor can be glued.
  • a force sensor for measuring a mechanical force counteracting the radial force can also be arranged on the outer sleeve or in a recess thereof. It is also possible that the force sensor for a mechanical force counteracting the radial force (force sensor of another type) is arranged in a recess of the measuring roller in the area of the location provided for the installation of the housing or the holder, without itself having to deal with the housing or the bracket to be connected.
  • the force sensor of the other type is arranged in such a way that it lies in the flow of force of the force acting on the force sensor of the first type.
  • the arrangement should be in the power flow of one type of force sensor.
  • one type of force sensor is designed as a quartz force sensor, a quartz force sensor being a piezoelectric element on the crystal surface of which the force to be measured generates charges that serve as a measured variable.
  • Such force sensors have a high sensitivity to demands, a high natural frequency and stability with small dimensions and make it possible to compensate for initial loads without impairing the measurement result.
  • a force sensor of a (further) type is preferably designed as a strain gauge which, for example, measures the prestressing force of a quartz force sensor can, which can change when the measuring roller is deformed as a result of thermal input into the measuring roller.
  • the measuring roller according to the invention is particularly preferably used when determining properties of a metal strip during cold or hot rolling of the metal strip, in particular for determining the flatness of the metal strip.
  • Further areas of application can be further processing lines, such as re-rolling stands (skin-passing stands), strip annealing lines, galvanizing lines, stretch-bending straightening lines!
  • the measuring roller 1 according to the invention with a journal 2 has a measuring roller body 1a designed as a solid roller.
  • a recess 3 designed as a borehole that is axially parallel to the longitudinal axis A of the measuring roller body 1a.
  • the recess 3 is closed at the front with a cover 6 or individually with covers and contains a first force sensor 7a, a second force sensor 7b arranged next to the first force sensor 7a, a third force sensor 7c arranged next to the second force sensor 7b and a third force sensor next to the third force sensor 7c arranged fourth force sensor 7d, of which in each case a cable 8 (shown only as one cable for the sake of simplification) is led through the bore 3, the transverse channel 4 and the central channel 5 to the outside.
  • a cable 8 shown only as one cable for the sake of simplification
  • the measuring roller 1 shown schematically and in perspective with the cover 6 removed has cable ducts 10 , 11 lying opposite one another parallel to each bore 3 for lines routed to the outside via the transverse duct 4 and the central duct 5 .
  • the holes can, as in the 4 and figure 5 shown, emanate from both end faces of the roller 1 and have different depths as blind holes.
  • the result of this is that the individual sensors are arranged along a helix 20 , ie in a staggered manner, and overall record the entire width of the roll 1 .
  • individual recesses 3 can be designed in such a way that only one force sensor 7 is arranged in them. But it is also in the embodiment 4 a recess 3 is provided which has a multiplicity of force sensors 7 .
  • This recess 3 is in the embodiment of 4 designed so that it leads from one end face of the measuring roller body 1a to the opposite end face of the measuring roller body.
  • FIG 5 shows the arrangement of two force sensors 107a, 107b in a bore 103 of a measuring roller body 1a of a measuring roller, which is designed in the manner of 1 and 2 the design shown is designed as a full roller with an axial bore 103 introduced into the full roller.
  • Force sensors 7a, 7b shown each have a housing 120.
  • a socket 122 is installed on one side of the respective housing 120 .
  • the respective force sensor 107a, 107b has a piezo element 113, which consists of a multilayer crystal arrangement.
  • the respective piezo element 113 lies between two force transmission disks 114, 115.
  • the force transmission disks 114, 115 are connected to the housing 120 by means of elastic flanges 116.
  • the sensor surface of force sensor 107a is the outer surface of force transmission disk 114 in contact with the bore wall of bore 103.
  • the sensor surface of force sensor 107b is the outer surface of force transmission disk 114 in contact with the bore wall of bore 103.
  • the angle ALPHA between the end boundary line 117 and the line 118 is less than 65°, namely about 45°.
  • the bore 103 has a rectangular cross section.
  • FIG 6 shows a schematic top view of the force sensors 107a, 107b arranged in the bore 103, sectioned at the height of the upper bore wall, with FIG 6 line 123 is drawn, which connects the point on the sensor surface of the first force sensor 107a, which is closest to the sensor surface of the second force sensor 107b, with the point on the sensor surface of the second force sensor 107b, which is closest to the sensor surface of the first force sensor 107a.
  • the sensor surface of force sensor 107a is the outer surface of force transmission disk 114 in contact with the bore wall of bore 103.
  • the sensor surface of force sensor 107b is the outer surface of force transmission disk 114 in contact with the bore wall of bore 103.
  • the measuring roller 201 shown has a measuring roller body 201a designed as a solid roller, in the peripheral surface of which there are a large number of recesses 203, 203a, 203b distributed over the width of the roller, into which measuring sensors, for example displacement or force or Piezo transducers 207 in the form of quartz washers are used to measure dynamic and quasi-static forces with cylindrical covers 234.
  • the sensors 207 extend between the bottom 239 of the recess 203 and the cover 234.
  • the cover 234 has a depression in which the head 236 of a clamping screw 237 is located, which engages in a threaded bore 238 of the measuring roller 201.
  • the cover 234 with the measuring transducer 207 is clamped against the base 239 of the recess 203 with the aid of the clamping screw 237 .
  • the cover 234 is provided with a plastic layer 240 .
  • the gap can also be between the encoder cover and the wall of the recess.
  • the 7 12 shows that the bores 203b are arranged close together and on a line parallel to the longitudinal axis A of the measuring roller body 203b.
  • FIG. 2 shows, in the form of the bores 203a, those which are arranged close to each other but not on a line which runs parallel to the longitudinal axis A of the measuring roller body 203b.
  • the measuring roller body 201a can be designed with a coating, not shown here, to form a closed peripheral surface.
  • the holder 1101 holds the force sensor 1102 in an axial bore 1103 of the measuring roller 1104 shown in detail.
  • the holder 1101 has an inner sleeve 1105, which consists of a first inner wedge element 1106 arranged above the installation position provided for the force sensor 1102 with an inner surface 1107 pointing to the installation position of the force sensor 1102 and an outer surface 1108 which is at an angle to the inner surface 1107 and lies opposite the inner surface 1107 .
  • the inner sleeve 1105 has a second inner wedge element 1109 arranged below the installation position provided for the force sensor 1102, which has a Inner surface 1110 facing the force sensor 1102 and an outer surface 1111 standing at an angle to the inner surface 1110 and lying opposite the inner surface 1110 .
  • the holder 1101 has an outer sleeve 1112 .
  • the outer sleeve 1112 has a first outer wedge element 1113 with an inner surface 1114 pointing towards the installation position of the force sensor and an outer surface 1115 standing at an angle to the inner surface 1114 and opposite the inner surface 1114 .
  • the outer sleeve 1112 has a second outer wedge element 1116 with an inner surface 1117 pointing towards the installation position of the force sensor 1102, with which the outer wedge element 1116 rests on the outer surface of the second inner wedge element 1109.
  • the outer wedge element 1116 has an outer surface 1118 opposite the inner surface 1117 .
  • a pressure screw 1119 with an external thread is screwed into an internal thread 1120 formed in the outer sleeve.
  • the screwing depth of the pressure screw 1119 determines the relative position of the inner sleeve 1105 in relation to the outer sleeve 1112 and thus the degree of pretensioning of the holder 1101 in the axial recess 1103.
  • the inner sleeve 1105 and the outer sleeve 1112 have slots 1121 and 1122, respectively. These longitudinal slots 1121, 1122 reduce the spring stiffness of the inner sleeve 1105 or the outer sleeve 1112 and ensure that the force shunt remains low.
  • the compressive force to be determined which acts in the effective direction of arrow D, is therefore introduced into force sensor 1102.
  • the outer sleeve 1112 and the inner sleeve 1105 can be produced in a first machining step by turning.
  • the shape tolerance of the inner surfaces 1114, 1117 of the outer sleeve 1112 and the outer surfaces 1108, 1111 of the inner sleeve can be produced particularly precisely, thus enabling the inner sleeve 1105 to move relative to the outer sleeve 1112 without a tilting moment.
  • the view of the 9 Laterally arranged areas of the inner sleeve 1105 are further narrowed in order to reduce the lateral wall thickness of the inner sleeve 1105. This creates in the view of 9 lateral free spaces 1123, 1124 between the inner sleeve 1105 and the outer sleeve 1112, which promote the introduction of force into the force sensor 1102 and further reduce the force shunt.
  • the 10 shows the top view of the force sensor 1102.
  • the cable arrangement leading to the force sensor 1102 can be seen clearly.
  • a first cable 1125 leads to the force sensor 1102 shown, while further cables 1126 lead to further force sensors, not shown, which are arranged in the same axial recess 1103 .
  • the one in the 11 illustrated further embodiment of the bracket has basically the same structure as in the Figures 8 to 10 bracket shown. Identical components have reference numbers increased by 100. However, in the inner sleeve 1205 of this second embodiment, a plurality of recesses 1226 are provided, which further reduce the lateral wall thickness of the inner sleeve 1205 and thus lead to an even lower spring stiffness and thus a lower force shunt.
  • FIGS Figures 12 to 14 Another embodiment of the invention is shown which differs from that shown in FIGS Figures 8 to 10 Illustrated differs in that between the inner sleeve 1305 and the force sensor 1302 intermediate pieces 1327 and 1328 are provided with spherical caps. Otherwise, the components shown correspond to the components in the Figures 8 to 10 elements shown. They are shown with a reference number increased by 200.
  • FIG. 15 shows one of the in 8 shown comparable bracket 1401. It differs from that in 8 Shown by a different orientation of the inner surfaces 1408, 1411 and the corresponding outer surfaces 1414, 1417 and by a tension screw 1429 which is screwed into an internal thread 1430 of the inner sleeve 1405.
  • the screwing depth of the tension screw 1429 in the internal thread 1430 determines the position of the inner sleeve 1405 relative to the outer sleeve 1412 and thus the preload of the holder 1401 in the axial bore 1403 of the measuring roller 1404.
  • the same components as in Figures 8 to 10 The elements shown are marked with a reference number increased by 300.
  • the housing 1101 or the holder holds the force sensor 1102a of a first type, which is designed to measure the radial force, in the recess 1103 of the measuring roller shown in detail.
  • the housing 1101 has an inner sleeve 1105, which consists of a first inner wedge element 1106, which is arranged above the installation position intended for the force sensor 1102a and has an inner surface 1107 pointing towards the installation position of the force sensor 1102a and an outer surface 1108 which is at an angle to the inner surface 1107 and is opposite the inner surface 1107 on.
  • Inner sleeve 1105 also has a second inner wedge element 1127 which is arranged below the installation position provided for force sensor 1102a and has an inner surface 1110 pointing towards the installation position of force sensor 1102a and an outer surface 1111 which is at an angle to inner surface 1110 and is opposite inner surface 1110.
  • the housing 1101 has an outer sleeve 1112, which has a first outer wedge element 1113 with an inner surface 1114 pointing to the installation position of the force sensor 1102a and an outer surface 1115 standing at an angle to the inner surface 1114 and opposite the inner surface 1114. Furthermore, the outer sleeve 1112 has a second outer wedge element 1120 with an inner surface 1117 pointing towards the installation position of the force sensor 1102a, with which the outer wedge element 1120 rests on the outer surface of the second inner wedge element 1127. Furthermore, the outer wedge element 1120 has an outer surface 1116 opposite the inner surface 1117 .
  • a pressure screw 1119 with an external thread is screwed into an internal thread introduced into the outer sleeve 1112 .
  • the screwing depth of the pressure screw 1119 determines the relative position of the inner sleeve 1127 in relation to the outer sleeve 1112 and thus the degree of prestressing of the housing 1101 in the recess 1103.
  • the force sensor 1102b is arranged in the inner sleeve 1127 in a recess of the same. The pretensioning force can be measured with the force sensor 1102b.
  • the force sensor 1102a for measuring the radial force is preloaded, it being possible for the size of the preload to be determined by means of the force sensor 1102b.
  • radial forces are introduced into the measuring roller by the deflection of the strip that is under longitudinal tension, which elastically deform the outer shell of the measuring roller.
  • the "membrane-shaped" web above the recess 1103 is thereby displaced in the radial direction, which can be determined by the force sensor 1102a, which can be designed as a piezoelectric force sensor.
  • the force sensors 1102a, 1102b arranged in pairs closely spaced from one another are inserted into the housing 101 having the inner sleeve 1127 and the outer sleeve 1112 and then positioned in the recess 1103 of the measuring roller 1 and clamped in place.
  • figure 17 shows a detailed view of a recess 1103 of the measuring roller 1 arranged force sensors 1102a and 1102b figure 16 different embodiment.
  • the structure of the embodiment as shown in figure 17 is shown essentially corresponds to the structure of in figure 16 embodiment shown.
  • the force sensor 1107a is designed as a piezoelectric force sensor, being somewhat shorter in the radial direction than the force sensor 1102a in FIG 16 .
  • the force sensor 1107b which is designed as a statically measuring force sensor, in particular as a strain gauge, is provided as a force sensor of another type.
  • FIG. 18 shows the forces applied to the measuring roller by a metal strip that is partially wrapped around the measuring roller and is under strip tension.
  • the quartz force sensors located in recesses in the measuring roller generate an electrical charge. This is directly proportional to the force applied to the quartz.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP21192579.7A 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure Withdrawn EP3936249A1 (fr)

Applications Claiming Priority (3)

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DE102018009611.5A DE102018009611A1 (de) 2018-12-11 2018-12-11 Messrolle zum Feststellen einer Eigenschaft eines über die Messrolle geführten bandförmigen Guts
EP19816688.6A EP3790675B1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure
PCT/EP2019/084051 WO2020120329A1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure

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EP19816688.6A Division EP3790675B1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure
EP19816688.6A Division-Into EP3790675B1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure
PCT/EP2019/084051 Previously-Filed-Application WO2020120329A1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure

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EP21192579.7A Withdrawn EP3936249A1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure

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FR3077999B1 (fr) * 2018-02-22 2020-03-20 Commissariat A L'energie Atomique Et Aux Energies Alternatives Rouleau de planeite, systeme de mesure de planeite et ligne d'operations de laminage associes
DE102020007286B4 (de) * 2020-11-30 2023-05-04 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Spannrollensatz für eine Richtanlage zum Richten eines Bandes, Richtanlage, Nachwalzgerüstanlage und Verfahren zum Betreiben einer Richtanlage
DE102021005558B3 (de) 2021-11-09 2023-03-23 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Messrolle zum Feststellen einer Eigenschaft eines über eine Messrolle geführten bandförmigen Guts sowie Verwendung einer solchen Messrolle
DE102022125376A1 (de) 2022-09-30 2024-04-04 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Messrolle zum Messen eines Bandzugs, Vorrichtung und Verfahren

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DE102018009611A1 (de) 2020-06-18
CN113382809B (zh) 2023-09-15
WO2020120329A1 (fr) 2020-06-18
EP3790675B1 (fr) 2021-10-06
JP2022510993A (ja) 2022-01-28
EP3790675A1 (fr) 2021-03-17
JP7549578B2 (ja) 2024-09-11

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