CN104209348B - For determining that measuring of the flatness deviation of banding article is rolled and for the method determining the flatness deviation of banding article - Google Patents

Abstract

The invention relates to a measuring roll for determining flatness deviations of strip-like objects, wherein the measuring roll has a longitudinal axis and at least one sensor arranged in a recess in the measuring roll, which sensor can generate a dependent For the measurement signal of the force introduced onto the outer surface of the measuring roll, the measuring roll has a first temperature sensor arranged radially at a first distance from the longitudinal axis and a radially at a distance from the first A second temperature sensor is disposed at a second, different distance away from the longitudinal axis.

Description

For determining flatness deviations of strip-like items Method of measuring roll and for determining deviation from flatness of strip-shaped articles

technical field

The invention relates to a measuring roll and a method for determining flatness deviations of strip-like objects.

Background technique

Known from DE 29 44 723 A1 is a measuring roll for determining flatness deviations when processing strip-shaped goods, wherein the measuring roll is formed as a hollow roll comprising rings held together by means of clamping bolts . Another embodiment of a measuring roller for determining flatness deviations in the processing of strip-shaped goods is known from DE 42 36 657 A1. It is known from DE 102 07 501 C1 that a measuring roll for determining flatness deviations when processing strip-shaped goods is designed as a solid roll and that a plurality of sensors are arranged in axially accessible recesses. Further possibilities for incorporating sensors in the measuring roll are known from DE 196 16 980 B4 and DE 198 38 457 B4. A holder for a pressure sensor is known from DE 10 2006 003 792 A1, with which the sensor can be held in the recess of the measuring roll.

Measuring rolls known from the prior art already provide good measurement results in their practical use with respect to flatness deviations of strip-like objects. The measuring rolls known from the prior art are known in particular for their use in determining flatness deviations when processing metal strips. The metal strip is guided on the measuring roller which rotates with it, so that the metal strip partially wraps around the outer surface (circumferential surface) of the measuring roller. This wrapping around the measuring roll causes the metal strip to introduce radial forces onto the outer surface of the measuring roll. With the aid of sensors inserted in the measuring roller, a measuring signal is generated which is dependent on the force applied to the outer surface of the measuring roller. By arranging a plurality of such sensors in different sectors of the measuring roll, it can be determined whether the metal strip introduces different forces at different points on the outer surface of the measuring roll. If a different measurement signal is produced, this alone is already an indication that there is a flatness deviation. Furthermore, it is possible to obtain information from the evaluation of the difference in the measurement signals as to how strong the deviation from the flatness is and at which point on the strip the deviation from the flatness is present.

Contents of the invention

Against this background, the object of the present invention is to propose a measuring roll and method for determining flatness deviations of strip-shaped articles, with which method flatness deviations can be measured more precisely and/or more easily.

This task is solved by the invention. Measuring roll for determining flatness deviations of strip-like objects, wherein the measuring roll has a longitudinal axis and at least one sensor arranged in a recess in the measuring roll, which sensor can generate a The measurement signal of the force on the outer surface of the device, characterized in that there is a first temperature sensor arranged in the radial direction at a first distance away from the longitudinal axis and a second temperature sensor in the radial direction at a distance different from the first distance. A second temperature sensor is positioned away from the longitudinal axis.

Method for determining deviations from the flatness of a web-shaped article with the measuring roll, wherein the measuring roll has at least one first sensor arranged in a first recess and at least one second sensor arranged in a second recess, And the first gap and the second gap are arranged at different positions along the circumferential direction of the measuring roll, wherein the first sensor can generate a first measuring signal dependent on the force introduced onto the outer surface of the measuring roll, and the second sensor can Generate a second measurement signal that is dependent on the force that is introduced into the outer surface of the measuring roll, wherein the strip-like object is guided on the outer circumference of the measuring roll and contacts at least one portion of the outer surface of the measuring roll, from a A first temperature signal generated by a first temperature sensor and a second temperature signal generated by a second temperature sensor generate a difference signal from a first measurement signal generated by the first sensor and the The difference signal produces a modified first measurement signal.

The invention is based on the basic idea that, in addition to at least one sensor which can generate a measuring signal dependent on the force introduced onto the outer surface of the measuring roll provided in such a measuring roll, a A first temperature sensor is arranged at a first distance from the longitudinal axis of the measuring roll and a second temperature sensor is arranged at a second distance from the longitudinal axis in the radial direction, which is different from the first distance. This additional arrangement of the first and second temperature sensors at different radial distances relative to the longitudinal axis allows the determination of the temperature change between the location where the first temperature sensor is arranged and the location where the second temperature sensor is arranged. Studies have shown that the manner in which the force introduced on the outer surface of the measuring roller is introduced by the measuring roller so that it can be received by the sensor for generating a measuring signal that is dependent on this force can depend on the temperature situation. The temperature measured at the location of the first temperature sensor or the temperature measured at the location of the second temperature sensor and/or the difference between these two temperatures can be used to correct the measurement signal produced by the above-mentioned sensor in dependence on the force introduced, for example if the measurement The magnitude of the signal at a first temperature condition means that a force of a certain first magnitude is introduced onto the outer surface of the measuring roller, while the same magnitude of the measurement signal at different temperature conditions may mean that a force of a different magnitude is introduced Introduced onto the outer surface of the measuring roll. Also the arrangement of the first temperature sensor and the second temperature sensor in accordance with the present invention provides the possibility of determining a change in preload with respect to a sensor which in a preferred embodiment is inserted into the recess under preload. in conclusion. Studies have thus shown that conclusions can be drawn about changes in the preload of the sensors installed in the event of preload from the difference between the temperature measured at the location of the first temperature sensor and the temperature measured at the location of the second temperature sensor.

The measuring roll according to the invention can be a hollow roll comprising a plurality of rings which are held together by means of clamping screws, as they are known, for example, from DE 29 44 723 A1. In a preferred embodiment, the measuring roll is designed as a so-called solid roll. It is understood to mean a measuring roller which essentially has a one-piece base body. The basic body generally comprises a cylindrical middle part with journals at its ends for supporting the measuring rollers. In order to form the measuring roller, the basic body is then usually only supplemented by a small number of structural parts, such as the at least one sensor, which can generate a measurement signal that is dependent on the force introduced on the outer surface of the measuring roller, plus the sensor or the wiring required for such a sensor. In addition, such a measuring roller designed as a solid roller can also have a surface coating. Also attach some small parts to hold the sensor in the void. But such solid rolls are characterized by a coarse, monolithic substrate.

In a preferred embodiment, the measuring roller consists essentially of steel.

It has been shown that these materials are particularly suitable for transmitting the forces introduced on the outer surface of the measuring roller to the sensors for generating the force-dependent measuring signals. In addition, measuring rollers made of this material can also be used in one of the preferred fields of use of the present invention, that is, in the case of processing hot or hot metal strips, which are in the preferred field of use. The time of measurement has a temperature above the prevailing room temperature, particularly preferably above 50° C. and particularly preferably above 300° C.

In a preferred embodiment, the recess in which at least one sensor for generating the force-dependent measuring signal is arranged can be a recess introduced radially from the outer surface into the measuring roller, as described in DE 196 16 980 B4 or DE 198 38 457 B4 known. In another preferred embodiment, however, the recess in which the sensor for generating the applied force-dependent measurement signal is arranged is realized axially, as is known from DE 102 07 501 C1.

In a preferred embodiment, the sensor is inserted into the recess under pretension, for example as a part of a multi-part inner fitting arranged in the recess. A possible solution for loading under pretension is known from FIGS. 6 and 7 of DE 102 07 501 C1 and the expansions in FIGS. 9, 10 and 11, which can also be used in the present invention for Integral part of the sensor in the void.

The advantages of the invention can already be realized in those measuring rollers which have only a single or a few sensors which can generate a measuring signal which is dependent on the force introduced on the outer surface of said measuring roller. In a preferred embodiment, a plurality of such sensors are arranged at different positions in the circumferential direction of the measuring roller. The number of sensors arranged in the circumferential direction is increased to determine the flatness deviation of the strip-shaped article when the strip-shaped article is in contact with the outer surface of the measuring roller and is accompanied by the rotation of the measuring roller in the direction of the strip. resolution. If only a small number of sensors are placed along the circumference of the measuring roller, it may happen that that part of the surface of the strip-shaped article to be inspected has particularly strong flatness deviations exactly on that sector of the measuring roller on which no sensor is provided. The area contacts the surface of the measuring roll.

A possible arrangement of sensors in the measuring roll is shown in FIG. 5 of DE 102 07 501 C1, wherein it is also conceivable to arrange a plurality of sensors in the recesses shown there, as shown for example in FIG. 9 like that. Thus just as the resolution along the strip direction of the strip increases with the number of sensors along the circumferential direction of the measuring roll, along the strip direction of the strip (that is, in a direction perpendicular to the strip direction of the strip and not The resolution along the thickness of the strip) increases with the number of sensors along the axis of the measuring roll.

In a preferred embodiment, one or more or all of the sensors arranged can be arranged in such a way that they can measure the temperature of the (circumferential) outer surface of the measuring roller or, for example, can measure the cylindrical shape of the entire base body. The temperature of the end face of the part. In a preferred embodiment, one, several or all temperature sensors are arranged in the measuring roller. In a particularly preferred embodiment, the temperature sensor arranged in the measuring roller is arranged in the recess. In a particularly preferred embodiment, the temperature sensors are arranged in the cutout in such a way that they can measure the surface temperature of a surface section delimiting the cutout. As an alternative to this, the temperature sensors can be arranged in such a way that they can measure the temperature of the fluid present in the recess, mostly air. As an alternative to this, the temperature sensors can be arranged in such a way that they can measure the temperature of the fluid present in the interspace, mostly air.

In a preferred embodiment, the temperature sensors measure the temperature to be measured by them by means of contacts. A resistance thermometer (PT 100 sensor) or a thermal element can be used as a temperature sensor, for example. However, it is also conceivable for the temperature sensor to measure, for example optically, for example by infrared measurement or for example by emitting a laser beam and determining the temperature from the laser beam reflected by the surface to be measured.

In a preferred embodiment, the first temperature sensor and the second temperature sensor are arranged in the same gap of the measuring roll. Particularly preferably, the first temperature sensor and the second temperature sensor are arranged in a recess in which a sensor for generating a measurement signal dependent on the applied force is also located. In a preferred embodiment, in particular in an embodiment with sensors also arranged in the recess, the first temperature sensor can be arranged such that it measures the radially outer, inwardly directed temperature of the recess. , while the second temperature sensor measures the temperature of the radially more inner, outwardly directed boundary surface of the void.

In a preferred embodiment, the first temperature sensor and the second temperature sensor are arranged substantially in the same plane, the longitudinal axis forming a normal to this plane. It has been found that, in order to improve the measurement signal generated by the sensor as a function of the applied force, it may be of interest, in particular, to measure variations in the internal temperature of the roller which occur in the radial direction. It is therefore proposed in this preferred embodiment that the first temperature sensor and the second temperature sensor are arranged in a plane with respect to which the longitudinal axis is normal. With such an arrangement, the temperature sensor primarily measures temperature changes in the radial direction. It is particularly preferred here that the first temperature sensor and the second temperature sensor are arranged such that they are arranged substantially on a line pointing from the longitudinal axis in the radial direction of the measuring roll. Especially in a preferred field of application of the present invention, that is, when determining flatness deviations in the case of processing hot metal strips, it can be expected that in the sector of the measuring roll that is in contact with the strip, particularly high temperatures account for advantage, whereas in the other sectors of the measuring roll a significantly lower temperature prevails, especially when cooling the measuring roll to protect the measuring device. Particularly in such an application, it is advantageous to arrange the first temperature sensor and the second temperature sensor substantially on a line starting from the longitudinal axis and pointing in the radial direction of the measuring roll. This ensures that the first temperature sensor and the second temperature sensor are arranged essentially in the same sector of the measuring roll and therefore the temperature change in the interior of the measuring roll can be determined precisely in this sector.

The first temperature sensor and/or the second temperature sensor can also be provided as part of a carrier of the sensor for generating the force-dependent measurement signal. For example, the first temperature sensor and/or the second temperature sensor can be inserted into a holder for a pressure sensor, which can measure the pressure acting on it from above, wherein a device is arranged at the mounting position provided for the pressure sensor. a first upper inner wedge element and a first outer wedge element, the first inner wedge element having an inner surface pointing towards the installation location of the pressure sensor and an outer surface opposite the inner surface at an angle to the inner surface, The first outer wedge element has an inner surface pointing toward the installation location of the pressure sensor, with which the outer wedge element is pressed against the outer surface of the first inner wedge element, and has an outer surface opposite the inner surface, and a second inner wedge element arranged below the installation location provided for the pressure sensor and a second outer wedge element, the second inner wedge element having an inner surface directed toward the installation location of the pressure sensor and an angle to the inner surface The outer surface opposite to the inner surface, the second outer wedge element has an inner surface pointing to the mounting position of the pressure sensor, the outer wedge element is pressed against the outer surface of the second inner wedge element with this inner surface, and having an outer surface opposite the inner surface.

In a preferred embodiment in which the first temperature sensor and/or the second temperature sensor are arranged as part of such a support, a temperature sensor can be arranged on the first inner wedge element, the first outer wedge element, the second The second inner wedge element or the second outer wedge element is located and in particular arranged in such a way that it measures the surface temperature of the surface of the wedge element assigned to the sensor.

In a preferred embodiment, a temperature element can be arranged on an outer wedge element in such a way that it measures the temperature of the surface of the wall delimiting the recess into which the carrier is inserted and against which the outer wedge element is pressed. .

In a particularly preferred embodiment, the first temperature sensor is assigned to the first outer wedge element and the second temperature sensor is assigned to the second outer wedge element. It is particularly preferred that the first temperature sensor measures the temperature of an upper surface of the wall delimiting the cavity into which the bracket is inserted and the outer wedge element is pressed against the cavity, and the second temperature sensor measures the temperature defining the cavity. The temperature of an underlying surface of the wall of the cavity into which the bracket is inserted and against which the outer wedge element is pressed.

In a preferred embodiment, the support is formed geometrically symmetrically with respect to a plane extending through the mounting position of the pressure sensor and arranged perpendicular to the direction of action of the pressure to be measured. Alignment of the geometry of the structural elements arranged above the pressure sensor and below the pressure sensor already reduces the tilting moments that occur in preloaded situations and can even completely avoid them.

As an alternative or in addition, the support is concerned with a plane extending through the mounting position of the pressure sensor and arranged perpendicularly to the direction of action of the pressure to be measured with respect to the materials used for the structural elements forming the support and/or with respect to these structural elements The surface properties of the composition are symmetrical. Tilting moments can arise not only through differences in the geometry of the structural elements arranged above and below the pressure sensor, but also between surfaces that move relative to each other above and below the pressure sensor due to different material choices or different surface properties. due to different friction forces. This can be prevented by a symmetrical configuration of the materials involved or of the surface properties.

In a preferred embodiment, a connection is provided which connects the first inner wedge element and the second inner wedge element in order to prevent a relative movement in a direction which is not the direction of action of the pressure to be measured. The tilting moment to be avoided can also be produced by the asynchronous movements of the comparable structural elements above and below the pressure sensor. This can be avoided when the structural elements involved are connected to one another. However, the connection is preferably formed in such a way that it permits a movement of the two connected structural elements in the direction of action of the pressure to be measured. In the carrier of the pressure sensor for measuring the pressure acting on it, it is preferable to try to keep the force shunt as small as possible by structural measures, that is to say that the pressure to be measured is guided away from the pressure sensor through the carrier. Portions are kept small. This is achieved by designing the structural elements elastically relative to each other in the direction of action of the pressure to be measured and by keeping the spring stiffness of the force bridge produced by the connection as low as possible.

In a further embodiment of the invention, a connection is provided which connects the first outer wedge element and the second outer wedge element in order to prevent a relative movement in a direction which is not the direction of action of the pressure to be measured. This achieves the same advantages as when connecting the inner wedge elements.

Also if the outer surface of the first inner wedge element and/or the outer surface of the second inner wedge element can be formed flat according to the mode of a flat key, in a preferred embodiment, the outer surface of the first inner wedge element and And/or the outer surface of the second inner wedge element is also designed as a conical partial surface, the longitudinal axis of which extends through the installation location of the pressure sensor. What is relevant for the tilting moment that occurs during pretensioning is the accuracy with which the geometry of the mutually facing surfaces of the individual surfaces moving relative to one another can be produced. It has been found that the production of the conical partial surface, for example by rotating the semi-finished product, can be produced more precisely than the flat surface of the flat key. This special design of the outer surface thus achieves a further reduction of the occurring tilting moments.

For the same reason, the inner surface of the first outer wedge element and/or the inner surface of the second outer wedge element is preferably formed as a partial surface of the boundary of a conical recess whose longitudinal axis passes through the installation of the pressure sensor. location extension.

In a preferred embodiment, the first inner wedge element and the second inner wedge element are part elements of an integrally produced inner sleeve. This offers advantages not only with regard to the production of the structural parts of the support but also with regard to the handling of the support when the pressure sensor is inserted.

In a preferred embodiment, the inner sleeve has a longitudinal slot between the first inner wedge element and the second inner wedge element, which extends substantially perpendicular to the direction of action of the pressure to be measured. This reduces the spring stiffness of the inner sleeve, so that the force split remains small. In addition, the inner sleeve can be formed with a small wall thickness. A small wall thickness is understood to mean, for example, a wall thickness of, for example, 0.3 mm to 5 mm for an internal diameter of typically 20 mm to 50 mm. The selected casing wall thickness can also be selected depending on the casing length, path of travel and inclination. It can also be 1/10mm at the thinnest point. In particular, the longitudinal slot can be designed such that it has almost the entire longitudinal extent of the inner sleeve and only at one or both ends remains a narrow web as a connection between the first inner wedge element and the second inner wedge element. In a preferred embodiment, the inner sleeve has two longitudinal slits. Preferably, the one or more longitudinal slots are arranged in a plane extending through the installation location of the pressure sensor and arranged perpendicularly to the direction of action of the pressure to be measured.

Also as in the case of the inner wedge element, in a preferred embodiment, as an alternative or in addition, the first outer wedge element and the second outer wedge element can be part elements or parts of an integrally manufactured outer sleeve pieces. In a preferred embodiment, the outer sleeve can likewise have at least one longitudinal slot running substantially perpendicularly to the direction of action of the pressure to be measured between the first outer wedge element and the second outer wedge element.

In a preferred embodiment, the inner surface of the first inner wedge element and/or the inner surface of the second inner wedge element is designed flat and arranged in a plane perpendicular to the direction of action of the pressure to be measured. This refinement allows the pressure sensor, which is mostly flat on its upper and lower sides, to be inserted between the inner wedge elements directly against the inner surface.

As an alternative, in a further embodiment of the invention, a first intermediate piece with a truncated spherical shape can be arranged between the first inner wedge element and the installation location of the pressure sensor and/or between the second inner wedge element A second intermediate part having a spherical segment shape can be arranged between the installation location of the pressure sensor, wherein the segmental segment forms a surface facing an inner surface of an inner wedge element and accordingly forms the associated inner surface of the inner wedge element. In this case, the truncated spherical shape preferably has the geometry of a partial area of a cylindrical body.

In a preferred embodiment of the invention, the outer surface of the first and/or second outer wedge element is a partial surface of a cylindrical body. This configuration is particularly suitable for those areas of application in which the pressure sensor has to be held by means of a holder in a borehole, for example an axial borehole, of the measuring roll.

The support can have a central rod which engages in a central bore in the structural element. Individual, floating structural elements, such as pressure sensors, compared to other structural elements such as, for example, inner wedge elements or inner sleeves, can be positioned well and precisely by means of this central rod.

In a preferred embodiment, the holder has an internal thread introduced into the first and second outer wedge elements, the longitudinal axis of which extends through the installation location of the pressure sensor and has a pressure screw screwed into this internal thread, The compression bolt can be in contact with the first inner wedge element and the second inner wedge element and it can move relative to the first and second outer wedge elements. A simple pretensioning of the bracket can be produced by means of the compression screw. Due to the angular design of the respective outer surfaces, a movement of the wedge elements relative to one another produces a movement of the outer wedge elements away from the mounting position of the pressure sensor compared to the respective inner surfaces of the corresponding inner and outer wedge elements. In this way, the carrier can be prestressed in the recess.

As an alternative, the support can have an internal thread introduced into the first and second internal wedge elements, the longitudinal axis of which extends through the installation location of the pressure sensor and has a tensioning screw which can be screwed into the internal In the thread and with its screw head, it is in contact with the first and second outer wedge elements and can move relative to the first and second inner wedge elements.

In a preferred embodiment, the measuring roller has an inner fitting which is arranged in the recess with the sensor or in another recess, wherein the inner fitting is formed in one piece and the first temperature sensor and/or the second temperature sensor are thus be arranged on the inner fitting so that it can measure the surface temperature of a surface section of the inner fitting, or the inner fitting is constructed in multiple parts, for example as in the case of the bracket described above, while the first temperature sensor and/or Or the second temperature sensor is arranged on a part of the inner part in such a way that it can measure the surface temperature of a surface section of the part or is part of the inner part and is therefore arranged in the interior of the inner part.

The method according to the invention for determining deviations from the flatness of a web-shaped article is carried out with the measuring roll according to the invention, wherein the measuring roll has at least one first sensor which is arranged first in the first recess and a second sensor which is arranged second. The second sensor is arranged in the two gaps, and the first gap and the second gap are arranged at different positions along the circumferential direction of the measuring roll, wherein the first sensor can generate a first sensor depending on the force applied to the outer surface of the measuring roll A measurement signal, and the second sensor can generate a second measurement signal that depends on the force introduced into the outer surface of the measuring roller, wherein the strip-shaped article is guided on the outer circumference of the measuring roller and at least contacts the measuring roller's part of the outer surface. In the method of the invention, a difference signal is generated from a first temperature signal generated by a first temperature sensor and a second temperature signal generated by a second temperature sensor and from a first temperature signal generated by said first sensor A measurement signal and the difference signal generate a corrected first measurement signal in an evaluation unit.

It has been shown in particular by studies that in some embodiments in which a temperature distribution is maintained inside a measuring roll which is firstly homogeneously tempered due to heat and/or cooling sources acting on it, a dependency can be generated which depends on the The sensor which measures the force measurement signal on the outer surface of the roller and is arranged in the recess in the case of preload in this preferred embodiment must determine a change in the preload of this sensor. Such a temperature distribution can arise, for example, when a hot metal strip contacts the measuring roll in an upper surface area of the measuring roll and the measuring roll is cooled from below by the atmosphere or even by cooling water. Even when the part of the measuring roll that is located near the hot strip is at a later time in the vicinity of the cooling device and is cooled due to the rotational movement of the measuring roll, in each time unit, one part of the measuring roll that is located near the hot metal strip Both are hotter than a part of the measuring roll located near the cooling device. Not only the presence of a temperature distribution per such time unit, but also the presence of the measuring roll determined by the rotational movement of the measuring roll and the alternating arrangement of individual sections of the measuring roll, now near the hot strip and now near the cooling device. Regular changes in the temperature of the respective parts may have an effect on the item for which the measurement signal is generated by the sensor in dependence on the introduced force. Studies have shown, in particular, that there is an almost linear dependence between the heating of the roller shell and the reduction in sensor pretension.

In a preferred embodiment, the flatness deviation of the metal strip is determined using the measuring roll according to the invention or the method according to the invention. Particularly preferably, the measuring roll according to the invention or the method according to the invention are used to determine flatness deviations of metal strips which, at the time of measurement, have a surface temperature above the prevailing room temperature, particularly preferably above 50° C. And particularly preferably above 300°C.

Description of drawings

1 has a cross-sectional side view of the mounting position of a pressure sensor in a partially shown measuring roller according to the section line B-B in FIG. 2;

The view of the element of Fig. 2 Fig. 1 along the section line A-A in Fig. 1;

Figure 3 is a view of the elements of Figures 1 and 2 according to the section line C-C of Figure 2;

A diagram comparable to Fig. 2 of an optional structural form of Fig. 4 stent;

Another structural form of Fig. 5 stent is a figure comparable to Fig. 1;

The view of the elements of Fig. 6 and Fig. 5 along the section line A-A of Fig. 5;

The view of the elements of Fig. 7 Fig. 5 and 6 along the section line C-C of Fig. 6;

A view comparable to Figs. 1 and 5 of another structural form of Fig. 8 stent;

Another partially cut-away side view of another structural form of the measuring roll of Fig. 9; and

FIG. 10 is a possible detailed exploded view of the structural form shown in FIG. 9 .

detailed description

FIG. 1 shows a holder 1 for a pressure sensor 2 . The bracket 1 holds the pressure sensor 2 in an axial bore 3 of a partially shown measuring roll 4 . The carrier 1 has an inner sleeve 5 with a first inner wedge element 6 arranged above the installation location provided for the pressure sensor 2 , the first inner wedge element 6 having an installation location facing the pressure sensor 2 An inner surface 7 and an outer surface 8 opposite the inner surface 7 at an angle to the inner surface 7 . In addition, the inner sleeve 5 also has a second inner wedge element 9 arranged below the installation location provided for the pressure sensor 2, which has an inner surface 10 facing the installation location of the pressure sensor 2 and an inner The surface 10 forms an angled outer surface 11 opposite the inner surface 10 .

In addition, the support 1 also has an outer sleeve 12 . The outer sleeve 12 has a first outer wedge element 13 with an inner surface 14 facing the installation location of the pressure sensor and an outer surface opposite the inner surface 14 at an angle to the inner surface 14 15. In addition, the outer sleeve 12 also has a second outer wedge element 16, which has an inner surface 17 facing the mounting position of the pressure sensor 2, with which the outer wedge element 16 is pressed against the second inner wedge element. 9 on the outer surface. In addition, the outer wedge element 16 also has an outer surface 18 opposite the inner surface 17 .

A compression screw 19 with an external thread is screwed into an internal thread 20 introduced into the outer sleeve. The screw-in depth of the compression bolt 19 determines the relative position of the inner sleeve 5 relative to the outer sleeve 12 and thus determines the pretension of the bracket 1 in the axial bore 3 .

As can be seen from FIG. 2 , the inner sleeve 5 and the outer sleeve 12 have slots 21 or 22 which reduce the spring stiffness of the inner sleeve 5 or the outer sleeve 12 and ensure that the force distribution is kept low. The pressure to be determined, which acts in the direction of action of the arrow D, is thus well introduced into the pressure sensor 2 . The outer sleeve 12 and the inner sleeve 5 can be produced in a first machining step by turning by machining. In particular, the form tolerances of the inner surfaces 14 , 17 of the outer sleeve 12 and the outer surfaces 8 , 11 of the inner sleeve 12 can thus be produced particularly precisely, and in this way a moment-free tilting of the inner sleeve 5 relative to the outer sleeve 12 can be achieved. sports. In subsequent processing steps, the regions of the inner sleeve 5 which are arranged laterally in the view in FIG. 2 can be further narrowed in order to reduce the wall thickness of the inner sleeve 5 at the sides. This results in lateral free spaces 23 , 24 between inner sleeve 5 and outer sleeve 12 in the illustration in FIG. 2 , which facilitate the introduction of force into pressure sensor 2 and further reduce force shunts.

FIG. 3 shows a plan view of the pressure sensor 2 . The cable arrangement leading to the pressure sensor 2 can be clearly seen in this view. A first cable 25 leads to the shown pressure sensor 2 , while a further cable 26 leads to a further, not shown, pressure sensor which is arranged in the same axial borehole 3 .

1 to 3 show a first temperature sensor 40 which is incorporated in the first outer wedge element 13 and a second temperature sensor 41 which is incorporated in the second outer wedge element 16 . The temperature sensors are arranged in such a way that they can measure the surface temperature of the surface section delimiting the recess above and below.

The further embodiment of the support shown in FIG. 4 basically has the same structure as the support shown in FIGS. 1 to 3 . Identical structural elements have reference numerals with the value 100 added. However, recesses 126 are provided in the inner sleeve 105 of this second embodiment, which further reduce the lateral wall thickness of the inner sleeve 105 , which in turn leads to a lower spring stiffness and a smaller force distribution. In the embodiment shown in FIG. 4 , a first temperature sensor 140 and a second temperature sensor 141 are also provided.

Another embodiment of the invention is shown in FIGS. 5 to 7 , which differs from the embodiment shown in FIGS. 1 to 3 in that an arrangement between the inner sleeve 205 and the pressure sensor 202 The intermediate pieces 227 and 228 have a spherical shape. In addition, the structural elements shown correspond to those of the elements shown in FIGS. 1 to 3 . They are denoted with reference numerals to which the value 200 is added. In the embodiments shown in FIGS. 5 to 7 , a first temperature sensor 240 and a second temperature sensor 241 are also provided.

FIG. 8 shows a bracket 301 comparable to that shown in FIG. 1 . This bracket differs from the bracket shown in FIG. 1 in the different orientations of the inner surfaces 308 , 311 and the corresponding outer surfaces 314 , 317 and the tension of the inner thread 330 screwed into the inner sleeve 305 . Tighten bolt 329. The screw-in depth of tensioning bolt 329 into internal thread 330 determines the position of inner sleeve 305 relative to outer sleeve 312 and thus the pretensioning of support 301 in axial bore 303 of measuring roller 304 . The same structural elements are denoted by reference numerals with the value 300 added. In the embodiment shown in FIG. 8 , a first temperature sensor 340 and a second temperature sensor 341 are also provided.

In the embodiment shown in FIG. 9 , the measuring roller 401 has a journal 402 . Measuring roller 401 has a metal casing 444 shrink-fitted onto the roller body and axially parallel bores 403 arranged sealingly underneath, from which transverse channels 404 exit close at their end sides and lead to A central cable channel 405 . These boreholes are closed with a cover plate 406 or respectively with cover plates separately and contain sensors 407 from which a cable 408 is led out in each case through the borehole 403 , the transverse channel 404 and the central channel 405 . Wedge 414 pretensions sensor 407 . The embodiment shown in FIG. 9 shows the arrangement of the first temperature sensor 440 at a first radial distance R1 relative to the longitudinal axis and the arrangement of the second temperature sensor 441 on the end face of the measuring roll at a first radial distance from the longitudinal axis. Possibility of setting R1 differently at the second distance R2.

As shown in FIG. 10 , the bore 403 can also communicate with a longitudinal groove 421 , in which the lower part of a floating pretensioning wedge 414 is guided and whose oblique surfaces cooperate with the oblique surfaces of the housing 423 . When the housing 423 is radially prestressed with the pretensioning wedge 414 guided in the longitudinal groove 421 , it is ensured that the housing 423 cannot be twisted in the bore 403 . In the shown measuring roller 401, the sensor 407 is arranged in a four-part housing 423 which has parallel clamping surfaces 424, 425 opposite one another and two end plates 426, 427. The first temperature sensor 442 shown in FIG. 10 is arranged in a separate recess, while the second temperature sensor 443 is arranged in the borehole 403 .

Claims (9)

1., for determining the measurement rolling of the flatness deviation of banding article, wherein said measurement rolling has one and indulges Axis and at least one sensor being arranged in the space in described measurement rolling, this sensor can produce one The individual measurement signal depending on the power being incorporated on the outer surface measuring rolling, it is characterised in that there is an edge The first temperature sensor that radial direction is arranged away from longitudinal axis with first distance and one are radially With one from the first the second temperature sensor arranged away from longitudinal axis apart from different second distances.

The most according to claim 1 measure rolling, it is characterised in that have one the most columnar, Overall matrix, described space is incorporated in described matrix.

The most according to claim 1 and 2 measurement is rolled, it is characterised in that the first and/or second temperature passes Sensor is resistance thermometer or temperature-sensitive element.

The most according to claim 1 and 2 measure rolling, it is characterised in that the first temperature sensor and the Two temperature sensors are substantially provided in approximately the same plane, and described longitudinal axis constitutes one relative to this plane Normal.

The most according to claim 4 measurement is rolled, it is characterised in that the first temperature sensor and the second temperature Degree sensor is substantially provided in one from longitudinal axis along measuring along the line that the radial direction rolled is pointed to.

The most according to claim 1 and 2 measure rolling, it is characterised in that there is one and be arranged on and have Inner assembly in the space of sensor or in an other space, wherein this inner assembly is configured to overall , and the first temperature sensor and/or the second temperature sensor arranged so on this inner assembly, make Obtain the surface temperature that temperature sensor can measure a surface segment of this inner assembly, or this inner assembly It is configured to manifold, and the first temperature sensor and/or the second temperature sensor are so to arrange this interior In one part of assembly parts so that temperature sensor can measure the surface of a surface segment of this part Temperature or a part of this inner assembly and be therefore arranged in the inside of this inner assembly.

The most according to claim 1 and 2 measurement is rolled, it is characterised in that the first and/or second temperature passes Sensor is arranged in a space and arranged so so that temperature sensor can be measured one and be defined institute State the temperature of the surface segment in space.

The most according to claim 3 measurement is rolled, it is characterised in that use PT100 as resistance thermometer Sensor.

9. for utilizing the flatness determining banding article according to the measurement rolling one of claim 1 to 8 Suo Shu The method of deviation, wherein said measurement rolling have at least one first sensor being arranged in the first space and At least one the second sensor being arranged in Second gap, and the first space and Second gap are along measuring rolling Be circumferentially disposed at different positions, wherein first sensor can produce one and depends on and be incorporated into survey First measurement signal of the power on the outer surface of amount rolling, and the second sensor can produce one and depend on introducing Second measurement signal of the power on the outer surface measuring rolling, wherein banding article are on the excircle measuring rolling At least one part of the outer surface guided and roll at this contact measurement, is passed by the first temperature from one The first temperature signal and second temperature signal produced by the second temperature sensor that sensor produces produce one Individual difference signal and one assessment unit in from one by described first sensor produce first measurement signal A first measurement signal revised is produced with described difference signal.