WO2017140928A1 - Portable device for measuring the surface of metal rollers and measuring method used with same - Google Patents

Portable device for measuring the surface of metal rollers and measuring method used with same Download PDF

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Publication number
WO2017140928A1
WO2017140928A1 PCT/ES2017/070049 ES2017070049W WO2017140928A1 WO 2017140928 A1 WO2017140928 A1 WO 2017140928A1 ES 2017070049 W ES2017070049 W ES 2017070049W WO 2017140928 A1 WO2017140928 A1 WO 2017140928A1
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WO
WIPO (PCT)
Prior art keywords
portable device
measuring
lamp
metal rollers
camera
Prior art date
Application number
PCT/ES2017/070049
Other languages
Spanish (es)
French (fr)
Inventor
Sepp Mathias WOLFGRUBER
Joaquin Angel GARCIA MARIN
Alain DIONNE HAMEL
Original Assignee
Fundiciones Balaguer, S.A.
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.)
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Publication date
Application filed by Fundiciones Balaguer, S.A. filed Critical Fundiciones Balaguer, S.A.
Publication of WO2017140928A1 publication Critical patent/WO2017140928A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

Definitions

  • the present invention relates to a portable device for measuring the surface of metal rollers and the measurement procedure used therewith.
  • the object of the invention is to provide the user with a portable, lightweight, safe and easy-to-use measuring device, capable of accurately measuring the surface of the rollers by determining the shape, angles and radius of the grooves recorded by a system of 3D vision reading that prevents the diffusion of light on the material when capturing the image.
  • the device is portable and lightweight allows the user to determine the degree of wear of any roller, regardless of where it is installed, since the measurement can be performed accurately and with full guarantee on site, drastically reducing the time and effort invested, not having to disassemble the machine roller.
  • rollers are used for a wide variety of applications being essential elements for processes such as grinding. During use, the roller wears out, softening the shape of its stretch marks and offering its lower grinding performance.
  • rollers Depending on the sector and process in which they are to be used, the parameters that characterize the rollers, such as width, pitch, depth and angles of the striations or engravings of their outer surface, will vary considerably.
  • a device known as a profile meter which reproduces the shape of the roller grooves when a needle or reader in direct contact with the surface of the stretch marks, runs them reproducing their shape.
  • This process does not allow to obtain the shape of the radius and depth of each stretch mark exactly, since the needle does not reach the depth of the stretch marks. In addition, it is a slow measurement process, since, in order to avoid reading errors, the speed of movement of the needle on the surface of the roller must be moderate.
  • JPH09323320 Another known measurement method is that disclosed by patent document number JPH09323320, which describes a device and a measurement method capable of determining the wear of the grooves of the rollers of any size.
  • the measurement is carried out on a mobile table, which includes an axis, rotating means, measuring cables and a frame equipped with a camera capable of obtaining black and white images.
  • the movable table moves axially towards the frame, while rotating the shaft to obtain the shape of the roller grooves continuously and efficiently, without damaging them.
  • the camera obtains the moving images that will later be displayed on a computer screen along with the data obtained by the measurement cables.
  • the problem described above is solved by using the portable device for measuring the surface of the metal rollers of the present invention, by using 3D vision from a camera that captures images with great precision, in addition the device prevents the diffusion of the light on the surface of the metallic material.
  • the portable device for measuring the surface of metal rollers is composed of a lamp that emits a beam of light or beam, a camera with a lens, a battery that feeds at least the lamp and a linear reference element , all of which are arranged inside a housing.
  • the device has a tablet ⁇ tableten its English meaning) connected to the lamp, whose screen will show the results of the measurement made, this tablet can be integrated into the front of the housing, specifically through an opening located in the housing where it would be integrated, or in an additional base to the housing that included movable means for the adequate inclination of the screen, allowing in this second embodiment an independent movement of the tablet with respect to the position of the housing.
  • the housing of the portable device has at least one opening, preferably in the base or on the side of the housing, where the linear reference element is located. Through the opening, the partial opening of the light and the reading are made.
  • the device in the opening of the housing through which the reading is made, the device has a linear reference element, specifically a calibrated plate with an edge totally straight that limits the captured image, creating a perfectly rectilinear shadow, on which the profile is evaluated.
  • the linear reference element creates a straight reference line on which the reading of the roller grooves is made, serving as a reference for the reading of the geometry of the grooves.
  • the linear reference element is composed of a partially painted black glass that generates a completely straight line to limit the image captured by generating the necessary shadow, this being also a means of isolation against dust and dirt, when the housing opening covered by glass.
  • the high resolution camera is equipped with a lens, which allows it to capture light.
  • the lamp and the camera are arranged in such a way that the lamp emits a beam of light towards the opening located in the base of the housing while the camera receives this light through the mentioned opening.
  • the lamp and the camera are arranged at a minimum angle with respect to the vertical, allowing the capture of light and shadow representing the profile of the stretch marks when lighting the metal surface with the maximum intensity of light without producing diffusion on said metal surface.
  • the inclination with which the lamp and camera on the device are arranged possible to form an angle to the vertical, at each side, between 10 and 80 and to, thus, the camera can capture an image of the surface of quality roller.
  • the camera lens and lamp are telecentric, instead of conical as they are commonly used, prevents deformation of the shadow of the image, that is, the image does not vary in size depending on the distance at which it is Look at what facilitates the analysis.
  • the lamp emits a straight beam of light with excellent lighting stability, the regulation of the light intensity being very precise.
  • the lamp emits a red beam of light, which makes it possible to carry out measurements in broad daylight, without the captured image being affected, since the red beam prevents interference from other light sources of different spectrum, when a red light filter is used on the camera lens.
  • the device does not require connection to the mains for operation, by presenting a battery that powers at least the lamp and guarantees its proper operation.
  • the tablet also has its own battery.
  • the device may have an additional battery to power the tablet and provide it with greater autonomy.
  • the tablet includes an analysis software that receives the image captured by the camera and allows obtaining the technical parameters necessary to successfully perform the measurement.
  • the software determines the pitch, the crest, the alpha and beta angles, the radius and the height or depth of the groove.
  • the portable device includes leveling means in its base that allow it to be positioned on the surface of the roller parallel to its axis, thus, the device is positioned stably and aligned with the axis of the roller, such that the opening in the base of the housing, through which the image is captured, faces the surface of the roller and parallel to its axis. Additionally, these leveling means facilitate the movement of the device on its surface.
  • the device being portable and equipped with leveling means allows to obtain with total guarantee and practicality the necessary parameters to calculate the degree of wear of the striations of the metal rollers, without the need to uninstall them for transfer to a measuring bench. That is, the device of the invention allows the measurement to be carried out directly in the place where the metal roller is installed, drastically reducing the effort and time invested to perform this type of measurement.
  • the measurement procedure used with the portable device of the invention is integrated by the steps described below:
  • the operator places the portable device parallel to the surface of the roller and proceeds to enter the code of the roller and / or the reference pattern of the parameters to be measured so that the software installed in the tablet recovers the reference measurements of the roller, previously stored.
  • the operator orders the measurement by activating the light emitted by a beam that illuminates the surface of the roller and then proceeds to capture the image using the camera.
  • the device instantly displays the measurement data obtained and its comparison with the selected roller pattern on the tablet screen, generating a data file that is stored in the device software.
  • the device will activate an alert when the software detects that the comparison between the measurements made and the theoretical or reference data entered by the user exceeds previously defined tolerances or ranges.
  • the software generates a list that includes all the information related to the result of the measurement, including the captured image, which can be sent by the operator to a central computer via WiFi or using a USB cable.
  • Figure 1 Shows a profile view of the portable device object of the invention.
  • Figure 2. Shows a second perspective view of the device shown in Figure 1.
  • Figure 3. Shows a representation corresponding to a perspective view of the device object of the invention, where the frame of the housing is shown, but not the housing.
  • Figure 4. Shows a perspective view of the same device shown in Figure 3 without housing.
  • Figure 5. Shows a view of the opening of the base of the housing of the invention.
  • the device (1) of the present invention is composed of a housing (2), leveling means (3) and an additional base (4) where Integrate a tablet (5).
  • the invention is represented without the outer casing that covers it, so that we can observe the lamp (6), a high resolution camera with a lens (7), a plate calibrated as a linear element reference (8) and a battery (9) that powers the lamp (6).
  • the camera (7) is equipped with a high resolution lens, preferably one that allows obtaining at least one measurement of the surface for every 3 micrometers, to capture the image of the metal roller with great precision when it is illuminated by the beam of light emitted by the lamp (6).
  • Both the camera (7) and the lamp (6) are arranged facing each other and have the same angle with respect to the vertical such that it allows the image to be captured with maximum light intensity without reflection on the roller. metal.
  • the tablet (5) is integrated in an additional base (4) to the housing (2) that is attached to it by means of mobile coupling means (10), and enables the tilting of the tablet (5) so independent of the position of the housing (2) in order to increase reading comfort by the user.
  • the tablet software (5) stores the technical parameters or reference standards of each roller necessary to determine its actual degree of wear.
  • the leveling means (3) are obtained in the form of an inverted "v", allowing the device (1) to be positioned parallel to the axis of the metal roller and allowing its displacement along its surface.
  • Figure 5 shows the opening in the base (1 1) of the device housing (1), where the calibrated plate (8) below the lamp (6) is shown, which partially blocks the light and The reading socket. Also in this figure the camera (7) is observed, so that both the lamp (6) and the camera (7) emit their work beam through the side opening (1 1).
  • the operator activates the lamp (6) and the device captures the image through the camera (7), sending the information to the tablet (5), which shows it on its screen with the measurement data obtained, a comparison with the selected roller pattern, a list of validated rollers, a graph of the 3D point cloud with the shape of the theoretical and analyzed groove, generating a data file that is stored in the device software.

Abstract

The invention relates to a portable device for measuring the surface of metal rollers, which comprises a lamp and a camera with a lens, which are housed in a casing, and a tablet connected to the camera, wherein the casing of the portable device has an opening in the base, by means of which opening a reading is taken, the lamp and the camera being disposed such that both emit a beam towards said opening in the base of the casing, the lamp and the camera being disposed at a minimal angle with respect to the vertical. The invention also relates to the measuring method used with the described device.

Description

DISPOSITIVO PORTATIL PARA LA MEDICION DE LA SUPERFICIE DE RODILLOS METÁLICOS Y PROCEDIMIENTO DE MEDICIÓN EMPLEADO CON EL MISMO.  PORTABLE DEVICE FOR MEASURING THE SURFACE OF METAL ROLLERS AND MEASUREMENT PROCEDURE USED WITH THE SAME.
D E S C R I P C I Ó N D E S C R I P C I Ó N
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La presente invención se refiere a un dispositivo portátil para la medición de la superficie de rodillos metálicos y el procedimiento de medición empleado con el mismo. The present invention relates to a portable device for measuring the surface of metal rollers and the measurement procedure used therewith.
El objeto de la invención es proporcionar al usuario un dispositivo de medición portátil, ligero, seguro y de fácil manejo, capaz de medir con precisión la superficie de los rodillos determinando la forma, los ángulos y el radio de las estrías grabadas mediante un sistema de lectura de visión 3D que evita la difusión de la luz sobre el material al realizar la captura de la imagen. The object of the invention is to provide the user with a portable, lightweight, safe and easy-to-use measuring device, capable of accurately measuring the surface of the rollers by determining the shape, angles and radius of the grooves recorded by a system of 3D vision reading that prevents the diffusion of light on the material when capturing the image.
Ventajosamente, que el dispositivo sea portátil y ligero permite al usuario determinar el grado de desgaste de cualquier rodillo, independientemente de donde esté instalado, ya que la medición se puede realizar de forma precisa y con total garantía in situ, reduciendo de forma drástica el tiempo y esfuerzo invertidos, al no tener que desmontar el rodillo de la máquina. Advantageously, that the device is portable and lightweight allows the user to determine the degree of wear of any roller, regardless of where it is installed, since the measurement can be performed accurately and with full guarantee on site, drastically reducing the time and effort invested, not having to disassemble the machine roller.
ANTECEDENTES DE LA INVENCION BACKGROUND OF THE INVENTION
Los rodillos se utilizan para una gran variedad de aplicaciones siendo elementos esenciales para procesos como la molienda. Durante su uso, el rodillo se desgasta, suavizando la forma de sus estrías y ofreciendo su rendimiento menor en la molienda. The rollers are used for a wide variety of applications being essential elements for processes such as grinding. During use, the roller wears out, softening the shape of its stretch marks and offering its lower grinding performance.
En función del sector y proceso en el que se vayan a utilizar, los parámetros que caracterizan a los rodillos, tales como ancho, paso, profundidad y ángulos de las estrías o grabados de su superficie exterior, variarán considerablemente. Depending on the sector and process in which they are to be used, the parameters that characterize the rollers, such as width, pitch, depth and angles of the striations or engravings of their outer surface, will vary considerably.
Por ello, es vital confirmar con total garantía y eficacia que las estrías de los rodillos cumplen los requerimientos técnicos deseados en función de su aplicación final, para así garantizar su correcto funcionamiento. Asimismo, también es muy importante conocer con exactitud el estado de las estrías de los rodillos que están siendo utilizados para determinar su desgaste y, en consecuencia, su vida útil. Therefore, it is vital to confirm with total guarantee and efficiency that the stretch marks of the rollers meet the desired technical requirements depending on their final application, in order to guarantee their correct operation. Likewise, it is also very important to know exactly the state of the grooves of the rollers that are being used to determine their wear and, consequently, their useful life.
Actualmente, para realizar una medición de los parámetros que definen un rodillo, es decir para determinar la forma y desgaste de las estrías de los rodillos, se utiliza un dispositivo conocido como perfilometro, que reproduce la forma de las estrías del rodillos cuando una aguja o lector en contacto directo con la superficie de las estrías, las recorre reproduciendo su forma. Currently, to make a measurement of the parameters that define a roller, that is to determine the shape and wear of the roller grooves, a device known as a profile meter is used, which reproduces the shape of the roller grooves when a needle or reader in direct contact with the surface of the stretch marks, runs them reproducing their shape.
Este proceso no permite obtener la forma del radio y profundidad de cada estría con exactitud, ya que la aguja no alcanza la profundidad de las estrías. Además, se trata de un proceso de medición lento, ya que, para evitar errores de lectura, la velocidad de desplazamiento de la aguja sobre la superficie del rodillo debe ser moderada. This process does not allow to obtain the shape of the radius and depth of each stretch mark exactly, since the needle does not reach the depth of the stretch marks. In addition, it is a slow measurement process, since, in order to avoid reading errors, the speed of movement of the needle on the surface of the roller must be moderate.
Otro método de medición conocido es el divulgado por el documento de patente número JPH09323320, que describe un dispositivo y un método de medición capaz de determinar el desgaste de las estrías de los rodillos de cualquier tamaño. La medición se realiza en una mesa móvil, que comprende un eje, medios de rotación, cables de medición y un bastidor dotado de una cámara capaz de obtener imágenes en blanco y negro. Another known measurement method is that disclosed by patent document number JPH09323320, which describes a device and a measurement method capable of determining the wear of the grooves of the rollers of any size. The measurement is carried out on a mobile table, which includes an axis, rotating means, measuring cables and a frame equipped with a camera capable of obtaining black and white images.
Para realizar la medición es necesario introducir el rodillo en el eje de la mesa móvil y enrollar los cables de medición en las estrías del rodillo con cierta tensión. Seguidamente, la mesa móvil se desplaza axialmente hacia el bastidor, mientras gira el eje para obtener la forma de las estrías del rodillo de forma continua y eficaz, sin dañarlas. Al pasar la mesa móvil por el bastidor a la vez que gira el eje, la cámara obtiene las imágenes en movimiento que posteriormente se visualizarán en la pantalla de un ordenador junto con los datos obtenidos por los cables de medición. To carry out the measurement it is necessary to insert the roller in the axis of the mobile table and wind the measuring cables in the grooves of the roller with some tension. Next, the movable table moves axially towards the frame, while rotating the shaft to obtain the shape of the roller grooves continuously and efficiently, without damaging them. When the mobile table passes through the frame while the axis rotates, the camera obtains the moving images that will later be displayed on a computer screen along with the data obtained by the measurement cables.
Los métodos de medición descritos, utilizan dispositivos de gran envergadura y complejidad que además no determinan la forma de las estrías con precisión. The measurement methods described, use large and complex devices that also do not determine the shape of the stretch marks precisely.
En el estado de la técnica también son conocidos sistemas de lectura que generan imágenes tridimensionales a partir de imágenes planas para determinar la forma de materiales plásticos. No obstante, hasta la fecha este tipo de sistemas de lectura tridimensional no se ha aplicado sobre superficies metálicas, ya que la captura de imagen implica la difusión del haz de luz que ilumina el material metálico, dificultando la visualización e interpretación de los datos recogidos. In the state of the art, reading systems that generate three-dimensional images from flat images to determine the shape of plastic materials are also known. However, to date, this type of three-dimensional reading system has not been applied to metal surfaces, since image capture implies the diffusion of the light beam that illuminates the metallic material, making it difficult to visualize and interpret the collected data.
Por todo lo anterior, no se conoce en el estado de la técnica ningún dispositivo portátil, económico, ligero, seguro y de gran precisión capaz de medir los parámetros que caracterizan las estrías de los rodillos metálicos. For all the above, no portable, economical, lightweight, safe and high-precision device capable of measuring the parameters that characterize the striations of the metal rollers is known in the state of the art.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Mediante el dispositivo portátil para la medición de la superficie de los rodillos metálicos de la presente invención se resuelve la problemática descrita anteriormente, al utilizar la visión 3D a partir de una cámara que captura imágenes con gran precisión, además el dispositivo evita la difusión de la luz sobre la superficie del material metálico. The problem described above is solved by using the portable device for measuring the surface of the metal rollers of the present invention, by using 3D vision from a camera that captures images with great precision, in addition the device prevents the diffusion of the light on the surface of the metallic material.
Así, el dispositivo portátil para la medición de la superficie de rodillos metálicos está integrado por una lámpara que emite un haz de luz o rayo, una cámara con lente, una batería que alimenta, al menos, a la lámpara y un elemento lineal de referencia, estando todos ellos dispuestos en el interior de una carcasa. Thus, the portable device for measuring the surface of metal rollers is composed of a lamp that emits a beam of light or beam, a camera with a lens, a battery that feeds at least the lamp and a linear reference element , all of which are arranged inside a housing.
El dispositivo presenta una tableta {tableten su acepción inglesa) conectada a la lámpara, en cuya pantalla se visualizarán los resultados de la medición realizada, esta tableta se puede integrar en el frontal de la carcasa, concretamente a través de una abertura situada en la carcasa donde quedaría integrada, o en una base adicional a la carcasa que incluyera medios móviles para la adecuada inclinación de la pantalla, posibilitando en esta segunda realización un movimiento independiente de la tableta respecto de la posición de la carcasa. La carcasa del dispositivo portátil presenta, al menos, una abertura, preferentemente en la base o en el lateral de la carcasa, donde se sitúa el elemento lineal de referencia. A través de la abertura se realiza el boqueo parcial de la luz y la toma de lectura. The device has a tablet {tableten its English meaning) connected to the lamp, whose screen will show the results of the measurement made, this tablet can be integrated into the front of the housing, specifically through an opening located in the housing where it would be integrated, or in an additional base to the housing that included movable means for the adequate inclination of the screen, allowing in this second embodiment an independent movement of the tablet with respect to the position of the housing. The housing of the portable device has at least one opening, preferably in the base or on the side of the housing, where the linear reference element is located. Through the opening, the partial opening of the light and the reading are made.
Así, en la abertura de la carcasa a través de la cual se realiza la toma de lecturas, el dispositivo presenta un elemento lineal de referencia, concretamente una placa calibrada con un borde totalmente recto que limita la imagen capturada, creando una sombra perfectamente rectilínea, sobre la que se evalúa el perfil. Así, el elemento lineal de referencia crea una línea recta de referencia sobre la que se realiza la lectura de las estrías del rodillo, sirviendo como referencia para la lectura de la geometría de las estrías. Thus, in the opening of the housing through which the reading is made, the device has a linear reference element, specifically a calibrated plate with an edge totally straight that limits the captured image, creating a perfectly rectilinear shadow, on which the profile is evaluated. Thus, the linear reference element creates a straight reference line on which the reading of the roller grooves is made, serving as a reference for the reading of the geometry of the grooves.
Opcionalmente, el elemento lineal de referencia está integrado por un cristal parcialmente pintado de negro que genera una línea totalmente recta para limitar la imagen capturada al generar la sombra necesaria, siendo éste además un medio de aislamiento contra el polvo y la suciedad, al quedar la abertura de la carcasa cubierta por el cristal. Optionally, the linear reference element is composed of a partially painted black glass that generates a completely straight line to limit the image captured by generating the necessary shadow, this being also a means of isolation against dust and dirt, when the housing opening covered by glass.
La cámara de alta resolución está dotada de una lente, que le permite capturar la luz. The high resolution camera is equipped with a lens, which allows it to capture light.
La lámpara y la cámara quedan dispuestos de manera tal que la lámpara emite un haz de luz hacia la abertura situada en la base de la carcasa mientras que la cámara recibe esta luz a través de la abertura mencionada. Así, la lámpara y la cámara se disponen enfrentados en un ángulo mínimo respecto a la vertical, permitiendo realizar la captura de la luz y la sombra representante del perfil de las estrías al alumbrar la superficie metálica con la máxima intensidad de luz sin que se produzca difusión sobre dicha superficie metálica. Concretamente, la inclinación con la que se disponen la lámpara y la cámara en el dispositivo permiten formar un ángulo respecto la vertical, a cada lado, de entre 10e y 80e para que, así, la cámara pueda capturar una imagen de la superficie del rodillo de calidad. The lamp and the camera are arranged in such a way that the lamp emits a beam of light towards the opening located in the base of the housing while the camera receives this light through the mentioned opening. Thus, the lamp and the camera are arranged at a minimum angle with respect to the vertical, allowing the capture of light and shadow representing the profile of the stretch marks when lighting the metal surface with the maximum intensity of light without producing diffusion on said metal surface. Specifically, the inclination with which the lamp and camera on the device are arranged possible to form an angle to the vertical, at each side, between 10 and 80 and to, thus, the camera can capture an image of the surface of quality roller.
Ventajosamente, que la lente de la cámara y la lámpara sean telecéntricas, en lugar de cónicas como se utilizan habitualmente, evita la deformación de la sombra de la imagen, es decir la imagen no varía su tamaño en función de la distancia a la que se observa lo que facilita el análisis. Por otro lado, la lámpara emite un haz de luz recta con excelente estabilidad de iluminación, siendo la regulación de la intensidad luminosa muy precisa. Advantageously, that the camera lens and lamp are telecentric, instead of conical as they are commonly used, prevents deformation of the shadow of the image, that is, the image does not vary in size depending on the distance at which it is Look at what facilitates the analysis. On the other hand, the lamp emits a straight beam of light with excellent lighting stability, the regulation of the light intensity being very precise.
Opcionalmente, la lámpara emite un haz de luz de color rojo, lo que posibilita la realización de medidas en pleno día, sin que la imagen capturada se vea afectada, ya que el haz rojo evita la interferencia de otras fuentes de luz de diferente espectro, cuando se utiliza un filtro de luz roja en la lente de la cámara. Optionally, the lamp emits a red beam of light, which makes it possible to carry out measurements in broad daylight, without the captured image being affected, since the red beam prevents interference from other light sources of different spectrum, when a red light filter is used on the camera lens.
El dispositivo no requiere de conexión a la red eléctrica para su funcionamiento, al presentar una batería que alimenta, al menos, la lámpara y garantiza su correcto funcionamiento. Por otro lado, la tableta también dispone de su propia batería. The device does not require connection to the mains for operation, by presenting a battery that powers at least the lamp and guarantees its proper operation. By On the other hand, the tablet also has its own battery.
Opcionalmente, el dispositivo puede presentar una batería adicional para alimentar la tableta y dotarla de mayor autonomía. Optionally, the device may have an additional battery to power the tablet and provide it with greater autonomy.
Asimismo, la tableta incluye un software de análisis que recibe la imagen capturada por la cámara y permite obtener los parámetros técnicos necesarios para realizar con éxito la medición. Así, a partir de la imagen capturada el software determina el paso, la cresta, los ángulos alfa y beta, el radio y la altura o profundidad de la estría. Also, the tablet includes an analysis software that receives the image captured by the camera and allows obtaining the technical parameters necessary to successfully perform the measurement. Thus, from the captured image the software determines the pitch, the crest, the alpha and beta angles, the radius and the height or depth of the groove.
El dispositivo portátil incluye medios niveladores en su base que permiten posicionarlo en la superficie del rodillo de forma paralela a su eje, así, se posiciona el dispositivo de forma estable y alineada con el eje del rodillo, de manera tal que la abertura en la base de la carcasa, a través de la que se captura la imagen, queda enfrentada a la superficie del rodillo y en paralelo a su eje. Adicionalmente, estos medios niveladores facilitan el desplazamiento del dispositivo sobre su superficie. The portable device includes leveling means in its base that allow it to be positioned on the surface of the roller parallel to its axis, thus, the device is positioned stably and aligned with the axis of the roller, such that the opening in the base of the housing, through which the image is captured, faces the surface of the roller and parallel to its axis. Additionally, these leveling means facilitate the movement of the device on its surface.
Ventajosamente, que el dispositivo sea portátil y esté dotado de medios niveladores permite obtener con total garantía y practicidad los parámetros necesarios para calcular el grado de desgaste de las estrías de los rodillos metálicos, sin necesidad de desinstalarlos para su traslado a un banco de medición. Es decir, el dispositivo de la invención permite realizar la medición directamente en el lugar en el que el rodillo metálico esté instalado, reduciendo drásticamente el esfuerzo y tiempo invertido para realizar este tipo de mediciones. El procedimiento de medición empelado con el dispositivo portátil de la invención está integrado por las etapas que a continuación se describen: Advantageously, the device being portable and equipped with leveling means allows to obtain with total guarantee and practicality the necessary parameters to calculate the degree of wear of the striations of the metal rollers, without the need to uninstall them for transfer to a measuring bench. That is, the device of the invention allows the measurement to be carried out directly in the place where the metal roller is installed, drastically reducing the effort and time invested to perform this type of measurement. The measurement procedure used with the portable device of the invention is integrated by the steps described below:
En primer lugar, es necesario aplicar sobre la superficie del rodillo metálico una solución de tiza o tinta líquida para rellenar los poros del material metálico, suavizando de esta manera su rugosidad y eliminando los brillos o reflejos de éste. De esta forma, se evita la difusión de luz en distintos ángulos que podrían tener lugar cuando el haz de la lámpara ilumina los poros del rodillo y que alterarían la medida. First of all, it is necessary to apply a solution of chalk or liquid ink on the surface of the metal roller to fill the pores of the metallic material, thus softening its roughness and eliminating glare or reflections thereof. In this way, the diffusion of light at different angles that could take place when the lamp beam illuminates the pores of the roller and that would alter the measurement is avoided.
A continuación, el operario coloca el dispositivo portátil en paralelo a la superficie del rodillo y procede a introducir el código del rodillo y/o el patrón de referencia de los parámetros a medir para que el software instalado en la tableta recupere las medidas de referencia del rodillo, almacenadas previamente. Next, the operator places the portable device parallel to the surface of the roller and proceeds to enter the code of the roller and / or the reference pattern of the parameters to be measured so that the software installed in the tablet recovers the reference measurements of the roller, previously stored.
Seguidamente, el operario ordena la medición mediante la activación de la luz que emite un haz que ilumina la superficie del rodillo y, seguidamente, procede a la captura de la imagen mediante la cámara. Next, the operator orders the measurement by activating the light emitted by a beam that illuminates the surface of the roller and then proceeds to capture the image using the camera.
El dispositivo muestra de manera instantánea en la pantalla de la tableta los datos de la medición obtenidos y su comparativa con el patrón de rodillo seleccionado, generando un fichero de datos que se almacena en el software del dispositivo. The device instantly displays the measurement data obtained and its comparison with the selected roller pattern on the tablet screen, generating a data file that is stored in the device software.
Adicionalmente, el dispositivo activará una alerta cuando el software detecte que la comparativa entre las mediciones realizadas y los datos teóricos o de referencia introducidos por el usuario sobrepasa unas tolerancias o rangos definidos previamente. Additionally, the device will activate an alert when the software detects that the comparison between the measurements made and the theoretical or reference data entered by the user exceeds previously defined tolerances or ranges.
Finalmente, el software genera un listado que incluye toda la información relativa al resultado de la medición realizada, incluyendo la imagen capturada, que podrá ser enviada por el operario a un ordenador central vía WiFi o utilizando un cable USB. DESCRIPCIÓN DE LOS DIBUJOS Finally, the software generates a list that includes all the information related to the result of the measurement, including the captured image, which can be sent by the operator to a central computer via WiFi or using a USB cable. DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que seguidamente se va a realizar y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de planos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that will then be made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:
La figura 1 .- Muestra una vista en perfil del dispositivo portátil objeto de la invención. La figura 2.- Muestra una segunda vista en perspectiva del dispositivo representado en la figura 1 . Figure 1 .- Shows a profile view of the portable device object of the invention. Figure 2.- Shows a second perspective view of the device shown in Figure 1.
La figura 3.- Muestra una representación correspondiente a una vista en perspectiva del dispositivo objeto de la invención, donde se representa el marco de la carcasa, pero no la carcasa. La figura 4.- Muestra una vista en perspectiva del mismo dispositivo representado en la figura 3 sin carcasa. La figura 5.- Muestra una vista de la abertura de la base de la carcasa de la invención. Figure 3.- Shows a representation corresponding to a perspective view of the device object of the invention, where the frame of the housing is shown, but not the housing. Figure 4.- Shows a perspective view of the same device shown in Figure 3 without housing. Figure 5.- Shows a view of the opening of the base of the housing of the invention.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN Tal y como se puede observar en las figuras 1 y 2, el dispositivo (1 ) de la presente invención está integrado por una carcasa (2), medios niveladores (3) y una base adicional (4)donde se integra una tableta (5). PREFERRED EMBODIMENT OF THE INVENTION As can be seen in Figures 1 and 2, the device (1) of the present invention is composed of a housing (2), leveling means (3) and an additional base (4) where Integrate a tablet (5).
En las figuras 3 y 4 se representa la invención sin la carcasa exterior que lo recubre, de forma tal que podemos observar la lámpara (6), una cámara de gran resolución con una lente (7), una placa calibrada a modo de elemento lineal de referencia (8) y una batería (9) que alimenta la lámpara (6). In figures 3 and 4 the invention is represented without the outer casing that covers it, so that we can observe the lamp (6), a high resolution camera with a lens (7), a plate calibrated as a linear element reference (8) and a battery (9) that powers the lamp (6).
La cámara (7) está dotada con una lente de gran resolución, preferentemente aquella que permita obtener, al menos, una medida de la superficie por cada 3 micrometros, para capturar la imagen del rodillo metálico con gran precisión cuando éste se encuentra iluminado por el haz de luz emitido por la lámpara(6). The camera (7) is equipped with a high resolution lens, preferably one that allows obtaining at least one measurement of the surface for every 3 micrometers, to capture the image of the metal roller with great precision when it is illuminated by the beam of light emitted by the lamp (6).
Tanto la cámara (7) como la lámpara (6) están dispuestos enfrentados entre sí y presentan el mismo ángulo respecto a la vertical tal que permite realizar la captura de la imagen con la máxima intensidad de la luz sin que se produzca reflexión sobre el rodillo metálico. Both the camera (7) and the lamp (6) are arranged facing each other and have the same angle with respect to the vertical such that it allows the image to be captured with maximum light intensity without reflection on the roller. metal.
Los resultados de la medición se muestran en la pantalla de visualización de la tableta (5). Preferentemente, la tableta (5) queda integrada en una base adicional (4) a la carcasa (2) que se une a ella por medio de medios de acoplamiento móviles (10), y posibilita la inclinación de la tableta (5) de forma independiente a la posición de la carcasa (2) con el fin de aumentar la comodidad en la lectura por parte del usuario. The measurement results are shown on the tablet display screen (5). Preferably, the tablet (5) is integrated in an additional base (4) to the housing (2) that is attached to it by means of mobile coupling means (10), and enables the tilting of the tablet (5) so independent of the position of the housing (2) in order to increase reading comfort by the user.
El software de la tableta (5) almacena los parámetros técnicos o patrones de referencia de cada rodillo necesarios para determinar su grado de desgaste real. Los medios niveladores (3) están obtenidos en forma de "v" invertida, posibilitando que el dispositivo (1 ) se pueda posicionar en paralelo al eje del rodillo metálico y permitiendo su desplazamiento por su superficie. En la figura 5 se representa la abertura en la base (1 1 ) de la carcasa del dispositivo (1 ), donde se representa la placa calibrada (8) situada por debajo de la lámpara (6), la cual bloquea parcialmente la luz y la toma de lectura. También en esta figura se observa la cámara (7), de forma tal que tanto la lámpara (6) como la cámara (7) emiten su haz de trabajo a través de la abertura lateral (1 1 ). The tablet software (5) stores the technical parameters or reference standards of each roller necessary to determine its actual degree of wear. The leveling means (3) are obtained in the form of an inverted "v", allowing the device (1) to be positioned parallel to the axis of the metal roller and allowing its displacement along its surface. Figure 5 shows the opening in the base (1 1) of the device housing (1), where the calibrated plate (8) below the lamp (6) is shown, which partially blocks the light and The reading socket. Also in this figure the camera (7) is observed, so that both the lamp (6) and the camera (7) emit their work beam through the side opening (1 1).
Para proceder a la realización de la medición del desgaste de los rodillos metálicos, en primer lugar, se debe aplicar sobre la superficie del rodillo metálico una solución de tiza o tinta líquida que rellena los poros del material y suaviza su rugosidad, eliminando los brillos o reflejos del rodillo. De esta forma se evitan las reflexiones no deseadas en distintos ángulos que podrían alterar la medida realizada. To proceed with the measurement of the wear of the metal rollers, first, a solution of chalk or liquid ink that fills the pores of the material and softens its roughness should be applied on the surface of the metal roller, eliminating the glossiness or roller reflections. This avoids unwanted reflections at different angles that could alter the measurement taken.
Seguidamente el operario apoya el dispositivo (1 ) en paralelo sobre su superficie e introduce en la tableta (5) el código del rodillo o el patrón de referencia de los parámetros según el rodillo a medir. The operator then supports the device (1) in parallel on its surface and enters the roller code (5) in the tablet (5) or the reference pattern of the parameters according to the roller to be measured.
Posteriormente, el operario activa la lámpara (6) y el dispositivo captura la imagen mediante la cámara (7), enviando la información a la tableta (5), que la muestra en su pantalla con los datos de la medición obtenidos, una comparativa con el patrón de rodillo seleccionado, un listado de rodillos convalidados, un gráfico de la nube de puntos 3D con la forma de la estría teórica y analizada, generando un fichero de datos que se almacena en el software del dispositivo. Subsequently, the operator activates the lamp (6) and the device captures the image through the camera (7), sending the information to the tablet (5), which shows it on its screen with the measurement data obtained, a comparison with the selected roller pattern, a list of validated rollers, a graph of the 3D point cloud with the shape of the theoretical and analyzed groove, generating a data file that is stored in the device software.

Claims

R E I V I N D I C A C I O N E S R E I V I N D I C A C I O N E S
Dispositivo portátil (1 ) para la medición de la superficie de rodillos metálicos que comprende Portable device (1) for measuring the surface of metal rollers comprising
Una lámpara que emite un haz de luz (6), A lamp that emits a beam of light (6),
una cámara con lente (7),  a camera with lens (7),
una batería (9) que alimenta, al menos, a la lámpara (6),  a battery (9) that feeds at least the lamp (6),
un elemento lineal de referencia (8) para limitar la imagen capturada,  a linear reference element (8) to limit the captured image,
una carcasa (2) donde se aloja la lámpara (6), la batería (9), la cámara (7), y el elemento lineal de referencia (8), y  a housing (2) where the lamp (6), the battery (9), the camera (7), and the linear reference element (8) are housed, and
una tableta (5) conectada con la cámara (7), caracterizado porque la carcasa del dispositivo portátil presenta, al menos, una abertura (1 1 ), preferentemente en el lateral o base de la carcasa (2), a través de la cual se realiza la toma de lectura, estando la lámpara (6) y la cámara (7) dispuestos de manera tal que ambos emiten y reciben su haz hacia la abertura lateral (1 1 ) de la carcasa (2)  a tablet (5) connected to the camera (7), characterized in that the casing of the portable device has at least one opening (1 1), preferably in the side or base of the casing (2), through which the reading is taken, the lamp (6) and the chamber (7) being arranged so that both emit and receive their beam towards the side opening (1 1) of the housing (2)
Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicación 1 a, caracterizado porque la lámpara (6) y la cámara (7) están dispuestos enfrentados y con una inclinación tal que permiten formar un ángulo respecto la vertical de entre 10e y 80e. Portable device for measuring the surface metal rollers, according to claim 1, characterized in that the lamp (6) and the chamber (7) are arranged facing and inclined such that allow to form an angle to the vertical of between 10 and and 80 e .
Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicaciones anteriores, caracterizado porque el dispositivo portátil (1 ) incluye unos medios niveladores (3) en su base que permiten posicionarlo en la superficie del rodillo de forma paralela a su eje. Portable device for measuring the surface of metal rollers, according to previous claims, characterized in that the portable device (1) includes leveling means (3) in its base that allow it to be positioned on the surface of the roller parallel to its axis.
Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicaciones anteriores, caracterizado porque la carcasa (2) presenta una batería adicional para alargar la autonomía del dispositivo. Portable device for measuring the surface of metal rollers, according to previous claims, characterized in that the housing (2) has an additional battery to extend the autonomy of the device.
5. Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicaciones anteriores, caracterizado porque la cámara y la lámpara son telecéntricas. 5. Portable device for measuring the surface of metal rollers, according to previous claims, characterized in that the camera and the lamp are Telecentric
6. Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicación 1 a, caracterizado porque el elemento lineal de referencia (8) se corresponde con un borde de una placa que se sitúa en la abertura (1 1 ). 6. Portable device for measuring the surface metal rollers, according to claim 1, wherein the linear reference element (8) corresponds to an edge of a plate that is placed in the opening (1 1).
7. Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicación 1 a, caracterizado porque el elemento lineal de referencia (8) se corresponde con una línea recta dibujada en una placa de cristal que está parcialmente pintada de negro y que se sitúa en la abertura (1 1 ). 7. A portable device for measuring the surface of metal rollers, according to claim 1, wherein the linear reference element (8) corresponds to a straight line drawn on a glass plate which is partially painted black and that place in the opening (1 1).
8. Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicaciones de la 1 a la 5, caracterizado porque la carcasa (2) presenta una abertura frontal donde se integra la tableta. 8. Portable device for measuring the surface of metal rollers, according to claims 1 to 5, characterized in that the housing (2) has a front opening where the tablet is integrated.
9. Dispositivo portátil para la medición de la superficie de rodillos metálicos, según reivindicaciones de la 1 a la 5, caracterizado porque la tableta (5) queda integrada en una base adicional (4) que incluye medios móviles (10) para la adecuada inclinación de la pantalla. 9. Portable device for measuring the surface of metal rollers, according to claims 1 to 5, characterized in that the tablet (5) is integrated in an additional base (4) that includes movable means (10) for proper inclination from the screen.
10. Procedimiento de medición de la superficie de rodillos metálicos empleando el dispositivo portátil (1 ) descrito en las reivindicaciones anteriores, que comprende las siguiente etapas: 10. Method for measuring the surface of metal rollers using the portable device (1) described in the preceding claims, comprising the following steps:
- Aplicación sobre la superficie del rodillo metálico de una solución de tiza o tinta líquida para rellenar los poros del material metálico. - Application on the surface of the metallic roller of a solution of chalk or liquid ink to fill the pores of the metallic material.
- Colocación del dispositivo portátil (1 ) en paralelo a la superficie del rodillo.  - Placing the portable device (1) parallel to the surface of the roller.
Introducir en la tableta (5) el patrón de referencia de los parámetros a medir según el rodillo.  Enter the reference pattern of the parameters to be measured according to the roller into the tablet (5).
- Activación déla lámpara (6) y captura de la imagen mediante la cámara (7). - Activation of the lamp (6) and image capture using the camera (7).
- El dispositivo (1 ) muestra de manera instantánea en la pantalla de la tableta (5) los datos de la medición obtenidos y su comparativa con el patrón de referencia del rodillo seleccionado. - The device (1) instantly shows the measurement data obtained and its comparison with the reference pattern of the selected roller on the tablet screen (5).
1 1 . Procedimiento de medición, según reivindicación 8, caracterizado porque el dispositivo activa una alerta cuando la comparativa entre las mediciones realizadas y los datos del patrón de referencia introducido por el usuario sobrepasa uno rango definido previamente. eleven . Measurement procedure according to claim 8, characterized in that the device activates an alert when the comparison between the measurements made and The reference pattern data entered by the user exceeds one previously defined range.
PCT/ES2017/070049 2016-02-18 2017-01-27 Portable device for measuring the surface of metal rollers and measuring method used with same WO2017140928A1 (en)

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