• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Portable device for measuring the surface of metal rollers and measuring procedure used with it. The invention relates to a portable device for measuring the surface of metal rollers comprising a lamp and a camera with a lens, housed in a housing and a tablet connected to the camera; where the housing of the portable device has an opening in the base, through which the reading takes place, the lamp and the camera being arranged in such a way that both emit their beam towards the same open opening in the base of the housing, the lamp and the camera being arranged at a minimum angle with respect to the vertical. The invention also relates to the measurement method employed with the described device. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2633132A1
    申请号:ES201630184
    申请日:2016-02-18
    公开日:2017-09-19
    发明作者:Sepp Mathias WOLFSGRUBER；Joaquin Angel GARCIA MARIN；Alain DIONNE HAMEL
    申请人:Fundiciones Balaguer S A；Fundiciones Balaguer SA；
    IPC主号:
    专利说明:

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    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 O N
    OBJECT OF THE INVENTION
    The present invention relates to a portable device for measuring the surface of metal rollers and the measuring procedure used therewith.
    The object of the invention is to provide the user with a portable, lightweight, safe and easy-to-use measurement device capable of accurately measuring the surface of the rollers by determining the shape, angles and radius of the recorded stripes by means of a system of 3D vision reading that prevents the diffusion of light on the material when capturing the image.
    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 total warranty on site, dramatically reducing the time and effort invested, not having to disassemble the machine roller.
    BACKGROUND OF THE INVENTION
    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 stripes and offering its lower grinding performance.
    Depending on the sector and process in which they will be used, the parameters that characterize the rollers, such as width, pitch, depth and angles of the stripes or engravings of their outer surface, will vary considerably.
    Therefore, it is vital to confirm with total guarantee and efficiency that the roller strips meet the desired technical requirements depending on their final application, so! guarantee its correct operation.
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    Likewise, it is also very important to know exactly the state of the roller blades that are being used to determine their wear and, consequently, their useful life.
    Currently, to make a measurement of the parameters that define a roller, that is to determine the shape and wear of the roller blades, a device known as a profilometer is used, which reproduces the shape of the roller blades when a needle or reader in direct contact with the surface of the stripes, runs them reproducing their shape.
    This process does not allow to obtain the shape of the radius and depth of each strip with accuracy, since the needle does not reach the depth of the 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.
    Another known measurement method is the one disclosed by patent document number JPH09323320, which describes a measuring device and method capable of determining the wear of the roller blades of any size. The measurement is performed on a mobile table, which includes an axis, rotating means, measurement cables and a frame equipped with a camera capable of obtaining black and white images.
    To measure, it is necessary to insert the roller into the axis of the mobile table and wind the measurement cables on the roller straps with some tension. Next, the mobile table moves axially towards the frame, while rotating the shaft to obtain the shape of the roller strips continuously and efficiently, without damaging them. When the mobile table passes through the frame while rotating the axis, 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 measurement methods described, use devices of great size and complexity that also do not determine the shape of the stripes with precision.
    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.
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    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.
    For all the above, no portable, economical, lightweight, safe and high-precision device capable of measuring the parameters that characterize the metal roller strips is known in the state of the art.
    DESCRIPTION OF THE INVENTION
    Through the portable device for measuring the surface of the metal rollers of the present invention, the problem described above is solved, 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.
    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.
    The device has a tablet (tablet in 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 is integrated, or on an additional base to the housing that includes mobile means for the adequate inclination of the screen, allowing in this second realization 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 lightning of the light and the reading are made.
    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
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    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 stripes is made, serving as a reference for reading the geometry of the stripes.
    Optionally, the linear reference element is integrated by 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. Thus, the lamp and the camera are arranged at a minimum angle with respect to the vertical, allowing to capture the light and the shadow representing the profile of the stripes when lighting the metal surface with the maximum intensity of light without the occurrence of light diffusion on said metal surface. Specifically, the inclination with which the lamp and the camera are arranged in the device allow to form an angle with respect to the vertical, on each side, between 10 ° and 80 ° so that, thus, the camera can capture a surface image of quality roller.
    Advantageously, that the camera lens and the 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 its 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.
    Optionally, the lamp emits a beam of light of red color, which allows the realization of measurements in the middle of the day, 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 electrical network for its operation, when presenting a battery that feeds at least the lamp and guarantees its correct operation. By
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    On the other hand, the tablet also has its own battery.
    Optionally, the device may have an additional battery to power the tablet and provide it with greater autonomy.
    Likewise, the tablet includes an analysis software that receives the image captured by the camera and allows obtaining the technical parameters necessary to successfully carry out 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 strip.
    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.
    Advantageously, that the device is portable and equipped with leveling means allows obtaining with total guarantee and practicality the necessary parameters to calculate the degree of wear of the metal roller blades, without having to uninstall them for transfer to a measurement bench. That is, the device of the invention allows the measurement to be made 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 composed of the steps described below:
    First of all, it is necessary to apply a solution of liquid chalk or ink on the surface of the metal roller to fill the pores of the metal 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 alter the measurement is avoided.
    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
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    so that the software installed in the tablet recovers the reference measurements of the roller, previously stored.
    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 by means of 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.
    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.
    Finally, the software generates a list that includes all the information related to the result of the measurement made, 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
    To complement the description that will then be carried out and in order to help a better understanding of the features of the invention, according to a preferred example of practical realization thereof, a set of drawings is accompanied as an integral part of said description. where, with an illustrative and non-limiting nature, the following has been represented:
    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.
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    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.
    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 a tablet (5) is integrated ).
    In figures 3 and 4 the invention is shown 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 feeds 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 the maximum intensity of the light without reflection on the roller. metal.
    The measurement results are displayed on the tablet's 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.
    The tablet software (5) stores the technical parameters or reference standards of each roller necessary to determine its actual degree of wear.
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    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 movement along its surface.
    Figure 5 shows the opening in the base (11) of the device housing (1), where the calibrated plate (8) below the lamp (6) is shown, which partially blocks the light and the take reading. 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 (11).
    To proceed with the measurement of wear of the metal rollers, first, a solution of liquid chalk or ink that fills the pores of the material and softens its roughness should be applied on the surface of the metal roller, eliminating the roughness or roller reflections. This avoids unwanted reflections at different angles that could alter the measurement taken.
    The operator then supports the device (1) in parallel on its surface and enters the roller code or the reference pattern of the parameters in the tablet (5) according to the roller to be measured.
    Subsequently, the operator activates the lamp (6) and the device captures the image using 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 in the form of the theoretical and analyzed strut, generating a data file that is stored in the device software.
    权利要求:
    Claims (11)
    [1]
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    R E I V I N D I C A C I O N E S
    1. Portable device (1) for measuring the surface of metal rollers comprising
    A lamp that emits a beam of light (6), a camera with a lens (7),
    a battery (9) that feeds at least the lamp (6),
    a linear reference element (8) to limit the captured image,
    a housing (2) where the lamp (6), the battery (9), the camera (7), and the housing are housed
    linear reference element (8), and
    a tablet (5) connected to the camera (7),
    characterized because
    The housing of the portable device has at least one opening (11), preferably on the side or base of the housing (2), through which the reading is made, the lamp (6) and the camera being (7) arranged in such a way that both emit and receive their beam towards the side opening (11) of the housing (2)
    [2]
    2. Portable device for measuring the surface of metal rollers, according to claim 1a, characterized in that the lamp (6) and the chamber (7) are arranged facing each other and with an inclination such that they allow to form an angle with respect to the vertical between 10 ° and 80 °.
    [3]
    3. 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 .
    [4]
    4. 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]
    5. Portable device for measuring the surface of metal rollers, according to previous claims, characterized in that the chamber and the lamp are
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    telecentric
    [6]
    6. Portable device for measuring the surface of metal rollers, according to
    claim 1, characterized in that the linear reference element (8) is
    corresponds to an edge of a plate that is located in the opening (11).
    [7]
    7. Portable device for measuring the surface of metal rollers, according to
    claim 1, characterized in that the linear reference element (8) is
    It corresponds to a straight line drawn on a glass plate that is partially painted black and is located in the opening (11).
    [8]
    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]
    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 adequate inclination from the screen.
    [10]
    10. Method for measuring the surface of metal rollers using the portable device (1) described in the preceding claims, comprising the following steps:
    - Application on the surface of the metallic roller of a solution of chalk or liquid ink to fill the pores of the metallic material.
    - Colocation of the portable device (1) in parallel to the surface of the roller.
    - Insert the reference pattern of the parameters to be measured according to the roller into the tablet (5).
    - Activation of the lamp (6) and image capture using the camera (7).
    - 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).
    [11]
    11. 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 a previously defined range.
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    同族专利:
    公开号 | 公开日
    ES2633132B1|2018-02-07|
    WO2017140928A1|2017-08-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5561526A|1994-05-26|1996-10-01|Lockheed Missiles & Space Company, Inc.|Three-dimensional measurement device and system|
    DE19930688A1|1999-07-02|2001-01-04|Byk Gardner Gmbh|Surface quality determination device for car bodywork, comprises illuminating device containing light emitting diode and device capturing light reflected from surface which contains photosensor, filter between them modifying light|
    DE10122313A1|2001-05-08|2002-11-21|Wolfgang P Weinhold|Method and device for the contactless examination of an object, in particular with regard to its surface shape|
    ES2337323B1|2007-06-11|2010-10-13|Universitat Ramon Llull Fundacio Privada|RUGOSIMETER|
    DE202010017205U1|2010-02-18|2011-05-12|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Device for the optical measurement of a pen or rod-shaped body|
    法律状态:
    2018-02-07| FG2A| Definitive protection|Ref document number: 2633132 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180207 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630184A|ES2633132B1|2016-02-18|2016-02-18|Portable device for measuring the surface of metal rollers and measuring procedure used with it|ES201630184A| ES2633132B1|2016-02-18|2016-02-18|Portable device for measuring the surface of metal rollers and measuring procedure used with it|
    PCT/ES2017/070049| WO2017140928A1|2016-02-18|2017-01-27|Portable device for measuring the surface of metal rollers and measuring method used with same|
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