WO2017125576A1 - Dispositif et procédé de caractérisation d'une surface d'un cylindre ou d'un cylindre cannelé - Google Patents

Dispositif et procédé de caractérisation d'une surface d'un cylindre ou d'un cylindre cannelé Download PDF

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Publication number
WO2017125576A1
WO2017125576A1 PCT/EP2017/051234 EP2017051234W WO2017125576A1 WO 2017125576 A1 WO2017125576 A1 WO 2017125576A1 EP 2017051234 W EP2017051234 W EP 2017051234W WO 2017125576 A1 WO2017125576 A1 WO 2017125576A1
Authority
WO
WIPO (PCT)
Prior art keywords
reference edge
roller
chamber
light radiation
photodetector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2017/051234
Other languages
German (de)
English (en)
Inventor
Daniel LAUBSCHER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buehler AG
Original Assignee
Buehler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Publication of WO2017125576A1 publication Critical patent/WO2017125576A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/01—Indication of wear on beaters, knives, rollers, anvils, linings and the like

Definitions

  • the invention relates to an apparatus and a method for characterizing a surface of a component, in particular for characterizing a surface of a roll of a roll mill.
  • the surface is preferably a profiled surface or a corrugated surface of a corrugating roll.
  • the invention further relates to a roller mill, which is equipped with an inventive device for characterization.
  • the state of the surface of the rolls is important because, for example, the crushing Leis ⁇ processing depends on the surface finish of the roller.
  • the knowledge of the surface condition of the rolls for the Be ⁇ drive is important because it must be recognized in time, when the need Wal ⁇ zenober Structure or an optionally applied to the wear layer replaced or renewed to ensure that no ⁇ remain incurred by damage to the roller body can. A precise knowledge of the surface texture of the rolls is thus he wishes ⁇ .
  • the surface texture becomes visual
  • a profile print can be taken and an actual profile can be determined on the basis of the profile print, as known from DE 100 63 377 B4.
  • the disadvantage here is the time required and the necessary plurality of steps to determine the roll profile.
  • mechanical scanning devices are known with a sensor which record the roller profile with slowly rotating roller. The roll profile can be determined in about 15 minutes.
  • the application of the invention is not limited to rolls but can be used with components having a machined surface.
  • An inventive apparatus for characterizing a surface comprises a first chamber and a second opaque opaque chamber. Both chambers each have a support side for a surface to be characterized ⁇ surface, wherein the support side has at least one opening. Both chambers are also arranged side by side, wherein between the two chambers, a partition wall is formed, which has a reference edge, which is arranged in a region of depending Weil ⁇ at least one opening.
  • the device further comprises at least one light source, which is arranged in the first chamber, and at least one photodetector, which is arranged wel ⁇ cher in the second chamber.
  • both chambers are formed by a housing made of an opaque material with a support side for a surface to be characterized. In this case, the partition wall divides an interior of the housing into the first chamber and the second chamber.
  • the support side is according to the invention the portion of the Kam ⁇ mer (n), which is sheet plat ⁇ on the surface to be characterized.
  • the support side has at least one opening, which preferably occupies ⁇ almost the entire support side.
  • the chamber may be cuboid-shaped, with one surface of the cuboid chamber being omitted and the opening being formed.
  • the support side is formed by the opening and the peripheral edge of the chamber.
  • the reference edge of the dividing wall may be part of the dividing wall or it may be a fastened or arranged element.
  • the reference edge is arranged in the region of at least one opening. This means that a space between the reference edge and the surface to be characterized comb free of legacy ⁇ was share is.
  • the surface is characterized by measuring the light radiation emitted by the light source through the photodetector.
  • the chambers are doing at their plat ⁇ on the surface.
  • the chambers and the support side are matched to the surface to be charac ⁇ terized such that, when the chambers rest on the surface, substantially no light radiation can pass from the outside into the first and second chambers.
  • the light radiation measured by the photodetector thus comes from finally from the at least one light source of the device.
  • the reference edge passes, depending on the procurement of the surface, more or less light radiation to the photodetector.
  • the light intensity measured by the photodetector is thus directly related to the nature of the surface.
  • the reference ⁇ edge may be arranged and designed that with a sprün Mi originally (ie new) state of the surface no light ⁇ radiation can pass into the second chamber.
  • the surface is subject to wear and worn, light radiation between the reference edge and the surface can - for example, by depressions - into the second chamber long and is detected by the photodetector. It goes without saying that the more light radiation is detected by the photodetector, the greater is the wear / damage of the surface.
  • the reference edge may allow the passage of light radiation at a target state of the upper ⁇ surface, at During a worn surface is less light can reach the photodetector. This is the case, for example, when a profiled surface is smoothed more and more due to wear. Initially, by recesses of the surface
  • the support side is provided with sealing means.
  • the sealing means are preferably arranged circumferentially.
  • the sealing ⁇ means is preferably an elastic sealing lip and / or a sealing brush.
  • sealants on the support side ensures that no light radiation from the environment can enter the chambers and consequently influence the measurement results.
  • the reference edge of the partition wall is preferably movable out ⁇ forms.
  • the movement of the partition wall is preferably carried ⁇ perpendicular to the right surface to be characterized.
  • the reference edge is movable and can thus rest on the surface. It may also be conceivable for the device to have a plurality of reference edges which, for example, have different profiles which complement one another to a profiled surface and which can be selected by a user. This can preferably take place by means of a slide from the outside, as is known, for example, from socket travel adapters. The movement is preferably perpendicular to the surface to be characterized.
  • the diaphragm is movable in the gap and, in particular, slidably arranged in the gap.
  • the diaphragm can be exchanged from ⁇ depending on characterizing surface.
  • the freedom of movement of the diaphragm is selected such that when the device is positioned on the surface to be characterized, the reference edge at least partially touches the surface.
  • the reference edge preferably extends arcuately with a Krüm ⁇ mung radius corresponding to a target radius of curvature of about cha ⁇ rakter expect surface.
  • the surface to be characterized is curved and is the special ⁇ a surface of a roller which Referenzkan ⁇ te is performed with a radius of curvature corresponding to a desired radius of the roller.
  • the target (curve) is the radius Krümmungsra ⁇ dius the surface or roll in unused condition. If the surface or roller is profiled, the Krüm ⁇ mung radius corresponding to a radius of a casing or envelope.
  • the support side preferably has a profile which is complementary to an envelope surface of the surface to be characterized.
  • the surface to be characterized is curved and is the special ⁇ a lateral surface of a roller which Auflagesei ⁇ te is that no gaps are produced on the surface during placement of the device in accordance with executed and a complete darkening of the waste chambers is made possible. If the surface is pro ⁇ filiert, as mentioned above, additional sealing means are used.
  • the reference edge is preferably formed tapered.
  • the light source preferably comprises an LED.
  • Other light sources such as halogen lamps, incandescent lamps etc. can also be used.
  • the Light source may additionally include a light guide, which opens into the first chamber.
  • the photodetector preferably comprises at least one photodiode and / or a photocell and / or a photomultiplier and / or a CMOS sensor and / or a CCD sensor and / or a phototransistor and / or a photoresistor.
  • the at least one photodetector is preferably connected or connectable to means for displaying the measured light radiation.
  • the at least one photodetector is connected or connectable to means for comparing the measured light radiation with at least one reference value.
  • the means for displaying and comparing may be part of the device, for example a display or small computer or the device is connected to such means, wired or wireless.
  • a connection can be made via WLAN with a computer (control unit, desktop computer, laptop, tablet, mobile phone).
  • the connection may preferably be made with a control computer of the roller mill, so that, if appropriate, the corresponding surface condition and the resulting wear of the roller during operation of the roller mill can be taken into account.
  • the derived Abnüt ⁇ tion of the surface is preferably carried out by the photodetector ⁇ tor measured light radiation with reference values, which are assigned to a degree of wear of the surface is compared.
  • the apparatus comprises means for displaying a comparison of the characterized schleissgrades surface which in particular ⁇ sondere constitute a display according to the traffic light principle.
  • a green, yellow or red color can be displayed, as the case may be whether the surface has a low, medium or high wear (replacement / revision of the surface necessary).
  • the device is preferably battery-operated so that it can be operated independently of external energy sources such as sockets and without cables.
  • Rechargeable batteries are preferably used as energy source.
  • the device preferably comprises means for wireless communication with a computer.
  • the computer can be both a fixed and a mobile computer (eg PDA, smartphone, laptop).
  • the wireless communication takes place be ⁇ preferably via a standardized communication protocol such as WLAN, Bluetooth, NFC, Z-Wave, ZigBee, etc.
  • the device is preferably designed as a handheld device. This means that the device can be handled by a user with his hands and preferably with one hand.
  • a largest dimension of the device is less than 750 mm.
  • a length (measured pa ⁇ rallel to a light source photodetector axis) and / or a width (measured perpendicular to the length) is less than or equal to 150 mm or 100 mm.
  • the device weighs between 50 g and 1 kg. More preferably, the device weighs no more than 500 g.
  • the inventive method for characterizing a surface comprises the Surface and the measuring of the below the reference edge through ⁇ radiating light radiation.
  • the inventive method is carried out in particular with a device according to the invention.
  • the advantages listed above particular embodiments concerning inventions dung device according apply mutatis mutandis to the erfindungsge ⁇ Permitted method.
  • a step of comparing the measured light radiation with reference values which are associated with a degree of wear of the surface is carried out after the step of measuring below the Re ference ⁇ edge through radiant light radiation.
  • the above-mentioned inventive device may also be loading a component of a rolling mill and facilitate automated Determined ⁇ development of the surface texture of a roll.
  • the device is placed on the means of an actuator to CHARACTERI ⁇ sierende roller, the surface finish being averages ⁇ . Possibly. the surface finish can be directly calculated and for the white ⁇ direct operation of the rolling mill (gap width setting, supply schleissgradan Attache, if necessary, automatic notification of the Ver ⁇ schleissgrades at a service center) can be used by a control computer of the roll mill.
  • the invention will be better explained below with reference to a preferred Ausrete ⁇ approximately embodiment in conjunction with the drawings. Show it: 1 shows a section through a preferred embodiment of the inventive device.
  • Fig. 2 is a view of the backlit aperture of a
  • Fig. 3 is a view of a second, backlit
  • FIG. 1 is a perspective sectional view of a device 1 is shown, which has been placed on the grooved surface 2 of a Rif ⁇ felwalze. 3
  • the device 1 consists of a substantially quaderförmi conditions housing 4, which at its designated as a support side 5 ⁇ th, the corrugated surface 2 side facing an opening 6 has ⁇ .
  • the housing 4 has openings 6 arranged around the opening 14.
  • a partition wall 7 is arranged, which is designed as a double wall. Between the two walls of the partition wall 7, a gap 13 is present.
  • the interior 9 is divided by the partition 7 into a first chamber I and a second chamber II.
  • In the first chamber I is a light source 10, schematically by the bulb Darge ⁇ represents, arranged.
  • a movable aperture 12 Disposed in the gap 13 is a movable aperture 12, which is provided with a curved reference edge 8 and which can slide along the partition 7 in the gap 13.
  • the aperture 12 is better visible from the front in FIG. 2, wherein the aperture 12 visible in FIG. 2 is shown as viewed from the second chamber II in the direction of the first chamber I.
  • the reference edge has a radius of a target of the corrugating roll 3 corresponding radii of curvature ⁇ us. By gravity, this is applied to the corrugated surface 2.
  • Means for restricting the movement of the diaphragm 12 to prevent it from falling out of the gap 13 when the device 1 is removed from the corrugating roller 3 are not visible.
  • Light radiation from the light source 10 can only pass through the depressions of the corrugated surface 2 below the reference edge 8. It can be seen that the higher the wear of the corrugated surface 2, the smaller the area through which the light radiation can enter the second chamber II. By measuring the incident on the photodetector 11 light radiation, which decreases with progressive degree of wear of the corrugated surface, thus the degree of wear of the Riffelflä- surface 2 can be determined.
  • FIG. 3 shows a second embodiment of the reference edge 8 of the diaphragm 12.
  • the course of the reference edge 8 is saw-toothed. shaped and complementary to the new profile of the corrugated surface 2.
  • no light radiation would pass from the first chamber I into the second chamber II.
  • 2 of the gap between the grooved surface 2 and the Re ference ⁇ edge 8 is shown in Figure 3 with the progress of wear of the grooved surface is greater.
  • An increase in the measured light radiation in the second chamber II is thus directly related to the degree of wear of the corrugated surface 2.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Dispositif de caractérisation d'une surface d'un cylindre d'un broyeur à cylindres comprenant deux chambres et une cloison dotée d'une arête de référence, une source lumineuse étant disposée dans la première chambre et un photodétecteur étant disposé dans la deuxième chambre. Le rayonnement lumineux passant sous l'arête de référence est mesuré aux fins de caractérisation de la surface.
PCT/EP2017/051234 2016-01-20 2017-01-20 Dispositif et procédé de caractérisation d'une surface d'un cylindre ou d'un cylindre cannelé Ceased WO2017125576A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16152121.6 2016-01-20
EP16152121 2016-01-20

Publications (1)

Publication Number Publication Date
WO2017125576A1 true WO2017125576A1 (fr) 2017-07-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/051234 Ceased WO2017125576A1 (fr) 2016-01-20 2017-01-20 Dispositif et procédé de caractérisation d'une surface d'un cylindre ou d'un cylindre cannelé

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WO (1) WO2017125576A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509809A2 (fr) * 1991-04-17 1992-10-21 De Beers Industrial Diamond Division (Proprietary) Limited Appareil d'indication de l'usure d'un rouleau d'écrasement et méthode
DE102008060621B3 (de) * 2008-12-05 2010-08-12 Carl Zeiss Ag Optische Anordnung zum berührungslosen Messen oder Prüfen einer Körperoberfläche
DE10063377B4 (de) 2000-12-19 2013-06-27 Bühler AG Verfahren zur Bestimmung eines Walzenwechsels von Riffelwalzen
US20150253131A1 (en) * 2012-10-29 2015-09-10 Metso Minerals Industries, Inc. Monitoring device for a roller crusher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509809A2 (fr) * 1991-04-17 1992-10-21 De Beers Industrial Diamond Division (Proprietary) Limited Appareil d'indication de l'usure d'un rouleau d'écrasement et méthode
DE10063377B4 (de) 2000-12-19 2013-06-27 Bühler AG Verfahren zur Bestimmung eines Walzenwechsels von Riffelwalzen
DE102008060621B3 (de) * 2008-12-05 2010-08-12 Carl Zeiss Ag Optische Anordnung zum berührungslosen Messen oder Prüfen einer Körperoberfläche
US20150253131A1 (en) * 2012-10-29 2015-09-10 Metso Minerals Industries, Inc. Monitoring device for a roller crusher

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