EP2076882A2 - Dispositif et procédé pour déterminer la dimension d'un interstice et l'affleurement entre des composants adjacents - Google Patents

Dispositif et procédé pour déterminer la dimension d'un interstice et l'affleurement entre des composants adjacents

Info

Publication number
EP2076882A2
EP2076882A2 EP07820807A EP07820807A EP2076882A2 EP 2076882 A2 EP2076882 A2 EP 2076882A2 EP 07820807 A EP07820807 A EP 07820807A EP 07820807 A EP07820807 A EP 07820807A EP 2076882 A2 EP2076882 A2 EP 2076882A2
Authority
EP
European Patent Office
Prior art keywords
gap
contours
determined
determining
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07820807A
Other languages
German (de)
English (en)
Inventor
Michael Metzler
Frank Schneider
Frank Forster
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2076882A2 publication Critical patent/EP2076882A2/fr
Withdrawn legal-status Critical Current

Links

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
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery
    • G06T7/521—Depth or shape recovery from laser ranging, e.g. using interferometry; from the projection of structured light

Definitions

  • the invention relates to a device and a method for determining at least one gap assigned to two contours.
  • the invention has for its object to improve a device and a method of the type mentioned above in that gap dimensions can be determined with higher accuracy and less effort.
  • the method can be used in the measurement of contours and / or edges with respect to gap size and / or flush in the automotive sector.
  • FIG 1 shows an inventive device for determining ei ⁇ nes gap dimension
  • FIG 2 is a nip-forming contours
  • FIG. 3 shows a flow chart for the inventive method for determining a gap.
  • a device for measuring contours and edges posted gap and flush of adjacent components comprises a projector 1, a camera 2 and an evaluation unit 3, which can be accommodated together in a measuring device to be designated as a sensor 4.
  • a measuring device to be designated as a sensor 4.
  • a sensor 4 In particular, in the measurement of car bodies in the automotive industry, such a device can be used advantageously.
  • the inventive device described here and the associated method are also applicable to the measurement of other components.
  • the projector 1 projects coded light onto the region to be imaged, which here has two contours A, B of arbitrary components which form a gap in the partial regions Cx, Dx. At least at a predefined one Measuring point is task appropriate to determine the gap Sp.
  • the camera 2 detects the illuminated contours A, B in a color or gray-scale image from which a topographic image is generated with the aid of triangulation. This is done with the aid of the evaluation unit 3 on the basis of the knowledge of the distance between the projector 1 and the camera 2 and the associated to an object point and its image light rays and their angles in a known manner.
  • contours A, B which are in the form of coordinates of a stationary coordinate system, are subject to measurement inaccuracies.
  • the measured values are smoothed in the evaluation unit 3 and the gap Sp is derived from the smoothed contours C, D (see FIG. 2).
  • the gap Sp is derived from the smoothed contours C, D (see FIG. 2).
  • the evaluation unit 3 instruction the second measurement point M2 on the second smoothed contour D, the distance between the two Measuring points Ml, M2 as gap ⁇ measure Sp to determine.
  • the stored instructions may, for example, consist in that firstly the tangent is applied to the first smoothed Kon ⁇ structure at the measurement point Ml and then the perpendicular is erected, given by the intersection with the second geglat- ended contour D matches the second measurement point M2. Depending on the particular task, however, other instructions can also be used to determine the second measuring point M2.
  • gaps Sp are also determined in the subregions Cx, Dx of the contours A, B, only a gap Sp being shown here by way of example.
  • the device according to FIG. 1 is also provided with a memory 5 in which the nominal values are stored.
  • the determined gap dimensions Sp are compared with the respective stored setpoint values and from this correction values are calculated. These are fed to a control unit 6, which controls a device 7, for example a robot, in order to correct the position of the contours with it to the desired gap dimension, ie setpoint value.
  • the device described above and the method for determining the gap dimension carried out with it are also suitable for assessing the flushing.
  • the body to be measured is first positioned. Since the quality points to be examined by body type are different, first the body type is determined for the quality points are submit ⁇ lays in a memory. For example, with the device described above, a three-dimensional image of the body or of a partial region of the body is generated. The measured values of the imaged component, for example the body, or a region thereof, which comprises the contours with the gap to be measured, are corrected by a smoothing. Thus, there are smoothed measured values for the contours which form the gap for which the gap dimensions Sp are determined at the given quality points. These gaps Sp are compared with stored nominal values and from this correction values are formed which can be displayed as required. The correction values are fed to a control unit 6 (see FIG.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Image Analysis (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne un procédé pour déterminer la dimension d'un interstice. Ce procédé consiste à générer une représentation tridimensionnelle de la zone comprenant l'interstice à examiner. Les valeurs de mesure des contours définissant l'interstice sont ensuite lissées, puis la dimension de l'interstice (Sp) est déterminée à partir des contours lissés d'après une instruction mémorisée. L'invention concerne en outre un dispositif associé.
EP07820807A 2006-10-09 2007-10-02 Dispositif et procédé pour déterminer la dimension d'un interstice et l'affleurement entre des composants adjacents Withdrawn EP2076882A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006048030A DE102006048030A1 (de) 2006-10-09 2006-10-09 Vorrichtung und Verfahren zur Ermittlung von Spaltmaß und Bündigkeit angrenzender Bauteile
PCT/EP2007/060425 WO2008043685A2 (fr) 2006-10-09 2007-10-02 Dispositif et procédé pour déterminer la dimension d'un interstice et l'affleurement entre des composants adjacents

Publications (1)

Publication Number Publication Date
EP2076882A2 true EP2076882A2 (fr) 2009-07-08

Family

ID=39184813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07820807A Withdrawn EP2076882A2 (fr) 2006-10-09 2007-10-02 Dispositif et procédé pour déterminer la dimension d'un interstice et l'affleurement entre des composants adjacents

Country Status (3)

Country Link
EP (1) EP2076882A2 (fr)
DE (1) DE102006048030A1 (fr)
WO (1) WO2008043685A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2423639B1 (fr) * 2010-08-31 2013-03-27 Siemens Aktiengesellschaft Procédé d'établissement de mesures d'écartement et/ou d'affleurement de pièces de carrosserie d'un véhicule automobile et programme de commande
DE102012018776A1 (de) * 2012-09-24 2014-04-17 Alfing Kessler Sondermaschinen Gmbh Prüfvorrichtung und Verfahren zur Prüfung einer Außenoberfläche eines bruchgetrennten Werkstücks
HUE035472T2 (hu) 2013-11-28 2018-05-02 Siemens Ag Eljárás ajtó felszerelésére egy jármûkarosszérián

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129010A (en) * 1989-12-15 1992-07-07 Kabushiki Kaisha Toyoto Chuo Kenkyusho System for measuring shapes and dimensions of gaps and flushnesses on three dimensional surfaces of objects
DE19910699B4 (de) * 1999-03-10 2006-04-27 Inos Automationssoftware Gmbh Anordnung zum Messen der Breite eines Spalts, Spaltmessanordnung und Messverfahren
US7024032B2 (en) * 2002-10-31 2006-04-04 Perceptron, Inc. Method for assessing fit and alignment of a manufactured part

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008043685A2 *

Also Published As

Publication number Publication date
DE102006048030A1 (de) 2008-04-17
WO2008043685A2 (fr) 2008-04-17
WO2008043685A3 (fr) 2008-10-09

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