DE20023127U1 - Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance - Google Patents

Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance

Info

Publication number
DE20023127U1
DE20023127U1 DE20023127U DE20023127U DE20023127U1 DE 20023127 U1 DE20023127 U1 DE 20023127U1 DE 20023127 U DE20023127 U DE 20023127U DE 20023127 U DE20023127 U DE 20023127U DE 20023127 U1 DE20023127 U1 DE 20023127U1
Authority
DE
Germany
Prior art keywords
laser
products
workpiece
diameter
eccentricity
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.)
Expired - Lifetime
Application number
DE20023127U
Other languages
German (de)
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.)
LAP GmbH Laser Applikationen
Original Assignee
LAP GmbH Laser Applikationen
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 LAP GmbH Laser Applikationen filed Critical LAP GmbH Laser Applikationen
Priority to DE20023127U priority Critical patent/DE20023127U1/en
Priority claimed from DE10023172A external-priority patent/DE10023172C5/en
Publication of DE20023127U1 publication Critical patent/DE20023127U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
    • 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
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
    • G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Device comprises three or more laser triangulation devices (14) arranged in the same plane and aimed at a common point being the center of the elongated work-piece. The plane of the laser devices is perpendicular to the axis of the work-piece and with an ideal arrangement of 6 lasers the lasers are arranged in pairs at angles with equal separation between them of 60 degrees. Independent claims are made for devices for measuring devices for determination of diameter and eccentricity of elongated round products. Devices comprise laser scanners consisting of light sensitive sensors and laser sources. The laser scanners are arranged either to provide tangential scanning of the work-piece surfaces or so that the work-piece throws a shadow completely within the illuminated area of the sensors. Independent claims are made for methods for determining diameter and eccentricity of elongated work-pieces.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (7)

1. Vorrichtung zur Messung von Durchmesser und Unrundheit von in Längsrichtung vorbewegten Rundprodukten an Walzstraßen, mit
  • - einer Meßeinrichtung aus drei oder mehr Laserscannern, die jeweils ei­ nen lichtempfindlichen Sensor und einen Laser aufweisen, und
  • - einer Auswerteeinrichtung, die aus der Position einer auf den Sensor geworfenen Schattenkante eine parallel zum Laserstrahl verlaufene Ge­ rade und aus drei Geraden einen tangential an den Geraden anliegenden Kreis berechnet und aus mehreren Kreisen als Unrundheit die Differenz von größtem und kleinstem Durchmesser der Kreise berechnet.
1. Device for measuring the diameter and out-of-roundness of round products advanced in the longitudinal direction on rolling mills, with
  • - A measuring device from three or more laser scanners, each having a light-sensitive sensor and a laser, and
  • - An evaluation device that calculates from the position of a shadow edge thrown on the sensor a parallel to the laser beam Ge straight line and from three straight lines a circle tangent to the straight line and calculates the difference between the largest and smallest diameter of the circles from several circles.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Laserstrahlen zur tangentialen Antastung (38) des Werkstücks (12) ein Dreieck oder ein Vieleck um das Werkstück derart bilden, daß das Werkstück die beleuchteten Bereiche der Sensoren (28) teilweise verdeckt.2. Device according to claim 1, characterized in that the laser beams for tangential probing ( 38 ) of the workpiece ( 12 ) form a triangle or a polygon around the workpiece such that the workpiece partially covers the illuminated areas of the sensors ( 28 ). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß drei Laserscanner vorgesehen sind, die einen Winkel von 120° einschließen. 3. Device according to claim 2, characterized in that three laser scanners are provided, which enclose an angle of 120 °.   4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß je­ dem Laserscanner ein Nullpunkt zugeordnet ist, relativ zu dem die Abstände der in dem Laserstrahl ragenden Außenkanten bestimmt werden, wobei der Abstand (34) der am weitesten in den Laserstrahl ragenden Außenkante des Werkstücks gemes­ sen wird, und das die Nullpunkte der Laserscanner in dem Zentrum (36) des Meß­ systems zusammenfallen.4. Device according to one of claims 1 to 3, characterized in that a zero point is assigned to each of the laser scanners, relative to which the distances of the outer edges projecting in the laser beam are determined, the distance ( 34 ) being the most projecting into the laser beam Outer edge of the workpiece is measured, and the zero points of the laser scanners in the center ( 36 ) of the measuring system coincide. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Laserscanner um den gemeinsamen Nullpunkt drehbar gelagert sind.5. The device according to claim 4, characterized in that the laser scanner the common zero point are rotatably mounted. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Laserstrahlen der Laserscanner das Werkstück (12) derart beleuchten, daß das Werkstück einen Schatten (44) vollständig innerhalb des ausgeleuchteten Bereichs des Sensors (42) wirft.6. The device according to claim 5, characterized in that the laser beams of the laser scanner illuminate the workpiece ( 12 ) such that the workpiece casts a shadow ( 44 ) completely within the illuminated area of the sensor ( 42 ). 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Laserscanner in der durch ihre Laserstrahlen aufgespannten Ebene drehbar sind.7. The device according to claim 6, characterized in that the laser scanner in the plane spanned by their laser beams are rotatable.
DE20023127U 2000-05-11 2000-05-11 Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance Expired - Lifetime DE20023127U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20023127U DE20023127U1 (en) 2000-05-11 2000-05-11 Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20023127U DE20023127U1 (en) 2000-05-11 2000-05-11 Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance
DE10023172A DE10023172C5 (en) 2000-05-11 2000-05-11 Method and device for measuring the out-of-roundness of elongate workpieces

Publications (1)

Publication Number Publication Date
DE20023127U1 true DE20023127U1 (en) 2003-02-20

Family

ID=26005640

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20023127U Expired - Lifetime DE20023127U1 (en) 2000-05-11 2000-05-11 Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance

Country Status (1)

Country Link
DE (1) DE20023127U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004022637B4 (en) * 2003-07-11 2006-03-30 Willibald Hawlitschek Optical method and apparatus for measuring non-concave cross-sectional areas
DE102008015809A1 (en) 2008-03-27 2009-10-08 Willibald Hawlitschek Non-concave cross-sectional area measuring method, involves identifying singular non-differentiable point of function using computational process, and separately calculating segments of area using process
DE102008033405A1 (en) 2008-07-16 2010-01-28 Willibald Hawlitschek Method for measuring non-concave cross section surfaces of body, involves determining new position of cross section surface and rotation axis or detector of optical measuring device
CN111578865A (en) * 2020-05-15 2020-08-25 浙江钰茂泽智能装备有限公司 Appearance on-line detection and processing device for cylindrical object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004022637B4 (en) * 2003-07-11 2006-03-30 Willibald Hawlitschek Optical method and apparatus for measuring non-concave cross-sectional areas
DE102008015809A1 (en) 2008-03-27 2009-10-08 Willibald Hawlitschek Non-concave cross-sectional area measuring method, involves identifying singular non-differentiable point of function using computational process, and separately calculating segments of area using process
DE102008033405A1 (en) 2008-07-16 2010-01-28 Willibald Hawlitschek Method for measuring non-concave cross section surfaces of body, involves determining new position of cross section surface and rotation axis or detector of optical measuring device
CN111578865A (en) * 2020-05-15 2020-08-25 浙江钰茂泽智能装备有限公司 Appearance on-line detection and processing device for cylindrical object

Similar Documents

Publication Publication Date Title
ES2256098T5 (en) Device and procedure for measuring the thickness and eccentricity of elongated work pieces
US4394683A (en) New photodetector array based optical measurement systems
AU616731B2 (en) Method and apparatus for monitoring the surface profile of a moving workpiece
US4686374A (en) Surface reflectivity detector with oil mist reflectivity enhancement
DE19721915C1 (en) Method and device for measuring unevenness in an object surface
DE3216053C2 (en)
CA2250435A1 (en) Method for the contact-free measurement of the distance of an object according to the principle of laser triangulation
DE2501015C2 (en) Non-contact thickness measurement method
DE19519741A1 (en) Stacker crane sensor system
EP0772148A3 (en) Optical detecting device
DE2440321B2 (en) DEVICE FOR THE AUTOMATIC MEASUREMENT OF TUNNEL PROFILES
US4585947A (en) Photodetector array based optical measurement systems
CN1093935C (en) Three-dimensional contour phase measuring method and device for fast projection structure beam
EP1589319A1 (en) Apparatus and method for determining the straightness or relative orientation of hollow cylindric or hollow cone bodies
DE20023127U1 (en) Optical measurement of diameter, thicknesses and eccentricity of elongated products, especially products moving on a roller path, to provide continuous monitoring ensuring products are within tolerance
FR2448125A1 (en) METHOD FOR MEASURING DISTANCES AND DETERMINING THE PROFILE OF A WORKPIECE, AND CORRESPONDING DEVICE
EP0593067B1 (en) Procedure and device for the determination of the orientation and position of objects with laserbeams
EP0871008A2 (en) Device for measuring the dimensions of an object that is very extensive longitudinally and whose cross section has a curved contour
TW362148B (en) Method and apparatus for recognition and distinction of clapboard in the storage box and the allocated object thereof
DE3528047C2 (en)
DE3919893A1 (en) Method and device for contactless measurement of deformations (distortions) on surfaces
US6067162A (en) Process for measuring the roughness of a material surface
DE102004022637B4 (en) Optical method and apparatus for measuring non-concave cross-sectional areas
DE19736588A1 (en) Opto-electronic distance measuring unit with beam transmitted from measuring unit head, e.g. for CCD camera
DE10339499A1 (en) Device for determining the volume of conveyed goods

Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20030327

R150 Term of protection extended to 6 years

Effective date: 20030714

R151 Term of protection extended to 8 years

Effective date: 20060727

R152 Term of protection extended to 10 years

Effective date: 20080725

R071 Expiry of right