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1. (WO1991006826) CALIBRATION OF MEASURING APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006826 International Application No.: PCT/GB1990/001618
Publication Date: 16.05.1991 International Filing Date: 22.10.1990
Chapter 2 Demand Filed: 26.04.1991
IPC:
G01B 11/00 (2006.01) ,G01B 21/04 (2006.01) ,G01S 17/87 (2006.01)
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11
Measuring arrangements characterised by the use of optical means
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
21
Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the other groups of this subclass
02
for measuring length, width, or thickness
04
by measuring coordinates of points
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
87
Combinations of systems using electromagnetic waves other than radio waves
Applicants:
LK LIMITED [GB/GB]; East Midlands Airport Castle Donington Derby DE7 2SA, GB (AllExceptUS)
BURY, James [GB/GB]; GB (UsOnly)
Inventors:
BURY, James; GB
Agent:
DREVER, Ronald, Fergus; Swindell & Pearson 48 Friar Gate Derby DE1 1GY, GB
Priority Data:
8923948.724.10.1989GB
Title (EN) CALIBRATION OF MEASURING APPARATUS
(FR) CALIBRAGE D'APPAREILS DE MESURE
Abstract:
(EN) Calibration of measuring apparatus such as a co-ordinate measuring machine (CMM) (10) is provided. The CMM (10) is mounted on a pallet (14) which is movable to measuring positions (16) to allow a large object (12) to be measured. Laser trackers (20) at fixed positions (18) track a retro device (22) which can move between three points (24) on the pallet (14). By maintaining the beam as the retro (22) moves around the points (24), and as the pallet (14) moves around the positions (18), the relative positions and orientations of the pallet can be accurately determined, to calibrate the CMM measurements. Movement of the retro (22) creates a notional calibration artefact. Other arrangements described use of a physical calibration artefact.
(FR) Calibrage d'appareils de mesure, par exemple une machine de mesure à coordonnées (10) (CMM). La machine de mesure à coordonnées CMM (10) est montée sur une palette (14) mobile en fonction de positions de mesure (16) pour permettre de mesurer un objet de grande dimension (12). Des suiveurs laser (20) en positions fixes (18) suivent un rétro-système (22) pouvant se déplacer entre trois points (24) sur la palette (14). Les positions et les orientations relatives de la palette peuvent être déterminées avec exactitude pour calibrer les mesures de la machine CMM en maintenant le rayon en même temps que le rétro-système (22) se déplace autour des points (24) et que la palette se déplace autour des positions (18). Le mouvement du rétro-système (22) crée un artefact donnant une notion du calibrage. D'autres dispositifs décrits utilisent un artefact de calibrage physique.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0497813