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1. WO2006100508 - MEASUREMENT PROBE

Publication Number WO/2006/100508
Publication Date 28.09.2006
International Application No. PCT/GB2006/001095
International Filing Date 24.03.2006
IPC
G01B 7/012 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
7Measuring arrangements characterised by the use of electric or magnetic means
004for measuring coordinates of points
008using coordinate measuring machines
012Contact-making feeler heads therefor
CPC
G01B 7/012
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
7Measuring arrangements characterised by the use of electric or magnetic means
004for measuring coordinates of points
008using coordinate measuring machines
012Contact-making feeler heads therefor
Applicants
  • RENISHAW PLC [GB]/[GB] (AllExceptUS)
  • HELLIER, Peter, Kenneth [GB]/[GB] (UsOnly)
  • MCMURTRY, David, Roberts [GB]/[GB] (UsOnly)
Inventors
  • HELLIER, Peter, Kenneth
  • MCMURTRY, David, Roberts
Agents
  • JACKSON, John, Timothy
Priority Data
0506158.524.03.2005GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MEASUREMENT PROBE
(FR) SONDE DE MESURE
Abstract
(EN)
A probe for position determining apparatus has a probe body (18) and a workpiece-contacting stylus (14). A strain sensitive structure connects the probe body and the stylus, and includes bendable members (32). The bendable members have an asymmetric cross-section, e.g. 'T' shaped. A strain gauge (33) is mounted to the stem of the 'T' to detect the bending caused when the stylus contacts a workpiece. This enables the strain sensitive structure to be both robust and sensitive to the bending.
(FR)
Cette invention concerne une sonde pour appareil de détermination de position comprenant un corps de sonde (18) et un palpeur en contact avec une pièce (14). Une structure sensible aux contraintes connecte le corps de sonde et le palpeur et comprend des éléments flexibles (32). Les éléments flexibles présentent une section transversale asymétrique, par exemple en forme de 'T'. Une jauge extensométrique (33) est montée sur la tige du 'T' pour détecter la flexion causée lorsque le palpeur touche une pièce. Cette invention permet à la structure sensible aux contraintes d'être à la fois solide et sensible à la flexion.
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