| Basics
of Coordinate Metrology Unit 7: Structure of Coordinate Measuring Machines - Stylus System |
Step 6 of 12 |
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| The
triggering stylus system allows a one-step acquisition of measuring data.
During opening/closing of an electric contact, the positions of the machine
axes are read. Triggering probes are pretensioned in a three-point
bearing, which fixes the styli, allowing them to move flexibly in the 6
degrees of freedom of space. The bearings typically designed as electrical
contacts are opened upon contacting the part.
Apart from mechano-electrical
contacts, piezoelectric sensors are also used.
Trigger stylus systems always work dynamically, i.e., at
least one machine axis is moved during probing. These stylus systems are
used wherever fast recording of the measuring point or point-to-point
probing of the part is desired. They are predominantly used in manually
operated measuring machines. |
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Comparison between triggering and measuring stylus system |