Touch probe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Feb 25, 1991
filing date -
Feb 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A touch trigger probe for a coordinate measuring machine or machine tool has a stylus (14), which is biased into a rest position. The stylus has two independent supports, provided within a housing (10). In the embodiment of FIG. 1, the first support comprises a skirt (18) of a stylus holder (12), which is axially constrained on a surface (20) of the housing (10). The second support comprises a kinematic arrangement of cylinders (34) and balls (36), together with a planar spring (30), which together provide lateral constraint. The first support is biased by a much lighter force than the second support, so that its friction is very low. This reduces the lobing and hysteresis of the stylus movement, and thereby increases the accuracy of the probe.
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Cited Art Landscape
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