Surface-sensing device
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United States of America Patent
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-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Oct 16, 1989
filing date -
Feb 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure pertains to a probe head (PH) for use in coordinate measuring machines and having a stylus (10) supported for axial displacement (D1) and angular displacements (D2,D3). A transducer (T1) senses axial forces (F1) on the sensing end (11) of the stylus due to engagement therefore with a workpiece 12. A strain gauge system (16) provided on the stylus senses transverse forces (F2) on the sensing end (11) of the stylus. The forces (F1,F2) are used to determine the orientation of the surface (12A) of the workpiece and a control system is described which responds to those forces to maintain the stylus normal to said surfce (12A) during a scanning operation.
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Cited Art Landscape
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