Measuring instrument for checking dimensional accuracy
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United States of America Patent
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Jan 15, 2002
Grant Date -
N/A
app pub date -
Apr 21, 2000
filing date -
Apr 28, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An instrument for checking dimensional accuracy of a surface or a toothing of a workpiece comprises a measuring head with two diametrically opposite, radially movable checking elements which bear against a surface to be checked and the radial movements of which, caused by irregularities of the surface, are transmitted to a perpendicular drive needle. The movement of the drive needle is registered by a measurement sensor. The axial movement of the measuring head in the workpiece is registered by a travel sensor. The measurement sensor and travel sensor are electronic components, the measurement signals of which can be processed and displayed by electronic data-processing apparatus.
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