Joint axis for coordinate measurement machine
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United States of America Patent
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Dec 1, 2009
Grant Date -
Jan 15, 2009
app pub date -
Dec 21, 2007
filing date -
Dec 22, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
One aspect of the present invention comprises a coordinate measurement apparatus that includes an articulated arm having a first end, a second end, and plurality of jointed arm segments therebetween, each arm segment including at least one position transducer. A measurement probe assembly is coupled to the second end of the arm. The measurement probe assembly comprises a first joint providing a first axis of rotation between the second end of the arm and a body of the measurement probe assembly. An encoder includes an encoder housing and an encoder shaft. The encoder housing is configured to rotate about a second axis with respect to the encoder shaft, which is rigidly coupled to the body. A probe is rigidly coupled to the encoder shaft. A measurement device is coupled to the encoder housing such that the measurement device rotates about a second axis with respect to the probe.
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