Measuring apparatus and method for correcting errors in a machine
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United States of America Patent
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N/A
Issued Date -
May 6, 2004
app pub date -
Jun 25, 2003
filing date -
Mar 31, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
[Subject] To provide a measuring apparatus of positions and postures of a machine for correcting positions and postures of an end effecter by means of an actuator, and an error correcting method for correcting errors thereof. [Means for Solution] At least three universal joint fixing members 2 are attached onto a base 1 that comprises a measuring reference; steel balls 3 are fixed to the respective universal joint fixing members 2 as universal joints; a steel ball 5 is fixed to an universal joint fixing member 9 as an universal joint; an universal joint fixing member 4 is attached to an object to be measured 7 that is supported by means of another member; and a measuring device 6 is attached to between the steel balls B3 (sic.) and the steel ball 5. By using such a measuring apparatus, geometrical errors of a mechanism in a machine are estimated and corrected based on measured values on positions and postures of the end effecter.
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