Moving gantry machine having uprights movable relative to each other
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United States of America Patent
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Nov 24, 1998
Grant Date -
N/A
app pub date -
Dec 27, 1996
filing date -
Dec 29, 1995
priority date (Note) -
Expired
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Abstract
The invention relates to a moving gantry machine having uprights that are movable relative to each other. The uprights are interconnected by a cross-member made up of two cross-member elements suitable for being moved relative to each other in the limit of a given maximum offset .DELTA. in the displacement direction of the uprights. The displacement of the uprights is controlled by respective independent drive systems X.sub.1 and X.sub.2 under numerical control within the limit of said offset. A third drive system X.sub.3 is provided for displacement between the cross-member elements and is under numerical control with the condition the displacement distance of drive system X.sub.1 +the displacement distance of drive system X.sub.3 =the displacement distance of drive system X.sub.2.
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