Method for preventing a collision between a part movable along an axis and an obstacle
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United States of America Patent
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Nov 5, 2013
Grant Date -
Oct 2, 2008
app pub date -
Sep 14, 2005
filing date -
Sep 15, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method for preventing the collision of an obstacle and a part movable along at least two axes, which axes each have a feeder drive, includes the steps of a minimum stopping distance being determined repeatedly at predetermined time intervals from the relative location and speed data of the moving part as a function of the machine and part data required for this purpose and taking the minimum stopping distance as the basis for the collision calculation. The collision calculation is based on at least one component, from the components of the stopping distance that are related to the individual axes, which component is determined from the speed data retrieved in the individual time intervals and varied by a maximum acceleration of the associated feeder drive at least during the retrieval time interval.
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