Numerical controller and synchronous control method using numerical controller
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United States of America Patent
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Jul 20, 2010
Grant Date -
Jul 31, 2008
app pub date -
Dec 31, 2007
filing date -
Jan 5, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A conveyer for transporting a box and a conveyer for transporting a bottle are driven along a follow-up target axis and a follow-up axis, respectively. The follow-up axis is accelerated from a synchronization start position, and, when the follow-up axis velocity catches up with the conveyer, performs the constant velocity operation. An advanced operation, performed by an asynchronous axis (moving the bottle closer to the box), is started before synchronization completes, and is completed when synchronization completes, then immediately an operation by a synchronous axis (follow-up target axis or follow-up axis) is started (insertion operation). The point of time when the advanced operation is started is determined by processing of the numerical controller, as a point of time when the time required for the follow-up axis in the current status to reach the synchronization completion status becomes the same as the time required for the advanced operation (preset).
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