Numerical controller for controlling drilling operation
AssigneeFanuc Corporation
InventorEiji TANOSAKI
Life of this patent
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Abstract
A numerical controller controls a drilling operation. When a feed shaft is decelerated from the constant speed state to a stop state in a drilling operation, a bell-type acceleration/deceleration mode is selected from the constant speed state to a linear deceleration mode where deceleration is carried out at a constant rate, and then a linear deceleration mode in which a deceleration is carried out at the same constant rate as in the linear part, from the linear part to the stop state. Thus, it is possible to carry out a high-speed operation in the vicinity of a portion having a speed of zero around a hole bottom while performing a smooth deceleration.
Claims2
A numerical controller that controls a drilling operation of drilling a workpiece by controlling a spindle rotating a rotation tool and a feed shaft moving the rotation tool, the numerical controller comprising:
- an acceleration/deceleration maintaining section that selects, when the feed shaft is decelerated from a constant speed state to a stop state during the drilling operation, a bell-type acceleration/deceleration mode from the constant speed state to a linear part in which the feed shaft is decelerated at a constant rate, and carries out a linear deceleration in an area from the linear part to a stop state in a manner such that the feed shaft is decelerated at the same constant rate as in the linear part.
Dependencies are inferred from the claim text.