Numerical controller and numerical control program

Abstract

A numerical controlleraccording to an aspect of the present disclosure does not require excessive speed and acceleration yet suppress errors in movement paths, and in accordance with a machining program containing a plurality of command blocks that each specify a designated speed of a target, controls a machining device having a plurality of driving axes for driving the target. The numerical controllercomprises: a synthetic speed calculation unitthat, for at least a curve block which designates curve movement and which is from among the plurality of command blocks, calculates a synthetic speed that is revised so that the designated speed is initially accelerated from zero by a prior revision time constant and finally decelerated to zero by the prior revision time constant; and a prior revision speed calculation unitthat calculates a prior revision speed of each driving axis for each time to realize the synthetic speed.