| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress an error of a machining shape while improving responsiveness from a time point when a special command is inputted to the execution of operation corresponding to the command in a machine tool. <P>SOLUTION: A numerical controller 2 comprises: a path local filter 16 which locally interpolates only an interpolation block spread before and after an interpolation target point in a tool path in such a manner that a differentiation value at the interpolation target point is changed continuously; a parameter time function derivation section 18 which determines a parameter time function on the basis of an acceleration/deceleration condition of a transportation target and the locally interpolated tool path; and a pulse interpolation section 22 in which, when a special command is inputted to a command input device 122, a new reference time is derived by adjusting the length of a reference unit time in accordance with contents of the special command, a transportation amount is determined for each of transportation shafts at an interval of the reference unit time and the transportation amount is defined as a command pulse for each specific term. <P>COPYRIGHT: (C)2013,JPO&INPIT |
