| 摘要 |
<p>A numerical control device includes: a path local filter which locally interpolates an interpolation interval among a tool path so that a variation in a differential value at the interpolation object point becomes a continuous variation, the interpolation interval having a specific interval width before and after an interpolation object point; and a pulse interpolation unit which, when a special command which instructs deceleration or acceleration of a transfer object is inputted to a command input device, derives a reference time which proceeds per reference unit time which is shortened or extended at a degree corresponding to the deceleration instruction or the acceleration instruction according to the special command, which obtains, from an intervening variable time function, an intervening variable at each time point at every reference unit time of the derived reference time, which obtains a position coordinate corresponding to the intervening variable at each obtained time point, the position coordinate being a position coordinate on a post-local interpolation tool path in a workpiece coordinate system, which obtains a position coordinate on each transfer axis from the obtained position coordinate at each time point, and which obtains a transfer amount of a support in each transfer axis direction from the obtained position coordinate on each transfer axis, the transfer amount being a transfer amount per reference unit time of the derived reference time, and which sets the transfer amount per reference unit time as a command pulse per specific period.</p> |
