| 摘要 |
A numerical control device includes a pulse interpolation unit which obtains a position coordinate on respective transfer axes at each time point at every unit time of a reference time, the position coordinate corresponding to a position coordinate of a post-interpolation tool path in a workpiece coordinate system at each time point, and a transfer amount per unit time for the transfer axes from the obtained position coordinate on each transfer axis at each time point, and which sets the obtained transfer amount per unit time as a command pulse per specific period. The pulse interpolation unit obtains an intervening variable at each time point based on an intervening variable time function, obtains a position coordinate of a post-interpolation tool path in the workpiece coordinate system and a position coordinate of a post-interpolation second transfer axis path on a second transfer axis which correspond to the obtained intervening variable at each time point, and obtains a position coordinate on each transfer axis corresponding to the position coordinate of the post-interpolation tool path in the workpiece coordinate system at each time point based on a specific relational expression using the obtained position coordinate on the second transfer axis as a constraint and representing a correlation between a position coordinate of a tool in the workpiece coordinate system and a position coordinate on each transfer axis. |
