| 摘要 |
<p>PURPOSE:To enable a work pallet to be controlled only by a machining program in a machine tool side, by storing a return instruction of the work pallet to a work pallet storage means in the machining program. CONSTITUTION:A return instruction M100 of a work pallet 9 to a work pallet storage means 10 is left as stored in a machining program PRO. And when this return instruction M100 is read, on the basis of arranged conditions of the work pallets 9 in a pallet changer 3 and a machine tool 2, the optimum action pattern is determined from plural prepared return action patterns. And on the basis of this determined action pattern, it is constituted that return action of the work pallet 9 to the work pallet storage means 10 is performed. That is, the return action of the work pallet 9 to the work pallet storage means 10 is executed on the basis of the instruction stored in the machining program PRO.</p> |
