Machining system with interlock circuit

A machining system for machining a workpiece attached to a pallet, the machining system comprising:

• a processing machine for machining the workpiece, the pallet being interchangeably mounted thereto;
• a pallet transfer device for conveying and transferring the pallet;
• a setup station for performing attachment and detachment of the workpiece on the pallet, the setup station comprising an operator door including a partially cylindrical outer door, a partially cylindrical inner door which define concentric circular tracks having different radii and which rotate around a setup table on which the pallet is placed, an outer door cylindrical part provided on a lower end of the outer door, and an inner door cylindrical part provided on a lower end of the inner door, and an interlocking mechanism for rotating the outer door and the inner door in association with each other wherein the outer door cylindrical part and the inner door cylindrical part have equal diameters and are arranged at different heights, thereby the outer door and the inner door are rotated in opposite directions in association with each other so that the rotation angles of the outer door and the inner door are equal so as to maintain an operator side and a pallet transfer device side are isolated from one another at all times;
• and
• a controller for controlling the operations of the processing machine, the pallet transfer device, and the setup station, the controller comprising an interlock circuit configured to prohibit a transfer operation of the pallet transfer device onto the setup table when the operator door is open, and permit a transfer operation of the pallet transfer device onto the setup table when the operator door is closed.