The machining apparatus includes: a cover including a side plate, a projecting portion disposed below the side plate, a rectangular shaped front opening, and a semicircular shaped planar opening; a first door body including a first drum disposed in a first side of a mating surface, a first abutting surface connected to the first drum, and a first top plate, and accommodated inside the cover by rotated about a first axis; and a second door body including a second drum disposed in the second side of the mating surface, a second abutting surface abut to the first abutting surface on the mating surface, and a second top plate, and accommodated inside the cover by rotated about a second axis.

The machining apparatus includes: a cover including a side plate, a projecting portion disposed below the side plate, a rectangular shaped front opening, and a semicircular shaped planar opening; a first door body including a first drum disposed in a first side of a mating surface, a first abutting surface connected to the first drum, and a first top plate, and accommodated inside the cover by rotated about a first axis; and a second door body including a second drum disposed in the second side of the mating surface, a second abutting surface abut to the first abutting surface on the mating surface, and a second top plate, and accommodated inside the cover by rotated about a second axis.

The present disclosure shows a workpiece lock for an apparatus for handling and/or machining workpieces, which includes a robot for handling and/or machining the workpieces and a safety fence, wherein the work-piece lock has at least one closed position in which the workpiece lock closes an opening in the safety fence, wherein on moving a workpiece from the area within the safety fence to the area outside the safety fence and/or vice versa the workpiece lock has at least one open position in which it at least partly clears the opening in the safety fence. The present disclosure includes a safety function that prevents a movement of the robot into a safety area extending around the workpiece lock within the safety fence, when the lock is in the at least one open position.