Machining apparatus

A machining apparatus, comprising:

• a cover including a front face, the cover further including
• a side plate located at the front face of the cover,
• a projected body connected to the side plate, the projected body disposed below the side plate,
• a front opening having a rectangular shape and located at the front face of the cover and below the side plate, and
• a planar opening having a semicircular shape located above the projected body, the planar opening connected to the front opening;
• a mating surface, which is located, with respect to a first horizontal direction, at a center of the front opening between a first side of the front opening and a second side of the front opening;
• a first door body including
• a first drum disposed in the first side of the front opening,
• a first abutting surface connected to the first drum, and
• a first top plate connected to the first drum and the first abutting surface,
• the first door body configured to be accommodated inside the cover by rotating about a first axis, the first axis offset from the second side of the front opening such that a first virtual straight line that extends from the first axis in a second horizontal direction intersects the second side of the front opening, the first and the second horizontal directions extending perpendicular to one another;
• and
• a second door body including
• a second drum disposed in the second side of the front opening,
• a second abutting surface connected to the second drum, the second abutting surface configured to abut the first abutting surface on the mating surface, and
• a second top plate connected to the second drum and the second abutting surface,
• the second door body configured to be accommodated inside the cover by rotating about a second axis, the second axis offset from the first side of the front opening such that a second virtual straight line that extends from the second axis in the second horizontal direction intersects the first side of the front opening.