Machining apparatus for differential case

A machining apparatus for a differential case, the machining apparatus comprising:

• a shuttle unit that holds the differential case and rotates the differential case;
• a right machining unit and a left machining unit;
• and
• a tool support that supports a first tool for machining the differential case, wherein
• the first tool is configured to machine an inner surface of the differential case while the first tool is supported by the tool support,
• the right machining unit includes a first slide mechanism dedicated for uniaxially sliding in right and left directions, and the left machining unit includes a second slide mechanism dedicated for uniaxial sliding in the right and left directions,
• the shuttle unit comprises an elevating body configured to move in up and down directions and the elevating body holds the differential case, the shuttle unit comprising the elevating body being configured to move in front and back directions,
• the elevating body includes a rotary mount that is configured to hold the differential case and rotate the differential case,
• each of the right machining unit and the left machining unit comprises a second tool, respectively, configured to machine a flange hole of the differential case, or each of the right machining unit and the left machining unit comprises a third tool, respectively, configured to sandwich and hold a cutter between the third tool of the right machining unit and the third tool of the left machining unit, the cutter being configured to machine an end portion surrounding a through hole of the inner surface of the differential case, and
• a cutting edge of the first tool supported by the tool support is configured to spherically cut the inner surface of the differential case that is held by the rotary mount and rotated integrally with the rotary mount while the first tool is supported by the tool support.