| 摘要 |
An index device for a machine tool includes a rotary shaft (40) to which a drive object is attached, a housing (30) surrounding the rotary shaft (40), a bearing (B1, B2) secured between the housing (30) and the rotary shaft (40) by a securing member (30b), and drive means (M) provided around the rotary shaft (40) and including a rotor (M1a, M2a) and a stator (M1b, M2b). The stator (M1b, M2b) is attached to the housing (30) and the rotor (M1a, M2a) is attached to the rotary shaft (40). The rotary shaft (40), the bearing (B1, B2), the rotor (M1a, M2a), and the securing member (30b) are connected together to form a built-in unit (22). A casing member (30a, 31a) of the housing (30) and the stator (M1b, M2b) are connected together and a cable (c11, c11) for the stator is led out from the side opposite the securing member (30b) to form an enclosure unit (21). The built-in unit (22) is connected to the enclosure unit (21) such that the built-in unit (22) can be inserted into and extracted from the enclosure unit (21), thus facilitating connection and disconnection of wiring between the stator of a DD motor mounted in a spindle head of a machine tool and a main body of the machine tool. |
