| 摘要 |
An index table assembly includes a rotary table (2), a frame (1) separated from the rotary table in the direction of a rotational axis (15) of the rotary table, and first (9) and second bearings (10,16) disposed between the rotary table and the frame. The rotary table has a workpiece-receiving surface (2a) on one side and a through hole (2c) at a rotational center of the rotary table, the through hole having a step portion (2d) extending toward the rotational center in the middle of the through hole, and the frame includes a shaft portion (1a) extending through the step portion and a bearing support (7) detachably attached to the shaft portion, the bearing support facing a surface (2e) of the step portion on the same side as the workpiece-receiving surface of the rotary table. The first bearing (9) is positioned between a surface (2b) of the rotary table on the side opposite to the workpiece-receiving surface and the frame, and the second bearing (10,16) is positioned between the surface of the step portion on the same side as the workpiece-receiving surface (2a) and the bearing support (7). |
