| 摘要 |
The invention concerns a machine tool comprising a workpiece holding device to perform a surface treatment on the whole workpiece surface. Said device is adapted to support a workpiece (20) to be worked by means of a tool and comprises a support (22; 70) and a structure (24; 60) joined to the support (22; 70), a first tip (16; 56) and a first counter-tip (18; 58), both tips being rotating about a first axis (B) and translating according to a direction parallel to the first axis (B), the first tip (16; 56) and the first counter-tip (18; 58) being adapted to block and rotate the workpiece (20) to be worked about the first axis (B), and gripping and rotating means (12, 14; 52, 54) to grip and rotate the workpiece (20) about a second axis (A), not parallel to the first axis (B). |
