| 摘要 |
A tool holder spindle (1) comprising a shaft (4), a spindle body (2) comprising at least one bearing (3) within which the shaft (4) is journalled for rotation relative to the spindle body (2), a tool holder (5) for holding a tool, and an axially moveable actuator portion (6) disposed within the shaft for actuating the tool holder. The tool holder (5) being mounted within the shaft (4) and comprising: a tool receiving portion (B) having at least one deformable tool gripping portion (55); and at least one wedge portion (58) arranged to act on the deformable tool gripping portion (55) and arranged for axial movement relative to the tool receiving portion under action of the axially moveable actuator portion (6), wherein axial movement of the actuator portion (6) in a first direction causes axial movement, relative to the tool receiving portion (B), of the wedge portion (58) in a first direction so deforming the tool gripping portion inwards towards the axis of the spindle for gripping a received tool. |
