| 摘要 |
A device for preventing unintentional relative movement between a tool spindle (10) and a tool holder (11) or the like mounted thereon, comprising a sleeve-shaped member (12) fixedly connectible to the tool holder (11) or formed integrally therewith, said member having an opening (26) in which the tool spindle (10) is insertable, and at least one cavity (27) which is open towards the said opening (26) and in which a disk (28) having an arcuate periphery is eccentrically mounted by means of a pin (29) extending transversely of the plane of the disk. The disk (28) is rotatable between a first position in which the arcuate periphery engages the tool spindle (10) so that, when the spindle (10) and the tool holder (11) tend to move relative to the sleeve (10) connected therewith, the said arcuate periphery is tightened to engage the spindle (10) to an extent increasing with said movement, and a second position out of engagement with said spindle (10) so that the sleeve (12) and thus the tool holder (11) can be removed from the spindle. By inclining the rotatable disk (28) relative to the longitudinal axis of the tool spindle (10), relative movement in both the peripheral direction and in the axial direction may be prevented. |
