| 摘要 |
A clamping sleeve for tools or workpieces intended to be clamped with a truncated conical surface on a preferably cylindrical rotatable portion with a conical surface and to support the tool or workpiece with a substantially cylindrical surface concentric with the truncated conical surface and arranged to coact with a clamping ring. The clamping ring is arranged with threads to be screwed axially in both directions on the preferably rotatable portion. The clamping sleeve can be tightened by the clamping ring be against the conical surface with its truncated conical surface. The conical surface and the cylindrical surface consist of spaced mantles, which are sealingly combined with each other at the top end of the sleeve, forming a cavity open towards the base surface of the sleeve. Moreover, the thrust collar is axially movable at the base surface relative to the sleeve and provided with an axially directed collar, which is arranged to extend into an orifice of the cavity. The cavity is filled with a substantially incompressible medium. With continued turning of the thrust collar after tightening the sleeve against the conical surface, the thrust collar is pressed towards the base surface and consequently presses the collar inwards in the cavity. The medium is then set under an increasing pressure and will press the mantles by a radial force towards the conical surface and the surface of the tool or workpiece corresponding to the substantially cylindrical surface. |
