| 摘要 |
Hydromechanical clamping device which in one end thereof is designed as a mandrel pin with an outer envelope surface onto which one or more tools may be mounted. The mandrel pin 5 comprises outer expanding means ( 6 ), the outer surface of which consisting of said envelope surface, with a relatively thin, radially expandable wall and a conical inner surface in the axial direction, the mandrel pin further comprising a centre pin ( 8 ), the outer diameter of which being smaller than 10 the diameter of the inner surface of said means, wherein in the space between the centre pin ( 8 ) and the expanding means there are arranged intermediate means ( 7 ) connected to a piston ( 9 ). The intermediate means ( 7 ) are displaceable in the axial direction by means of hydraulically operating means, 15 wherein the intermediate means ( 7 ) and the outer expanding means ( 6 ) have interacting conical surfaces which at axial displacement of the intermediate means in one direction cause radial expansion of the outer expanding means ( 6 ), wherein axial displacement of the intermediate means in the other 20 direction causes relief with radial contraction of the outer expanding means ( 6 ). |
