Patent ID: 6769846
Filing Date: 2004-08-03
Classification: B23B,F16D,Y10T

Abstract:
A device for releasably coupling a machine tool support to a drive motor which rotates the machine tool support about an axis, said device comprisinga hollow shaft projection connected to the drive motor, a connection element configured to be received within the hollow shaft projection and being connected to the tool support, a locking device for releasably securing the connection element within the hollow shaft projection and which is actuated by centrifugal force exerted during rotation of the drive motor and tool support, and wherein the locking device comprises at least one locking member which is mounted to the hollow shaft projection for limited radial movement relative thereto so as to engage the connection element in a locking relationship by reason of the centrifugal force, and wherein the at least one locking member includes an oblique surface that is oblique with respect to the axis of rotation and that mates with a corresponding oblique surface on the connection element such that a portion of the centrifugal force is deflected to an axial force upon the tool support.