Patent ID: 6912763

Claim:
A clamping connection for an interchangeable mandrel and a drive shaft of a riveting tool comprising a connecting casing to which an end of the drive shaft is fastened on a first side, while on a second side there is an open cavity in the casing adapted for inserting an end of the interchangeable mandrel in a transverse direction until an expanded end part of the interchangeable mandrel is inside the cavity and an axis of the interchangeable mandrel lies along a common axis of the drive shaft and the casing, the interchangeable mandrel in this position being moveable in the direction of the common axis by the action of a pressure element across engaging, rolling surfaces arranged on a front surface of the expanded end part of the interchangeable mandrel and on an adjacent surface of the pressure element, to a clamped position wherein the expanded end part of the interchangeable mandrel is gripped in the cavity of the casing by a correspondingly shaped surface, arranged in the cavity of the casing, whereby the interchangeable mandrel may have axial movement and secured against rotation.