Patent ID: 6739807
Filing Date: 2004-05-25
Classification: B23C,Y10T

Abstract:
A rotatable cutting tool for releasably retaining at least one replaceable insert for machining valve seats of cylinder heads of internal combustion engines, the insert being retained in the tool to expose a cutting edge of the insert, the tool comprising a tool body defining an axis of rotation and including a nose portion in which a reamer is mounted to project forwardly along the axis for machining a valve stem guide bore, the tool body having at least one recess for receiving the replaceable insert, an elastically deformable clamp extending radially from the tool body and defining one wall of an insert receiving recess and an adjustable clamping means for deforming the clamp to releasably retain the replaceable insert in the recess, the elastically deformable clamp comprising a leaf, the leaf being defined by the insert receiving recess and an isolating channel isolating the leaf from the tool body except at the base of the leaf, the leaf extending axially for a shorter distance than the insert wherein opposite front and rear axial end portions of the insert project axially past the leaf, the insert being adjustable in a direction parallel to the axis, and an adjustable stop arranged to engage the axial rear end portion of the insert for defining an axially adjusted position of a front portion of the cutting edge that extends axially forwardly past the recess.