Patent ID: 6834434
Filing Date: 2004-12-28
Classification: B44B

Abstract:
An engraving toolholder comprising:a cylindrical body configured to be held in a collet or endmill toolholder of an engraving machines; a mechanism for holding a toolbit, the toolbit holding mechanism comprising a collet configured to clamp a toolbit therein and a cylindrical body having a front bore section. and a rear bore section extending axially therethrough, an abutment section separating the front bore section and the rear bore section, and a toolbit holder assembly configured to fixedly retain a toolbit in the front bore section of the main body; a mechanism for biasing the toolbit holding mechanism in a direction toward a workpiece when the cylindrical body is held in the engraving machine, the biasing mechanism configured to apply a pressure in response to variations in a surface of the workpiece with respect to the engraving machine to produce an even engraving mark on the workpiece, the biasing mechanism comprising: a retaining member disposed for longitudinal reciprocal translation in the rear bore section of the cylindrical body, the retaining member restrained from rotation within the rear bore section, and a compressible element disposed between the abutment section and the retaining member to apply a biasing force to the cylindrical body in a direction toward a workpiece when the engraving toolholder is held in an engraving machine; and the cylindrical body comprises a portion of the retaining member extending from a rear opening of the rear bore section and configured to be held in a collet or endmill toolholder of an engraving machine.