Patent ID: 8672332
Filing Date: 2014-03-18
Classification: B23B,Y10T

Abstract:
1. A chucking device for a drill tool comprising a two-part adapter sleeve with shells that can be pivoted in relation to each other about a pivoting axis, where the shells are configured to receive a cylindrically shaped drill having one drill tip at each end, wherein the two shells are connected with each other by an elastic connection in the area of the pivoting axis, wherein the pivoting axis runs crosswise to the longitudinal axis of the sleeve, wherein the two shells can be opened at one end of the sleeve, about V-shaped, about a pivoting axis, wherein the two shells are connected with each other by means of a connection in the style of a film hinge, wherein an elastic connecting sleeve in the area of the end of the sleeve of the adapter sleeve assigned to the pivoting axis, wherein the elastic connecting sleeve is configured double-walled by forming a sealing lip on the inside of the sleeve and a sealing lip on the outside of the sleeve, wherein the elastic connecting sleeve features a ring-shaped sealing groove running at the perimeter of the front edge of the end of the sleeve, and wherein the elastic connecting sleeve is deformable by means of a pressurized coolant or lubricant, such coolant or lubricant flowing against the sleeve end of the adapter sleeve, by producing an external seal effect against a chucking chamber wall, and an inner seal effect against a sealing element, such sealing element being located in the adapter sleeve.