Tool for Removing Drill Cores from Hammer Drill Bits

Abstract

An attachment for removing a drill core from a hollow volume of a hollow drill bit, comprising an attachment sheath embodied to be arranged at an accepting shaft comprising at least one ejection element, which is embodied in the hollow volume of the hollow drill bit and designed for transferring a force upon the drill core.

1 . An attachment for removing a drill core from a hollow volume of a hollow drill bit, said attachment comprising
 an attachment sheath embodied for fastening at an accepting shaft having at least one ejection element, which is embodied to engage the hollow volume of the hollow drill bit and for transferring a force upon the drill core.   
     
     
         2 . An attachment according to  claim 1 , wherein the attachment sheath is embodied as a centering sheath. 
     
     
         3 . An attachment according to  claim 1 , wherein the ejection element is embodied as an ejection pin. 
     
     
         4 . An attachment according to  claim 1  wherein in an impingement part to be arranged and moved in a guided fashion between a distant position and an impact area. 
     
     
         5 . An attachment according to  claim 4 , wherein the impingement part is embodied to transfer a force impacting the attachment sheath. 
     
     
         6 . An attachment according to  claim 4 , wherein the impingement part is embodied to transfer an impacting force upon the ejection element. 
     
     
         7 . An attachment according to  claim 1  wherein the attachment comprises a multitude of ejection elements arranged annularly on a face area of the attachment sheath. 
     
     
         8 . An attachment according to  claim 1  wherein the attachment sheath comprises a sheath slot in the axial direction. 
     
     
         9 . An attachment according to  claim 4 , wherein the impingement part comprises a longitudinal slot in the axial direction. 
     
     
         10 . A tool comprising:
 a hollow drill bit;   an accepting shaft; and   a clamping area, wherein the hollow drill bit comprises a face area at the accepting side, which shows at least one penetrating opening for the engagement of an ejection element.   
     
     
         11 . A tool according to  claim 10 , wherein the hollow drill bit comprises a multitude of penetrating openings at the accepting side, with the penetrating openings being arranged annularly on the facial area. 
     
     
         12 . A system including:
 a hollow drill bit;   an accepting shaft;   a clamping area, wherein the hollow drill bit comprises a face area at the accepting side, which shows at least one penetrating opening for the engagement of an ejection element; and   an attachment sheath embodied for fastening at an accepting shaft having at least one ejection element, which is embodied to engage the hollow volume of the hollow drill bit and for transferring a force upon the drill core.   
     
     
         13 . The system of  claim 12  wherein in that the hollow drill bit comprises a penetrating hole, which is formed such that an ejection element may engage a hollow volume of the hollow drill bit in order to transfer an impacting force upon a drill core. 
     
     
         14 . A method for removing a drill core from a hollow drill bit, said method comprising:
 arranging an attachment sheath with at least one ejection element at an accepting shaft so that the ejection element engages a hollow volume of a hollow drill bit and contacts a drill core;   arranging an impingement part at the attachment sheath between a distant position and an impact area; and   moving the impingement part between the distant position and the impact area such that a force of the impingement part is transferred via the attachment sheath and/or the ejection element upon the drill core located in the hollow drill bit and thus the drill core is ejected from the hollow drill bit.   
     
     
         15 . A method according to  claim 14 , wherein the arrangement of at least one of the attachment sheath and the impingement part occurs by laterally plugging it on. 
     
     
         16 . A method according to  claim 14 , wherein the arrangement of at least one of the attachment sheath and the impingement part occurs by way of plugging on from the rear.