Tool holder, rotation tool, and combination of tool holder and tool

Abstract

A tool holder has a base element, a deformable receiver for clamping a tool and at least one locking element configured for preventing an axial extraction of the tool from the tool holder through engaging a corresponding opposite element at the tool. The at least one locking element is integrally configured in one piece with the receiver.

1 . A combination of a tool holder and a rotation tool, the combination comprising:
 a rotation tool having a shaft with an end face and a circumferential surface;   a tool holder having a clamping chuck being a deformable receiver for receiving and clamping the rotation tool in a central axial opening thereof;   a pullout preventer configured to lock said rotation tool in said tool holder against an axial migration out of said central axial opening of said tool holder;   said pullout preventer including at least one locking element, being a part of said tool holder, and at least one locking groove formed in said rotation tool, with said at least one locking groove and said at least one locking element being complementarily formed and disposed to engage one another and to lock said rotation tool against the axial migration out of said tool holder.   
     
     
         2 . The combination according to  claim 1 , wherein said locking element is configured to project inward into said central axial opening in said tool holder and into said locking groove in said shaft of said rotation tool when said rotation tool is mounted in said tool holder. 
     
     
         3 . The combination according to  claim 2 , wherein said at least one locking groove begins at said end face and extends in said circumferential surface from said end face in a straight linear path, in a curved path, in an L-shaped path, or in a composite path with a plurality of segments. 
     
     
         4 . The combination according to  claim 2 , wherein said locking element is a forward head of a locking element being a pin projecting through support bore hole formed in a wall of said tool holder and into said locking groove. 
     
     
         5 . The combination according to  claim 1 , wherein said locking element is integrally formed with said receiver. 
     
     
         6 . The combination according to  claim 1 , wherein said at least one locking element and said at least one locking groove are configured at least as a partial ball head. 
     
     
         7 . The combination according to  claim 1 , wherein said at least one locking groove is one of at least two locking grooves and said at least one locking element is one of at least two locking elements. 
     
     
         8 . The combination according to  claim 7 , wherein said at least one locking groove is one of four circumferentially distributed locking grooves and said at least one locking element is one of four locking elements. 
     
     
         9 . The combination according to  claim 1 , wherein said at least one locking groove has a helical surface path having a left pitch direction for the rotation tool with a left groove, and a right pitch direction for the rotation tool with a right groove. 
     
     
         10 . The combination according to  claim 1 , wherein said clamping chuck is a draw-in collet chuck, a precision chuck, a hydraulic expanding chuck, or a shrink fit chuck. 
     
     
         11 . A rotation tool, comprising:
 a shaft with an end face and a circumferential surface, and a tool head opposite said shaft;   said shaft being formed for insertion into a tool holder with a clamping chuck for driving rotation of the tool about a rotation axis;   said shaft of said rotation tool being formed with at least one locking groove that begins at said end face and extends in, and terminates in, said circumferential surface; and   said locking groove being formed for engagement by a locking element of the tool holder, that locks the rotation tool against an axial migration out of said tool holder.   
     
     
         12 . The rotation tool according to  claim 11 , wherein said locking groove extends along a path that is non-parallel to the rotation axis in a straight linear path, in a curved path, in an L-shaped path, or in a composite path formed in mutually different shapes that are linearly offset from one another; 
     
     
         13 . The rotation tool according to  claim 11 , wherein said at least one locking groove is formed to receive and mesh with a partial ball head. 
     
     
         14 . The rotation tool according to  claim 11 , wherein said at least one locking groove is one of at least two locking grooves formed in said shaft diametrically opposite one another relative to the rotation axis. 
     
     
         15 . The rotation tool according to  claim 11 , wherein said at least one locking groove has a helical surface path with a left pitch direction of the rotation tool with a left groove, and a right pitch direction for the rotation tool with a right groove. 
     
     
         16 . The rotation tool according to  claim 11 , configured for insertion in a draw-in collet chuck, a precision chuck, a hydraulic expanding chuck, or a shrink fit chuck. 
     
     
         17 . A tool holder for a rotation tool, the tool holder comprising:
 a clamping chuck formed with a central axial opening for receiving and clamping the rotation tool therein;   a locking element disposed to project into said central axial opening;   said central axial opening forming a receiver for receiving a shaft of a rotation tool therein, wherein the shaft is formed with a locking groove configured to engage with said locking element that projects into said central opening and said locking element is configured to mesh with the locking groove and to lock said rotation tool against an axial migration out of said tool holder.   
     
     
         18 . The tool holder according to  claim 17 , wherein said clamping chuck is formed with at least one support bore hole extending radially from an exterior thereof and into said central axial opening, and a pin configured for insertion into said support bore hole is formed with said locking element that projects into said central axial opening and into the locking groove of the rotation tool when the rotation tool is mounted in the tool holder. 
     
     
         19 . The tool holder according to  claim 17 , wherein said at least one locking element is one of at least two, at least three, or four locking elements projecting into said central axial opening and distributed about a rotation axis of the tool holder. 
     
     
         20 . The combination according to  claim 17 , wherein said locking element is integrally formed with said receiver.