Tool for the Chipless Shaping Threads, in Particular for the Forming of Internal Threads

Abstract

A tool for chipless shaping of threads has a working part having an exterior side provided with thread grooves. A clamping shaft having a fastening area is provided and the working part is secured on the fastening area. The working part is a component that is nonpositively secured in an axial direction of the clamping shaft on the fastening area of the clamping shaft. The fastening area of the clamping shaft has a cross-section that is smaller than a cross-section of a remainder of the clamping shaft.

1 - 21 . (canceled) 
   
   
       22 . A tool for chipless shaping of threads, the tool comprising:
 a working part having an exterior side provided with thread grooves;   a clamping shaft having a fastening area on which the working part is secured;   wherein the working part is a component that is nonpositively secured in an axial direction of the clamping shaft on said fastening area of the clamping shaft.   
   
   
       23 . The tool according to  claim 22 , wherein said fastening area of the clamping shaft has a cross-section that is smaller than a cross-section of a remainder of the clamping shaft. 
   
   
       24 . The tool according to  claim 23 , wherein said fastening area of the clamping shaft extends up to a free end of the working part. 
   
   
       25 . The tool according to  claim 22 , wherein the working part is a sleeve that is attached to said fastening area in a circumferential direction of the clamping shaft nonpositively; positively; or nonpositively and positively. 
   
   
       26 . The tool according to  claim 22 , wherein the working part is a solid head that has a blind bore for receiving said fastening area of the clamping shaft. 
   
   
       27 . The tool according to  claim 22 , wherein said fastening area of the clamping shaft has a round cross-section. 
   
   
       28 . The tool according to  claim 22 , wherein said fastening area of the clamping shaft has a non-round cross-section. 
   
   
       29 . The tool according to  claim 28 , wherein said fastening area of the clamping shaft has a polygonal shape. 
   
   
       30 . The tool according to  claim 29 , wherein the working part has a larger cross-section than the clamping shaft at least in an area of the thread grooves. 
   
   
       31 . The tool according to  claim 29 , wherein the clamping shaft has a transition where said fastening area passes into a remainder of the clamping shaft and said transition is a bevel or a rounded portion. 
   
   
       32 . The tool according to  claim 22 , wherein said fastening area of the clamping shaft has a stepped configuration. 
   
   
       33 . The tool according to  claim 22 , wherein said fastening area has a tapering cross-section. 
   
   
       34 . The tool according to  claim 22 , wherein the area of the working part provided with the thread grooves has a polygonal shape. 
   
   
       35 . The tool according to  claim 22 , wherein the working part comprises a a lead part. 
   
   
       36 . The tool according to  claim 22 , wherein the working part is soldered onto said fastening area. 
   
   
       37 . The tool according to  claim 22 , wherein the working part is glued onto said fastening area. 
   
   
       38 . The tool according to  claim 22 , wherein the working part is shrink-fitted onto said fastening area. 
   
   
       39 . The tool according to  claim 22 , wherein the working part consists of hard metal. 
   
   
       40 . The tool according to  claim 22 , wherein the clamping shaft is provided with at least one inner cooling medium supply. 
   
   
       41 . The tool according to  claim 22 , wherein the cooling medium supply opens at an end face of the clamping shaft. 
   
   
       42 . The tool according to  claim 22 , wherein the working part rests against an annular section of the clamping shaft.