Method for machining a coated frictional contact surface made of electrically conductive material, and electrode for electrochemical machining

Abstract

The invention relates to a method for machining a coated, subtantially cylindrical frictional contact surface ( 2 ) made of electrically conductive material. In said method, the frictional contact surface ( 2 ) is machined in an electrochemical manner. Also disclosed is an electrode ( 3 ) for electrochemical machining.

1 . A method for machining a coated, substantially cylindrical frictional contact surface ( 2 ) of electrically conductive material, said method comprising:
 machining the frictional contact surface ( 2 ) in an electrochemical manner.   
   
   
       2 . The method according to  claim 1 , wherein the frictional contact surface ( 2 ) is machined in a geometrically noncircular manner in its cross section by the electrochemical machining. 
   
   
       3 . The method according to  claim 1 , wherein the frictional contact surface ( 2 ) is made geometrically oval in its cross section by the electrochemical machining. 
   
   
       4 . The method according to  claim 1 , wherein the frictional contact surface ( 2 ) defined by the electrochemical machining is microstructured. 
   
   
       5 . The method according to  claim 1 , wherein, during the electrochemical machining, a machining electrode ( 3 ) and the frictional contact surface ( 2 ) to be machined are moved relative to one another. 
   
   
       6 . An electrode ( 3 ) for electrochemical machining, wherein the electrode is formed in a conical manner, and wherein the electrode ( 3 ) comprises an oval cross section. 
   
   
       7 . The electrode ( 3 ) according to  claim 6 , wherein the electrode ( 3 ) comprises a tubular cross section. 
   
   
       8 . The electrode ( 3 ) according to  claim 6 , wherein the area of the electrode surface, which is electrochemically active during the electrochemical machining, comprises microstructuring. 
   
   
       9 . The method according to  claim 5 , wherein the machining electrode ( 3 ) and the frictional contact surface ( 2 ) to be machined are moved relative to one another in at least one of a translatory, rotary and oscillatory manner.