Dressing tool for profiling the tip area of a threaded grinding wheel

1. Dressing tool for profiling only the tip area of a threaded grinding wheel used for continuous generation grinding, said tool comprising:

concave working faces ( 13 ) arranged in a cylindrical surface of the dressing tool ( 7 ) at a pitch (P), said working faces ( 13 ) being coated with an abrasive coating with said pitch (P) corresponding to the pitch of the grinding wheel ( 3 ), the dressing tool ( 7 ) being positionable into rolling engagement with the grinding wheel ( 3 ) under crossed axes.

2. The dressing tool of claim 1 being connectable in an axially fixed and non-rotatable fashion together with a gear wheel-shaped dressing gear wheel ( 6 ) to a work piece spindle ( 1 ) of a machine suitable for continuous generation grinding.

3. The dressing tool of claim 2 being coaxially connectable in a non-rotatable fashion to the gear wheel-shaped dressing wheel ( 6 ) to form a tool unit, said tool unit ( 6 , 7 ) being connectable to the work piece spindle ( 1 ) of the machine in an axially fixed and non-rotatable fashion.

4. The dressing tool of claim 3 , wherein the center of the tooth spaces of the dressing gear wheel ( 6 ) and the center of the concave working faces ( 13 ) of the dressing tool ( 7 ) are positioned on a common helical surface.

5. The dressing tool of claim 3 wherein the tool unit is developed in one piece.

6. The dressing tool of claim 1 wherein the contour of the working faces ( 13 ) corresponds to the desired contour of the tooth base of a gear wheel ( 2 ) to be machined with the grinding wheel ( 3 ).