Method for dressing or profiling of an essentially cylindrical grinding worm

Abstract

Method for dressing or profiling an essentially cylindrical grinding worm on a machine suitable for continuous generating grinding in the diagonal method. The method comprises providing an essentially cylindrical gear used as a dressing tool with the dressing tool being provided with an abrasive coating on that surface which is active in the dressing process and bringing the dressing tool into contact with the grinding worm and profiling at least one flank of the grinding worm in a tangential or diagonal method.

What is claimed is:  
     
         1 . A method for dressing or profiling an essentially cylindrical grinding worm on a machine suitable for continuous generating grinding in the diagonal method, said method comprising: 
 providing an essentially cylindrical gear used as a dressing tool with said dressing tool being provided with an abrasive coating on that surface which is active in the dressing process,    bringing said dressing tool into contact with the grinding worm and profiling at least one flank of the grinding worm in a tangential or diagonal method.    
     
     
         2 . The method of  claim 1  wherein the dressing tool is chucked on a workpiece spindle and that the existing axes of the machine are used for generating dressing motion between the dressing tool and the grinding worm.  
     
     
         3 . The method of  claim 1  wherein the dressing tool is provided with a helix angle independent of the helix angle of the workpiece to be ground.  
     
     
         4 . The method of  claim 1  wherein the dressing tool dresses single or multi start grinding worms.  
     
     
         5 . The method of  claim 1  wherein the machine used for the dressing process is set up as a hobbing machine for hobbing worm wheels using the tangential method or set up for diagonal milling of cylindrical gears and wherein the parameters of feed, advance, and number of revolutions of the grinding worm have to be coordinated with the dressing.  
     
     
         6 . The method of  claim 1  wherein the grinding worm is rotated during the dressing operation at any number of revolutions.  
     
     
         7 . The method of  claim 1  wherein the grinding worm is rotated during the dressing operation at the number of revolutions at which it is rotated during the subsequent grinding operation of the workpiece.  
     
     
         8 . The method of  claim 1  wherein both flanks of the grinding worm are dressed in a single pass.  
     
     
         9 . The method of  claim 1  wherein the grinding worm is being dressed or profiled in the tangential method or the diagonal method with a small axial component and that the dressing tool is displaced relative to the grinding worm in the direction of the dressing tool axis after a certain number of dressing or profiling operations and is rotated corresponding to the enveloping screw of the dressing tool and further dressing or profiling operations are subsequently performed.