METHOD FOR CUTTING WORM AND WORM GEAR IN A WORM AND GEAR REDUCTION UNIT WITH CIRCULATION OF BEARING BALLS AND RELATED CUTTING TOOLS

摘要

A method for cutting worm and worm wheel in a worm-gear reduction unit ( 1 ) with circulation of bearing balls, comprising the steps of: (a) obtaining races ( 30 ) for the bearing balls ( 4 ) onto the worm wheel ( 3 ); and (b) obtaining races ( 20 ) for the bearing balls ( 4 ) onto the worm ( 2 ), wherein step (b) provides the cutting of the races ( 20 ) according to a cutting profile substantially corresponding to the envelope of the subsequent positions assumed by the bearing balls within the worm wheel races being formed.