METHOD FOR PULSE TYPE KNURLING OF GEAR WHEELS WITH INVOLUTE PROFILE OF TEETH Russian patent published in 2003 - IPC

FIELD: machine engineering, namely processes for making parts by plastic deforming, particularly processes for pulse type cold knurling of involute teeth at discrete feed of tool per one revolution of blank, possibly manufacture of blanks of gear wheels with small allowance, mainly with curvilinear teeth. SUBSTANCE: method for pulse type knurling of gear wheels with involute profile of teeth by means of knurling head axially fed due to periodical engagement of rollers of knurling head with lateral sides of adjacent teeth of gear wheel blank comprises steps of imparting to rollers of knurling head free rotation around their own axes and planetary rotation relative to axis of knurling head; simultaneously imparting to knurling head with two rollers having working surfaces in the form of two different-height truncated cones turned by large bases one to another additional circular motion around axis normal relative to axis of planetary rotation of rollers and discrete feed per one revolution of blank in tangential direction; inclining axes of rollers by angle corresponding to profile angle of initial contour of tool rack. EFFECT: enlarged manufacturing possibilities due to making curvilinear teeth with involute profile. 3 dwg