MANUFACTURING METHOD OF GEAR WHEELS AND MANDREL FOR REALISATION THEREOF Russian patent published in 2009 - IPC B23P15/14 B23Q3/14 

FIELD: production processes.

SUBSTANCE: method refers to manufacture of gear wheels having central hole with spline slots of straight-sided flank and aligned in spline connection as to inner diametre, and involves turning of cylindrical and edge base surfaces, drilling and/or boring of central hole, provision of spline slots, toothing, heat treatment of gear wheel, calibration of lateral sides of spline slots, smoothing of the above cylindrical and edge base surfaces, central hole with location along central hole. When smoothing cylindrical and edge base surfaces, gear wheel is located along lateral sides of spline slots of central hole. Mandrel is made in the form of cylinder with spline teeth of straight-sided flank; at that, root diametre between its teeth is less than minimum allowable dimension of central hole in gear wheel. In order to achieve the same effect, width of spline teeth is made so that it is increased gradually or in steps throughout mandrel length from its value on lead-in end of mandrel to its value on not-go end of mandrel, and external diametre of its spline teeth is less than minimum allowable dimension of external diametre of spline slots in gear wheel; at that, width of teeth on lead-in end of mandrel is less than minimum allowable dimension of width of spline slot in gear wheel, and on not-go end of mandrel it is more than maximum allowable width dimension of spline slot in gear wheel.

EFFECT: improving manufacturing accuracy of gear wheels.

5 cl, 5 dwg