Patent ID: 9683647
Date: 2017-06-20
CPC Classifications: B23P,F01D,F05D,F16B,F16D,F16H,Y10T

Claim:
1. Method for making a pinion for being assembled on a turbine axis of an internal combustion engine, comprising at least one step of making a pinion in a single piece having axial symmetry, equipped with an annular toothed part ( 2 ) and with an axial part ( 1 ) coaxial with said annular part ( 2 ) and provided with a coaxial hole (H) with a thread (TH 1 ) to screw the pinion (P) on said axis (SH) of the turbine, the method comprising a procedure to make said thread (TH 1 ) in order to have localized pitch variations and further comprising the following steps: widening of a portion of coaxial hole (H) for a limited and predefined extension (EA making of at least one further partial cut (C