| 摘要 |
1. Set of moulded gears with helical teeth forming a single unit and comprising a set of coaxial tiered pinions of which the teeth have the same helical direction, characterized in that, where Mrn and Mri designate the real moduli of the pinions of any rank n and i, respectively, of the set, Zn and Zi designate the numbers of teeth of said pinions and beta n and beta i designate their helix angles, the following relationship exists between these different parameters : sin beta n = sin beta i Mrn Zn / Mri Zi. |
