Crossed helical gears have an important position in power transmission.
Important advantages of the crossed helical gears are the small design, the
realization of high ratios in one stage, and the low noise characteristics.
The paper presents a theoretical and experimental research of mesh
efficiency, tooth friction coefficient and wear for a wheel of crossed
helical gears made of Fe1.5Cr0.2Mo sintered steel with sinter-hardening
treatment and without additional treatment. The calculation method is also
given for the determination of wear load capacity of the worm with a helical
gear made of Fe1.5Cr0.2Mo sintered steel with sinter-hardening treatment.
These results provide product developers with the first important clues for
indicators for calculation of the worm with a helical gear.