The study on the behavior of the gearbox with worm face gear with modified geometry

This paper present the result of the research concerning the behavior, from the thermal point of view, of the gearbox equipped with worm face gear with modified geometry. The worm face gear with modified geometry, known also as modified spiroid gear, consist of a cylindrical worm, which has equal pressure angle for the flanks of the tooth, conjugated to a planar worm wheel. During the experiment the thermal limit has been determined for the gearbox where the cylindrical worm was made from of alloy steel 42MoCr11x and hardened by nitro-carburizing, and the planar worm wheel made from gray iron Fc250