Experimental Research Concerning the Contact Patch of the Worm Face Gear with Modified Geometry

Abstract

This paper presents the contact patch resulting during the engagement in the worm face gears with modified geometry. The worm face gears, a gear known as spiroid, which was the subject of research is composed of a cylindrical worm flank with equal pressure angles which drives a wormgear face plane. The study of the contact between gear teeth was done for two combinations of materials: a hardened steel worm gear and the wormgear of cast iron and the other case a hardened steel worm and wormgear of steel in improved condition. The gears mounted in two gears have undergone a test upload and then the contact stains that occurred on teeth flanks wormgears were analyzed. This element highlights the mode of transmission of the load during operation an indicator of the quality of this gear in terms of loading. The tests have been made for the worm drive highlighting the behavior on both flanks of the wormgear face plane.

Keywords

• worm face gear
• spiroid gear