An Approach for Determination of Basic Machine Tool Settings From Blank Data in Face Hobbed and Face Milled Hypoid Gears

Abstract

The conditions of meshing and contact in hypoid gear drives depend substantially on the machinetool settings to be applied. Determination of gear geometry is the first step in the design process of a hypoid gear drive. An approach for determination of basic machinetool settings for facehobbed and facemilled hypoid gears is proposed, covering the cases when the gear is generated and nongenerated. Gear basic machinetool settings are determined from the blank data that can be obtained from application of Standard ANSI/AGMA 2005C96. Some machinetool settings are determined analytically considering the imaginary generation of the gear by a crown gear. Some other machinetool settings are obtained numerically in order to provide some given blank data as the normal chordal tooth thickness and the normal pressure angles of the gear teeth. The developed theory is illustrated with numerical examples.