Design and Generation of Straight Bevel Gears

Abstract

Straight-tooth bevel gears are the simplest type of bevel gears that can be used for power transmission between intersecting shafts. They are commonly referred to as straight bevel gears, for brevity. Shafts for power transmission with straight bevel gears are usually mounted at a shaft angle of 90°, but straight bevel gears can be designed to work at a wide range of shaft angles. Bevel gears are made in conical blanks by cutting or forming methods. Among the forming methods, forging, casting, or sintering are manufacturing processes applied to straight bevel gears. The concept of pitch cones in bevel gears is analogous to the concept of pitch cylinders in spur and helical gears. Manufacturing of bevel gears with forming methods opens new possibilities for application of the spherical involute profile, which can be considered the counterpart profile of the involute profile for bevel gears.