![Helical Gear Formulas Helical Gear Formulas](http://www.sdp-si.com/resources/elements-of-metric-gear-technology/images/Table6-3.jpg)
![Module Module](http://khkgears.net/wp-content/uploads/Table-4.10-The-calculations-for-a-profile-shifted-helical-gear-in-the-normal-system-2-1.jpg)
The helical gear formulas are given below for Diametral pitch (DP). To model the gear follow the same procedure explained for Module gear type. Transverse diametral pitch = No.
2011-4-28 The next type of gear, and the most advanced gear discussed in this report, is the spiral bevel gear. This gear has the angled face of a bevel gear and also has angled teeth similar to those of a helical gear. The angle of the teeth varies along the face of the gear, which creates a curved tooth shape.