Tutorial download here...

    High Ratio Hypoid software is similar to Hypoid software but adjusted for higher hypoid offset and reduced number of teeth on the pinion.

Works in MS Excel. Input gear data into Excel and run VBA macro to generate 3d igs surfaces of the gear and pinion teeth. Works for all existing CAD programs. Download output examples:

- Gear tooth flank with lead and profile modification for better contact pattern: g1, g2 

- Working flanks of the pinion modified for correct tooth contact pattern and correctly generated root undercuts: 1, 2, 3, 4.

The Excel generated surfaces are used to make accurate 3d CAD model of High Ratio Hypoid gear in SolidWorks or in any other CAD tool:

Download STEP sample here...

Tooth contact pattern can be checked on our TCA software or in CAD by using interference option a shown below:

More interference shows larger size of the immediate tooth contact.

When interference increases the tooth contact spreads on more teeth. This software allows the gear set to be specifically designed with localized tooth contact. 

High Ratio Hypoid (HRH) gears look very similar to worm face gears. The advantage of HRH gear is simplicity of the face gear cutting. The gear shown on this web site is cut by indexing of a cutter head (fly cutter) from tooth to tooth without generating motion. This method also called FORMATE by Gleason. The advantage of FORMATE method is that it does not need a Gleason gear generating machine. The manufacturing disadvantage of HRH compared to worm face gear is variable pitch on the pinion, which requires more CNC programming.     

More CAD gear models here...

Input all the data you know and the program suggests the remaining input data for better design.

This program uses the gear tooth model in order to generate the pinion tooth by simulation of machining of the pinion by the gear tooth acting as a cutter head. This method results in 100% conjugated teeth.