Worm Gear: ZI, ZN, ZA
Current versions: ZI_03.30.2022, ZN_4_03_2022, ZA_4_03_2022
ZI-involute tooth profile, ZN - straight normal section (Similar to ZK), ZA - straight axial section
Cutting worm gears on a CNC has many advantages. Better tooth contact pattern. Worm can be cut with enveloping root for improved bending strength. More strength on bending allows smaller worm diameter for higher driving efficiency.
Worm gear with enveloping worm root.
Input Excel interface
Sample of 3d model
After 5-axis CNC machining
Meshing verification
Reverse enginered 3d model
Worm gear program description
3 programs are offered: ZI, ZA, ZN. Involute ZI tooth form is the most popular. Worm grinding normally generates ZI tooth form. Works in Microsoft Excel. No experience needed. Because the interface is in Excel it is easy to customize for different projects and languages. Add formulas, diagrams, tables and other Excel options. No installation needed. Allow Macros when open the program for the first time. Compatible with any CAD/CAM software. Unlimited license. One year free support. Download PDF tutorial.
The newer program generate worm gear tooth and the worm thread. ZI, ZN, ZA worms are also easy to generate in common CAD. Download PDF tutorial for ZI (involute) worm. You can also use this Helical gear program to generate involute worm.