The ratio of the pitch diameter to the number of teeth.
The Role of Excel-Based Calculators in DIN 5480 Spline Design din 5480 spline calculator excel
To build your calculator, input the primary variables (Module , and Pressure Angle ) into designated cells and use these formulas: Excel Formula Logic Base Circle Diameter Pitch Shaft Tip Diameter da1d sub a 1 end-sub Shaft Root Diameter df1d sub f 1 end-sub Total Tooth Depth Note: The addendum modification factor ( The ratio of the pitch diameter to the number of teeth
For actual tooth thickness with fit class, you need tables from DIN 5480-1. A simplified version: Add shift coefficient ( x ) (≈0 for standard fit). Then ( s = m \cdot \left( \frac\pi2 + 2x \cdot \tan\alpha \right) ). input the primary variables (Module