Din 5480 Spline Calculator Excel Verified -

Mastering DIN 5480: Creating a Verified Spline Calculator in Excel

2. Base diameter (for involute):

• Formulas: Uses named ranges (e.g., Module, Teeth) rather than cell references (e.g., B2) to prevent breaking logic if rows are inserted.
• VBA Script: A lightweight script to export the result sheet as a secured PDF for external verification.
• Dropdowns: Data Validation lists restrict tolerance fields to valid DIN 5480 classes (e.g., 6H, 7H, etc.) to prevent user typos.

The user should only input the following variables (highlighted in yellow for usability):