Discover how to accurately calculate the flat diameter of an auger screw blank with our free online tool. Perfect for engineers, fabricators, and DIY enthusiasts involved in auger design for agriculture, construction, and material handling applications. Get precise measurements for efficient manufacturing of auger flights.
Formula:
The calculator determines the flat outer and inner diameters of the sheet metal blank needed to form an auger helix, based on the final auger's dimensions. All input units must be consistent.
Formulas:
- Outer Helix Circumference (Couter) = √((π × Douter)2 + P2)
- Inner Helix Circumference (Cinner) = √((π × Dinner)2 + P2)
- Flat Outer Diameter (FDouter) = Couter / π
- Flat Inner Diameter (FDinner) = Cinner / π
Where:
- Douter = Outer Diameter of the formed auger
- Dinner = Inner Diameter of the formed auger (or shaft diameter)
- P = Pitch of the auger (axial distance per full turn)
- π ≈ 3.14159