Скачать или смотреть Chordal fillet in CATIA part design. Dress-up features. Generative shape design. Part design.

In CATIA Part Design, a chordal fillet is a type of fillet (rounded edge) that differs from the standard fillet by how it controls the size and shape of the transition between surfaces.

✅ What is a Chordal Fillet?
A chordal fillet creates a rounded edge between faces, but instead of specifying the fillet radius, you specify the chord length — the straight-line distance across the fillet.

Chord length: The straight line between the start and end of the fillet (as opposed to the arc radius).

This is especially useful when design constraints are defined by the chord, not the radius.

🔧 Where to Find It in CATIA:
Open a part in Part Design workbench.

Click on the Edge Fillet tool (usually a standard fillet icon).

In the Fillet Definition window:

Switch the Fillet Type from "Edge Fillet" to "Chordal Fillet".

You'll see an option to define the chord length instead of the radius.

📐 Benefits of Chordal Fillet:
Maintains a consistent chord length regardless of curvature or surrounding geometry.

Offers better control for design intent in some engineering applications (e.g., maintaining a certain edge-to-edge dimension).

More suitable for parts that require uniform thickness transitions or where the fillet must not exceed a specified envelope.

⚠️ Notes:
Not all edge types or situations are valid for chordal fillets — CATIA may show a warning if the selected geometry doesn’t support it.

Can be combined with other fillet types in more complex models.

🆚 Difference from Regular (Constant Radius) Fillet:
Feature Constant Radius Fillet Chordal Fillet
Defined by Radius Chord length (straight line)
Geometry control Based on curvature Based on overall width
Use case General smoothing Tight space or dimensional constraint