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Creating a fillet using Hold Curve and Spine

rbarata

New member
Hello, my friends

I can't understand the porpose of the spine in this feature. I know that the hold curve is the element that limits and "imposes" its shape to the fillet. Now, the spine... I've done several experiences with different spines and, as an example, why can't the spine in the picture (skectch 5 selected) be used?

Thank you
 

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MrCATIA

Super Moderator
What are the inputs used to create this Fillet?

Please edit the fillet, and send us a screen shot showing which options and inputs are used.
 

rbarata

New member
Now I've done the part with a single l-shaped sketch while previously I've used two pads. Now it's working fine so I think the problem was in the way how the part was constructed (although I can not understand why the errors).

Also, now that everything is ok, even if I change the angle between the spine and the fillet axis, I cannot see any changes in the fillet. So I still can't understand the purpose of the spine.
 

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MrCATIA

Super Moderator
Maybe the two pads did not touch in the previous model?

When computing a fillet, CATIA calculates a infinite number of sections, with each section containing a circular arc. The fillet is then swept through all the arcs. The spine curve defines all the sections.

Normally for a part such as the L-shape, the spine would be a straight line in the X-direction. By using a different line or curve, a different set of sections are used and a slightly different fillet is created.

Look closely at the ends of the fillet in the preview panel: it shows one of the edges extending past the part. This indicates the first and last section are not parallel to the ends of the L-shape solid.
 
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