Problems with Corners

[oldroydsam]

I am currently creating a fully parametric Bevel Gear on Catia but, naturally, I'm having a few problems when it comes to fine tuning the part. When I have the gear tooth number under 40 the corners that I have created are fine but when it goes over this number the corners flip and therefore it doesn't work. I am just wondering whether anyone knows how best to constrain the corners so they don't do this. Whatever I have tried so far, the corners just become over constrained.

I will add some screen shots so you can see what I mean

Any help would be much appreciated.

Thanks

 

[MrCATIA]

One solution is to not include the corners in the tooth profile sketch, but add them as Edge Fillets after the Pad feature.

I like using a tree structure that I've attached below, with corners added where the teeth intersect the hub. It's very robust and works well with parameteric models.

 

[oldroydsam]

Thanks. I managed to get it sorted in the end!