Problem in Creating a split point on Catia v5

[Loic42]

Hello everyone,

I'm currently designing a drill bit on Catia v5, but I don't manage to complete the last step I want to do, which is creating the split point (135°, 4 facets). For the angle it is okay, but I don't manage to create the 4 facets. I'd like to do something like that:

And for now I've only got that:

But I don't find a way to create the split point. I tried some things such as creating a new sketch in a perpendicular plan (to the tip surface), but nothing worked. I tried to generate a revolution but wasn't working, either it pass through the drill bit, or it goes over the edges randomly.

Does someone have an idea? A tip?
Thanks for your help, I hope someone will be able to help me.

Loïc

 

[JeniaL]

As i can see from Catia screen it's not looking like something angular. Start from analysis of a drill.

 

[Loic42]

Thanks for your answer.

By angular what do you mean? Which angle are you talking about?

Thanks very much

 

[Loic42]

If you mean this one... (cf attachement)

 

[Loic42]

Finally, with tenacity I've been successful. Admins, you can close the thread.

Thks

 

[itsmyjob]

Ok I did not check any value for real drill bit, and I simplified the main section but you can apply this to your construction:

Create a line from drill bit tip to a location on the edge (I use extremum point):

Create a Sweep Surface using the line as Guide Curve and the conical surface as Reference:

extrapole in 3 direction (not the edge from the line):

Symmetry twice (or rotate 180deg) and join (uncheck Check Connexity):

Trim with the drill bit surface:

You better check real drill bit geometry but I am confident something like that could help you.

Eric N.
indocti discant et ament meminisse periti ​

 

[Loic42]

Thanks you for your method, it is different from mine but seems to give a good result as well