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Valued Mentor
Valued Mentor
wh
Posts: 396
Registered: ‎12-27-2003
Message 1 of 5 (218 Views)

Negative contour create problems

218 Views, 4 Replies
10-22-2012 02:59 PM

 

I've been struggling with that for several hours, but no result until now. See picture.

 

I need a pickup-die for the backside of this part, but it's not easy. My attempt:

- Create silhouette curve for the outside (direction along the black line)

- Project this curve an upper plane

- Create a loft between these two curves

- Sculpt the whole thing into a substract body for the main die part

 

Problems:

- Silhouette curve has lots of segments, and can't be combined into a single curve

- Even if all these segments are projected onto another workplane, no loft is possible

- Multibody combining fails, too

- Rhino can do somewhat better, but not all problems are solvede

 

:smileywink: Here I'm stuck. And it's one of the rare cases, where people are wanting to pay for an acceptable result.

 

Perhaps someone from Autodesk can contact me in this matter.

wh@holzwarth-cad.de

 

Thanks

Walter

Distinguished Mentor
rdyson
Posts: 878
Registered: ‎04-11-2005
Message 2 of 5 (166 Views)

Re: Negative contour create problems

10-24-2012 06:17 AM in reply to: wh

Walter,

I'm probably missing something basic ; but can you not just duplicate the surface and patch all holes?

Valued Mentor
Valued Mentor
wh
Posts: 396
Registered: ‎12-27-2003
Message 3 of 5 (161 Views)

Re: Negative contour create problems

10-24-2012 06:56 AM in reply to: rdyson

It's a bit more complicated, Ray. The part has a flexible insert, that's not shown here. And there's a groove at the non-visible face, where the insert is located, too. Therefore I had to combine both parts with lots of handwork, because the body combine feature was failing. I've copied the contact faces with help of Construction environment, and created a substitute face through this.

 

Problem is solved meanwhile, but it took some hours for me

 

Thanks for asking, Ray

Walter

Distinguished Mentor
rdyson
Posts: 878
Registered: ‎04-11-2005
Message 4 of 5 (154 Views)

Re: Negative contour create problems

10-24-2012 07:27 AM in reply to: wh

I think I'd need more information to fully understand but it seems you have it under control, so I'll go away and leave you to it.

Valued Mentor
Valued Mentor
wh
Posts: 396
Registered: ‎12-27-2003
Message 5 of 5 (144 Views)

Re: Negative contour create problems

10-24-2012 08:11 AM in reply to: rdyson

I can't tell too much, because of confidentialiy reasons. I think, you'll understand.

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