spline to arcs and lines

Hey There -

Heres a dumb question. Does anyone have a good method for fitting arcs and
lines to a spline? Im aware that this is probably a manual operation, but Id
like to know if anyone has any tips. What I really need is an anti-fitspline


Our electrical guy is using a circuit board design program that doesnt allow
splines to be imported.

Thanks,
Craig

 

Craig,

Some CAM programs have this ability, I think Rhino does to. Not SW though.

If you don't mind my asking, how did you end up "needing" to import an
object containing splines, into a PCB program ?

We usually give the electronics guys a simple 2D boundary with hole
locations.

Regards

Mark

 

Its the board outline. Simple 2D is not currently a luxury.

 

solution for 2d data, save as r12 dxf/dwg

 

Craig,

I guess what I'm wondering is why the outline is composed of splines. Is it
an "offset" of a curvy shape ??

When we have to form fit a PCB into a highly styled enclosure we usually
approximate the outline using regular geometry. Our PCB software won't
accept splines either. Just as important, the CNC routing/profileing
software used by our PCB house can't deal with them.

Regards


Mark

 

Yes it is an offset from a curvy shape. The designer is out of town so I am
covering his parts...isnt it always the case that thats when stuff always
hits the fan
Thanks,
Craig

 

So I save it as an DWG V12 and open it up in the new DWGEditor. When I try
to dimension it the program does not see an arc or circular geometry and
keeps telling me "An arc or circle is needed here. Please pick again". What
am I missing? Did I understand your reply correctly...If I save it as dwg
v12 it will turn the outline into lines and acs, correct?
thanks
Craig

 

Nevermind...Its Monday.
tks.

 

yep. i don't use the dwg editor so i can't comment on how well it works.

arcs will not be created, you will have many small line segments simulating
a curve.
i've shared what i know will work for some cam systems. good luck.

 

Hello Craig,
I don't too much about PCB's, But MM is right, that Rhino can convert
splines to arcs.

If you need me to that for you, I'd be happy to.

When sending the file, change "home" to "comcast".

Muggs

 

Craig, rhino has the command in the edit menu to fit arcs to a spline.
also mastercam has a similiar command.

Zander