We're trying to create a spring around and elliptical profile with cross section shown below.
The profile in 150 mm long and the spring picth is 15 mm. But we cannot solve the path for this type of section.
Thank you all by any help...
Here is another method. See if this works for you.
Check out Kelvin's attachment of shaped springs from this discussion:
How to make Helix/Spiral wire on squared bar, step by step in details?
Thank you Jamil by your reply. Our issue is just at the last step, to solve (or find) the problem of the curve that is a spline. Always we're try to create the sweep occurs an error. If we use a circle the tool works but with some irregularities over the path. and we cannot also use the torsion over path because the path isn't smooth. Have you any idea? Thanks again. Actually it is not a circular spring profile, but a rectalngular profile that is sweeped over an elliptical surface.
hei'ya Altibano Ortenzi,
sorry I have to ask, the above png,
if this is the profile of the spring?
you haven't described the elipse, major and minor axis,
and the minimum pitch would be 20?
or do you mean that there is 15mm between coils
if this is the "eliptical" path of the spring
is it the "mean" parameters/centre-line, or major/outer or minor/internal dimmensions,
and what size/diameter/profile is the wire/spring
what are the end conditions-
Plain Ends, Closed Ends,Plain Ends Ground or Closed Ends Ground?
it may be helpful to upload the problem part or a sample file,
you can use the advanced editor-top right of the reply pane,
to post/upload files-attach files bottom left and browse to the file
have a good'n-regards- kelef
just a thought, do you mean a "magazine" spring
if this is what you are looking for check att.prt file,
hope this helps- have a good'n kelef
Hi, Kelef, actually the profile is 150 mm long but another rectangular profile must involded this first.
My problem is:
As the profile is rectangular it should to mantain the perpendicularity regarding the path. The first thing to assure this was to create a perpendicular plane with the start point of the spline. After, the profiel was designed with one edge coincident with th start point.
While the picth is 10.74 mm the profile height is10.0 mm ist thickness is 2.2 mm. So the profile canno turn over their baricenter. And I cannot change anything on this spline. I've tried also with the option leave normal constant, but without good results. The software is demanding more clearence that i can have on the part. The maximum clearence I have is 0.74 mm. Doesn't matter if I put 2, 5, 6 or the total 15 turns on the options. Thanks anyway. I'm thinking to change software 'cause is the third time I have issues to solve more complex geometries. Always I use these geometries.
See if this is what you want. If you can't open the SW file I can try to give you detailed instructions. I ran into an issue of the rectangular spring profile twisting as it followed the path, so I manually entered a twist to offset it.
My case is very complicated because I do not have space. the clearence between turns cannot be greater than 0.5 mmm and I'm trying with 0.62 just now... :-/
I think it will works fine. I'll try and asap I'll let you know. Tks Jamil.
ok, AO, is this any better,
sorry but I'm not understanding your specs,
parameters for what you need-
but I hope this is where you are trying to get- kelef
edit!!!! dumdum ULd wrong file- is now the sldprt
oops, sorr JS didn't see your reply kelef
Here is another method that results in a more consistent slope along the sides. But the shape comes from fit splines of the actual geometry you want, so it is not exact.
Could you pls save the file to use with the version2012? I couldn't open the file. Tks.
FWIW here's my file as SW12
hope it helps- have good'n kelef
That's a little different than how I did mine, but the end result looks the same. I made two surface sweeps like you but then I did a solid extrude of the profile shell and used the surfaces to cut the solid.
hei'ya JS, sorry for the cross-over,
my refresh isn't "fresh" and slooow to "re",
but as they say- what works is right-right
have a good'n- kelef
Thats ok. I'm glad you posted it becasue I can't save a file to be opened in 2012 so hopefully yours is good enough for Altibano
hei'ya JS, I'll repost yours as SW12 if that's ok,
might not be for an hour or so- kelef
Thank you guys,I'll try to solve like the file from Kelef and asap I'll post the resulted file. See U..
I'll repost JS's post as SW12 when he says ok,
it might be an hour or two, got me chores to do dude,
glad to have hopefuly helped- kelef
Sure you can repost mine as 2012. Also if you want to try to redo the JS3 one in 2012 if you can figure it out.
JS, thnx 4ok dude,
I'll try to do js2 and js3 in a short while,
have a good'n kelef
edit: added SW12 prt files
Oval Spring JS2-reup-klf.SLDPRT
Oval Spring JS3-reup-klf.SLDPRT
thnx JS, just check I got there faithfully dude kelef
Ok Jamil and Kelef, I've tried also on a PC with SW 2013 from a colleague but always is the same issue. The software doen't 'view' my geometry like a set of homogeneous curves. But if you check the profile it's ok! So this is the last step I reached. After that, the SW freezes.
Now I've atteched the real profile and data. This is part of a PhD thesis which I'm adivisor, but if we cannot solve the geometry, I'll tell to student try with other software like Inventor or Solid Edge... I don't know... Thank you so much guys. This file is saved from the 2013 version.
Message was edited by: Altibano Ortenzi
hei'ya AO, I'll look at that right away dude- kelef
yeah is just the profile I designed one time and it runned well. But with this new geometry I don't know what is happining.... I cant find any error on geometry, and process. First the top finish had some problems due to conflicts but I solved them. Now I really don't know what's wrong.
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