undulating spring

[Hole]

Good morning to all,
I would have the need to make a wavy spring but I don't know how to proceed.
I attach an image, the spring is the last one at the bottom.
currently an office we use inventor 2010.

 

[Ezio Olivato]

you would have two possibilities or revenues by extrusion of a section along a profile, or by subtraction from a cylinder, of many smaller cylinders as are the "waves" you have to generate.

 

[Hole]

I should make it as a multibody inside a solid

 

[Ezio Olivato]

is the construction of the undulating circular profile?

 

[stefanobruno]

should it be precise or just to give the idea of the object?

 

[Hole]

the maggorous difficulty that I encounter is the construction of the waved circular profile, in fact I thought to make it as sweep; it must only give the idea of the object, I do not need it to be precise.

 

[Hole]

I finally solved, thank you anyway.

 

[pagnotz]

I finally solved, thank you anyway.

How? It is good to explain briefly how the problem has been solved, it can be useful to others...

 

[Hole]

I created a cylindrical surface with a diameter equal to that of the spring that was inserted in my solid.
I therefore created a sketch on the passing plane for the half-work of the cylindrical surface, with such sketch I made the "waves" of the spring.
through a 3d sketch and with the 3d intersection curve function I projected the waves along the cylindrical lupers.
I then created the section of the spring and with a sweep I gave it as the path the profile created as indicated above.

the result:

 

[davide75]

would be interesting if you post the file so we can take it and see the procedure well

 

[Preparation-H]

I put a link that could always come in handy. . .
http://www.smalley.com/wave_springs/search_for_a_spring.aspciao!
p-h

 

[Ezio Olivato]

excuse prep-h, but what would be the usefulness of the link you reported? I do not see a design technique for the construction of that spring?! Maybe I didn't visit your link properly?

 

[stefanobruno]

excuse prep-h, but what would be the usefulness of the link you reported? I do not see a design technique for the construction of that spring?! Maybe I didn't visit your link properly?

from the linked site I downloaded a spring native inventor and, looking how they solve the problem, you can learn something.
There is, however, nothing particularly strange in their procedure, indeed.
I do not know whether what is generated is the reality of the object, I expected a distributed wave radially and this is not.

Bye.

 

[Preparation-H]

excuse prep-h, but what would be the usefulness of the link you reported? I do not see a design technique for the construction of that spring?! Maybe I didn't visit your link properly?

Hi.

bhe the usefulness of the link is that you can go to download your already beautiful spring that ready, and as it says stefanobruno in the native of your cad (peccato that there is not to alibre... :bekle:, so I have to download it in neutral format) you can go see how it was built.

we say that every cad exploits its potential to realize the various parts, in pro|e I can realize that spring:

- wrapping a sketch on a cylindrical surface and using the result as a traittoria for a vvs
- use a graph that will be the performance of the undulatura
- use a trajpar function

in alibre instead I do not have the possibility to project a sketch on a surface so I have to by force use a 3d sketch...

Hi.
p-h

 

[stefanobruno]

It's a pity that there's no alibre... :bekle:, so I have to download it in neutral format)
p-h

Don't worry, you don't miss anything like knowledge.
after extruding a washer, extruding by subtracting the upper and lower wave parallel to the diameter (the piece resembles a patatina pai rustica laundry in the center:biggrin: )

Bye.

 

[Fulvio Romano]

extrude by subtracting the upper and lower wave parallel to the diameter

3 times to 120°? Right?

 

[stefanobruno]

3 times to 120°? Right?

No, just once.
change example : washbasin from "onduline", that under-coup to waterproof the roofs.

Bye.

 

[Ezio Olivato]

It is not clear!!! Noooo, not clear, but it is not clear: When you say so, my brain is crumbling, and my brain is not good when it comes in! ! !
the onduline from which to get the washer, at most it gives me an orthogonal wave to the axes of the spring circle, or if I want the roote but it changes little.
the difficulty is to project the wave on a cylindrical surface, but radially and not perpendicularly.

 

[stefanobruno]

the onduline from which to get the washer, at most it gives me an orthogonal wave to the axes of the spring circle, or if I want the roote but it changes little.

I just wanted to clarify to those who do not have the opportunity to see the native (preparing-h), that from the proposed link there is nothing to learn for what was the initial hole request, which however brilliantly solved its problem.
I attach the pdf of the patatina/onduline for documentation.

Bye.

 

[Preparation-H]

I just wanted to clarify to those who do not have the opportunity to see the native (preparing-h), that from the proposed link there is nothing to learn for what was the initial hole request, which however brilliantly solved its problem.
I attach the pdf of the patatina/onduline for documentation.

Bye.

thank you, in fact it is more or less the result that I got anyway I modeling the spring from 0. (see image posted earlier)

this is the neutral spring file modeled in alibre.

the result at least from a graphic point of view should be ok, at least you can give us an eye.

Bye!
p-h