Slant (canted) coil spring 12

[Trietsch]

Hello All,

Hoping someone has a seed part or maybe some steps to follow to create a slant coil spring.

same as this website, but obviously not in solidworks.

https://forum.solidworks.com/thread/45751

using NX6.0.5.3 globally, soon to be NX8.5.3

Thanks,
Ryan

 

[JohnRBaker]

Using NX 6.0, the attached is about as good as I can get it. Not that it's not really all that parametric, but it at least looks right. Here's a picture of what I got:

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Trietsch]

John,

Excellent, this is exactly what I asked for... however I apparently had bad examples.

Is it possible to adjust the slant in another direction? I'll attach some pictures of a sample spring I have, I hope it helps.

http://files.engineering.com/getfile.aspx?folder=329f1065-5d4f-4e44-a750-196123a77d48&file=spring.7z

Also,

I see your helix was made with a law for the radius method. is it possible to edit the values in this law? I don't see them in expressions...

Forever grateful,
Ryan

 

[JohnRBaker]

Yes, the law values can be Expressions. That being said, if you wanted a true, fully parametric model, particularly using something as old as NX 6.0, it would not be a trivial exercise.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Trietsch]

John,

Thank you. Any easier in NX8.5? I'd even be happy with something in NX10 that I can modify.

even if parametric isn't going to happen, could you guide me with the values in your current law? Also, is it possible to make a model slanted like the pictures?

Thanks,
Ryan

 

[JohnRBaker]

The approach I took was purely for the visual effect. I only modeled what would look close to what you were looking for, just as a sort of, "Yes, NX can make models that look like this."

As for whether it might be a bit easier in NX 8.5 or newer version, yes that might be true. Could you provide some specifications as the size, angle, number of loops, etc that you're looking for?

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[TaylorAnderson]

Are you trying to nest it around in a groove like in the original SolidWorks post (with the coils vertical, and the "slant" leading/lagging as it goes around the groove, so the coil compresses axially):

Or are you trying to have the slant leading/lagging such that the coils compress vertically, like in the later photos you sent?:

Just trying to figure out the orientation you're after.

Taylor Anderson
NX Product Manager, Knowledge Reuse and NX Design
Product Engineering Software
Siemens Product Lifecycle Management Software Inc.
(Phoenix, Arizona)

 

[Trietsch]

Thanks Gents!

John,

I'll try to get some specifics from the location that makes these springs.

Taylor,

Yes, is the answer to both questions... However I'll run with what I can get. Eventually it will fit inside a groove of a seal like in your first picture... however free state of spring would be more useful than installed state. The second yes is for an alternate configuration of a seal. Your picture is a rod seal, piston seal would be the same spring as it is still compressed radially. We can also make it into a face seal configuration where it would be compressed axially. I was able to find a physical spring at my location for the pictures, it is ideally what I would like to accomplish and turn it over to the design responsible to replicate.

Long term our FEA team wants to attempt to find a way to compress it and get some useful forces for their models.

Thank you both for all of the help!
Ryan

 

[Toost]

John, The Instance Geometry does exist in NX6. - Isn't that whats missing in this case ?
Or is it the NX6 Law curve which is the problem ?

Regards,
Tomas

 

[JohnRBaker]

I used the Move Object with the Copy Original option that allowed me to make multiple copies of the single look Helical curve. Of course, that means that there's no feature being created, as I alluded to when I said that it was "not really all that parametric". Perhaps with the current version of NX things could be more associative and feature-line.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Trietsch]

Gents,

Some generic spring numbers below. Units are in inches, length of spring in my pic is ~7.5" so diameter roughly 2 3/8".

Thanks,
Ryan

 

[Ehaviv]

Hi

atached a prt file with the following parameters
to control the helix size and shape

A_major_axis=27.5
A_minor_axis=25
A_ring_dia=100
A_slant=15
A_turns_number=22

 

[Toost]

a984928 : Wow! That's a nice one !

Regards,
Tomas

 

[cowski]

Well done!

www.nxjournaling.com

 

[Trietsch]

Nice model A984928! This will come in very handy for me, THANKS!

 

[TaylorAnderson]

a984928: VERY nicely done. Including the elliptic parameters was a great move.

Wish I knew your name, so I'd know who to credit with this little piece of brilliance. :-D

Taylor Anderson
NX Product Manager, Knowledge Reuse and NX Design
Product Engineering Software
Siemens Product Lifecycle Management Software Inc.
(Phoenix, Arizona)

 

[Ehaviv]

Hi TaylorAnderson

I am surprised and I thank you for the good things you wrote me.
About my name I am debating and hesitant.

You made me happy
I thank you very much