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Contributor
sportsman1953
Posts: 23
Registered: ‎11-27-2006
Message 1 of 11 (344 Views)

Draincare Spring

344 Views, 10 Replies
05-29-2013 01:13 PM

Inventor  offers us several options to design a coil of constant pitch with a tapering diameter.  However, I am unable to create a coil with a taper and a changing pitch at the same time.

We are using Inventor 2013. I would like to produce similar parts as the attached 2D drawings in 3D, only witha changing pitch (distance between revolutions) per revolution.  Can it be done?  There is software for the CNC spring manufacturing machines to produce such parts. Therefore the proper inputs to produce these effectively and efficiently, are available somewhere.

The part I've been describing uses .09 diameter wire and has about 54 coils in about 8 inches. The starting inside diameter is about .53" and the pitch is about .27" the ending inside diameter is .109" +/- .01 with a pitch of about .091".

Here are 2D drawings of similar parts, the last (NF3) is closest to what we need.

NF5.jpg

NF4l.jpg

NF3.jpg

Distinguished Contributor
Mark.Downes
Posts: 120
Registered: ‎11-18-2010
Message 2 of 11 (318 Views)

Re: Draincare Spring

05-30-2013 07:21 AM in reply to: sportsman1953

Hi Sportsman 1953,

 

This can be done but it would need a VERY POWERFUL pc. I had to reduce the coil count dramatically

and its still over 10 meg so a 50 plus coil would be prohibitive.

 

If you need to show a "spring" in your assembly may be if you look at a dohnut shap revolve and a patten. (Or ask NASA for the loan of their mainframe - ha)

 

Hope this helps

Mark

Inventor 2013

 

Tapered Cutter Spring Pic 02.JPGTapered Cutter Spring Pic 01.JPG

Employee
rogermollon
Posts: 84
Registered: ‎07-31-2008
Message 3 of 11 (217 Views)

Re: Draincare Spring

11-20-2013 07:03 AM in reply to: Mark.Downes

Hi Mark,

 

Would it be possible for you to share your ipt file, roll the EOP to the top and save it first. :smileywink:  We'd like to benchmark it against our Beta build.  BTW, are you in the beta program?

 

Thanks,



Roger Mollon
Sr. Director, Software Development
Design, Lifecycle, & Simulation Product Group
Autodesk, Inc.
*Expert Elite*
JDMather
Posts: 26,879
Registered: ‎04-20-2006
Message 4 of 11 (210 Views)

Re: Draincare Spring

11-20-2013 07:08 AM in reply to: rogermollon

For those who are not aware:

http://beta.autodesk.com

Please mark this response as "Accept as Solution" if it answers your question.
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Distinguished Contributor
Mark.Downes
Posts: 120
Registered: ‎11-18-2010
Message 5 of 11 (199 Views)

Re: Draincare Spring

11-20-2013 07:27 AM in reply to: rogermollon
Hi Roger, heres the rolled up part model cheers Mark Inventor 2013
Distinguished Contributor
Mark.Downes
Posts: 120
Registered: ‎11-18-2010
Message 6 of 11 (193 Views)

Re: Draincare Spring

11-20-2013 07:38 AM in reply to: Mark.Downes

I am haveing issues uploading files again!

 

The file is rolled up and the size is 1.01MB

If it's not attached to this (I will try Firefox instead of IE) you can contact me direct from

my account e-mail and i will send it to you that way

 

thanks

 

Mark

Employee
rogermollon
Posts: 84
Registered: ‎07-31-2008
Message 7 of 11 (175 Views)

Re: Draincare Spring

11-20-2013 09:14 AM in reply to: Mark.Downes

Mark,

 

We've got the file, I'll get back here with what we find out.

 

Thanks,

 



Roger Mollon
Sr. Director, Software Development
Design, Lifecycle, & Simulation Product Group
Autodesk, Inc.
Contributor
sportsman1953
Posts: 23
Registered: ‎11-27-2006
Message 8 of 11 (130 Views)

Re: Draincare Spring

11-21-2013 05:51 AM in reply to: sportsman1953

One of our members was able to write a program with a button appearing on the toolbar on startup.  This program worked fine with the same format as in the Autodesk existing spring button.  Any number of coils any pitch change and any diameter changes, pumped it right out..., part file was accepted in Inventor drawing, assembly and presentation files..., However, we've upgraded to 2014 and as yet I haven't been able to get it into Inventor Pro 2014.  Hope Autodesk provides something within the software soon.  Maybe, rather than fining or penalizing anyone, Autodesk would consider offering a reward to persons for their expertise. 

 

We've all got a job to do..., problem is..., I can't do mine proficiently without better software.  How about, less focus on the suite and more for the mechanical side of Inventor, so we can be more efficient, within just Inventor.  These items are currently in production, The software within the CNC spring making machines are able to manufacture these items, right at the machine.  Why isn't Autodesk able to, in design software.  The ability to create any number of waves on a circular face of a hub is another area that could use some focus.

 

Thanks

 

 

Valued Mentor
mpatchus
Posts: 473
Registered: ‎10-22-2008
Message 9 of 11 (119 Views)

Re: Draincare Spring

11-21-2013 06:30 AM in reply to: Mark.Downes

Not sure why everyone's file size is so large.

I just created it (may not be exact, but it only took a couple minutes) in 2012 and the file is only 544K.

 

Mike Patchus

Inventor 2012 SP3 ~ Vault Pro 2013
==================
Lenovo D20 Workstation Intel Xenon E5640@2.67GHz (2)
Win 7, 24gb RAM, NVIDIA Quadro FX 3800

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Contributor
sportsman1953
Posts: 23
Registered: ‎11-27-2006
Message 10 of 11 (99 Views)

Re: Draincare Spring

11-21-2013 08:23 AM in reply to: mpatchus

Here again if you didn't change the pitch (greater to smaller) as the diameter changes (greater to smaller), you haven't done the project correctly.  We can easily maintain the pitch on a taper.  Also, we can easily change the pitch in a constant diameter. The project is to do both within 50 revolutions.

 

Thanks 

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