Inventor General

Reply
*Expert Elite*
karthur1
Posts: 4,049
Registered: ‎04-27-2005
Message 1 of 16 (448 Views)

Calibration of CAD software

448 Views, 15 Replies
10-22-2012 12:57 PM

During a recent audit, an inspector asked me how can do I "Calibrate" our CAD software.  I told him that we didn't need to since it was commercial software.  That it had already been verified by the manufacturer (Autodesk, Inc.).  That seemed to please him and he moved on.  When we got the final report, there was a recommendation that we develop a method to "Calibrate" our CAD software.

 

Rather than "calibrate", I think that we just need to verify that it is accurate.  If we found some inaccuracies, then we could deal with that later.

 

One easy way that I could think was to draw a cube X x Y x Z and then verify that the volume is accurate.  Of course it could be a 1in cube, 1ft cube or 100ft cube..... either way it should give the correct volume. I just don't know of any other way to prove to this dip-wit what I draw is an accurate length.

 

Has anyone else been asked to do this for Inventor?

*Expert Elite*
mrattray
Posts: 2,241
Registered: ‎09-13-2011
Message 2 of 16 (444 Views)

Re: Calibration of CAD software

10-22-2012 01:16 PM in reply to: karthur1

How exactly would you calibrate a CAD package? That's completely rediculous. Did he ask you to calibrate your calculator? That's all Inventor is, a really high end graphing calculator.

 

Create a dimension that is equal to 2 inches + 2 inches and show him that the line comes out to be 4 inches long.

Mike (not Matt) Rattray

*Expert Elite*
mcgyvr
Posts: 6,410
Registered: ‎12-01-2004
Message 3 of 16 (435 Views)

Re: Calibration of CAD software

10-22-2012 01:33 PM in reply to: karthur1

how silly IMO..

You aren't really measuring anything with Inventor. The measurements are done with phyical measurement devices based on dimensions provided by your software only.  Frankly I would just stick a "calibration not required" sticker on the Inventor box and stuff it back in the closet.

 

 

Guess others have come across this.

http://asqasktheexperts.wordpress.com/2012/06/04/calibration-of-autocad-software/

 

Did you find this reply helpful ? If so please use the Accept as Solution or Kudos button below.

Down with IDW/DWG files..... Long live 3D PMI... Hurry it up already..
-------------------------------------------------------------------------------------
2015 Product Design Suite Ultimate
Windows 7 64 bit
Core i7 4820k processor (OC'd to 4.4Ghz), Nvidia GTX 770, 16G RAM


Valued Contributor
Posts: 93
Registered: ‎06-09-2008
Message 4 of 16 (426 Views)

Re: Calibration of CAD software

10-22-2012 01:56 PM in reply to: karthur1

Maybe he was confusing "CAD" with "CAM."

-Using Autodesk Inventor Professional 2012
*Expert Elite*
Posts: 25,352
Registered: ‎04-20-2006
Message 5 of 16 (410 Views)

Re: Calibration of CAD software

10-22-2012 04:27 PM in reply to: karthur1

karthur1 wrote:

During a recent audit, an inspector asked me how can do I "Calibrate" our CAD software. 


 

 

I hold up my calipers to the screen.   :smileyvery-happy:

 

 

Can you identify this person and organization?

 

 

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2014 Edu 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Valued Contributor
Posts: 63
Registered: ‎09-29-2008
Message 6 of 16 (393 Views)

Re: Calibration of CAD software

10-22-2012 10:30 PM in reply to: karthur1

take a look at this web page

http://asqasktheexperts.wordpress.com/2012/06/04/calibration-of-autocad-software/

M6700, Nvidia K3000M, 32GB, 512 SSD
Win 7 Ultimate 64
Inventor 2014
*Expert Elite*
karthur1
Posts: 4,049
Registered: ‎04-27-2005
Message 7 of 16 (351 Views)

Re: Calibration of CAD software

10-23-2012 05:49 AM in reply to: karthur1

I agree with everyone here that this request is TOTALLY rediculous.  I think he is was just looking for something to put in his report actually. But, now that he has put this in there, we have to resolve it or we could lose our certification.

 

He didn't ask about the CAM software or Excel that we use. I didnt want to open that can and cause us more grief.  I looked at the "Ask the Expert" page that a couple of you linked to, and that is basically what we told him.

 

JD, this is AISC auditor. 

*Expert Elite*
Posts: 25,352
Registered: ‎04-20-2006
Message 8 of 16 (335 Views)

Re: Calibration of CAD software

10-23-2012 07:04 AM in reply to: karthur1

I understand what he was after (I think), how do you validate your processes.
But the terminology he used and if no other context of the question was presented I would liken this to a Dilbert cartoon ( http://dilbert.com/ ) - jargon with no meaning, trying to sound professional but instead sounding clueless.  And to top it off it makes the responder seem to be the clueless one unless they instantly recognize the institutional jargon and respond appropriately.

In the follow-up when you do respond appropriately the reviewer will notate that as progress in response to his review.  Nothing changed, just the perception. 

 

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2014 Edu 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Employee
Posts: 80
Registered: ‎07-31-2008
Message 9 of 16 (325 Views)

Re: Calibration of CAD software

10-23-2012 07:19 AM in reply to: JDMather

Maybe the auditor was thinking about any analysis you do.  You may have been on the right track with your initial mass properties idea.  Do you perform any stress analysis on your designs?  There are certifications for FEA codes.  This is really CAE not CAD, but who knows.  The guys over in the Simulation discussion group might be able to help.  Here's a certification thread over there: http://forums.autodesk.com/t5/Autodesk-Simulation-Mechanical/Algor-Simulation-Accuracy-Benchmarks/m-...

 

I hope this helps,

 



Roger Mollon
Sr. Director, Software Development
Design, Lifecycle, & Simulation Product Group
Autodesk, Inc.
*Expert Elite*
mcgyvr
Posts: 6,410
Registered: ‎12-01-2004
Message 10 of 16 (319 Views)

Re: Calibration of CAD software

10-23-2012 07:25 AM in reply to: rogermollon

FEA is NOT a measurement tool either and as such should NOT require calibration/validation.

No one in their right mind would rely 100% on the output of a FEA program. Its simply a "get in the ballpark" design tool that should NEVER replace real world performance measurments.

Did you find this reply helpful ? If so please use the Accept as Solution or Kudos button below.

Down with IDW/DWG files..... Long live 3D PMI... Hurry it up already..
-------------------------------------------------------------------------------------
2015 Product Design Suite Ultimate
Windows 7 64 bit
Core i7 4820k processor (OC'd to 4.4Ghz), Nvidia GTX 770, 16G RAM


You are not logged in.

Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register

Announcements
Are you interested in helping shape the Autodesk Community?
We’re looking at a few different ways to improve the “All Forums” landing page and need your feedback! If interested, please take a few minutes to fill out the following Usability Study. Thank you for your time!

Need installation help?

Start with some of our most frequented solutions to get help installing your software.

Ask the Community


Inventor Exchange Apps

Created by the community for the community, Autodesk Exchange Apps for Autodesk Inventor helps you achieve greater speed, accuracy, and automation from concept to manufacturing.

Connect with Inventor

Twitter

Facebook

Blogs

Pinterest

Youtube