CoCreate User Forum  

Go Back   CoCreate User Forum > Applications > Data Management

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Old 09-20-2011, 11:26 AM
gmatelich's Avatar
gmatelich gmatelich is offline
Registered User
 
Join Date: Oct 2002
Location: Bellevue, WA, USA
Posts: 396
Major rev vs. minor rev

We are preparing to migrate from WorkManager to ModelManager and one of the new features I'm trying to plan for is using minor revisions. What kind of guidelines do you follow regarding when to overwrite, when to minor revise, and when to major revise?

Just a couple of my concerns are:
  • How do you deal with major/minor of linked models and drawings - do you let the minor revs of models get out of sync with drawings or still keep them matched?
  • It seems that overwrite vs minor rev is a bit of a judgement call. In a sense the safe answer is always minor rev, but then you're artificially filling the server's storage with negligible benefit.

I appreciate any thoughts and details you've got, if I'm a little unsure - my users are going to really be lost.

Last edited by gmatelich; 10-05-2012 at 11:54 AM.
Reply With Quote
  #2  
Old 09-20-2011, 01:18 PM
BMaverick's Avatar
BMaverick BMaverick is offline
Registered User
 
Join Date: Mar 2009
Location: Tennessee, U.S.A.
Posts: 267
Re: Major rev vs. minor rev

Our files run with two change items.

Major part or product changes are called PI (Product Index). This is when a model(s) are changed for fit, form or function.

The minor part or product changes are called DI (Drawing Index). This is when notes, tolerances or charts are added to the drawing and nothing affects the PI. The DI is also reved up when the PI is changed to state that the model change has taken place.

We could have a part of 1234DI5PIC, where the DI = 5 and the PI = C The p/n is still 1234
__________________
Support Your Local Sheriff - At high noon

Jason: "How much does it pay?"
Citizen: "Well, none of our other sheriffs ever lived long enough to find out."

Co-Create 2007 (15.50G)
ANSYS Workbench 14
SolidWorks 2011
UGNX-7.5 / TeamCenter UA 8
PADS 2000
Applicon Bravo
Autotrol
CADAM
Pro/E
Reply With Quote
  #3  
Old 09-21-2011, 05:55 AM
Gary Brauch Gary Brauch is offline
Registered User
 
Join Date: Oct 2002
Location: Colorado
Posts: 220
Re: Major rev vs. minor rev

Greg,
Looking at it strictly from the process side of things, not taking into consideration any MM rules.

First off, I would not allow any user to use overwrite. People are lazy and will take that route even when they KNOW they shouldn't.

It should go without saying, but anything that changes fit, form or function of part/assy is a major rev.

Model side:
Any physical change to a model (shape) would require a major rev.
Non-physical changes (part color, facet refinement) would be minor rev.

Drawing side:
Any physical change to the part and update is major rev.
Any note changes (like material, casting standards, inspection notes and such but no change to model) that effect the part is major rev.
Any change that doesn't effect the shape or function of the final part (spelling correction, adding a missing or reference dimension) would be a minor rev.

Document it well so there can be no misunderstanding.

Also, in my opinion, model and drawing should always be the same major revision. Using that logic, any major rev change to a model should require a drawing update and therefore they move together. On the other hand, a major revision changed to a drawing may not require a change to model (like an inspection note), but I'd force it to change anyway to keep them on the same page.

Note that all of the above is just my opinion.
Reply With Quote
  #4  
Old 09-22-2011, 10:12 AM
mrstero mrstero is offline
Registered User
 
Join Date: Dec 2009
Posts: 61
Re: Major rev vs. minor rev

yep, definitely do NOT allow people to "overwrite". Storage is cheap these days, so if they've got lots of minor revs - no big deal - plus, if they need to revert back to something they saved in the past week (for instance) it is very easy if you can easily refer back to an earlier minor rev.

Whatever you do, ...avoid customizing Model Manager - think very seriously about changing your business processes rather than customizing MM.

good luck.
Reply With Quote
  #5  
Old 09-23-2011, 08:31 AM
frosendo frosendo is offline
Registered User
 
Join Date: Oct 2002
Location: San Jose, CA
Posts: 18
Re: Major rev vs. minor rev

How do you deal with major/minor of linked models and drawings - do you keep let the minor revs of models get out of sync with drawings or still keep them matched?

For our business rules we do require user keep drawings in revision sync with their 3D models. We also, don't use minor revisions at all. This is more of an SAP restriction but we push that down to Model Manager as well.


It seems that overwrite vs minor rev is a bit of a judgment call. In a sense the safe answer is always minor rev, but then you're artificially filling the server's storage with negligible benefit.

Users can overwrite all they want for any item they own in a WORK state. Once the item is to be shared with a supplier or released to production there is a state change done in Model Manager. Once out of the WORK state the system prevents users from overwriting the items even if its just a desired text/typo change. At that stage users will have to revise.
__________________
____________________

Felipe Rosendo
MCAD Tools Manager

Agilent Technologies
Reply With Quote
  #6  
Old 09-28-2011, 02:14 PM
gmatelich's Avatar
gmatelich gmatelich is offline
Registered User
 
Join Date: Oct 2002
Location: Bellevue, WA, USA
Posts: 396
Re: Major rev vs. minor rev

Thanks for the feedback. That all sounds pretty much how I saw things as well. I appreciate your caveat, Felipe, about overwrite when they own it in a WORK state. Depending on the complexity of the part, I may save a part many times in the design phase to the point I may have 30 iterations or more before I'm ready to release. Between overwrite and minor rev I'll be able to have a few snapshots in the design process, but not every insignificant change. Once it's released it will be very nice to have minor rev available for color and facet changes, which in our current system I'm somewhat constrained to use overwrite rather than major rev.

How about when you're dealing with assys? I assume cutting planes, configurations, and attaching additional viewsets (like for an illustration drawing) would be minor rev. Revisions of subparts (which sets the assys' modified flag) seems like a judgement call where you determine whether the assy is interchangeable at that level or not. If interchangeable - minor rev. If not interchangeable - major rev up the chain of sub-assys until you get to a level of interchangeability.
Reply With Quote
  #7  
Old 09-29-2011, 03:19 PM
frosendo frosendo is offline
Registered User
 
Join Date: Oct 2002
Location: San Jose, CA
Posts: 18
Re: Major rev vs. minor rev

How about when you're dealing with assys?

Great question. In our case we have SAP PLM linked with an integration to Model Manager. As a rule we only check-in part numbers (assy or stand alone parts) that are items we must procure. Upper level assemblies are often not checked into SAP by R&D but eventually get checked-in from MFG Engineering as they document manufacturing or assembly materials and then at this stage those assy/part numbers get checked into SAP with their configurations, exploded view drawings etc.
__________________
____________________

Felipe Rosendo
MCAD Tools Manager

Agilent Technologies
Reply With Quote
  #8  
Old 10-05-2011, 01:54 AM
ludw ludw is offline
Registered User
 
Join Date: Dec 2006
Location: France
Posts: 86
Re: Major rev vs. minor rev

Most of customers I know are just using major version. They overwrite as they can (I mean as long as the elements are overwriteable from access rights) and they revise to document any change. Most of times Models and Drawings revisions are sync, with some exceptions. Rare are customers I know using masterdata versionning, and they do that just for some MD classes.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 05:32 AM.



Hosted by SureServer    Forums   Modeling FAQ   Macro Site   Vendor/Contractors   Software Resellers   CoCreate   Gallery   Home   Board Members   Regional User Groups  By-Laws  

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.