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  1. #11
    Luminous Being dbroada's Avatar
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    my first job (1970) used a coding system where each number DESCRIBED what the part was.

    The first number was (something like) 1=raw material, 2=mechanical component, 3=electrical component, 4=detailed item etc. Using this you could locate other 25mm metal spacers before drawing a new one. It was quite complicated and used many look up tables but resulted in a nice 5+3 number, the final 3 being the unique identifier. Of course this was long before the DOS need for 8 figure numbers.

    At my last place we used Project Number, Area code, Identifier code, sequential number, sheet number. Identifier code included GA=general arrangement, MD=mechanical detail etc. While this didn't allow you to locate all 25mm spacers you did know that if you wanted to look for them they would be in the MD section within other projects. This wasn't perfect but was an easy system to get used to.
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  2. #12
    Super Member stevsmith's Avatar
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    pm me with your email address, I have several documents that I created for my old company that may help with what you require.
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  3. #13
    Super Member stevsmith's Avatar
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    Also, you may want to look into Solidworks' Workgroup PDM for document management of your cad files.
    "The fear of death follows from the fear of life. A man who lives fully is prepared to die at any time"

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  4. #14
    Luminous Being dbroada's Avatar
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    Quote Originally Posted by stevsmith View Post
    pm me with your email address, I have several documents that I created for my old company that may help with what you require.
    I don't think he will be able to use the message system until he makes 10 (technical) posts.
    "That's it. It's one thing for a ghost to terrorize my children, but quite another for him to play my Theremin." Homer Simpson
    "Everything in drafting is logical. Except what isn’t." - Gavin Guile. (from the Lightbringer series of books by Brent Weeks)

    Dave

  5. #15
    Senior Member TheCADnoob's Avatar
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    I deal with a lot of different sources for drawings. Most have a predictable number convention. Depending on how your company is set up there is (or should be) some way to uniquely identify the order or request or job. Ive even seen some use accounting codes, but i would recommend keeping the numbering system under your control. The last thing you need is something like the next Sarbanes Oxley come around and screw up your companies workflow if you are tied to accounting. Most ive seen look something like this.

    XYZ34-3587-A-S-0001-R1

    This would be 'Buisness unit-Job number-discipline-subdiscipline-unique sequential drawing number-Revision'

    Business unit is if there are multiple locations you can subdivide by your east side west side branch. Job number is the job number. the rest are self explanatory. you can add, mix and match elements to make it fit your needs but the basic idea is start with the broadest description you wish to capture and then work you way to the most unique description. Something ive seen as well is breaking out sheet size (im not a fan of this), project start year, 2d/3d designations etc..

    For assemblies there is usually some sort of hierarchy or classification that the company follows. Im not as intiment with these as they are driven by the scope of their manufacturing. Basically for each part there is a classification and that is part of the drawing number.

    XYZ2-BB-10
    "Model number-part classification (housing, bearing, etc.)-part number

    The biggest hurdle is revision control and the rest of the naming convention should be driven by your companies structure and deliverable and management needs. Dashes aren't always used they just help visualize whats going on with the numbers.
    Last edited by TheCADnoob; 5th Nov 2015 at 06:49 pm.

  6. #16
    Quantum Mechanic ReMark's Avatar
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    And just how would you handle legacy drawings that were named using the max of eight characters back in the day?
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    I'm now a full member of the Society for the Promotion of Mediocrity in CAD. Standards? We don't need no stinkin' standards! Take whatever advice I offer and do the opposite.

  7. #17
    Senior Member zaphod's Avatar
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    are these numbers for standard parts? if so you should set up an excel file as well.

    for customer drawings we use 4 sets of numbers, region_project_item-page

  8. #18
    Senior Member TheCADnoob's Avatar
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    Quote Originally Posted by ReMark View Post
    And just how would you handle legacy drawings that were named using the max of eight characters back in the day?
    Id find a corner to go cry for a little while, or i would go ask a grey beard how they did it.

    I've seen some of the legacy stuff my company used. There have been a couple iterations. The longest lasting one i believe shortened all the preceding data to 4 digits and used the last couple for the drawing numbers. They just used a look up table to 'translate' them back.

    They did this convoluted thing for a little while where they would have initial digits act as an analog to trigger certain classification and then add the values of the other two of the numbers, but i never quite understood how they later deconstructed the number. It sounded really cool, like something out of Shannon lossless coding theorem, but way to complex to make it viable.

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