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Starting With a BOM

111 REPLIES 111
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Message 1 of 112
Anonymous
2844 Views, 111 Replies

Starting With a BOM

Hi, 

 

I have been working with Inventor for a little while now and most of it has been tinkering and figuring things out about the program.I have avoided using the BOM because it seemed to me to be whole other aspect to the program that I would have to dedicate some focus too.

 

I am comfortable enough now with my modelling capabilites so I decided to give the BOM a try. Instant failure. No idea what im doing. 

 

I decided to create a very small assembly and try again with that. Failed again.

 

Can someone please point me to a nice guide to starting to use the BOM?

 

Also, in all of my models I have generated all shapes with my own sketches and extrusions. When I enter the BOM, there is either no information, or the quantites of the exact same component do not match up, one will be a quantity, the other will be a length. Also, most of our products are made from structural steel so instead of the line item just showing the part I would obviously need it to show what it is cut from, and its length. I now realize I might have made a huge mistake by not strictly sticking to the content center because after using a few shapes from there, the BOM seemed to reflect it much better. Is there any fixing this? I am a lost cause right now!

 

Thanks

Sandro

111 REPLIES 111
Message 81 of 112
karthur1
in reply to: Anonymous

Did you un-check the ones you dont want to see in the Config Libraries panel?  If you did, then when you place a part, that is the only parts you will see.

Message 82 of 112
blair
in reply to: Anonymous

You need to add it to your Projects File by selecting the "Check-Mark". This will allow you to use the new Library, you may want to de-select the old Library.


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 83 of 112
Anonymous
in reply to: blair

Hey again guys,

been a little busy so havent had a chance to keep moving on this..

anyways I did what you guys said and unchecked the other libraries. I added only what we use to my custom library.

The problem I am having now is that the changes i make to the family are not being reflected in my BOM. I might be doing something wrong, but from the content center editor I opened up the Bolt family table, I then went all the way over the "Part Number" column and went to "Column Properties" and replaced the expression to {SIZE} so that the designation would be the part number instead of AS2465 - 5/8 x 2 UNC. I did a couple of things basically the same as well..
the problem is that when i go into an assembly and place one of these bolts and go into the BOM, the Part Number still reads AS2465 - 5/8 x 2 UNC.

What is going wrong here? I thought about what you guys said and I am starting to agree that dropping custom named fasteners is a really bad idea so simply changing the way the Content center names things is a way better option
Message 84 of 112
blair
in reply to: Anonymous

There is a small icon on the tool bar to "refresh" CC items. This forces Inventor to update all CC items with the current Family Table Properties.


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 85 of 112
johnsonshiue
in reply to: Anonymous

Hi Sandro,

 

Based on the information you provide so far, it is unclear to me what kind of failure you are encountering in BOM and what you are trying to achieve. Do you mind sharing the simple failure example with me? I would like to understand it better and see where the problem is.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
Message 86 of 112
Anonymous
in reply to: blair

blair,

I clicked the little refresh button but it doesnt seem to affect anything. The table properties appear the way I want them but when I open a brand new assembly file and simply place one bolt and then check the BOM, it appears as if i have changed absolutely nothing.
Message 87 of 112
Anonymous
in reply to: johnsonshiue

update...

ok i think I might know what is happening although I really dont understand why. I opened up a new window called "family properties" and in that window there is a field named "Family Name" and "Family Description". I think these values are somehow overriding what I am putting into the "Family Table" because the family description is exactly what is written in my BOM under the description even though i clearly outlined in the family table for the "Description" to be an expression of the {Designation} and to be mapped to the iProperty "Project.Description"...

Am I doing something wrong, or should I just start changing things in the "Family Properties"?
Message 88 of 112
blair
in reply to: Anonymous

CC items always point back to the Family Table that was used to create them. You would need to create a new CC Library by either copying and existing CC library that's Read Only into your new Read/Write Library or create a new one from scratch

 

Then edit that Family Table to get the information/properties as you want it. Then add this Library to your Project File for use. Any items created from this new Library will be "Linked" back to this particular Family. Any changes to your Family Table will be pushed through to the CC items within the model when the Update CC items is selected.


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 89 of 112
Anonymous
in reply to: blair

blair,

I feel like I have done everything that you mentioned. I created my own custom library and copied the families I use to it. I know this is the library that appears in my assembly files because it only contains the families I have copied to it.
What I am getting from your message is that I need to "Suppress Link" back to the original CC, is that what you are telling me?
Message 90 of 112
blair
in reply to: Anonymous

If the CC items have been created as CC and not Custom (radio button selected) when they are created, I've never seen where the link can be broken. You can't change existing CC items.


Inventor 2020, In-Cad, Simulation Mechanical

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Message 91 of 112
Anonymous
in reply to: blair

ok Im a little confused again..

I placed the bolt as custom and then I checked the BOM and it appears exactly the way I want it. This is great but is this not exactly what I was being told earlier to avoid? If I place as custom, dont I create a separate file which then would cause an enormous quantity of files over time after I "Copy Design" again and again for every job?
Message 92 of 112
blair
in reply to: Anonymous

We have a bolt "Library" and the same bolts get used over and over as long as they are the same size. We have a few Project Files,

 

1.) Our own product

2.) Custom work for Customers

3.) Our Internal Jigs/Fixtures.

 

The #2 Custom Work Project uses our Own Product as a Read Only Library, this allows us to use our stock components and restricts any modifications to these items.

 

Our Jig Project uses our Own Product as a Read Only Library this allows us to use our stock components and restricts any modifications to these items.

 

I don't have the same 1/2 x 3 UNC Gr 8 bolt residing in 3 or 4 different work folders. It resides in only one Library Folder and other Project Files point to that folder.

 

The BOM or Parts List doesn't care which folder the part resides in, as long as the Project File includes that Library in it's path.

 

Any items that come from supplies are stored in their own Library Folder that is "Read Only". We do have a "special" Project File that is used to work with the Library Folders should items change slightly from the supplier.


Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 93 of 112
jtylerbc
in reply to: Anonymous


@Anonymous wrote:
update...

ok i think I might know what is happening although I really dont understand why. I opened up a new window called "family properties" and in that window there is a field named "Family Name" and "Family Description". I think these values are somehow overriding what I am putting into the "Family Table" because the family description is exactly what is written in my BOM under the description even though i clearly outlined in the family table for the "Description" to be an expression of the {Designation} and to be mapped to the iProperty "Project.Description"...

Am I doing something wrong, or should I just start changing things in the "Family Properties"?

I believe you were on the right track with this.  If you have the table and the Family Properties both trying to fill something in to the Description field, one of them is going to win.  The choice of whether to place as Standard or Custom may only be changing which one gets retained.

 

I would suggest remapping the Family Property to something other than Description (Title, maybe), and see if that resolves your issue.

Message 94 of 112
Anonymous
in reply to: blair

blair,
Wow...That is immensely enlightening...
This sounds like EXACTLY what I want to accomplish. Once I have perfected my models, drawings, and BOM, this sounds like it will be the direction I will take when we finally actually implement Inventor into real jobs. I will have to come back to you in the future for help on creating the different projects and read-only products though!

I think this information will keep me moving with the BOM for a little bit. Ill come back with further questions. Thanks!
Message 95 of 112
Anonymous
in reply to: jtylerbc

hey again,

So I have been messing around with my Custom CC for a little while now and I am loving the results. I am getting closer and closer to having my BOM appear exactly the way I want.
My new issue is the file naming again. If you can remember, I want to have each piece of material named so our fabricators know where it goes. I wanted to use the "File Name" as the "Description" to accomplish this. Unfortunately, The BOM looks back to the family table to get this information which is BEFORE I actually name the file so when I open up the BOM, the description field is blank even though the file does have a name.
Is there a way to insert iLogic rules into your custom CC OR some other way to get new parts to use the file name as their description.
Earlier in this thread, i believe it was John that gave me this code:

iProperties.Value("Custom", "File Name") = ThisDoc.FileName(False) 'without extension

This made a custom iproperty for the file name. I then went to the iProperties and under the Description field typed:

=<File Name>

This gave me what I wanted. I am looking to avoid doing this for every single new part because at that point I might as well manually type in a description for that part which will be later on saved as a piece of our product in a read-only library like blair had just mentioned to me.

Please let me know if any of this makes sense or if you know how to inset rules into a family!

Thanks
Sandro
Message 96 of 112
jtylerbc
in reply to: Anonymous

Get one bolt from the family set up the way you want it (including any necessry iLogic rules), then use that bolt to replace the Family Template of your custom CC family.

Message 97 of 112
Anonymous
in reply to: jtylerbc

John,

This sounds so perfect I am getting excited. Can you please explain to me how to do this? (everything after setting up the bolt). I have no idea how to replace the family template.

Thanks!
Message 98 of 112
Anonymous
in reply to: jtylerbc

actually sorry, I began to do this and I immediately had a hiccup. Does it matter which bolt? Should I place as custom or standard?
Thanks
Message 99 of 112
jtylerbc
in reply to: Anonymous

Does not matter which bolt size, as long as it is from that family (the system won't let you replace the Family Template with a part from another family).

 

Technically, it doesn't matter whether it was placed "As Custom" or "As Standard" for use as the Family Template.  However, to edit the part to add the rule (and any other changes you want to make), you will need to either place it As Custom or move the file out of the Content Center folder.  Otherwise Inventor will consider it read-only, as mentioned earlier in the thread.

 

Go into the Content Center Editor, right-click on your custom family, and pick "Replace Family Template."  Then just browse to your customized bolt and select it. 

Message 100 of 112
Anonymous
in reply to: jtylerbc

John,

This is almost perfect. This process is going to save me so much time down the road its incredible (so I think). I have done everything you said but am still having issues. I placed the bolt, added the rule which would change the description, and it worked perfectly.

I closed everything up, opened a new assembly, and placed a new bolt (custom). I opened up the BOM, and the Description was still the one in the Family Properties "Unified hex bolts....etc". So I went into the bolt, and saw that the rule was there as it should be, so I ran it. I went back to the BOM and it was fixed.

I am hoping there is a way around this so I do not have to open up every single bolt and run the rule so that it appears properly in my BOM. I can't see this being an issue with structural shapes because I will be manipulating them anyways but for fasteners this will be brutal.

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