Need balloon if there is only one item in BOM table?

[Siva Mareesan]

Do we need to show balloon for only one item present in BOM table in the drawing as per ASME standard ? Other items are label & they cannot be shown in drawing.

 

[jasoncwells]

Balloons (aka find numbers, item numbers, part numbers) are pretty wide open. They really only apply to assembly type drawings. It sounds like you have a detail drawing. I would say no. You don't need a balloon.

What does your organization require? Everybody does BOMs differently.

 

[Siva Mareesan]

Thanks for your reply Jason,

It is a assembly drawing which includes a part and 2 labels.

So totally 3 items in the BOM.

Since the label is purchased outside, it is not shown in drawing.

So my question here is , do I need to show balloon for the part ?

Is there any ASME standard which says we need to show balloon for one single item in the BOM ( when other items can't be shown in drawing ) ,

 

[jassco]

Hi, Siva:

Yes, you do need a balloon to show the part. You have a BOM with 3 items, 2 of which are hidden. Your BOM needs to have 3 different items even though you chose to make 2 of them invisible.

Best regards,

Alex

 

[jassco]

Hi, Siva:

Not only you need a balloon for the part, but also you need a note on your drawing to indicate that the other 2 items are hidden.

Best regards,

Alex

 

[Siva Mareesan]

Hi Jassco,

Thanks for your reply. Is there any ASME standard regarding this?. I need some written standards to circulate this to my team.

Kindly snap a page or paragraph that speaks about this or at least help me with the ASME standard name .

Thanks
Siva M

 

[3DDave]

I would have guessed that it would be common sense to list all the items of an assembly, but here is the relevant standard:

https://www.asme.org/codes-standards/find-codes-standards/y14-34-associated-lists

also

https://www.asme.org/codes-standard...ng-drawing-practices?productKey=N1381T:N1381T

 

[hatsegal]

Siva M,

You mentioned 1 part and 2 labels make up the assembly drawing.
Curious...
1. Are the labels being attached to the part?
2. If so, is there a specific location on the part that they need to be placed?
3. If so, how is that location specified / noted?


Cheers, hatsegal
"Think first"

 

[Siva Mareesan]

Hi hatsegal,

Thanks for your reply. Its just a QR Code & Retail label. Regarding the label position, it is located in the part drawing with just a Rectangle box showing the position of the label in the part.

The labels are not shown in drawing.

I agree with Jassco reply " Not only you need a balloon for the part, but also you need a note on your drawing to indicate that the other 2 items are hidden."

I kindly request someone to snap a page or paragraph that speaks about this in the ASME standard.

Thanks
Siva M

 

[3DDave]

Is there a note that tells what that rectangle means?

Does it say, apply just any random label you find on the floor to this location?

One approach that the US Military uses is to not have any balloons at all and just put the actual part number of the item with an arrow to the item, so the label would be "LABEL------>" Because balloons are to let the user have a separate list of items; apparently that is not useful in this circumstance, so this would also work just the same.

 

[MintJulep]

Regarding the label position, it is located in the part drawing with just a Rectangle box showing the position of the label in the part.

The labels are not shown in drawing.

Is it Schrodinger's label?

It can't be both shown and not shown at the same time.

 

[jassco]

Hi, Siva:

3DDave answered your question. You need to look at definition of BOM (Bill Of Material). "ASME - Associated Lists Y14.34" defines what a Bill of Material is. You can also look it up at "assembly drawing views" in ASME Engineering Drawing Practices Y14.100. I read these two standards long time ago, but I don't have copies of them.

The trick is how you get the labels. When you order this part, does it come with labels? If not, then you should not show the labels on this part drawing. The labels belong to an assembly where this part is used. On this assembly model and/or drawing, you need to describe relationship between this part and the labels. It is not appropriate to show the labels on drawing of this part.

If the labels come with the part, then they (labels) are not items. You should not show them in BOM of your assembly.

Best regards,

Alex

 

[Siva Mareesan]

Hi Jassco,

Thanks for your answer

It was a healthy conversation.

Thanks
Siva M