how the present a "liner" 2

[ilkea]

hi,

today, I prepared an assembly drawing in which basicly two pieces will be assembled together, the problem is, there should be a liner material in between. The thickness of the liner will be at most 0.1mm. So, what I did is, in bill of material on the drawing I gave the three components, i.e the two pieces that will be assembled and the liner material. But on the drawing I only put ballons to the two pieces, and in the notes I wrote, "before assembling part 2 to part 1, the liner will be applied to the part 1 according to the document xyz. " and I did NOT put a ballon to the liner. And this caused a little (!) argument with my project manager.

So is there a problem in what I did?

because of the argument, I was asked to prepare a formal report on this problem. So I need to refer a standart while explaning this. Could you please help me?

thanks in advance...

 

[aardvarkdw]

If you have the part (liner, tape, silicone, etc...) modeled, it should have a part bubble. If you don't how does anyone know what it is? In the case of Loctite, I agree with CBL "If ballooning, either show everything[/i] ballooned or nothing ballooned. No halfway measures. And don't forget you can use Stacked Balloons. (if your CAD program allows)". You can always balloon the fastener and then attach a second balloon (no leader)to the first that labels the loctite.

 

[wgchere]

Yes, and the MRP Planner who transcribes the BOM from the drawing isn't expected to read the notes.

But the person who assembles the assembly and the inspector who inspects it before shipping is expected to, and they are who the assy dwg is for. I don't agree that "If ballooning, either show everything ballooned or nothing ballooned. No halfway measures." But all items in the BOM MUST BE called out in a balloon on the face of the drawing or in a note, identified by item. Simply calling out "Loctite 410" in a note isn't sufficient. "Loctite 410, Item 25, ..." is admissable. Of course, this would ne a "flag" note and be on the dwg next to the callout of the fastener. in this case no balloon would be neccessary in the callout, but it wouldn't hurt either.

If I can't hi-lite every BOM item on an assembly, it goes back to the one who generated it.

 

[ctopher]

wgchere,
I agree. A star.

Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716

 

[wgchere]

Wow! my first one!!!

 

[Tunalover]

Your boss is full of horsehockey! It is fine to call out materials (especially bulk materials) in a note with NO BALLOON AT ALL. For God's sake this business is hard enough without people (especially bosses) coming up with self-spun arbitary no-value-added drafting rules!

Ask your boss to show you a drafting manual or industry standard that says that all materials on an assy drawing must have balloons. If he can't come up with something then tell him to pound sand. If he says "just do it" without fair rationale then find a new job or new boss!




Tunalover

 

[drawoh]

I agree with Tunalover. We are up against some limitations of CAD software for one thing.

We insert empty SolidWorks part models in our assemblies to cause adhesives like Loctite to appear on our BOMs. There is nothing to attach a balloon too. SolidWorks re-orders and re-numbers its parts lists, so any item numbers we type out manually are likely to become wrong. Anything I can attach a balloon to is reliable, of course.

I make sure my drawing notes conform to my BOM entries. For example, when I write a note telling people to apply lubricating threadlocker, there is an entry on the BOM, called "THREADLOCKER LUBRICATING".

JHG

 

[ewh]

Can't you add a point to the items such as adhesives? This gives you something to anchor the balloon, and keeps the BOM associative.

 

[CorBlimeyLimey]

You could also attach the leader to the origin of the dummy part.


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[Tunalover]

Why are you folks wasting your time on this issue?


Tunalover

 

[CorBlimeyLimey]

Probably for the same reason you are.


Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091

 

[CorBlimeyLimey]

On the other hand I don't see offering a solution to someones problem/question as being a waste of time.


Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091

 

[ewh]

I heartily agree with CBL. It is not so much a matter of standards as it is of leveraging the software. It takes VERY little effort to balloon items of this type. That information is then automated for use by varying departments. If you feel that your job isn't worth putting forth a little more effort (for a reasonable purpose), then more power to you. I would rather use the software to its full advantage.

To answer the OP's question, it depends on which standard you read. According to the Global DRAWING REQUIREMENTS MANUAL (for departments of defense and commerce)and the Genium MODERN DRAFTING PRACTICES AND STANDARDS MANUAL, the item no. column itself is optional. Regarding bulk items, the Global manual states "Bulk items are those necessary constituents of an assembly... for which the quantity required is not readily predeterminable or if knowing the quantity, the physical nature of the material is such that it is not adaptable to depiction on a drawing; or which can be cut to finishd size by the use of such hand or bench tools as shears, pliers, knives, etc., without any further machining operations and the configuration is such that it can be fully described in writing without the necessity of pictoral presentation." The Genium manual has a similar definition.
If your liner can be classified as a bulk material, then I agree that a balloon is not necesary, as long as it's application is refered to elsewhere on the drawing, such as a flagged note.
Ask (nicely) your boss what standard requires balloons. If he doesn't know or can't tell you, or because he "says so", it may be time to start looking around. When the boss starts making arbitrary rules without being able to back them up, it is time to open your eyes to other possibilities.

 

[ctopher]

A star for ewh!
My daughter says "Everything should have a balloon".

Chris
Systems Analyst, I.S.
SolidWorks Pro 06/PDMWorks 06
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716