stock material roughness override...
stock material roughness override...
(OP)
forgive me in advance on what is probably a basic drafting question. We have a roughness callout in our title block tolerances, but I want to call out a stock material and not have the surface roughness tolerance apply. i.e: I dont want them to do anything with the surface of the stock material except a finish callout later... its not critical.
does simply indicating the material as stock override all the title block tolerances specifically the general roughness? Or is it implied to only override the stock material dimensional tolerances?
does simply indicating the material as stock override all the title block tolerances specifically the general roughness? Or is it implied to only override the stock material dimensional tolerances?
lightweight, cheap, strong... pick 2





RE: stock material roughness override...
Several companies resort to “creative drafting” techniques, mixing written rules with made-up ones.
Generally, surface finish symbol applies to machined faces, which brings another question: on your drawings, is it possible to clearly distinguish between machined and raw surfaces?
Either way, don’t be afraid of creating a note to clarify your intent.
RE: stock material roughness override...
How about adding a view showing a typical section, and apply a surface finish specification that the stock material meets easily?
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JHG
RE: stock material roughness override...
RE: stock material roughness override...
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: stock material roughness override...
All are good suggestions, the roughness value in the title block is linked to a smart property so it can be edited to accommodate a stock callout but I don’t know how to find the roughness value of the tube. I think in this case I can add a note stating ‘roughness applies to machined faces only before finish is applied’
lightweight, cheap, strong... pick 2
RE: stock material roughness override...
To designate the surface left in the state from previous manufacturing process use "the circle in the vee" suggested by pmarc.
If you cannot place “no machining” symbol into your title block, leave title block value for machining and create note like “SURFACES IDENTIFIED AS “STOCK” (the circle in the vee)”
You can also attach “machining prohibited” symbol to your “stock” dimension as well.
It is hard to be precise without knowing how exactly your part and your title block look like, but I hope you were given enough ideas for today
RE: stock material roughness override...
You mentioned "finish"
Are we talking paint or something like zink-plating?
RE: stock material roughness override...
The part gets polished. Aside from that my company has incredibly strict confidentiality agreements and I’m not comfortable describing the actual part, material and specific processes. I think I could get away with explaining why I’m on a web forum asking drafting callout questions, but not describing the parts I work on.
lightweight, cheap, strong... pick 2
RE: stock material roughness override...
Now I am genuinely confused: why do you care to specify raw material surface if the part is machined anyway?
RE: stock material roughness override...
lightweight, cheap, strong... pick 2