Dual dimensioning units - surface roughness
Dual dimensioning units - surface roughness
(OP)
I've been asked to convert a couple of drawings to dual dimensioning units. This is easy to do with our CAD system for linear dimensions and geometric tolerances. Change on drawing configuration option and it's done. However, that has no effect on surface roughness symbols. I've never seen a dual dimensioned surface roughness symbol. Our symbols just have a text string for the roughness. Is it acceptable to do this:
50[1,2]
for the micro-inch[micron] values?
50[1,2]
for the micro-inch[micron] values?
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RE: Dual dimensioning units - surface roughness
Chris
SolidWorks 11
ctopher's home
SolidWorks Legion
RE: Dual dimensioning units - surface roughness
Would you consider placing conversion table somewhere near titleblock?
Naturally, the note should be provided saying something like “SURFACE ROUGHNESS IN MICROINCHES, FOR MICROMETERS CONVERSION SEE TABLE 2”
RE: Dual dimensioning units - surface roughness
One of the many arguments against dual dimensions traditionally is that the conversions might be wrong. It sounds like this is still true.
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JHG
RE: Dual dimensioning units - surface roughness
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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: Dual dimensioning units - surface roughness
http://content2.smcetech.com/pdf/Supplier_QA_Manua...
This is remarkable document, created to ”level the field” for the suppliers, and make sure all of them will interpret company drawings in the same way.
The surface roughness chapter starts on the bottom of Page 18.
I am not saying this is the only way to do it, just an example.
RE: Dual dimensioning units - surface roughness
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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: Dual dimensioning units - surface roughness
I have been working with drawings using such convention. As long as there is a clear explanation on the drawing area or in a document referenced on the drawing as to what is what, I see no issues with that.
Correct conversion of dual dimensions is a different story.
RE: Dual dimensioning units - surface roughness
1. Dual dimensions on surface roughness
2. Use vendors incapable of unit conversion