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PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

(OP)
Ok, so I have not made a drawing template in years, I am having a little trouble setting up the tolerance notes. I think in the past I have used separate note block depending on the proces used i.e. injection mold, sheet metal, cast, machining etc. Is this common practice?? Also , for each one of these what would be a good starting point to show on the drawing notes. should I show 0.x, 0.xx and 0.xxx to three decimal places or just two? What would be good tolerances to start with on these. I have attached a screenshot of the notes for each one I was thinking, let me know what you think. Also is there an ASME standard or something people can look at to make templates like this? Thanks

RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

Looks good. make sure those tolerances work for your company.
If the tol are the same for mah/sm/cast/inj mold, you only need one block on the template.
I would add "UNLESS OTHERWISE SPECIFIED", and a degree symbol after the angle tol.

Chris, CSWA
SolidWorks 14
SolidWorks Legion

RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

Why do you have a smaller tolerance for one decimal place than for two decimal places? The angular tolerance is awfully small for a default, I usually use 2 degrees.

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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: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

Quote (imagineers)

Also is there an ASME standard or something people can look at to make templates like this?

Search Google for ANSI B4.3 smile

I could provide a link, but it would be illegal.

RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

(OP)
thanks guys, I think I will just use a standard 0.2, 0.10, and 0.5 for angle and then add tighter or looser tolerance on the drawing as per usual.

RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

It is common practice to use model-based definition for tolerancing components like castings, injection molded parts, composite structures, etc. You would use a drawing note that says something like "part shape is defined by digital CAD model XXXXX", "surfaces are within +/-.030" profile tolerance", etc.

RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

Erm, depending what drawings standards you are working to the number of decimal places corresponding to a certain tolerance may not work well with mm since some standards (ASME Y14.5M-1994 1.6.1c for example) don't use trailing zeros on metric dimensions.

Of course you could make an exception to this as long as it is clearly communicated/stated somewhere so all drawing users will know.

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RE: PLEASE HELP...TOLERANCE NOTES IN DRAWINGS

(OP)
thanks guys

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