standard metric tolerance in title block?
standard metric tolerance in title block?
(OP)
I am in the process of adding the standard tolerance for metric parts in the sheet format. The company I work for does not have a standard tolerances for metric in thier current sheet format. I don't want to add tolerances to every dimension. Can anyone help me? Thanks
LuisAlberto
LuisAlberto





RE: standard metric tolerance in title block?
js10 (JS10)
These tolerances are nominal size dependent, it means that
10mm js10 has smaller tolerance than 100mm js10.
You would have to educate a lot of people if you want to go this way.
More about the ISO tolerances / fits is in Machinery's Handbook.
gearguru
RE: standard metric tolerance in title block?
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand
RE: standard metric tolerance in title block?
Luis Rivera
RE: standard metric tolerance in title block?
You could replace the existing block tolerance data in the title block with a statement such as "SEE ANSI B4.3 FOR GENERAL TOLERANCES" or simply "X" out the existing tolerance data and send the user to B4.3 via a general drawing note.
GDTGUY
RE: standard metric tolerance in title block?
I need to retract the second part of my last posting.
You do not invoke ANSI B4.3 on the drawing!!! ANSI B4.3 simply provides options for specifying the tolerance on the drawing for metric dimensions. (I got my standards crossed up and was thinking of ANSI B4.2 Preferred Metric Limits and Fits!!!!..........sorry!)
Take a look at the options shown in ANSI B4.3. One of them will probably meet your needs.
GDTGUY
RE: standard metric tolerance in title block?