symbol identification question, one more
symbol identification question, one more
(OP)
Hi,
I got a sheet metal part drawing showing the symbol as attached I never seen before. Any help so I don't have to guess? The drawing is from Europe.
I got a sheet metal part drawing showing the symbol as attached I never seen before. Any help so I don't have to guess? The drawing is from Europe.





RE: symbol identification question, one more
RE: symbol identification question, one more
It indicates that, you need to bend the tab towards downwards by 90° from the view shown.
The first symbol indicates the bend/inclination and the second symbol indicates the direction of bend than the angle of bend is given as 90°.
-----Knowledge is To Share, Not To Conserve-----
RE: symbol identification question, one more
RE: symbol identification question, one more
I don't have any idea on which standard they have followed in the attached drawing. My guess, it may be EN standard.
If you want to check out all standards of EN, please check this link.
http://en.wikipedia.org/wiki/List_of_EN_standards
-----Knowledge is To Share, Not To Conserve-----
RE: symbol identification question, one more
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: symbol identification question, one more
From what I can tell, that appears to be an ISO GPS symbol.
Michael Liu
ASME GDTP S-0470
RE: symbol identification question, one more
the part after its made.
ISO...well...each drawing is more of a communication of the engineer's idea...rather than a legal document.
RE: symbol identification question, one more
RE: symbol identification question, one more
This is the same standard as parts made by injection molding, or by 3D printing.
The ASME philosophy of tolerancing is based more on the function of the part than describing how the part is made or even measured.
Experienced GD&T professionals would be able to give you an idea of the magnitudes of the controls recocile with the plants ability to launch parts...but the entire tolerance syntax should come from the function of the part...rather than how each of the parts are made.
This is part of a philosophy of engineering towards a final assembly instead of engineering to a bunch of individual parts.
RE: symbol identification question, one more
Y14.5 only deals with parts in a single state, while this symbol is for converting a part in one state to a different state.
RE: symbol identification question, one more
RE: symbol identification question, one more
Minor point, but the preferred ASME spec for dimensioning and tolerancing injection molded parts is ASME Y14.8 (the latest version. Older versions were directed at cast and forged parts only).
Tunalover