symbol identification question, one more 1

[bxbzq]

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.

 

[Mekada]

According to solidworks, this is called "Inclinaison" (french). This would translate as incline, tilt, or angle. From your drawing, I would say you need to bend the tab of material 90 degrees.

 

[Rj87]

bxbzq,

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-----

 

[bxbzq]

any standard available, ASME, ISO?

 

[Rj87]

In both ISO and ASME standards, usually bend direction(Up/Down) & angle will be mentioned above or below the bend line using a note.

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-----

 

[ewh]

Which ASME standard? I'm curious as I've never come across this symbol before.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

[Michael854]

That's not an ASME symbol.

From what I can tell, that appears to be an ISO GPS symbol.

Michael Liu
ASME GDTP S-0470

 

[Michael854]

ASME drawings tend to avoid describing bend angles...or other descriptions of how parts are made. ASME philosophy is to only describe the legal dimensioning of
the part after its made.

ISO...well...each drawing is more of a communication of the engineer's idea...rather than a legal document.

 

[CheckerHater]

Is there any ASME standard dedicated to sheet metal parts?

 

[Michael854]

The ASME standard for dimensioning and tolerancing parts made from sheet metal is ASME Y14.5
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.

 

[3DDave]

The symbol is a manufacturing process symbol. While the part is flat, one cannot verify the bend angle; when the part is bent the flat pattern can't be confirmed. Since metal stretches and compresses during the forming process there isn't a 1:1 correspondence between the geometry of the two that doesn't include strain calculations.

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.

 

[CheckerHater]

Michael, when it comes to injection molding, ASME Y14.8 applies as well. So, I was hoping you discovered Sheet metal dimensioning and tolerancing book.

 

[Tunalover]

Michael854-
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