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What does this mean?
3

What does this mean?

What does this mean?

(OP)
see attachment.

RE: What does this mean?

(OP)
Yes the callout in red.

It looks similar to a weld symbol but that makes no sense in this instance.

RE: What does this mean?

Maybe it's the contrast on my monitor, but I can hardly make it out.  I'd almost guess chamfer based on what I can see.  Someone more familiar with ISO/DIN std's may do better.

I'm pretty sure I've seen similar before but can't recall the details.

Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?

RE: What does this mean?

It is explained in ISO 13715:2000 an international standard for defining "Edges of workpices"

Since it is a published standard I cannot post its contents.

Paul

RE: What does this mean?

Paul,
Do you work with many ISO standards?

RE: What does this mean?

I am familiar with some... work with them?... occasionally to interpret "decode" as Bill Tandler says.    

RE: What does this mean?

Oh and I should have said "Edges of Undefined Shape" rather than "Edges of Workpieces" possibly just a Ford-speak.

RE: What does this mean?

(OP)
Paul,

I think I'm clear it is to do with the edges,
but what does it specify?  rounds? chamfer, burrs?

RE: What does this mean?

It specifies that a raised edge of up to .1 is allowable.

RE: What does this mean?

(OP)
Thanks Dennis!

RE: What does this mean?

2
The plus figure is a permissible burr and the minus figure is a permissible rolled edge as you typically get with stamped/ blanked parts.

RE: What does this mean?

Since it is on the vertical portion of the corner then the permitted raised edge may extend 0.1 past the horizontal part boundary... there should be no extension past the vertically shown boundary.

If the spec was in the corner of the symbol the permissable burr direction woud be unspecified.

Paul

RE: What does this mean?

Ryandias - DIN 6784

Symbol   Outside corner       Inside corner
--------------------------------------------------
+        burr                  transition
-        free of burr          removal (metal)
+/-      burr or burr free     transition or removal

In your case (marked in red)= outside corner burr up to 0.1
The upper -0.1/-0.3 calls for no burr from 0.1 to 0.3. Removal (metal) is your choice.

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