Assembly Drawings - Arrow tip for part callout on the outline of part
Assembly Drawings - Arrow tip for part callout on the outline of part
(OP)
Hello,
The arrow tip for a part callout on an assembly drawing should be coincident with the outline of the part, correct? This is recommended over the arrow tip pointing to the surface of a part, correct? Reference attached example of both methods. Is this specified in the ASNI Y14.5M standard, if so where?
http:/ /files.eng ineering.c om/getfile .aspx?fold er=3d2c5c7 d-732e-4d8 5-b8c4-efe d35b03860& amp;file=E XAMPLE.PDF
Thanks,
renasis
The arrow tip for a part callout on an assembly drawing should be coincident with the outline of the part, correct? This is recommended over the arrow tip pointing to the surface of a part, correct? Reference attached example of both methods. Is this specified in the ASNI Y14.5M standard, if so where?
http:/
Thanks,
renasis





RE: Assembly Drawings - Arrow tip for part callout on the outline of part
Solid Edge V20
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
If putting a leader to a surface rather than outline our CAD defaults to a 'dot' instead of arrow and I've seen this elsewhere, not sure it's in an industry standard and I don't have any of them to hand.
Coverage of assy drawings really is pretty sparse in the asme stds. 14.24 covers them and there's another which covers parts lists as I recall but I can't think of the number. Even 14.100 has a few relevant things. However, there really isn't that much on assy drawings all things considered.
KENAT,
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RE: Assembly Drawings - Arrow tip for part callout on the outline of part
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
"...Normally a leader terminates in an arrowhead. However, where it is intended for a leader to refer to a surface by ending within the outline of that surface, the leader should terminate in a dot...
Marcelino Vigil
GDTP T-0377
CSWP
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
KENAT,
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RE: Assembly Drawings - Arrow tip for part callout on the outline of part
I think that this thread is getting off track. What I am trying to determine is what standard specifies that the tip of the arrowhead should touch the outline of the part in an "assembly" drawing? Perhaps there is no standard for this?
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
Good luck finding that in the standards though.
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
For instance, you have two parts which overlap in an assembly drawing. Lets say, a fan cover and a fan. The fan is drawn with hidden lines, while the cover is drawn with solid lines. If you were to use a leader that terminates with a dot(indicating surface) and that dot is coincident the fan and the fan cover, which part would you be referring to?
I would suspect the fan cover, but I could be wrong. If a leader arrow terminated on the outline of the fan cover and a leader arrow terminated on the hidden outline of the fan, there would be no ambiguity, as I see it.
So, my preference would be to use a leader with an arrow that terminates on the outline of the part, rather than using a leader with a dot that terminates somewhere on the part surface. However, I cannot find a standard to back up this claim. If anyone can find it, I would be interested in learning about it.
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
"Art without engineering is dreaming; Engineering without art is calculating."
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RE: Assembly Drawings - Arrow tip for part callout on the outline of part
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
KENAT,
Have you reminded yourself of FAQ731-376: Eng-Tips.com Forum Policies recently, or taken a look at posting policies: http://eng-tips.com/market.cfm?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
I believe my point/question keeps getting muddled with other arguments. My point, simply, is that it is better to have the part identification leader arrow point terminate on the outline of the part, rather than to have a dot on the surface of the part. I think there is less ambiguity when identifying the part this way.
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
KENAT,
Have you reminded yourself of FAQ731-376: Eng-Tips.com Forum Policies recently, or taken a look at posting policies: http://eng-tips.com/market.cfm?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
-- MechEng2005
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
Wow, and if what I just wrote wasn't muddy enough...
"Art without engineering is dreaming; Engineering without art is calculating."
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RE: Assembly Drawings - Arrow tip for part callout on the outline of part
This manual also says so... http://w
more... htt
Chris
SolidWorks 08, CATIA V5
ctopher's home (updated Aug 5, 2008)
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SolidWorks Legion
RE: Assembly Drawings - Arrow tip for part callout on the outline of part
So is there any spec on the use of squiggly lines?