"CL" Symbol Manditory?
"CL" Symbol Manditory?
(OP)
We are having some drawings kicked-back by QA due to not having the CL symbol to define a centerline in a cylindrical part drawing.
I looked in Y14.5M-1994, thinking that one of the Fundamental Rules stated you didn't need it, but couldn't find it. Can anyone help?
I looked in Y14.5M-1994, thinking that one of the Fundamental Rules stated you didn't need it, but couldn't find it. Can anyone help?
"Art without engineering is dreaming; Engineering without art is calculating."
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RE: "CL" Symbol Manditory?
Powerhound, GDTP T-0419
Production Supervisor
Inventor 2008
Mastercam X2
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: "CL" Symbol Manditory?
Any references for the -1994 edition?
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: "CL" Symbol Manditory?
Powerhound, GDTP T-0419
Production Supervisor
Inventor 2008
Mastercam X2
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: "CL" Symbol Manditory?
RE: "CL" Symbol Manditory?
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: "CL" Symbol Manditory?
The place for it would be ASME Y14.2M, as powerhouse just checked. There was a chance ASME Y14.100 might say something, but it doesn't say anything about this there either.
No examples in any of the standards I have access to show a CL. This makes sense since a centerline is self-explanatory. If it is drawn as a centerline, that's what it is. It doesn't need any further identifiers.
If one doest want to use it to signify the center of the part, I guess one CAN use it, but as far as I can find, there are no standards that even define what it means, so there's really not point anyway; unless you put a note on the drawing stating its definition.
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: "CL" Symbol Manditory?
RE: "CL" Symbol Manditory?
Chris
SolidWorks/PDMWorks 08 3.1
AutoCAD 06/08
ctopher's home (updated 10-07-07)
RE: "CL" Symbol Manditory?
The closest that Y14.5M comes to mentioning use of center of an object is symmetrical outline. But it shows methods from Y14.2M, and not CL for this sort of detailing.
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: "CL" Symbol Manditory?
RE: "CL" Symbol Manditory?
KENAT, probably the least qualified checker you'll ever meet...
RE: "CL" Symbol Manditory?
I have seen it used to specify a particular centerline with a note indicating of what it is the centerline. For a general cylinder, I see no reason for it.
Believe it if you need it or leave it if you dare. - Robert Hunter
RE: "CL" Symbol Manditory?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: "CL" Symbol Manditory?
Failure is a prerequisite of successful design
RE: "CL" Symbol Manditory?
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: "CL" Symbol Manditory?
The SYMMETRICAL OUTLINE SYMBOL is used when limited drawing space and only one-half of the symmetrical shape can be shown (Previous symbol was CL prior to 1986) See 5.6.6 DOD-STD-100 / DOD-D-1000 Drawing Requirements Manual.
RE: "CL" Symbol Manditory?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: "CL" Symbol Manditory?
I might rarely use CL in a removed view on another sheet, when showing dimensions off a centerline of a datum feature by attaching a leader and note to the centerline that states "CL OF DATUM B". Even then, only is it is not obvious.
RE: "CL" Symbol Manditory?
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: "CL" Symbol Manditory?
Even so, I can't imagine it is mandatory in any case. I would worry about an organization where it would be that necessary.