Datums call out @ part center is correct?
Datums call out @ part center is correct?
(OP)
Please see attached image. Can i use part center to call out datums?
Please help me to understand, why i can use it.
Thanks,
Darsh
Please help me to understand, why i can use it.
Thanks,
Darsh





RE: Datums call out @ part center is correct?
Chris, CSWA
SolidWorks 14
ctopher's home
SolidWorks Legion
RE: Datums call out @ part center is correct?
Yes you can have a datum derived from some defined feature (such as part overall dimension) which is effectively the center plane of that feature.
thread1103-292841: Centerlines as Datums and plenty of others http://www.eng-tips.com/search.cfm?pid=1103&ac... touch on this.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Datums call out @ part center is correct?
RE: Datums call out @ part center is correct?
RE: Datums call out @ part center is correct?
RE: Datums call out @ part center is correct?
No, you can't use a part centerline to define a datum as shown in your examples. The datum feature symbol must be associated with a particular feature, or features.
Evan Janeshewski
Axymetrix Quality Engineering Inc.
www.axymetrix.ca
RE: Datums call out @ part center is correct?
The first response in the thread I linked had this illustration: http://files.engineering.com/getfile.aspx?folder=0...
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Datums call out @ part center is correct?
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
RE: Datums call out @ part center is correct?
Paul
RE: Datums call out @ part center is correct?
You sure will ask why I can't use the center line as a datum feature, here is the answer for you. Even ISO GPS not allow the datum symbol place on the center line on the new standard.
http://www.youtube.com/watch?v=xbA4FrZnZVM
From the point of view on datum point (0.0,0.0) on your last post, use the hole pattern as a datum feature is a good practice as mentioned by Paul.
Season
RE: Datums call out @ part center is correct?
RE: Datums call out @ part center is correct?
John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
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