revision standards - change of a BOM that is not shown on a print
revision standards - change of a BOM that is not shown on a print
(OP)
We have a number of older assembly prints that do not list a BOM on the print (listing the BOM for ease of visibility is our current standard) but instead track the BOM in software unrelated to the CAD system. It is our understanding that if the BOM changes for an assembly, the revision of its controlling drawing should change even though the BOM is not listed on the drawing itself (the BOM change noted in the rev block). Is this thinking correct and if so / not can someone point me to the standard where it may be listed?
thanks
thanks





RE: revision standards - change of a BOM that is not shown on a print
ASME Y14.35M may have something as it is "Revision of Engineering Drawing And Associate Documents", ASME Y14.34M-1996 "Associated Lists" might have some guidance too.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: revision standards - change of a BOM that is not shown on a print
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: revision standards - change of a BOM that is not shown on a print
Otherwise, it's separate. Either way we don't show revs of each part on the BOM (unless it's configuration controlled by the customer).
Chris, CSWA
SolidWorks '15
SolidWorks Legion
RE: revision standards - change of a BOM that is not shown on a print
How are the approvals for the BOM changes managed; is this part of your MRP system? Our system requires documentation of approvals for changes indicating that they have been reviewed and approved by engineering and quality; this takes place via electronic signatures on prints. Short of a print change, there is no evidence of the change approval having taken place (via our system).
RE: revision standards - change of a BOM that is not shown on a print
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: revision standards - change of a BOM that is not shown on a print
Below are my two comments:
1. Definition of your current print is incomplete if you don't have a BOM for an assembly drawing;
2. You can't change the "BOM" if it does not exist in your drawing.
But you can do whatever you want to do since it appears that you do not follow any standards. I think it is mandatory to have a design BOM for an assembly. You can have a different manufacturing BOM, but the design BOM should be on the print.
For your revision, I think you need to do the followings:
1. Add missing BOM;
2. List actual changes to the BOM.
Best regards,
Alex
RE: revision standards - change of a BOM that is not shown on a print
It is not mandatory for this information to be on the assembly drawing itself.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: revision standards - change of a BOM that is not shown on a print
If you make a BOM of an assembly as a separate list, then the list is considered an associated document.
One can't change a BOM on a print document if the BOM does not reside on the print in the first place.
Best regards,
Alex
RE: revision standards - change of a BOM that is not shown on a print
You have the option to show the BOM on the drawing, or have it as a separate doc (PL or BOM).
Chris, CSWA
SolidWorks '15
SolidWorks Legion
RE: revision standards - change of a BOM that is not shown on a print
Figure 10 A is a separate parts list, figure 10 B is a print from 'Digital Data' i.e. ERP system.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: revision standards - change of a BOM that is not shown on a print
Best regards,
Alex
RE: revision standards - change of a BOM that is not shown on a print
I agree. I also misread your previous statement.
Chris, CSWA
SolidWorks '15
SolidWorks Legion
RE: revision standards - change of a BOM that is not shown on a print
Mike Halloran
Pembroke Pines, FL, USA
RE: revision standards - change of a BOM that is not shown on a print
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: revision standards - change of a BOM that is not shown on a print
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: revision standards - change of a BOM that is not shown on a print