Parts List and Drawing are independently revisable documents. That is, the
PL can advance without forcing a drawing change unless it influences the
graphics or notes.
In our Space business, assemblies are identified by the PL number and there
may be several different assemblies (variations) of a base part number being
built. The PL number and revision letter defines the assembly. Each PL is
uniquely identified by a different "dash" number but all refer to the same
drawing (base number). Being able to revise any one of the assemblies
(defined by the PL number) independently without affecting the others is
highly desirable. This is how we do it. This is basically how the CM
control has to be structured for all our Mil-=Spec work. We only
change/revise a document if there is actually a change on it; not to keep up
with PL changes. The cost of documentation change and control is high
enough without forcing needless revisions.
Your scenario (Rev: B) & (Rev C) are correct.
If you decide to make a new variation, then a new PN 1234567-2 would be
released at Rev. A, not at Rev. C
> Rainer G. Blomberg
> Staff Production Engineer
> Space Systems - Clearwater
> Honeywell International, Inc.
> * Phone (727) 539-5534
> * Fax (727) 539-4469
> * Email [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Michael Kuczynski
Sent: Friday, October 07, 2005 12:19 PM
To: [log in to unmask]
Subject: [TN] Assembly Documentation Question
The company I work for is going thru some documentation change discussions.
Below are the documents that are revisable. (The parts list contains all the
IC's, cap, res. etc. and documents.) The feedback I'm getting is the the
parts list and the assembly drawing should ALWAYS be the same revision
(becasue thats the way its always been).
Everywhere I've every worked, these are independent documents.
Here are my scenerio case: (All documentation released at Rev. A)
Scenerio (Rev: B): A part number change, of a 1K, 5% resistor to a 1K, 1%
resistor.
In this case, the part list and schematic would change, but it has no effect
on the assembly (because no part number or value is on the assembly
drawing).
PL1234567-1 Rev: B Parts List
AW1234567 Rev: A Assy Dwg
DS1234567 Rev: A Drill Dwg
PC1234567 Rev: A Artwork
PA1234567 Rev: B Schematic
Scenerio (Rev: C): The length of the screw holding the stiffener bar is
changed from 3/8 in. to 1/2 in.
The change is to the parts list only, the assembly drawing stays the same.
(no 3D view or side view)
PL1234567-1 Rev: C Parts List
AW1234567 Rev: A Assy Dwg
DS1234567 Rev: A Drill Dwg
PC1234567 Rev: A Artwork
PA1234567 Rev: B Schematic
The current discussion and question is;
-Can the parts list be independently revisible, from the assembly drawing?
-What do most of the assembly houses usually like?
Thanks for any response to this question.
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet
NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send
e-mail to [log in to unmask]: SET Technet Digest Search the archives of
previous posts at: http://listserv.ipc.org/archives Please visit IPC web
site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
[log in to unmask]
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
