Question about dates on title block
Question about dates on title block
(OP)
Whats your practice in writing dates on the Engineering drawings.
I design & create drawings.
In general, I work on a design for 3 months & then create drawings.
What should the Drawn Date & Design Date recorded on the title block of the drawing.
I design & create drawings.
In general, I work on a design for 3 months & then create drawings.
What should the Drawn Date & Design Date recorded on the title block of the drawing.
~ BT





RE: Question about dates on title block
The "drawn date" should be the date when you add your name as "drawn by" and given out for fab, with a revision.
Chris
SolidWorks 09 SP4.1
ctopher's home
SolidWorks Legion
RE: Question about dates on title block
"Good to know you got shoes to wear when you find the floor." - Robert Hunter
RE: Question about dates on title block
I think our policy is the drawn date is the date when the drawer considers it finished, before any checking or minor changes from proto manufacture etc.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Question about dates on title block
I fill in the date at the moment I start my drawing. With 3D CAD like SolidWorks, filling in all the profile cards, immediately, is good practise.
RE: Question about dates on title block
This has an added benefit of making the design seem more "mature" before letting it out into the world to get beaten and bled on by machinists...
RE: Question about dates on title block
"Art without engineering is dreaming; Engineering without art is calculating."
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RE: Question about dates on title block
RE: Question about dates on title block
For revisions to the drawing, we left the date in the titleblock alone as that was a variable we named 'initial_release_date'. We used a 'modified_date' for the revision fields.
Signoffs where also entered by the PDM software from the workflow and new images generated when the signoffs were completed.
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli
RE: Question about dates on title block
Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion
&
RE: Question about dates on title block
However, we are still working in 2D, so we don't have separate models. We are "in process" of getting 3D software, in which case I would be tempted to use the "design date" for date the model was first created, and the "drawn date" as the date the drawing was started. However, we will likely use the same title block that does not have "design date" on it, so it wouldn't really apply for me anyways.
We also have a spot in the title block for checked by and date though. So it wouldn't make a lot of sense to have the date the drawing was handed over to checking in the "drawn date" if the checker was just going to put the date he receives it in in the checked date box anyways.
-- MechEng2005
RE: Question about dates on title block
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Question about dates on title block
Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion
&
RE: Question about dates on title block
Cheers
RE: Question about dates on title block
Your auditor may not know how to read drawings. In this, they may not have been qualified to make such a finding. It's a bit like a doctor in medicine looking at a painting by a famous artist and complaining that he cannot read every letter in the artist's signature.
Regardless, I understand where you are coming from. In the medical device field, a common solution is that the drawing is edited once it is released to include a watermark or header that declares effectivity. That word Effectivity is the key. It doesn't matter what other dates are on the drawing (drawn date, rev date, approval dates). Effectivity is the day that the change went into effect. This can be edited on the neutral format such as PDF or directly on the CAD drawing itself. It does not (and should not) be associated with other dates on the drawing. This is just what I can offer you and the OP from my experience.
Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion
&
RE: Question about dates on title block
I've been on the receiving end of Auditors that didn't know anything about what they were auditing picking out exceptions based on irrelevant misunderstandings. It's one of the reasons I have a low opinion of the typical ISO quality implementation.
If the parts aren't fully interchangeable there should probably have been a change in part number per ASME Y14.100 - it isn't a rev date issue. Though I agree that for fairly obvious reasons this sometimes gets played fast and loose with during development.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Question about dates on title block
Your PDM system should log release dates.
If your drawings are dated on the day the designer initiated them, then all the fabrication dates will be later.
On our drawings, we have boxes for Checked and Approved. I would think that the Approved date would be your release date.
As the designer, I issue preliminary drawings. Typically, these are labeled "PRELIMINARY" and dated. I am telling everyone "Here is what I intend to do. What do you think?". My co-workers, and sometimes customers, get to think about it and comment, before the actual hardware is built.