I come across this almost daily in our R&D group. My coworkers like to overthink and they want to establish definitive manufacturing processes on the drawings.
Then theres's the other group who can't comprehend modern machining techniques and are stuck with 2-axis turning and 3-axis milling.
It...
It's not related to the original topic, but if the drawing is in millimeters, the decimal places must be preceded by "0".
On mm drawings, there is no .25, .1 etc. It's always 0.25, 0.1...
Don't mix inch and metric. It looks confusing and ugly.
Sorry, couldn't upload as image because of security measures somehow.
Title block FCF means all over. It's more than enough most of the time. What you must control directly, is already dimensioned accordingly. Hopefully...
It is nonmandatory that every company must conform to any particular standard system.
Maybe they "upgraded" the origin symbol because it felt convenient. I always say, ask the one who's signature is in the title block.
We have a CAD licenses page that shows the number of used and available ones.
We can send a mail to all the license users to release if we need it. We also release the license when we're finished. SPA, ST1, SMD, STX, these are the most used ones in the CAD team, and they are scarce.
Sheetmetal...
Use LMC if you care about wall thickness.
If I were you I'd design a gauge for this requirement. No tricks needed in measurement.
This orientation is not caliper friendly either.
Your company made a document that is your guide.
Your company chose Y14.5 as the standard for dimensioning and tolerancing.
Your company probably has additional confidential contained in this document, therefore it's protected.
Your company requires contractors to follow the drawing...
2018 says this:
Also in chapter 4:
Some examples. Even if you don't put basic dims and fcfs on, you have to follow Y14.5. Therefore displaying the used standard is necessary for people outside your company who encounter your drawing somehow.
People tend to forget about the "Dimensioning"...
My number one is the "Switch dwg. link" macro. Many times the Edit-Links replace linked body gets me the usual "refuesd the document" error. We have a macro that switches the linked body, updates all the unlocked views and makes a new dwg. Good for carryover work.
Number two is the workbench...
Don't overthink this. If you have the freedom, start one path then you'll experience it. When I started my Catia journey after 5 years of Inventor I kept my methods and style while doing the CAD stuff. Not knowing that Catia's strength lies in multibody and surface approach.
My co-worker showed...
Datum plane A does not pass through the sphere center. It is offset by how much is the "flattened" part.
Datum plane C is correct.
What makes sense to me is the center hole as Datum B, then position the 4X hole pattern to A|B|C.
Yes, you're right. 509 isn't for threads, but I said, you can take inspiration from it.
When I have to design undercuts I mostly take hint from DIN 509 Type E undercuts and I change my geometry according to the requirement.
Here you go. I use these for threads too, you can always take inspiration.https://files.engineering.com/getfile.aspx?folder=23eb430e-8f0a-424c-a112-551a0d13bcd9&file=DIN_509_alaszurasok.pdf
I see no reason in having a different document that contains revision information where a revision block will fit almost all drawings.
This is how we do ours. 3D, 2D is in PLM, info is on the drawing.
Most developed firms use some kind of PLM software for data management. We use Siemens...
