Dude for real. I learn so much faster by visual stuff. I like how everything is colored and sized nicely too. The more ways to recognize information the better.
@@JB-ri6zp Yeah, it also shows they take pride in their work. I recommend checking out Tarkka Design channel for same level of quality (different topic thought)
I think of the following guidelines while deciding the precedence within the three selected datums. 1. The capability of DEFINING the position. ( A plane flat surface is just incapable, while as, any central axis can do it nicely) 2. The sequential contact with the concerned datum simulators. 3. The ability to restrict maximum degrees of freedoms, with due consideration for the sequential contact. 4. The friendliness to functions like assembly, production, inspection, toolings etc. As per these guidelines, at your second illustration, the OD seems to be the better and proper choice to be the primary datum. Your comments please.
Thanks for your comment! To clarify, the datum precedence when setting up for inspection MUST come directly from the feature control frame on the drawing. Thus the primary locks in all of the allowable degrees of freedom with the secondary and tertiary locking in the remaining sequentially. The ASME Y14.5 Standard specifically states that selection (when designing) of these datums should mimic the assembly requirements. That should be your first goal when applying GD&T to a feature as a designer/drafter. However, occasionally the assembly requirements can be trumped by ease of inspection or set up.
Understanding GD&T is a great tool to keep in the toolbox and will set anyone apart when manufacturing quality parts that meet tolerances and assembly requirements for any industry. www.gdandtbasics.com/
That's a great idea. Movable datum targets are a very complex topics - we cover this in our advanced course. However, if you're interested in datum targets, here's some more information: www.gdandtbasics.com/datum-target/ Hope this helps
Can u show me an application where the primary datum is given a cylindricity tolerance? I searched google and even i searched the standard but in vain.
This is a good idea, and we will keep it in mind for future videos. Keep in mind that cylindricity is a form control (cylindricity article: www.gdandtbasics.com/cylindricity) , and that any size controls on that feature will also control its cylindricity to a certain extent via Rule #1. (www.gdandtbasics.com/gdt-rule-1) We offer great options for GD&T training. Both live instructor led and self paced options if you are looking to further your GD&T knowledge. Don't hesitate to reach out if you are interested!
Sorry to hear this. Check out the article that we wrote to go along with this video - might help! www.gdandtbasics.com/datum-reference-frame/ Or our symbols page to help when you need a reference: www.gdandtbasics.com/gdt-symbols/
Really appreciate the effort it took to make those animations and graphics!
Kind of funny I'm learning this though. No CMM where I work!
Glad you enjoyed it! thank you for your kind words!
Great job on using pleasant HQ looking graphics.
Thanks!
Dude for real. I learn so much faster by visual stuff. I like how everything is colored and sized nicely too. The more ways to recognize information the better.
@@JB-ri6zp Yeah, it also shows they take pride in their work. I recommend checking out Tarkka Design channel for same level of quality (different topic thought)
I think of the following guidelines while deciding the precedence within the three selected datums.
1. The capability of DEFINING the position. ( A plane flat surface is just incapable, while as, any central axis can do it nicely)
2. The sequential contact with the concerned datum simulators.
3. The ability to restrict maximum degrees of freedoms, with due consideration for the sequential contact.
4. The friendliness to functions like assembly, production, inspection, toolings etc.
As per these guidelines, at your second illustration, the OD seems to be the better and proper choice to be the primary datum.
Your comments please.
Thanks for your comment! To clarify, the datum precedence when setting up for inspection MUST come directly from the feature control frame on the drawing. Thus the primary locks in all of the allowable degrees of freedom with the secondary and tertiary locking in the remaining sequentially.
The ASME Y14.5 Standard specifically states that selection (when designing) of these datums should mimic the assembly requirements. That should be your first goal when applying GD&T to a feature as a designer/drafter. However, occasionally the assembly requirements can be trumped by ease of inspection or set up.
👍👍🙏 thank you so much
Welcome 😊
Are we to consider two perpendicular planes passing thru the axis if the primary datum is controlled by cylindricity?
If your Primary Datum is created using a cylindrical feature, the datum itself is an axis.
Thanks a lot
Happy to help
Im never going to make it in this industry. Is this for programming? I just want to set up the mill and GO!
Understanding GD&T is a great tool to keep in the toolbox and will set anyone apart when manufacturing quality parts that meet tolerances and assembly requirements for any industry. www.gdandtbasics.com/
Can you pl show me examples of movable datum targets as well as translation modifiers on datums.
That's a great idea. Movable datum targets are a very complex topics - we cover this in our advanced course. However, if you're interested in datum targets, here's some more information: www.gdandtbasics.com/datum-target/
Hope this helps
Can u show me an application where the primary datum is given a cylindricity tolerance? I searched google and even i searched the standard but in vain.
This is a good idea, and we will keep it in mind for future videos. Keep in mind that cylindricity is a form control (cylindricity article: www.gdandtbasics.com/cylindricity) , and that any size controls on that feature will also control its cylindricity to a certain extent via Rule #1. (www.gdandtbasics.com/gdt-rule-1)
We offer great options for GD&T training. Both live instructor led and self paced options if you are looking to further your GD&T knowledge. Don't hesitate to reach out if you are interested!
I LOATHE Datums! Just give me a tolerance! I dont get it! :(
Sorry to hear this. Check out the article that we wrote to go along with this video - might help!
www.gdandtbasics.com/datum-reference-frame/
Or our symbols page to help when you need a reference:
www.gdandtbasics.com/gdt-symbols/