basic questions about alignement

[Mranaskw]

hello everyone

4 question came across my mind when i was having a self brainstorm , and i would appreciate your kind answers even tho how silly they look , I'm a newbie and still on training and just don't like to ask the expert too much cuz i feel like a pain in the a**, i rather look up myself

1 - when aligning a part in iterative is it necessary to cover it all (taking the 6 points around it all ) not in just a particular area
2 - is it necessarily to have the the rotations and origin to perpendicular to the plane and why , and how to know if they are 90° or not
3- i understand that the datum A is plane B is line and C is Point am i correct , and true position is the location of a feature in the dimensional space in relation to those origins
4- why to level if we can select Z for example as origin Z

my kind salutations to all the effort being made in the forum , thank you guys

[russd]

This is a much bigger question than you realize. My suggestion is to start by using what Hex teaches by using a Datum Precedence Table as the alignment may not always be plane, line & point. Also, this is a tool to start teaching the basic principle of constraining 6 degrees of freedom. I have a training book from a local college and they spend the first course learning features and multiple alignment senarios. PM and I might be able to point you to some resources.
Blank Datum Precedence Table.JPG

[A-machine-insp]

When I started I used this for a good month until I understood it. It's second nature to me now but it's a very good tool to have for new people.

[Ajesh George]

russd , would you mind - to point out the resources which told you had.
I'm go training not from Hex but from my collogue who was not fully aware about DOF , It would be helpful to check and verify the method I have been using is correct / not according to PCDMIS.

[bherrin]

Though i fully endorse finding information on your own, if there is an expert available to train you, be a pain in the a**, its their job. If you are not fully understanding a topic, then they are not doing their job.