How can i rotate ucs(coordinate system) in inventor similar mechanical?

please

2 Answers

use you view cube or the
YZ
XZ
XY
plans

I don't really understand the question what you are asking?
I don't know if this will help!!!

When making a part, the UCS depends on where the sketch is made. Normally, when making a part in Inventor, it is best to think about where your part is relative to the origin given. If your part is made directly on the origin, it should be centered correctly.

You can also rotate the view with the view cube like the other answer provided.

Hopefully this helps.