rotation axis determination

[sguguretto]

Dear users, I am faced with this problem.

I have two rotated positions of the same surface, that is, one is the starting surface that has undergone a rotation in the space around a board.

I would like to know if there is any way to determine which axis around which it rotates.

thanks to all

 

[pivello]

hi, sorry but if you have already rotated it means that you implicitly chose a rotation axis. ...you can never change color name and thickness if you want to distinguish it from others

 

[sguguretto]

hi, sorry but if you have already rotated it means that you implicitly chose a rotation axis. ...you can never change color name and thickness if you want to distinguish it from others

no, I was passed the file so, I did not rotate and in the tree there is no reference to it because probably after they isolated.

 

[pivello]

then do a sketch and project the same edge of both surfaces then join with a segment the extreme point one with extreme point 1 rotated and find the middle point and then perpendicular line from the middle point. do so also with the second extreme of the original projection and second extreme of that rotate the straight on the middle point and where you cross you have the center of rotation

 

[Fulvio Romano]

I already wrote it somewhere else, and it's the same as the previous post.

choose two body points in basic position, say a and b. the rotated body will have the same points a' and b'. the rotation center is the intersection of axis of segments aa' and b'b'.