vespaman
Guest
Bye to all,
I would like to make in caia assembly a skel model of cardanic joint. the system consists of 3 parts:
- input tree
- cruise
- exit tree
all 3 are schematized with simple lines as in the attached image, as it is a skel model.
I impose the bonds of coincidence of the 4 points of the cruise, that is:
- 2 point-point coincidence bonds between cruise and input shaft
- 2 point-point coincidence bonds between cruise and exit shaft
Then I put a rotation bond of the input shaft compared to a fixed reference and I go to measure the rotation of the output shaft compared to a fixed reference.
everything " seems" to work, the problem is that by changing the entrance angle sometimes it happens that the cruise reverses its orientation (see image). imposing a rotation of 90° from 1 to 2, I expect that the system "ruoti" consequently, while instead the cruise is reversed of 180° (see image).
the problem originates because when there is an angle bond (e.g. two perpendicular lines between them), the solutions are always two (an angle and its additional). Does anyone have any idea how to impose that orientation remains correct? ? ?
I tried them all a bit, but I just don't go out. .
I would like to make in caia assembly a skel model of cardanic joint. the system consists of 3 parts:
- input tree
- cruise
- exit tree
all 3 are schematized with simple lines as in the attached image, as it is a skel model.
I impose the bonds of coincidence of the 4 points of the cruise, that is:
- 2 point-point coincidence bonds between cruise and input shaft
- 2 point-point coincidence bonds between cruise and exit shaft
Then I put a rotation bond of the input shaft compared to a fixed reference and I go to measure the rotation of the output shaft compared to a fixed reference.
everything " seems" to work, the problem is that by changing the entrance angle sometimes it happens that the cruise reverses its orientation (see image). imposing a rotation of 90° from 1 to 2, I expect that the system "ruoti" consequently, while instead the cruise is reversed of 180° (see image).
the problem originates because when there is an angle bond (e.g. two perpendicular lines between them), the solutions are always two (an angle and its additional). Does anyone have any idea how to impose that orientation remains correct? ? ?
I tried them all a bit, but I just don't go out. .