simulation in mechanism of a screw and nail

[makeng]

Good morning to all
I have a problem that I can't distract: I must simulate the advancement of an axis snail to a screw (of the type recirculation of spheres to mean us). imposed as read in another discussion a pinion and racket but in the end the system accepts nothing "the axis of the rack is not an orthogonal traslation axis of the pinion". and I get it! My problem is to have a rotation axis in axis with that of translation. Can you please help me?
Thank you.
:smile:

 

[DANI-3D]

Did you see this discussion?http://www.cad3d.it/forum1/showthread.php?t=17551&highlight=chiocciolathere are files that perfectly simulate operation

 

[makeng]

everything ok. I didn't set well the constraints of .adesso mechanism works everything that is a wonder.
Thank you.