Input: yellow shaft.
Pink tube has a prismatic joint with the input shaft, a helical joint with the grey base (the first screw-nut drive), a helical joint with green center screw (the second screw-nut drive) and a revolution joint with the orange tube. The latter has a prismatic joint with the base.
The green tube fixed to the center screw has a prismatic joint with the orange tube.
The first screw-nut drive is of right hand thread, L1 mm lead.
The second screw-nut drive is of left hand thread, L2 mm lead.
If the input shaft rotates N revolutions, the green slider performs a displacement of N*(L1+L2) mm.
This video was made based on US patent US8220349.
STEP files of this video:
www.mediafire.com/file/z51ejo...
Inventor files of this video:
www.mediafire.com/file/gofb5m...
8 сен 2021
