thang010146 | Screw reverser 2 @thang010146 | Uploaded 3 weeks ago | Updated 3 days ago
Input: pink (or yellow) lever.
Output: remaining lever.
Transmission ratio between the coaxial input and output is -1 (rotating in opposite directions with the same velocity).
Max oscillating angle of this mechanism is 90 deg.
Larger angles are not suitable because the mechanism length would be too large.
The yellow screw of h2 lead is in mesh with internal thread of the blue nut-screw. The base having internal thread of h3 lead is in mesh with external thread of the blue nut-screw. h3 = 2.h2
The threads are right-handed.
In this video h2 = 48 mm, h3 = 96 mm. The screws and nuts threads have 12 starts.
The large leads are necessary to prevent jamming at the outer helical joints.
A pin fixed to the blue nut-screw slides along longitudinal groove in the pink lever hole.
In the third scene of the video, one fourth of some links are cut off for easy understanding.
This mechanism has not been tested in practice.
For calculation of this reverser refer to:
youtu.be/0P-ao2F3jvc
The mechanism in the video “Screw reverser 1”
youtu.be/nDQ4uf3U3v8
cannot operate because the lead angle of the thread on the base is not large enough.
STEP files of this video:
mediafire.com/file/vaxb1xoo86v9uc7/ScrewReverse2STEP.zip/file
Inventor files of this video:
mediafire.com/file/m93f5lgmpp1vc9d/ScrewReverse2Inv.zip/file
Input: pink (or yellow) lever.
Output: remaining lever.
Transmission ratio between the coaxial input and output is -1 (rotating in opposite directions with the same velocity).
Max oscillating angle of this mechanism is 90 deg.
Larger angles are not suitable because the mechanism length would be too large.
The yellow screw of h2 lead is in mesh with internal thread of the blue nut-screw. The base having internal thread of h3 lead is in mesh with external thread of the blue nut-screw. h3 = 2.h2
The threads are right-handed.
In this video h2 = 48 mm, h3 = 96 mm. The screws and nuts threads have 12 starts.
The large leads are necessary to prevent jamming at the outer helical joints.
A pin fixed to the blue nut-screw slides along longitudinal groove in the pink lever hole.
In the third scene of the video, one fourth of some links are cut off for easy understanding.
This mechanism has not been tested in practice.
For calculation of this reverser refer to:
youtu.be/0P-ao2F3jvc
The mechanism in the video “Screw reverser 1”
youtu.be/nDQ4uf3U3v8
cannot operate because the lead angle of the thread on the base is not large enough.
STEP files of this video:
mediafire.com/file/vaxb1xoo86v9uc7/ScrewReverse2STEP.zip/file
Inventor files of this video:
mediafire.com/file/m93f5lgmpp1vc9d/ScrewReverse2Inv.zip/file
