Eliminating backlash in screw-nut drives 1
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- Опубликовано: 9 сен 2024
- Yellow collar and gray block have continuous V-thread.
When wear takes place in the pink lead screw, the collar always maintains pressure on threads thanks to the black circular spring that applies torque to the collar.
Contact occurs between the left side of the screw and the gray block and between the right side of the screw and the yellow block.
The video shows how the yellow collar and pink screw move under the influence of the spring.
The spring torque must be larger than the working torque applied to the the screw.
This video was made based on picture 4, page 1-49 of the book:
Illustrated Sourcebook of Mechanical Components
archive.org/de...
I think the behavior will be asymmetric. It will give good performance when rotating in one direction but may lock up when rotating in the opposite direction. ...I think. It would be interesting to build and test.
That is a really nice solution, the only thing is it's going to depend quite a bit on the amount of load on the screw.. could either end up in a situation where the backlash re-emerges or the spring is so loaded it causes significant friction. Either way, it is very neat.
The strength of the spring also plays a role.
Does this have any advantages or disadvantages over the common antibacklash lead screw nuts that have a compression spring between two notched nut halves that cant rotate relative to each other?
I don't know the design you refer to. Its picture?
Creative idea, but I think it is only applicable for axles that have little pressure on them
Wow how did you animate the spring in inventor like that?!
Here the spring consists of a curved part and a straight part.
The curved part is created using the Coil and Bend Part tools. It rotates together the yellow collar and is not deformed during the simulation.
The straight part is created using the Spring/Damper/Jack tool in Dynamic Simulation.
where did you do the animation/simulation
All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.
Chào bác: Bác có tài liệu hay đã làm video về hộp giảm tốc này chưa?
Hộp giảm tốc nào?
i think it would be really funny if you added some obnoxiously loud music to a video every so often. just as a little surprise
The music distracts the viewer from the technicality of the mechanics in the video.