LEGO construction for controlling linear and rotary movements

[andreasbaumgart]

A construction for controlling linear and rotary movements.
I saw it in a mechanical engineering video by Nguyen Duc Thang ( https://youtu.be/gU0wqocH7tQ ) and realised it with LEGO.

 

 

[Andy D]

This is very interesting. I keep coming back to it, and I have also looked at the reference video as well as other videos by the same person.

i think I am going to build something like this.

Thanks for posting this.  BTW did you make a follow-up video?

Andy D

[andreasbaumgart]

Hi ! I haven't made a follow-up video. Maybe it is an idea for next the next time.
I have also begun to realize its designs with LEGO.
I've released a few in my YoutTube channel:

Andreas

[Tommy Styrvoky]

I think it would be possible to connect both outputs to a simple gearbox, then you could either have both axles rotating in one direction, or opposite, to allow for solely linear motion and rotational motion. As unless you plan to use an EV3 or mindstorms motor to control it, there will be differences in rotational speeds in PF motors, and the gearbox fixes that.

[Andy D]

4 hours ago, Tommy Styrvoky said:

I think it would be possible to connect both outputs to a simple gearbox, then you could either have both axles rotating in one direction, or opposite, to allow for solely linear motion and rotational motion. As unless you plan to use an EV3 or mindstorms motor to control it, there will be differences in rotational speeds in PF motors, and the gearbox fixes that.

That sounds very interesting, a good chance to practice gearbox skills.  I really need to work on that!

 

@andreasbaumgart I was thinking of your number 3 of 12 video ... Controlling linear mvemments... part 2.

My interest is peaked because I think I could modify this to be a GoPro slider.

Andy D

Edited February 18, 2017 by Andy D

[Kristof]

Cool contraption. I would like to see this working with something more substantial than 20t gear and just and indicator for turning. Though this is probably limited in size either by drive axle lenght or by ists possible twist when it gets longer... pethaps someone can think of a bracing for these 'screws' so these wont have a tendency to slip or bend out of place.