Episode 442: Make Your Own Giant Servo

Thank you. I will need to build one but that idea should work perfect. I will return here once completed to share the results.

"...was hoping to have this procedure a little more electric."

The crank rocker mechanism suggested before could be powered by an electric motor.

Sorry for asking as I mentioned before that I am not familiar with all this but from searching how these parts work and go together, it seems to me that they mostly rely on the work of an air compressor. I do not have access to one and was hoping to have this procedure a little more electric.

The speed of rotation of the driving motor will adjust the speed of the oscillation. So use a motor speed controller or gearbox.

"...Do these things have proper names so I may find them a bit easier?..."

double-acting pneumatic cylinder

https://uk.farnell.com/w/c/automation-process-control/pneumatics/cylinders-actuators/prl/results?action=double-acting&so…

3/2 way solenoid valve

https://uk.farnell.com/c/automation-process-control/pneumatics/solenoid-valves?valve-function=3-2-way-closed

Thank you. I will consider this. if I can find one with adjustable speed then it may just work perfectly.

Sorry for the delayed response, busy weekend. I completely understand about charging any further on a design. I think I should be able to handle that. I just needed help with what mechanisms to use.

So a pneumatically driven crank mechanism, A double-acting pneumatic cylinder and a 3/2 way solenoid valve should be all I need to make this work then? Do these things have proper names so I may find them a bit easier? Cause just a quick search on those terms and nothing specific is showing up

Thanks for your responses! Give the mass of your object, the speed at which you need to move it up and down, and your budget, I think a pneumatically driven crank mechanism would be your best bet. A double-acting pneumatic cylinder and a 3/2 way solenoid valve would be the most cost effective way to create your motion.

Could I go into more depth about how to build this? Yes, but at this point I'm getting into the design-it-for-you stage, which is a professional service that I charge people for privately. I'm not available for this kind of work now or in the near future, but hopefully I've pointed you in the right direction to get started. Another member of the community may be able to help you more with your design goals.

"...Once I have it adjusted to the desired speed, I would like it to maintain speed through the entire process. So no it would not need to speed up or slow down at all or change direction.

So all it really needs to do is the same continuous motion..."

Sounds like a four-bar linkage (crank rocker) might provide a simple robust solution ?

Crank Rocker Four bar Mechanism - YouTube

So basically the object I need moved will continuously be moving up and down, bouncing pretty much like a bungy jumper. The lever arm does not have to be very long, I'd say a max of 6".

Weight would be a max of 7 lbs. but with the object bouncing, the force of it would add more weight so it needs to be able to hold that.

The rotation would not be a lot. if I was looking at a clock for example, the arm would have to be going back and forth between 1 o' clock and 5 o' clock. That part does not have to be exact. Give or take a half hour. haha.

As far as speed goes, I am not certain on how the speed could be measured but like i said previously, I need it to go down to 5 o' clock between 120 to 180 times a minute. I'd say a max of 300 times a minute. Since I am not 100% sure on that, is why I would need to be able to adjust the speed if needed. Once I have it adjusted to the desired speed, I would like it to maintain speed through the entire process. So no it would not need to speed up or slow down at all or change direction.

So all it really needs to do is the same continuous motion.

Lastly for budget, I would like to keep it under $50 but I am open if it requires more.

Thank you so much for this help.