Showroom 3DOF DC Brush motor actuators

Hi all !

Trying to build my first moving sim with resources and space i have

After a long readings and watching youtube i went from moving seat with wiper motors to some 3dof platform

I'm trying to build silent and smooth-moving thing, with not a lot of travel but with Heave.

Going actuator conception(not worm-geared)

Hope i'm on the right way

Also a haven't too much space for it, only 1 meter width and 2 meters of length

List of components:

1. Motors - DC brush motors Dunkermotoren 24v
2. Ballscrew 1605
3. PSU MeanWell 320W 18-24V one for each motor
4. IBT2 - 1 or 2 for each motor
5. Hall-type potentiometers

And also a lot of bolts, nuts, lasercut and wires )

So i'm started....

Two of three brothers are ready

Feedback potentiometer system must look weird, but it works

Interested to see how your project pans out. Some videos of your actuators in motion would be great to see

Of course i'll make a video, i'm very interested in it myself

But the actuators cannot work without seat platform - it will broke itself

Base is ready

Can you tell me the width of your base please ?

And what do you think about gas struts placing - like this:
:

Or like this:

I would place the strut as per your first photo, within the frame. That way all travel will be equal.

My 3dof frame is approx 1m wide

Keep going...

Take old trainer to build seatbase of it

Had to bought U-joints instead of bull-eye - to avoid rotating of ballscrew nut - success, it's stop rotating

Soldered new thick wires to motors

Installed u-joints on every corner, add length to rear beam (ab. 8 cm) to move COG a little backwards

I'm the worst welder in the world )))

I take it the pot will be attached to the wheel that travels up and down?

What is the torque and rpm of the motors?

Yes, you are right, it's already installed, but i removed them till i'm finish welding and cutting

Not the best decision, but i like it for hall sensor pots

0.6 nm, 2900 rpm

Is there a gearbox on them?

Do you know what output torque you achieve with the ball screws?

No any gearbox. There is a same amount of torque on the ballscrew shaft because its directly connected to the motor shaft. One motor installed on the corner lift me up with ease without gas strut and really quick. But real talk is what it will be with quick direction change. Let's wait for me to install electronics and start smc3

Looking forward to seeing a video of performance

Hope it will not fall apart after five minutes

I much more like the concept of linear potentiometer, maybe i will buy it for testing later, there are some on Ali

Could be a g

Could be a good idea, although a hall effect pot without any end stops would offer safety from breaking if over extending

This video is 2 days ago, ballscrew without any grease, acting only in up direction, falling down by gravity )

I'm 95 kg

Looks great, plenty fast enough