I need to lift something 10” travel. For a simple illustration think of a coffee table that becomes a dining room table. The base can be up to 20”x20” and 16” tall. The weight is a few hundred TBD. I was thinking to use my typical Prop based main boards and brushless motors that I apply to various motion needs. In this case it’s a challenge.
I’ve built CNCs with linear rails and carriages. When carriages are spread out and you can have 2 per slide you can get a very rigid system. In this case I can fit 2 carriages back to back barely, not spread out at all With 4 rails vertically oriented in the base, at full height I’m not confident this will be super rigid.
I have used ball screws and nuts. In this case I have some ideas for 4- 3/4” ball screws in each corner doing the lifting. But again due to only having less than 16” height in a base to mount it all, I question if it will be stable. Meaning I don’t want to be able to push on this thing and have it move back and forth 1/4”.
I looked at various linear actuators and even if using 4, one in each corner I question the stability when fully extended. Also if using 4 separate linear motors will they be fairly synced.
What other options exists for a very robust lift that would not allow any bending or movement if pushed on? Meaning a tank.