How is the lifting table mechanism arranged?

Question

Do it yourself

Hello

I would like to calculate the cost of materials for the lifting table mechanism (computer table with a variable table top height) based on an electric motor. As I

understand it, there are two approaches:
- the use of one electric motor installed on one of the two table legs, the transmission of torque to the second leg is carried out through the cardan
- the use of two electric motors, for each leg, synchronized by the controller

leg?
Perhaps there is a rack and pinion mechanism installed there?
How is it done in the tables that are sold in stores?

example:

Answer 1

google LINAK
there is usually hydraulics,
although xs what
else can it be, but it certainly doesn’t
look like a rail, it’s a regular thread or whatever it’s called

Answer 2

Just a screw with a nut.
The nut in the down tube is fixed, the screw in the bearing in the top tube.
The motor turns the screw - the nut goes back and forth - the telescopic tube lengthens / shortens.

Answer 3

Thanks to dimonchik2013 and lonelymyp
For those who will ask the same question:
Link to the principle of operation of a linear actuator

Answer 4

https://www.youtube.com/watch?v=ui9ysjCUMdw
https://www.youtube.com/watch?v=y_4Spm2d_14
https://www.youtube.com/watch?v=rj-g2qHkjvE
https:/ /www.youtube.com/watch?v=iBGu_XkZYkU
https://www.youtube.com/watch?v=6gVdqL2XhaQ
https://www.youtube.com/watch?v=cJIUVR_I7Z8

Answer 5

It seems to me that making such a table with a lifting mechanism would be too dreary and "collective farm" at the exit. My son has been working standing up for more than three years now, and we just ordered a wide loft-style solid wood table with a leg height of 100 cm. This is enough to put another keyboard and mouse organizer and work in a standing position without numbing hands. Try searching online furniture stores for similar tables. Right now, there are a lot of New Year's promotions, you can easily snatch furniture at a nice price :)