3-First Protoytpe

In the first prototype, we decided to first test the feasibility of our idea. We decided to build only one level instead of three of them.

To convert the rotary motion of the lead screw into the linear motion of levels, we decided to incorporate sliding joint at the four corners. We built our assembly first in Solidworks to finalize the design parameters and object dimensions.

The First Prototype: Solidworks Model

After finalizing the design, we decided to have wood as the base material for the model. We 3D printed our slider joints and connectors.

The lead screw was manufactured using lathe. We thought of reducing our effort and decided to use the final dimensions of the model for manufacturing the the lead screw.

We used laser cutter to cut out the wooden blocks. It was a lot of learning, but it was really fun! Once the assembly was done, the motor was able to lift the level proving our concept feasible.

Actual Prototype

But while making our prototype, we realized some shortcomings in the design based on the system properties and the machinability of parts.

The 3D printed slider joints provide too much friction. They have to be really accurately designed and printed to have a smooth functioning.
Too many 3D-printed parts make the manufacturing time quite long.
Thin pieces of wood are easily deformable and then create inaccuracy and assembly problems.