Problem Statement :
This design implements a lead screw to give a computer monitor a vertical degree of freedom. The lead screw is used to raise or lower the computer monitor manually to a desired height. The design can bolt to any surface the monitor needs to sit above.
Requirements :
The design must support the load of an average 27” computer monitor with a weight of 25lbs. The leadscrew will be 18” long. A safety factor of 2 was chosen to allow for the weight of wires hanging from the monitor and the vesa mounting bracket.
We chose to use McMaster-Carr part number: 99030A304. This Acme lead screw is made of 1018 Carbon Steal which has a coefficient of friction of 0.5 with other steal materials when clean and dry. This lead screw allowed us to have a ½” of adjustment per turn creating a very adjustable yet fast design. The lead screw is ½”-10. Giving us a ½” diameter and 10 threads per inch. The lead screw has a tensile strength of 64,000psi.
Thought Process :
I have always had an interest in computers, and everything that goes with them. This project wanted us to implement a lead screw into a design that both made sense and used it correctly. One problem I have always seen when at a desk or table, with the desktop monitor in front of me, is the height of the monitor is never correct. A height adjustable monitor that is quick and easy to adjust is crucial for maximum comfort. We feel as if this design conquers both the use of the lead screw and the issue we want to address.