24-262 Stress Analysis – 2012 Design Project

Group 7:

Zachary Medeiros

Jay Kuvelker

Zachary Furman

How our mechanism works:

Our lifter is made up of a support that rises up directly from the clamp

base and a rigid i-beam that spans from the base, through the right hole,

to right near the target weight. At the end of the i-beam a 72 oz-in torque

servo is attached. To the servo is attached a rod with a counter-weight on

one end and a notch on the other. The counter-weight serves to aid the

servo in the lifting of the notch. The notch hooks on to the target weight

and is able to lift it just over 2 inches.

Interesting and original features:

-Access through smaller window

-Direct path from base to weight

-Base is a stable central supporting beam instead of a box

-One main i-beam instead of a truss structure

-Simplistic design

-16-oz weight

Theoretical Predictions:

Percent of servo torque used: 70.83%

Theoretical lift: 4.23 in.