Stress Analysis Crane Project

24-262 Spring 2011
Professor Steif

Reyes Flete
Mechanical Engineering and Engineering Public Policy 2011
Carnegie Mellon University

Lauren Millistis
Mechanical Engineering and Computer Science 2013
Carnegie Mellon University

Jake Divone
Mechanical and Biomedical Engineering 2012
Carnegie Mellon University

Technical Objective

“The objective of this project is to design and build a mechanism that is powered by a standard servomotor which will lift a cylindrical weight. Your mechanism is to be clamped in a given position while the other end lifts a weight that slides along a vertical post. Between the clamping area for the base of your design and the post holding the weight sits an obstacle. The mechanism may not touch the obstacle or any other surface besides the base and the sliding weight. All teams must design and build such a mechanism with minimum capabilities: it must weigh no more than 20.0 oz, and it must lift the sliding weight by at least 2 inches.”

Materials

Item	Quantity	Description
.025” x .75” x 48” strip	5	3003 aluminum strip
.025” x .5” x 48” strip	2	3003 aluminum strip
.025” x .375” x 48” strip	2	3003 aluminum strip
.025” x 6” x 6” sheet	1	3003 aluminum sheet
.125” x .75”x 12” strip	1	Delrin strip
Servo	1	HS-425 standard servo.
Servo controller	1	Servo controller with endpoint and speed adjustments.
Nuts	100	#4-40 standard grade nuts
Washers	100	#4 standard grade washers