Team Design Project

1
Team Design Project
Second Design Review 24-262 Stress Analysis March
29, 2005

• Hanjin In
• Jared Ross
• Joshua Sztul

2
Outline

• Previous Prototype
• Modifications of Design
• Results From Current Prototype
• Numerical Data
• Future Improvements

3
Previous Prototype

• Most Members Straight
• Base with Cross Bracing
• Heavy Arm - Poor Bracing
• Large Deflections
• Gears Slipped
• No Lifting Accomplished

4
Modifications of Design

• All Members in L or U Shape
• Retrofitted Tower
• Redesigned Support Arm
• Redesigned Lifting Arm
• Gear Ratio Adjusted

5
All Members in L or U Shape
First Design
Current Design
6
Support Arm
First Design
Current Design
7
Lifting Arm
First Design
Current Design
8
Current Prototype

• 22 Oz
• 1.9 Lift

9
Numerical Data

• 25 Gearing Ratio
• 8 Lever Arm
• Required Torque 128 oz-in
• Output Torque 345 oz-in
• Range Of Motion 48
• 6.5 Vertical Motion

10
Future Improvements

• Unified Gear-Box Structure
• Shorter Lifting Arm
• Lift From Above
• Remove Unnecessary Cross Bracing

11
Summary

• Modifications of Design
• Results From Current Prototype
• Future Improvements