1. Final project submissions R L Fraley
Knuckle Draggers
Final project submissions
R L Fraley

2. Responsible for the following
Product full view
Went to MSU campus and used NX9 to make drawing used in this presentation
Component View
MSU NX9
Comparison drawings
Made slide showing the before and after
Mechanical Properties
In depth researched possible materials and selected best possible for a quality tool
Stress/ Strain Curve
Researched stress strain curves of 7075 T6 aluminum.

3. Product full view

4. Component View 4 3 1 Phillips head bit Flat head bit Tool Shaft2 3 4
Phillips head bit
Flat head bit
Tool Shaft
Handle with lights

5. Original design Handle
Redesigned handle
Original design Handle
New Handle made from 7075 T6 aluminum. It has LED lights which allow the user to see into dark areas while using the tool. The tail cap is removable and gives access to a hollow area in the handle. This area is used to store extra tool bits. The redesigned tool handle is comfortable in the hand, ergonomic and light weight. It also incorporates storage space and lighting into the design concept.
Original designed handle was to be manufactured from extruded
high density polyethylene (HDPE). It had no place for spare tool
bits. It was a crude design and rough in the hand.

6. Mechanical Properties of 7075 T6 Aluminum (Tool handle)
Ultimate tensile strength
83000 psi
Shear strength
48000 psi
Yield strength
73000 psi

7. Mechanical properties of W7 Carbon Chromium Vanadium Tool steel (Tool shaft)
Ultimate tensile strength
95000 psi
Yield Strength
60200 psi
Shear Strength
11600 ksi

8. Mechanical properties of W1 High Carbon Tool steel (Tool bits)
Ultimate tensile strength
psi
Yield strength
psi
Shear strength
11600 psi

9. Stress/ strain curve of 7075 T6 aluminum
Having a material that has such high stress strain properties allow us to insure the consumer that they are getting a product made from the best materials possible and it allows the consumer to use that product knowing that it should not fault as long as it is used properly.

10. (Max= 10 points) (Max= 5 points) (Max=10 points)
PEER EVALUATION
Each student is evaluated by his/her team leader on his/her participation, performance, etc. A sample of the peer evaluation is shown below:
Collaboration
(Max= 10 points)
Communication
(Max= 5 points)
Timely Delivery
Work Attitude
(Max=10 points)
Total points
(MAX = 30 POINTS)
Chris Dahl 9 5 28
David Marcum 8 4 26
Mike 7 2 22
myself