DATE: 2019.06.13 This is the final presentation of our project. Our goal is to design a new handle for Parkinson's diseases patients with a function of automatic stabilizing. This handle has been designed as a spoon for the prototype. We expect this spoon will make patients life easy while they eating.

1. FINAL PRESENTATION
Design of a Stabilizing Handle for Parkinson’s Disease Patients
Sponsored by the Vibrations Laboratory
13.06.2019
Atakan Botasun
Doğa Volkan Altundağ
Mahmut Demir
Furkan Ginaz Almus
Samet Baykul
Onur Bozkurt
Barış Polat
Aziz Emre Akgündüz
ME407 Mechanical Engineering Design - Spring 2019 - G2

2. OUTLINE
1. Introduction
2. Visuals
3. Working Mechanism
4. Original Aspects
5. Modifications
6. Analysis
7. Components
8. Conclusion
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3. 1. INTRODUCTION
NEED
Some patients suffer from problems while consuming food.
PURPOSE
To design and manufacture a prototype of a versatile stabilizing
handle for Parkinson’s Disease and Essential Tremor patients.
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2 3

4. 1. INTRODUCTION
DESIGN REQUIREMENTS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Functionality Enviromental Manufacturing Ergonomics Life Cycle
Self-stabilizing Safe Production Easy Dishwasher Usage Long Service Life
Attachable
Spoon/Fork
Recyclable Low Budget Lightweight -
Long Service
Duration
Toxin-free - Both Hand Usage -
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5. 2. VISUALS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
OVERALL DESIGN
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6. 2. VISUALS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
OVERALL DESIGN
6

7. 2. VISUALS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
OVERALL DESIGN
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8. 2. VISUALS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
INNER DESIGN
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9. 3. WORKING MECHANISM
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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Reduction in
Amplitude
Ease of Cleaning
Volume and Weight
Constraints
Ergonomics Life Cycle
70% reduction 65°C 80x80x250 mm User-friendly 1000 h
2 axes Dishwasher-safe Less than 350 g - -
0.5 - 1.5 Hz - - - -

10. 3. WORKING MECHANISM
• Decreasing vibration amplitude
• Eliminating gravitational effect
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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11. 3. WORKING MECHANISM
X-Axis
INPUTS
m = 0.265[kg]
L = 0.135[m]
R = 27.000
r = 0.005[m]
0.00[Hz] < w < 2.50[Hz]
RESULTS
k = 14.019 [N/m]
Maximum transmissibility in excitation frequency range: 0.200
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Y-Axis
INPUTS
m = 0.237[kg]
L = 0.150[m]
R = 30.000
r = 0.005[m]
0.00[Hz] < w < 2.50[Hz]
RESULTS
k = 13.940 [N/m]
Maximum transmissibility in excitation frequency range: 0.200
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12. 3. WORKING MECHANISM
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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Y axis X axis

13. 3. WORKING MECHANISM
DESIGN CRITERIA
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Reduction in
Amplitude
Ease of Cleaning
Volume and Weight
Constraints
Ergonomics Life Cycle
70% reduction 65°C 80x80x250 mm User-friendly 1000 h
2 axes Dishwasher-safe Less than 350 g - -
0.5 - 1.5 Hz - - - -
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14. 4. ORIGINAL ASPECTS
Mounting technique of constant force spring
- Twisting was eliminated
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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15. 4. ORIGINAL ASPECTS
Introducing new method for on/off feature - Tube locking spring
clip
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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16. 4. ORIGINAL ASPECTS
Unique shell design and assembling technique
- Simple and adjustable
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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17. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Material Usage in
Inner Parts
Rod Design Spoon Geometry Joint Assembly
Before ABS PC Telescoping Regular Spoon Spherical Joint
After 1060 alloy Detachable lid Asian Soup Spoon Universal Joint
Result
Strength Length of Rod Bowl Depth Rolling Elimination
Between Mockup and Detailed Design Phases
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18. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Between Mockup and Detailed Design Phases
• Rectangular end platform
for rod proposed for spring
connections
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19. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Between Mockup and Detailed Design Phases
• Constant force spring
connector redesigned
• Assembling components
revised
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20. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Joint Assembly Shell Thickness Bolt Assembly Attachment
Before
Two different sheet
metal parts
1 mm Bolt&Nut Delrin Clip
After Single part 3 mm Threaded Slot Screw
Result
Manufacturability Strength Manufacturability Reliability
Between Detailed Design and Manufacturing Phases
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21. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Between Detailed Design and Manufacturing Phases
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22. 5. MODIFICATIONS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Between Detailed Design and Manufacturing Phases
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23. 6. ANALYSIS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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24. 6. ANALYSIS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Stress Analysis of the Spoon
Equivalent (von-
Mises) Stress
Maximum
Principal
Stress
Minimum
Principal Stress
Minimum 1.27e-007 MPa -4.7635 MPa -18.493 MPa
Maximum 14.216 MPa 15.323MPa 4.5964 MPa
Minimum Occurs
On
Case Mass Rod
Maximum
Occurs On
Rod Rod Rod
Rod
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25. 6. ANALYSIS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Life Cycle
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Safety Factor

26. 7. COMPONENTS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Component Material Total Price
Weight Stainless Steel
₺800
Tube Locking Spring Stainless Steel
CFS Spool Al
Case Al
CFS Connector Al
Female Connector Al
Holder Al
Pole Al
Rod Al
Components which are Manufactured by Machining
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27. 7. COMPONENTS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Component Material Total Price
Spoon ABS
₺230Handle Case ABS
Lid ABS
Components Which are Manufactured by 3D-Printing
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28. 7. COMPONENTS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Component Material Price
Constant Force Spring Stainless Steel ₺310
Helical Tension Springs Stainless Steel ₺15 x 6 = ₺90
₺400
Components Which are Directly Bought from Manufacturer
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29. 7. COMPONENTS
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
Component Price Total Price
Machined Components ₺800
₺1430Springs ₺400
3D Printed Components ₺230
Overall
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30. 8. CONCLUSION
OUR EXPERIENCES
• Engineering Software
• Manufacturing
• Time management
• Communication Skills
• Team Working
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
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31. FUTURE IMPROVEMENTS
• Compatibility for regular silverware
• Compactness
• Lightweight
• Alternative for constant force spring
ODTU ME407 Mechanical Engineering Design - Spring 2019 - Group 2
8. CONCLUSION
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32. • Thank you
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