Creative Jornal

1. CREATIVITY JOURNAL
Nathan Prezioso, Hamna A’fifah, Lachlan Tactor,
Raqayyah Ahmad Jamil

2. OUTLINE
• Problems
• Ideas
• Concept
• Performance Formula
• Gears
• Motor
• Calculations
• Sketches
• Final Design

3. PROBLEMS
• Lift 10kg of weight
• Time constraint
• Should not break
• Made from acrylic sheet and glue- limited resources
• Lift at least 500mm up the ramp

4. IDEAS: MIND MAP

5. WHAT WE WANT?
• High speed
• Considering other aspects - superglue, weight, materials
• Considering gear reduction and friction
• Compact design- smaller gearbox
• High performance
• Large torque

6. PERFORMANCE FORMULA
•

7. SPUR GEAR
• Pros
• Simple
• Constant
• Transmit large amount of power
• Cons
• Slow-speed gear
• Stress high
• noise

8. WORM GEAR
• Pros
• Runs smoothly and quietly
• Reduce speed and increase torque
• Cons
• More power loss
• Produce heat
• Less efficient

9. HELICAL GEAR
• Pros
• Runs smoothly and quietly
• Practical for high load application
• Cons
• More power loss
• Less effiecient
• Difficult to manufacture

10. MOTOR
•

11. SOME CALCULATION
Number of teeth of pinion = 16
Number of teeth of gear = 48
Gear ratio = 3 : 1
Pinion rotates 3 times for 1 revolution of
gear

12. SOME CALCULATION

13. SKETCHES 4-3-5 METHOD

14. SKETCHES 4-3-5 METHOD

15. SKETCHES 4-3-5 METHOD

16. FINAL DESIGN
+

17. FINAL DESIGN
Front viewCasing of gearbox

18. REFERENCES
• https://www.nord.com/content/gear-ratio
• Fundamentals of machine design 5th edition, wiley