acrylic gearbox creativity journal
TRANSCRIPT
CREATIVITY JOURNAL
Nathan Prezioso, Hamna A’fifah, Lachlan Tactor, Raqayyah Ahmad Jamil
LE’ Top Gear
OUTLINE
• Problems• Ideas• Concept• Performance Formula• Gears• Motor• Calculations• Sketches• Final Design
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
IDEAS: MIND MAP
WHAT WE WANT?
• High speed • Considering other aspects - superglue, weight, materials• Considering gear reduction and friction• Compact design- smaller gearbox• High performance• Large torque
PERFORMANCE FORMULA
•
SPUR GEAR
• Pros• Simple• Constant • Transmit large amount of power
• Cons• Slow-speed gear• Stress high• noise
WORM GEAR
• Pros• Runs smoothly and quietly• Reduce speed and increase torque
• Cons• More power loss• Produce heat• Less efficient
HELICAL GEAR
• Pros• Runs smoothly and quietly• Practical for high load application
• Cons• More power loss• Less effiecient• Difficult to manufacture
MOTOR
•
SOME CALCULATION
Number of teeth of pinion = 16Number of teeth of gear = 48Gear ratio = 3 : 1
Pinion rotates 3 times for 1 revolution of gear
SOME CALCULATION
SKETCHES 4-3-5 METHOD
SKETCHES 4-3-5 METHOD
SKETCHES 4-3-5 METHOD
FINAL DESIGN
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FINAL DESIGN
Front viewCasing of gearbox
REFERENCES
• https://www.nord.com/content/gear-ratio
• Fundamentals of machine design 5th edition, wiley