acrylic gearbox creative journey

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Acrylic Gearbox Creative Journey DAN GELLERT, JULIO MELO, RAYMOND BELL

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Page 1: Acrylic gearbox creative journey

Acrylic Gearbox Creative Journey

DAN GELLERT, JULIO MELO, RAYMOND BELL

Page 2: Acrylic gearbox creative journey

Design Sketch

Page 3: Acrylic gearbox creative journey

Different ideas of design

Learning from other peoples mistakes. Making the design suitable for the job How will it perform ?

Page 4: Acrylic gearbox creative journey

Safety Diagnosis

Is it safe to use? How can we make it safe ?

Page 5: Acrylic gearbox creative journey

Durability

How much can it take ? Calculations needed.

Page 6: Acrylic gearbox creative journey

Types of Gears

Page 7: Acrylic gearbox creative journey

Performance formula

m = mass being lifted (min 8kg) g = acceleration due to gravity h = height the weight is lifted (min 0.5m, max 1m) t = time to lift weight a distance of h V = motor voltage I = motor current D = maximum axial length of gearbox

D

pulley

finish

start

mg

velocity

gearbox

Mass being lifted

h

motor

Page 8: Acrylic gearbox creative journey

DC motor characteristics

Source: https://www.google.com.au/search?q=dc+motor+efficiency+curve&rlz=1C1VFKB_enAU620AU620&espv=2&biw=1366&bih=667&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiCyqjnyunLAhWEmpQKHZgTATwQ_AUIBigB#imgrc=i8qRUv34xsggqM%3A

Page 9: Acrylic gearbox creative journey

Calculations

AT MAX EFFICIENCY• Efficiency(%): 49.6• Power (W): 5.96• Speed (RPM): 9679• Torque (G.CM):60• Current (AMP): 2

AT MAX POWER• Output (W): 6.44• Speed (RPM): 7845• Torque (G.CM): 80• Current (AMP): 2.6

lifting mass (kg) g (m/s^2) force (N) velocity (m/s) velocity (cm/s) 6mm pulley ratio h (m) t (s) D (m) performance8 9.81 78.48 0.075942915 7.594291539 40.03991042 1 13.16779 0.1 2960.1333339 88.29 0.067504814 6.750481368 45.04489922 14.81376 2960.13333310 98.1 0.060754332 6.075433231 50.04988803 16.45973 2960.13333311 107.91 0.055231211 5.523121119 55.05487683 18.1057 2960.13333312 117.72 0.05062861 5.062861026 60.05986563 19.75168 2960.13333313 127.53 0.046734102 4.673410178 65.06485443 21.39765 2960.13333314 137.34 0.043395952 4.339595165 70.06984324 23.04362 2960.133333

lifting mass (kg) g (m/s^2) force (N) velocity (m/s) velocity (cm/s) ratio for 6mm pulley h (m) t (s) D (m) performance8 9.81 78.48 0.082059123 8.205912334 30.03419165 1 12.18634 0.1 2658.5641039 88.29 0.072941443 7.294144297 33.7884656 13.70963 2658.56410310 98.1 0.065647299 6.564729867 37.54273956 15.23292 2658.56410311 107.91 0.059679362 5.967936243 41.29701351 16.75621 2658.56410312 117.72 0.054706082 5.470608223 45.05128747 18.2795 2658.56410313 127.53 0.050497922 5.049792206 48.80556142 19.8028 2658.56410314 137.34 0.046890928 4.689092762 52.55983538 21.32609 2658.564103

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Thank you for listening!