1. 2AC3 Advanced
CAD
Project #1
Motor Dimos
Group Members: Dimos Siagoulis, Yaochen He, Nathan Smith and Vinicius
Reis
Instructor: Dr. Lucian Balan
2. Our Goal
“To apply skills learned in the
classroom and develop new
ones while working with the
overall objective of
reproducing a life sized pocket
bike”
Vinicius
7. Dimos’ Summary
• Total Hours: 60+
• Total parts created: 15 created and over 10 edited
• Self- Learning: Wire Frame, Boolean Operation and Sheet metal design
• Difficulty: The most difficult part was the frame, I had issues with filleting
the corners of the ribs, in some cases I had to change the rib sketch to have
rounded corners, in others this technique didn’t work.
• Another difficulty was editing other’s parts, because each person has their
own style I had to figure out what they did and fix it, which sometimes took
longer than starting from scratch
• When making the final assembly we ran into many issues with parts not
fitting into each other, or intersecting other parts. I spent over 20 hours
editing parts to get them to fit to be assembled
• What I liked: Once I overcame the initial difficulty, CATIA easily became
my favourite 3D modelling software. It’s really powerful and very
rewarding when your project is finally finished.
Dimos
8. Dimos’ Parts Dimos
Frame: 14 hours
Learned: Wire Frame and sheet metal design
Difficulty: Had trouble with mirroring the frame, I had to actually
construct both sides of the frame manually. Also had trouble with
fillets on the curves. My most problematic and difficult part.
14. Final Stationary Assembly
I imported Vinicius’ tire assemblies, Chris’
Front forks assembly, Nathan’s chain assembly
And my engine assembly and constrained them
To the frame.
Over 10 hours of work on the assembly including
Editing pieces so they fit into each other
Dimos
15. Chris’ Summary
• Total Hours: 40 hours
• Total parts created: 10 parts created, fitting and videos
• Self- Learning:
o Working with caliper
o Creating disassembly using workbench DMU Fitting
o Using Jing to record
• Difficulty:
o Get all possible dimensions
o Be creative on hidden dimensions
Chris
21. Things I learned: Fitting
Chris
Learning from YouTube
Channel, Practising in
workbench DMU Fitting
while group members
were working on
assembly
22. Vinicius’ Summary
• Total Hours: about 50 hours
• Total parts created: around 30 parts created and 4 assemblies
• Self- Learning:
o Generative shape design (Threads),
o Drafting workbench (3-D text)
o Developing planes with various commands
• Difficulty:
o Designing and being able to extrude on an angle
• Solution: planes at an angle from surface
o Making groves on non-flat services
• Solution: spline and sketch
o Complex Parts
• Solution: taking it layer by layer to make part
23. Vinicius’ Parts
Vinicius
Front Rim: 3 hours and Valve Cap: 2 hours
Learned: Creating threads using helix application on Generative Shape Design
25. Vinicius’ Challenges &
Solutions
Making planes
on an angle to
add an angle
extrude to the
part
Adapting a way to add groves to a curved surface: spline and a sketch to
follow spline shown above
Vinicius
Complex part that has
parts put together
that are awkward and
not easily designed
done by layers as a
solution
27. Wheel Assembly: 2 hours
Tire
Brake
Disk
Front Rim
Front Shaft
Steering Ball Bearing
Bushing
Valve Cap and Valve Steam
28. Intake Assembly: 3 hours
Gasket
Intake
Manifold
Intake Cap
Engine Bridge Handle
Intake air
fuel mix
Flap
29. Nathan’s Summary
• Total Hours: approximately 70 hours
• Total parts created: 23 parts created and 5 assemblies
• Self- Learning:
o Generative shape design (chain paths)
o Chain kinematics
o Rendering of parts with material selection
• Challenges:
o Chain alignment and distancing
• Physical chain was loose
• Distance had to be calculated
o Large number of kinematic elements
• 410 kinematic joints
• Several hundred constraints
• Nearly 500 parts in assembly
33. Nathan’s Assemblies
Nathan
Chain assembly/ kinematics: 50+ hours
All parts + assembly = approx. 1 hour
Challenge of the chain:
- could not be disassembled
- loose on actual bike
Time taken: approx. 30 hours
Kinematics time taken: approx. 20 hours
34. Nathan
Clutch Assembly: 1.5 hours
Challenge of the clutch:
- held together by springs
- Could not be disassembled
- Tight space for measurements
- Irregular shapes that did not repeat
37. Addition Group
Achievements
• Managing Files (using Dropbox)
• Following set name style
• Modifying parts to fit each others
• Understanding each others strengths and weakness
Group
