Engineering Portfolio

1. Engineering Portfolio
Bin Bin Zheng
Mechanical Engineer

2. • Welcome, and thank you for taking the time to view
my portfolio. The Goal of this portfolio is to give you
a deeper insight into my experiences and skills I have
gained over my recent history.
• It is my hope that this will allow you to better assess
how my skills can be applied to your company.
• I would be happy to talk in more detail and can be
reached using the contact information at the bottom
of this page.

3. ABOUT ME
Enthusiastic and experienced design engineer, passionate
about designing, proficient in CAD modeling and Drafting
with 3-year experience in designing gears in Solid works as
a research student. Demonstrated ability to work as a team
in multiple deadline bound projects. I am driven by the
desire to gain knowledge and work hard to achieve the
desired goals.
• Objective: Seeking for the position as a Design Engineer
within an organization that progresses dynamically and
provides me an opportunity to enhance my skills and
further my knowledge.

4. Table of Contents
• Mars Rover – Class Project
• Upright Reclining Wheelchair – Class Project
• Adjustable Scalpel – Class Project
• Matlab Coding
• Simulations
• Miscellaneous

5. Mars Rover
• The main focus of this project was to create
a realistic rover that could be used for the
Mar exploration.
• From my research of the current expectation
of the rovers, one main requirement is the
mobility over different obstacles.
• I designed this model with the desire of
flexible legs and easy assembly and
replacement of parts.
• The legs would be able to rotate to a certain
degree and the back wheel would be able to
absorb the extra during this procedure and
keep the vehicle upright.

6. Mars Rover
Wheel x6 Front Wheel Hub Wheel and Motor Assembly Gear Assembly Axis
Back Wheel Hub
Circuit Board
Housing
Sheet Metal Frame
Back Wheel Hub Assembly
The aim of this project was
to create a rover that has
the ability to climb over
rocks and up steep slopes.
I designed each part to be
cost efficient and well
balanced when maneuvering
difficult angles.

7. Mars Rover
Wheels Frame Assembly
Complete
Assembly
This frame was designed to
be made out of sheet metal
for light weight and easy
production. A steel bar and
spacers are placed between
the two sheet metal to
enforce the structure and
prevent structural bending.
The axis is placed further to
one side to counter balance
the whole vehicle when the
frame is rotating.
This model was designed to rotate its wheels
frame separately from its body. Each wheel
frame can rotate to different degrees separately.
The back wheel frame design allows for the
frame to absorb the stress of climbing over
obstacles.

8. Mars Rover

9. Upright Reclining Wheelchair
• The main focus of this project was to design a wheelchair that
would be able to bring a disable person upright as if they were
standing and be low in cost.
• My research found that the frame was going to be a large issue.
I run many simulations on stress levels on the frame before I
began building it.
• I design so as the person sitting in the chair is being lifted
upright, he would have feet, back and arm support to provide a
comfort mobility.

10. Upright Reclining Wheelchair
Motor Linear Actuator
Seat Supporter
Hollow Steel Frame
I chose the linear actuator over
the Hydro Lift because the
hydro tank and pump would be
too big and heavy to be
mounted onto a wheelchair.
This three-part system was
designed to absorb some of
the weight when the rider is
seated on the wheelchair.

11. Upright Reclining Wheelchair
Frame for Chair
Frame for Chair
I created this design with the aim of
using simple materials that can be
bought from a local hardware store.
When the seat lifts up, the back stays
in the same position, providing back
support throughout the process of
changing positions.

12. Upright Reclining Wheelchair
The linear actuator is
attached to the frame and
the bottom of the seat. The
seat is reinforced by two
steel rods to help prevent
bending of the frame for
the seat.
The linear actuator was mounted onto the wheelchair frame for
further support. The angle was calculated to provide the most
support when the chair is in the upright position.

13. Upright Reclining Wheelchair

14. Upright Reclining Wheelchair

15. Upright Reclining Wheelchair

16. Adjustable Scalpel
• The main focus of this project is to design a cost-efficient
scalpel for doctors. Doctors spend thousands of dollars
on customizing scalpels that fit their hand size.
• I wanted to design a scalpel that can be adjustable to all
hand sizes and have interchangeable parts to save on
cost.
• The blade is interchangeable with the handle that can
retrace and change length according to the user’s hand
size.

17. Adjustable Scalpel
Blade Holder Blade Holder
Blade Key
Body of the Knife
The aim was to design a scalpel that would
have interchangeable parts and be adjustable
to any user’s hand size.
The Blade Holder would house the blade
and would snap into the casing of the
handle.
The blade would be interchangeable, similar
to x-acto blade replacements.

18. Adjustable Scalpel
Slider Body of the Knife
Complete Assembly
The slider would be able to adjust to
any length to customize to the user’s
hand size. A bolt would keep it at that
length for the user.
Each part would be interchangeable
and easy to replace if it ever gets
worn or breaks.

19. Adjustable Scalpel
This design will lower cost in the
medical field.
Doctors would not need to buy
custom made blades for
themselves when they perform
surgery.

20. Matlab
Stress Analyzation Code
Stress Analyzation Code
Stress Analyzation Code
MatLab scribe for stress
analyze for principal normal
stress

21. Matlab
Gear
Dimensions
Gears
Train
Engine Lathe
Operation Mill Turning
Operation
• Matlab scribe
to find all the
properties of a
gear train set. • Matlab scribe to
find the dimensions
of a given gear.
• Matlab scribe to find the
measurements to cut a certain rod
and the necessary procedure need
to cut it.

22. Matlab
Code for Stress, Strain, Deformation
Code to find STES Code to find
TES
Code for
stress, Strain,
Deformation
These are Matlab code to find the stress,
strain and deformation for a given
material.

23. SolidWorks Simulation
Model for
Simulation
Air Flow Rate Simulation
SolidWorks simulation
for air resistence for a
car model I created,
The simulation shows
where the most
resistence and how
much drag is created
from the model.

24. SolidWorks Simulation
Stress Analysis Simulation
This simulation
determines the
displacement and
strain under a
certain amount of
load or force that
is applied to the
object.

25. Miscellaneous

26. Miscellaneous

27. Quick Acting Hold-down Clamp
This is the Solidwork drawing for a quick
acting hold-down clamp. I draw each part
from scratch.
Then I mate each part together to complete
the assemble.

28. Shaper Tool Head Assembly Project
This is the Solidwork drawing for a shaper tool
head. I draw each part from scratch.
Then I mated each part together to complete
the assemble.

29. Shock Absorber and Strut Assemble
This is the Solidwork drawing for a shock
absorber and strut. I draw each part
personally.
Then I mated each part together to complete
the assemble.

30. Welder Arm
This is the Solidwork drawing for a welder arm.
I draw each personally.
Then I mated each part together to complete
the assemble.

31. Butterfly Valve Assembly
This is the Solidwork drawing for
a butterfly valve. I draw each
part personally.
Then I mated each part together
to complete the assemble.

32. • I would be happy to talk in more detail and can be
reached using the contact information at the bottom
of this page.
• I hope you have a better understanding of who I am
and consider a position for me at your company.
• Thank you for taking the time to look through my
portfolio.