scott stubbs design portfolio - 041916
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B Y U C A P S T O N E
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Scott Stubbs
Product Development Portfolio
9 Design Skills Represented by Several Projects
Discovering – Find existing knowledge and skills, find out customer needs.
Creating – Knowledge generation and restructuring
Representing - Graphical representation of data
Modeling – Calculations to justify ideas
Prototyping – Physical approximations of ideas for further justification
Experimenting – Measuring the performance of the product
Evaluating – Interpretation of the quality of the design
Deciding – Using information to decide a course of action
Conveying – Sharing design information with necessary individuals
BYU Capstone Project 2015-16Discovering
• Invasive examination of existing products• Internet search of existing products• Patent Search for pitch training devices
Sunstone Engineering – Design Engineer 2011 - Present
Exploring the design space for an
adjustable laser holder.
Creating
Creating Sunstone Engineering – Design Engineer 2011 - Present
We needed a high wattage, low resistance (33 ohm) resistor to
discharge ultra capacitors. Existing resistors were either very
expensive or didn’t have the required electrical properties.
Existing Resistor
Initial Sketch
Final Product - Nichrome ribbons with aluminum heat sink
Creating Sunstone Engineering – Design Engineer 2011 - Present
Existing linear actuators of the correct size are too
slow for the intended application, so I
developed an actuator with a motor and Acme
thread that can reach the intended speeds.
Existing Actuator 3D CAD Rendering
Prototype I Machined for Testing
Creating Sunstone Engineering – Design Engineer 2011 - Present
This rotary tool is designed with the Dremel in mind, but is specifically made to sharpen
TIG welding electrodes at the correct angle and
position.
Prototype
Existing Product
The electrode approaches the
diamond wheel at the ideal angle and
position.
Initial Designs
Representing Sunstone Engineering – Design Engineer 2011 - Present
Weld Heads designed to perform spot welds (using micro TIG technology) on conductive material such as copper battery tabs and
aluminum sheeting.
Representing Sunstone Engineering – Design Engineer 2011 - Present
Opposed Spot Weld Head designed to replace a wider profile version that had issues with electrode deflection
and a high cost of goods.
Representing Sunstone Engineering – Design Engineer 2011 - Present
“Micro” weld head designed to deliver continuous forces up to 3000gF. Replaces a version that has arced electrode motion (instead of linear up and
down) and that takes 10 times longer to assemble.
Representing Sunstone Engineering – Design Engineer 2011 - Present
Impact Stud Welder designed to weld the studs onto earrings. Improves upon existing units by delivering closed loop feedback, laser location, and motor driven retract/impact (older models use springs).
Representing TES Equipment Supplier – Technician 2006 - 2011
These assemblies were created by measuring each
individual part of an encapsulation machine and
making 3D models in Solidworks. They are used to improve communication with
the supplier in China and to
illustrate the User Manuals/Part Store.
Representing TES Equipment Supplier – Technician 2006 - 2011
Additional assemblies modeled in Solidworks.
Representing TES Equipment Supplier – Technician 2006 - 2011
This display is used at tradeshows and in the lobby at
TES. The sheet metal is laser cut
and I MIG welded the frame. Blue LED light strips
are encased behind the cutout letters
for the glow effect.
Representing BYU Capstone Project - Drawings 2015-16
Drawings for creating a pitch training softball.
Representing BYU Capstone Project 2015-16
Team logo design possibilities created in Adobe Illustrator.
Modeling BYU MFG 431 – Tool Design
Calculations for most efficient punch pattern, required press tonnage, and size/tolerance of each necessary component to create
the sketched part.
Modeling BYU MFG 431 – Tool Design
Calculations for hole sizes and location pin sizes/tolerances on a
fixture plate.
Prototyping BYU Capstone Project 2015-16
I drilled holes in existing balls and soldered LED lights to batteries and switches to ascertain how well the light could be seen during a
pitch. It was determined that the yellow cover is too distracting and a darker color was chosen.
The final prototype includes a 3D
printed charging base that I modeled in Solidworks and a
team member printed.
Prototyping Sunstone Engineering – Design Engineer 2011 - Present
This is a looks-like/works-like prototype I machined as proof of concept for a pneumatic
tweezer hand piece I designed.
Final Production UnitFinished Prototype with welded sheet metal case
Prototyping Sunstone Engineering – Design Engineer 2011 - Present
This prototype is the result of a design challenge to create the simplest form of a
weld head possible, using minimal components, and minimal assembly
time. The design became so compact that it was converted to be used as a
hand-piece as well.
Prototyping Skill - Machining
Plates for a weld head prototype designed to be used with a XYZ
positioning robot.
Vice we machined for a class project.
Fixture I designed and machined for welding tabs to battery packs.
I have used manual mills and CNC mills to create prototypes and
fixtures.
Simple G-code written for a class
project
Prototyping Skill – Turning (lathe)
Aluminum and nylon hammer designed and turned on a manual lathe
for a class project.
Impact Stud Welder prototype parts
made on a manual lathe.
I wrote the G-code for the pillars of the clock and they were
turned on a CNC Lathe
Prototyping Skill – Sheet Metal Work
Brackets made for an articulating monitor arm and
designed to add another degree of freedom (rotation parallel to
the plane of the monitor)
Prototype Heat Sink for ultra capacitor
cooling.
Drawer Guide Bracket made to replace broken plastic mounts on
kitchen drawer guides.
Sheet metal foot pedal I designed to
be used for actuation of weld heads
Prototyping Skill – MIG Welding
Man Cage created for a forklift. I cut and welded the square tubing for mounting to an
existing skid.
Flip table I made to enable ease of access while mounting assemblies to the encapsulation machine
tables.
Prototyping Skill – Micro Welding
Micro TIG welders deliver pulsed arcs to create spot welds. They can be used for many prototype applications including wire welds, seam welds, battery tab welds, and other fine detail work.
Capacitive Discharge spot welding can be used for thin sheeting, wire welding, battery tabs, medical equipment, roll spot welding, and many other prototyping applications.
Prototyping Skill – Wood Working
Signs my wife and I designed and built.
I use a Dremel to carve figurines out of wood as a hobby
Shipping Crate I built for an encapsulation machine
Stairs I built for my brother’s Great Dane to use.
Pattern made out of MDF for an aluminum sand casting
project.
Experimenting Sunstone Engineering – Design Engineer 2011 - Present
Test strips of copper-to-steel welds used to determine ideal timing settings for electrode retraction, distance, and speed. The experiment used visual indication and
spot size measurements.
Experimenting BYU Capstone Project 2015-16
Test fixture designed to hold the ball in a lathe and allow us to verify revolutions per second measured by gathered and
interpreted accelerometer data.
Experimenting Sunstone Engineering – Design Engineer 2011 - Present
Test used to determine ideal configuration of fins and fans for a resistor prototype
Experimenting BYU STAT 201 – D.O.E. Project
A D.O.E. was performed to
determine what plane shape factors had the
most influence on distance traveled. The
launcher was then used in a different
class for a competition.
Evaluating BYU STAT 201 - Statistics
Evaluation of the gathered launch data suggests which combinations provide the longest distance traveled.
Evaluating BYU MFG 130 – Plane Project
The flight data of several planes is evaluated to determine which launch methods and designs lead to
the least variation in distances traveled.
Evaluating BYU MFG 431 – Tool Design
Analysis of time spent and cost of
goods help predict if a
fixture will save money in the long run, or
become a liability.
Deciding BYU MFG 431 – Tool Design
A decision table assisted me in choosing the best design to meet
the specified criteria.
Deciding BYU MFG 431 – Tool Design
Another fixture design project requiring a
decision table to choose the design with the best
results.
Conveying Sunstone Engineering – Design Engineer 2011 - Present
Excerpts from product assembly manuals for two of the weld heads I
designed.
Conveying Sunstone Engineering – Applications Engineer 2011 - 2013
Email summary of sample test results performed for a
customer. As the applications engineer at Sunstone, I performed
several sample tests per week and sent a similar
summary for each one, with an accompanying video of
the process.
BYU Capstone Project 2015-16Conveying
Summary of information obtained during a phone
conversation with a supplier. The
information was shared with team members to suggest how we should move forward with the casting portion of the
project.
Conveying Sunstone Engineering – Design Engineer 2011 - Present
Summary given to marketing outlining the benefits of a new weld head and how it compares to the old.
Conveying TES Equipment Supplier – Technician 2006 - 2011
Excerpts from a user manual I wrote to be programmed into the HMI of an encapsulation machine.