Babe's Fiber StarterDesign and Assembly

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Babe's Fiber StarterDesign and Assembly

• Introduction
• Construction process of CAD model
• Parts modeling
• Assembly
• Motion simulations
• Bobbin-wheel rotation simulation
• Bobbin-flyer simulation
• Assembly Process simulation
• Collaboration inside our team
• Conclusion

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Introduction

• Usage
• Babe's Fiber Starter was developed to provide an
  inexpensive way to spin raw fiber into yarn
• Main components
• wheel
• flyer
• bobbin
• treadle
• frame

Babe's Fiber Starter - Single Treadle - White
Frame New Model
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Product Design

• Product Name
• Babe Fiber Starter
• Single Treadle Spinning Wheel
• Inventor Nels Wiberg
• Manufacturer
• Green Valley Enterprises, Inc.
  Beaver Dam, Wisconsin
• Cost153.05

Babe's Fiber Starter - Single Treadle - White
Frame Old Model
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What Makes the Fiber Starter Unique

• Material
• Frame PVC Pipe
• Wheel Wheelchair wheel
• Easy Disassembly
• Easy Storage
• Lightweight
• Portable
• Marketed for Beginners
• Easy to use

Babe's Fiber Starter Subassembly and Parts
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Construction process of CAD model

• Top down modeling techniques were used in
  construction.
• A master part was created which contained several
  important dimensions.
• The 8 components of the assembly are referenced
  to the master part.
• All parts are proportional and key dimensions can
  be changed with expressions.
• The string, cord, foot pedal and linkage is not
  included.

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Bobbin-wheel rotation simulation
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Bobbin-Flyer Simulation Motion
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Assembly Process Simulation
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Normal Operation

• Bobbin and wheel speed increase linearly with the
  speed of foot pedal pumps.
• The current ratio between the wheel and the
  bobbin is 6.
• This ratio could be increased for faster winding
  of string but there is a point where the string
  velocity will be to fast and the string may get
  tangled or damaged.

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Flyer and Bobbin Motion

• Users actions greatly affect motion
• Feeding yarn onto bobbin causes flyer to shake
  motion
• Yarn fed to bobbin too fast can cause flyer to
  rotate
• User eventually achieves steady rhythm

Flyers Angular Displacement
Time
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Collaboration inside our team

• Assignment allocation
• Flyer Bobbin by Xiaoxia Lai
• Frame by Luke
• Wheel its axle by Abigail Clarke
• Discussion
• For bottom-up assembly, how to mate parts,
  especially when the units of parts are different
• Top-down assembly model, what need to go into
  master part

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Conclusion

• The information including the dimension and the
  shape of mating faces should be discussed first
  before the parts modeling for bottom-up assembly
• Difficult to catch comprehensive design
  dependency parameters when making the master part
  for top-down assembly
• Collaboration is very important
• When modeling parts, it is important to find the
  most efficient way. And practice makes perfect!

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Citations

• Babe's Fiber Starter - Single Treadle - White
  Frame New Model. Online image Available
  http//www.babesfibergarden.com/BFG92001/BABE1296.
  HTM, December 4, 2005.
• Babe's Fiber Starter - Single Treadle - White
  Frame Old Model. Online image Available
  http//www.babesfibergarden.com/BFG92001/BABE1296.
  HTM, December 4, 2005.
• Abigail Clarke (Graphic Artist). (3/11/05).
  Babe's Fiber Starter Subassembly and Parts
  Drawn Image, Ink.