final design presentation - csu, chicomicrosoft powerpoint - final design presentation.pptx author...
TRANSCRIPT
![Page 1: Final Design Presentation - CSU, ChicoMicrosoft PowerPoint - Final Design Presentation.pptx Author gkwatkins Created Date 7/21/2014 4:45:38 PM](https://reader036.vdocument.in/reader036/viewer/2022062602/5edfd69fad6a402d666b2369/html5/thumbnails/1.jpg)
FINAL DESIGN
PRESENTATION
Multi-Axis Positioning System for Precision Shaft Measurement
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The Team
Zachary RathMechanical
Brad PatchenMechanical
James AndersonMechatronic
Aaron JohnsonMechanical
Logan SepichMechatronic
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Sponsor and Faculty Advisor
Sponsor Contact: Anthony Franceschi
Faculty Advisor:
Dr. Varahamurti
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Background
Micro-Vu is looking to open a new door in
their metrology machines. Currently Micro-Vu
has no options for high precision non-contact
shaft measurement machines, and are looking to
expand into this field.
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Background
Telecentric Backlight – Light shoots
straight and not at an angle, giving
a proper diameter measurement.
Normal Backlight – Light shoots in
all directions bouncing off the
shaft creating a false diameter on
the probe for the shaft.
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Problem Definition
Micro-Vu is looking to develop an automated multi-axis
positioning system. The goal is to use the system in conjunction
with an optical non-contact probe to conduct precise
measurements of vertically oriented shafts.
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Customer Requirements
• Budget of $15,000
• Support a vertically oriented shaft of 10kg and of max length 350mm and max diameter 80mm
• System must be designed in metric units
• Must have a tailstock, rotary stage, and linear axis
• Must have high precision and repeatability
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Design Solution
Old Design Current Design
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Tailstock
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Sensor Platform
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Rotary Stage
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Controller and Amplifiers
● Use of Galil 4133 Econo Motion Controller
● Computer Software: Galiltools
● Kollmorgen AKD Drive
● Advanced Motion Control Digital Amplifier
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Motors and Power Supplies
● Kollmorgen Cartridge DDR Motor. This is
powered using wall AC and a 24V logic
supply unit as well.
● Kollmorgen AKM11B Servo Motor. This
very small motor contains the necessary
torque to spin our screw. Runs from a 75v
power supply running at 2.7A.
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Encoders and Feedback
● Renishaw RGH20 readhead and RESR
encoder ring that carries a 0.1
micrometer pitch, which gave us a
resolution of one ten-thousandth of a
degree.
● Encoder built into the AKM11
for the linear axis. Which gave
us a resolution of 1.2 micrometers.
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Hardware Block Diagram
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Purchased Parts
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Fabrication
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Fabricated at Micro-Vu
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Fabricated in Chico
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General Testing
Test Spec Pass/Fail
Payload
Shaft
10 kg Pass
Maximum
Shaft
Length
350 mm Pass
Maximum
Shaft
Diameter
80 mm Pass
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Testing Rotary StageTest Spec Testing Value Pass/Fail
Diameter 100 mm 98 mm Pass
Height 100 mm 85 mm Pass
Speed 60 rpm 60 rpm Pass
Accuracy .05˚ .002˚ Pass
Repeatability .005˚ .001˚ Pass
Resolution .001˚ .001˚ Pass
Radial Runout 7 µm
Axial Runout 7 µm
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Testing Linear Axis
Test Spec Testing Value Pass/Fail
Travel Length 360 mm 500 mm Pass
Payload 3 kg Weight of
Sensors
Speed 200
mm/s
200 mm/s Pass
Repeatability 7 µm 4.7 µm Pass
Accuracy 10 µm 3 µm Pass
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Budget Cost
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Budget Funding
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Reflection
• Problems and Solutions• Machining to tight tolerances
• Purchased parts
• Merits of Design Solution• Rotary stage
• Simplicity of design
• Suggestions for future• Ease of disassembly
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Acknowledgements
• Micro-Vu
• Anthony Franceschi
• Dr. V
• Nick Repanich
• AVL Looms
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QUESTIONS?The End