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Team 4

Automate Sample Measurement for Leco GDS 900

Risk Reduction Presentation

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Project Overview: Background

  • Our Sponsor: Prof. Kenneth Vecchio & Dr. Haoren Wang
    • Advanced materials discovery
  • Sponsors Objective: Automate the elemental analysis via Glow Discharge Spectrometer

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Project Overview: Objective

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Project Overview: Hardware Requirements

  1. Positioning of wagon-wheel requires 3 DOF
  2. Precision: +/-.5mm
  3. Move and retract wagon-wheel between samples
  4. 3 seconds (~200mm Y and ~ 100mm Z)
  5. Press wagon wheel against O-ring
  6. 3.5-5N

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Project overview: Software Requirements

4. Facilitate Communication between GDS900 Machine, CornerStone Application, and PLC

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  • User Input requirements:
    • Start/Stop machine from PC
    • Vacuum seal response
      • Skip specific spoke
      • Try again
      • Abort

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Project Overview: Constraints

  • Physical components must fit in enclosure
  • Electrical harnesses must fit through grommet
  • P1K PLC is limited to 15 expansion modules
    • I/O modules & ethernet module
  • Single spoke calibration

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Units (mm)

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Design Ideas

Rotating Gripper

2-Axis Gantry

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High Risk Areas

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Risk Reduction 1 - Gripper Design

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Wagon Wheel Diameter Tolerance Analysis

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Moving Forward

  • Going with the 2-Axis Gantry Design for aligning the wagon wheel

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  • 3rd axis mechanism TBD

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3. Deflection of y-axis rods

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Questions and Challenges

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Gantt Chart

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Thank You

Questions?

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Extra Slides

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Application/Device Communication Risk Reduction

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Extra Slides

Slider with in size constraints

Waggon Wheel Slipping

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Movement of 3rd Axis

  • 2 Proposed Ideas:
  • Pushing Platform on Base Plate
  • Pushing mechanism built into gripper
  • Dependent on 2-Axis Gantry and must be finalized after

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Pushing Platform on Base Plate

  • Ball Screw driven by servo motor with integrated force feedback
  • Moves the entire 2D Gantry
  • Low profile rails

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Pushing Mechanism built into gripper

  • TBD after finalization of 2D gantry system and gripper (to accommodate dimensional constraints)

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GDS Remote Client

Remote client enables customized programming of GDS commands

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Achieved:

  • Remote Client login and connection
  • Learned GDS Commands syntax
  • Received information from GDS

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Challenges:

  • Unable to send commands
    • Appears that no commands exist
    • Emailed LECO - awaiting response

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Software Communication

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