DDI Vintage Jeep Frame Presentation 2008
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Transcript of DDI Vintage Jeep Frame Presentation 2008
Reproducing a Jeep BRC-40 with Reverse Engineering
Michael Raphael,Direct Dimensions, Inc.
Discussion Topics• Historical Overview of the Jeep• Specific Client Request• Identifying the Problem• Overview of the Solution: Jeep Frame
Case Study• Jeep Frame – Review• Benefits/Value• Summary/Conclusion
Historical Overview of the Jeep
• Original “Jeep” Prototype • 1940 American Bantam Car Company
pilot model
Specific Client Request
• Measure various parts from antique BRC-40 Jeep frame
• Parts needed to be completed in an AutoCAD format
• Accurate models needed so client can duplicate them exactly
• Specific parts include: frame rails, spring mounts, and “K” cross member
Identifying the Problem
• Original deteriorating frame posed measurement problems because of frame warping and corroded components
• “Design intent” model needed
• A combination of the LDI Laser Scanner mounted on a 12’ FARO arm and point probing allowed for accurate data capture
• Using RapidForm XOR allowed DDI to import all scan and digitizer data and reverse engineer the parts using one software package
Overview of the Solution: Jeep Frame Case Study
Overview of the Solution: Jeep Frame Case Study
Overview of the Solution: Jeep Frame Case Study
Initial Step – Laser Scanning and Data Capture• Scanning the Jeep frame with the LDI
Laser Scanner
Next Step –Aligning Point Clouds
• Aligning the captured point clouds in RapidForm
Next Step – Mirroring Frame
• Mirroring and Comparing one side of the frame to the other
Next Step – Polygonal Modeling
• Aligning, cleaning, and filling in holes on the polygonal model
• Aligning part positions to hole locations and other features
Next Step – Reverse Engineering Specific Parts
• Aligning part positions to hole locations and other features
Next Step – Reverse Engineering Specific Parts
Next Step – Reverse Engineering Specific Parts• Reverse Engineering and creating specific
features from the polygonal and geometric data
• Continuing to create and align specific parts to the overall rail form
Next Step – Reverse Engineering Specific Parts
• Overlaying the “Design Intent” model on top of the completed polygonal model to check for error and inconsistencies
Next Step – Comparing Captured Polygonal Model to “Design Intent”
Final Step – Deliver Requested Models
• Complete all modeling and deliver the requested models in proper formats
Jeep Frame - Review
Benefits/Value
• Because project was completed using one software package, time was not lost translating compatible files between programs
• Using both a laser scanner and digitizer allowed for a checks/balances and more complete data to build and align parts
Summary/Conclusion
• All parts were modeled to client’s specifications
• With this “digital archive” client can replicate these parts an infinite amount of times and now has a precise digital record of this frame
• This method is far more accurate than any other method to measure aged parts
Questions?
Thank you!
Michael Raphael,Direct Dimensions, Inc.