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

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

Reverse Engineering and creating specific features from the polygonal and geometric data

Continuing to create and align specific parts to the overall rail form

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.

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DDI Vintage Jeep Frame Presentation 2008

by Direct Dimensions, Inc. on Oct 22, 2009

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DDI Vintage Jeep Frame Presentation 2008 — Presentation Transcript