3d solid laser modeling
TRANSCRIPT
3D SOLID LASER MODELING
Manufacturing Automation
December 8th, 2010
Presented By: Christopher N. Berry
Introduction
3D Solid Laser Modeling is a modern technique used to accurately represent physical objects into the virtual world.
Required Tools
HD Laser (Picza 3D Laser Scanner)
Image Processing Technology (Dr. Picza3)
CAD Software (SolidWorks)
What is Laser Modeling?
Creation of point cloud system representing a geometric surface with a laser beam.
Records distance values to the surface within the scanners field of view.
The object is then recreated in a “reconstruction” software package.
PICZA 3D Laser ScannerLocated in the Bell Hall 4th Floor IE Laboratory
Laser Scanner Mechanics
Data Acquisition
Data from laser transmitted to computer via USB.
Able to manipulate scan parameters. Resolution Quality
Laser Beam Pitch
Rotation Angle
Object Height
Object Reconstruction
Side View Top View
Data Conversion
After reconstruction complete, save file format as “.STL”.
This allows for post-processing of data in desired CAD program.
Post Processing
Used to eliminate scanning errors
Increases accuracy of scan
Enables reconstructed object to be utilized in CAE platform.
Post Processing Phase 1:
Importing Scans into SolidWorks
Enable SolidWorks Add-In “ScanTo3D”Step 1 of 14
Open File as “Mesh”Step 2 of 14
View Mesh of PartStep 3 of 14
Select “Mesh Prep Wizard”Step 4 of 14
Select the Mesh you Wish to ProcessStep 5 of 14
Select “No Orientation”Step 6 of 14
Use Tools to Select and Delete Excess MaterialStep 7 of 14
Hand Select Excess Material and RemoveStep 8 of 14
Simplify Mesh SizeStep 9 of 14
Change Global SmoothnessStep 10 of 14
Increase Boundary SmoothnessStep 11 of 14
Before After
Fill Model Holes (Pre-Implementation)Step 12 of 14
Fill Model Holes (Post-Implementation)
Create Model SurfaceStep 13 of 14
Delete Surface ErrorsStep 14 of 14
Finalized Surface Model
Post Processing Phase 2:
Post Processing in SolidWorks
Object is Broken Into Mesh Sections
Enable Mold Toolbar
Create Surface from Hole Edges
Pre-Fill Surface Technique
Pre-Fill Surface Application
Fill Surface Application
Pre-Fill Surface Application
Pre-Fill Surface Application
Pre-Fill Surface Application
Fill Surface Application
Pre-Fill Surface Application
Fill Surface Application
Finalize Desired Surface Fills
Perform Digital Render
What are the Benefits?
Save time modeling complex components.
Accurate representation of surfaces impossible to achieve with current solid modeling technology.
Wood grains, bumpy surfaces, curves, grooves, etc.
Allows for better analysis in CAE platforms.
Motion simulation, fluid flow analysis, FEA analysis, etc.
What are the Drawbacks?
High resolution scans mean large files.
Usually post processing required.
Requires high end technology
RAM RAM limits number of data points that can be created.
Processor Speed Determines how long it will take to create surface generation.
Questions?