1. Reverse Engineering Convert STL mesh data to a Solid Edge part model and speed up Product Development.
Restricted © Siemens AG 2016
Realize innovation.

2. Contents Reverse Engineering Working with STL mesh
Analyzing mesh and defining regions
Working with surfaces
Demo
Feedback

3. Reverse Engineering Why Reverse Engineering?
Convert an existing physical part to a virtual 3D model and then alter it to improve the design
Faster new product development
Continuous quality improvement
Customization
Cut down production cost
Why now?
Affordable Hardware
Smaller and Portable
Easy to use

4. Reverse Engineering Our Solution
Solid Edge will focus on extracting surfaces from an STL mesh and convert them to a solid model.
Import and repair mesh
Analyze input mesh geometry
Convert into surfaces
Trim, extend and stitch to create a solid body
Modifying geometry
Adding details
3D Scan
Point Cloud
Convert to Mesh
Mesh Import
Mesh Repair
Identify Regions
Surface Extraction
Surface Extraction
Solid Model

5. Example
Bottle

6. Example
Die

7. Reverse Engineering Tools
Separate install creates a new Reverse Engineering tab in Solid Edge Part document
Import – STL mesh data
Clean-up Mesh by deleting unwanted or intricate mesh and filling gaps to create a water-tight mesh
Identify Regions as planes, cylinders, spheres, B-spline surfaces
Extract Surfaces from regions
Modify – surfaces using trim/extend operations
Stitch – to create a design body

8. Import Import STL mesh data
Import command opens STL file in a Part or Sheetmetal document
Import STL file in active document
Choose file units –
inches mm
meters
Oriented to Base coordinate system
Supports Multiple STL files
Import scanned data from different files

9. Cleanup Mesh Delete Mesh
Unwanted mesh with defects or intricate mesh to make extraction of surfaces easier
Noise during scanning
Intricate details
Symmetric component – delete half mesh
Delete Mesh Facets
2D Box
3D Box
Brush
All
Turn ON for 3D Box

10. Working with Mesh Clean-up Mesh
Repair defects such as gaps and holes in the imported mesh using the Fill Holes command
Identifies holes and gaps automatically
Fill Holes list
Indicates boundaries
Zoom to
Remove
Manual Selection
Select / Fence Select / Select All / Deselect All
Fill Types –
Smooth – Tangent continuous
Flat – Edge continuity
Smooth
Flat
Zoom To
Remove

11. Working with Mesh Automatic Region Identification
Analyzes geometry and automatically detects Planes, Cylinders, Spheres and B-spline Surface geometry
Creates Regions – planes, cylinders, spheres and b-spline surfaces
Each type is applied a unique color
Yellow planes
Cyan cylinders
Red spheres
Magenta b-splines
Sphere
B-Surface
Plane
Cylinder

12. Working with Mesh Manual Region Creation
Geometry like Chamfer, Round may be avoided and created on a model at a later stage. These can be painted manually
Paint tools
Brush
Fill
Color Selection
Eyedropper
Color Palette
Paint as Non-extractable
Regions are created for each color
Adjacent regions with same color merge
Brush
Eye Dropper
Palette
Fill
Non-Extractable

13. Working with Surfaces Extract Surfaces
Reads the color applied to a region and extracts a surfaces
Creates surfaces
Planes for Yellow faces
Cylinders for Cyan faces
Spheres for Red faces
B-Surfaces for Magenta face
Extract
All
Selected
Delete surfaces

14. Working with Surfaces Fit Surfaces
Fit a Plane, Cylinder, Sphere or B-Spline surface in the selected region
Regions not extracted
Regions painted other than Yellow, Cyan, Red or Magenta can be used to fit surfaces
Delete an extracted surface
Fit surface

15. Working with Surfaces Modify Surface Tools
After faces are extracted use modify surfaces commands to extend, trim and stitch surfaces
Intersect
Trim
Extend
Stitch
Convert to Design Body

16. We are listening Feedback from users
Requirement list from inputs received
Orient and position mesh
Smoothen mesh
Display STL wireframe
Measurement of mesh
Lasso/N-side polygon selection
Filter region display based on color
Torus and Cone detection
Paint brush size control
Rounds as non-extractable
Surfacing commands
Section curve
Boundary edge curve
Automatic trim/extend
Automate surface extraction and convert to design body

17. Thank you
siemens.com