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Introduction to Boundary Freeform and Fill Features

Introduction to Boundary Freeform and Fill Features. Mark Biasotti SolidWorks Corporation January 21 st 2008. Agenda. Why – What value do these features add to product design? Advance capabilities - Introduction to SolidWorks Advanced modeling types

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Introduction to Boundary Freeform and Fill Features

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  1. Introduction to BoundaryFreeform and Fill Features Mark BiasottiSolidWorks Corporation January 21st 2008

  2. Agenda • Why – What value do these features add to product design? • Advance capabilities - Introduction to SolidWorks Advanced modeling types • How - Determining use of Loft, Boundary, Fill, Freeform • Focus on Three: • Boundary introduction and examples • Fill introduction and examples • Freeform introduction and examples • Q & A

  3. Further Info • This presentation and example files will be available via download from the SolidWorks Website after the conference concludes.

  4. Why are these surface modeling features important? Why Surfacing verses Solid: • Can not be accomplished in one or a few solid features • Radii features will not suffice; need curve continuous surface connections for a seamless look • In other words: “How in the heck do I model that?”

  5. Why is surface modeling important? • Many products, although they look prismatic, are not.

  6. Curvature • Visual difference between curvature vs. tangent connection of surfaces Regular Fillet Curve Continuous Fillet

  7. Explanation of C0 thru C3 • Surface matching conditions explained C2 Condition – Surface boundaries share Common edge with curvature matching C0 Condition – Surface boundaries share Common edge but no tangency C3 Condition – Surface boundaries share Common edge with curvature matching to greater degree than C2 C1 Condition – Surface boundaries share Common edge with tangency but rate of curvature does not match at boundary

  8. Curve Continuous Equal Curvature – C2 Higher Degree – C3>

  9. An extensive set of modeling tools for complex shapes Loft Shape Sweep C2 Fillets Fill Boundary Planar Extrude FreeForm Revolve Flex Deformed Dome Ruled

  10. Will be discussing Boundary, Fill & Freeform

  11. Which Surface Feature to use? • Dissimilar or multiple profiles/Guides and need it to be solid: Use Loft • Similar profiles but change along length of shape: Use Sweep • Three or five or more boundaries: Use Fill • For high quality surfaces-only and C2 in both directions:Use Boundary • For modifying surfaces dynamically and without sketches:Use FreeForm

  12. Boundary Feature Background • Project started in 2004 for SW 2006 release as a mathematical replacement for Loft but was not ready until 2007 release. • Pro’s • Curve continuous matching in both directions • Unlike Loft, equal influence between first (profile) and second (guide curve) directions. • User controllable Surface Connectors • 1x1 curves can be created. • Additional UV and edge matching control. • Con’s • Surface only feature (no solid feature creation) • Can not do Centerline or Close Loop surfaces etc.

  13. Boundary Introduction Features: • Unlike Loft, there is not influence of curve direction 1 over curve direction 2. • Because of this C2 matching can be applied to all sides. First Direction Second Direction

  14. Boundary Introduction Features: • Can create surfaces with only 1 curve in each direction

  15. Boundary Introduction Features: • Can add connectors in both directions • For extraordinary influence of the surface

  16. Boundary Introduction Features: • No longer need to predefine explicit sketch or compound curves • One 3D sketch can provide all of these solutions

  17. Boundary Introduction Features: • Special Modifiers in the Property manager influence surface and provide different solutions.

  18. Ski Goggle Example

  19. Boundary Feature

  20. 2nd Boundary Feature

  21. Guides have equal influence Guides go to next sharp To Next Sharp Global No edge here Guides go to next edge Influence to Next guide To Next Curve To Next Edge Curve Influence options

  22. Connectors

  23. Fill Feature Background • Introduced to SolidWorks 2001 Useful for creating N sided patches (3 or 5 or more sides) • Only one of it’s kind in the industry • Pros: • Especially useful for “Capping”, complex surface patches and for repairing import surfaces. • Curve Continuous (C2) matching (New for 2007) • Fix Up Boundary does not require closed or contiguous boundary (new for 2007) • Cons: • Can only use one or two Constraint curves • In some cases needs edge matching to control surface

  24. Fill Feature

  25. First Fill Feature (import repair)

  26. Fill Example Samsung Syncmaster 700

  27. Optimized vs. non-Optimized

  28. Freeform Feature Background • Introduced in SolidWorks 2007 to answer customer’s need to have push-pull ability in SolidWorks. • Dynamically pull on surfaces to deform them • Pros: • No need to predefine section or guide curves • Unlike competition, can place control points anywhere on the surface or face not just an evenly spaced grid of points. Only one of it’s kind in the industry • Especially useful for highly organic shapes • Can move face boundaries and re-heal automatically. • Cons: • Currently can only do four-side surfaces or faces

  29. Freeform Introduction Workflow • Face Settings – identify surface or face to modify. Optionally assign symmetry (if applicable) • Control Curves – create control curves or optionally assign matching conditions on boundary tags in SolidWorks Window • Control Points – create Control points on previous assigned curve or on existing boundaries if they are moveable. • Display – optionally control visualization of mesh, curvature etc.

  30. Freeform Introduction Boundary Conditions • Contact – Face maintains contact but direction at edge can be changed.

  31. Freeform Introduction Boundary Conditions • Tangent – Face maintains tangency

  32. Freeform Introduction Boundary Conditions • Curvature

  33. Freeform Introduction Boundary Conditions • Moveable verses Moveable/Tangent

  34. Freeform Introduction • Triad Control • Global – Triad aligns with Global vectors • Surface – Triad aligns normal to surface (before move) • Curve – Triad aligns with normal of curve (before move) curve

  35. FreeForm Introduction • To Display Curvature for Control Curves – RMB on the curve and Click “Show Curvature.

  36. FreeForm Introduction • To show curvature on the mesh U/V’s – use the options in the property manager

  37. First Freeform example

  38. Second Freeform example

  39. More Questions • Visit the SolidWorks website at www.solidworks.com to learn more about SolidWorks and its product offerings. • Contact me at mbiasotti@solidworks.com • Contact your local SolidWorks reseller for information on pricing and training. To find a reseller in your area call: 800-693-9000 (US and Canada) or +1-978-371-5011 (Outside the US and Canada). • Watch your email for news about future 3D CAD and analysis online seminars, or visit our website at: www.solidworks.com/onlineseminars

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