surfacingtricksforsolidmodeling 110227120311-phpapp02
TRANSCRIPT
Surface Modeling for Solid ModelersJordan Tadic, Application Engineer
3DVision Technologies
Download most up-to-date presentation @ 3dvision.com/SWWPresentations(case sensitive)
Jordan’s Background
• BS in Mechanical Engineering (00-04)Case Western Reserve UniversityCleveland, OH
• Automation Engineer (04-08)Atlantic Tool & DieStrongsville, OH
• Application Engineer (08-Present)3DVision TechnologiesIndependence, OH
• SolidWorks Certifications:CSWE, CSWP, Surfacing, Sheet Metal, Weldments,Instructor, Support Technician, WPDM, 3DVIA Composer
Why Surfaces?
vs.
Why Surfaces?
Solid models need to follow these rules:
1. Every edge must be a boundary between exactly two faces.
2. Must always be a ‘water-tight’ volume.
Why Surfaces?
Surfaces provide design flexibility:
• Create geometry one surface at a time rather than one chunk at a time.
• Solid modeling tools are simply ‘automated surfacing tools’.
shell = delete face + thicken
Basic Surface Modeling Workflow
1. Build Surfaces
2. Extend/Trim Surfaces
3. Knit/Form Solid
Solids to Surfaces & Surfaces to Solids
Solids to Surfaces:
1. Copy (Offset) Surface
2. Delete Face
3. Knit Surface
Surfaces to Solids:
4. Knit Surface & Try to Form Solid
5. Thicken & Create Solid from Enclosed Volume
solid
copy surface
delete face
knit surfaces
thicken
Bag of Surfacing Tricks
• Fixing/Modifying imported geometry Simplify imported geometry – (Delete & Patch)
Repair/Modify imported geometry – (Extrude surface, Replace face)
Repair sheet metal import – (Copy surface, Face fillet, Thicken)
• Overcoming Solid Modeling Challenges Extrude offset from multiple surfaces – (Knit surface)
Extending countersinks – (Copy surface, Extend surface, Cut with surface)
Extrude/Cut normal to curved surface – (Split line, Copy surface, Thicken cut)
Complex variable radius fillets – (Split line, Face fillet with hold line)
Complex ruffled surfaces – (Revolved surface, Split line, Delete face, Surface loft)
Simplifying Imported Geometry – Delete & Patch
Using the ‘Delete Face’ command with the ‘Delete and Patch’ option selected will delete the selected faces and extend the surrounding faces to patch the gap.
Modifying/Repairing Imported Geometry – Replace Face
Checking Imported Sheet Metal Part File
• Golden sheet metal rules:1. Must be uniform thickness throughout the entire part
2. All bent surfaces must either be cylindrical or conical
• Check to see if bends are cylindrical/conical: Cut a section normal to the bend axis, click on the arc, and check for radius measurement
• Check to see if flat faces are actually flat: Click on “flat” face, and check for “Sketch” icon
• Check thickness using measure tool
• RMB > ‘Select Tangency’
Repairing Imported Sheet Metal Parts
import delete & patch copy surface delete body
delete face extend / untrim face fillet thicken
insert bends & flatten
Extrude Offset from Multiple Surfaces – Knit Surface
knit surface
extrude offset from surfacetranslate ON
extrude offset from surfacetranslate OFF
*or (in 2011), you can create the same result by using a split line and an extrusion off the 3D faces.
Extending Countersinks – Extend Surface
hole wizard copy surface
extend surface cut with surface
Extrude/Cut Normal to Curved Surface - Thicken
split line copy surface thicken cut
copy surface thicken
Complex Variable Radius Fillets – Hold Line Face Fillet
split line hold line face fillet copy surfaces
thicken thicken thicken mirror & shell
finishing touches
extrude & draft
Complex Ruffled Surfaces – Lofted Surface
Complex Ruffled Surfaces – Lofted Surface
solid revolve delete face revolve surface project curve
lofted surface knit surface thicken
