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Surface Modeling for Solid ModelersJordan Tadic, Application Engineer

3DVision Technologies

Download most up-to-date presentation @ 3dvision.com/SWWPresentations(case sensitive)

http://www.3dvision.com/SWWPresentations/http://www.3dvision.com/SWWPresentations/http://www.3dvision.com/SWWPresentations/

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Jordans Background

BS in Mechanical Engineering (00-04)

Case Western Reserve University

Cleveland, OH

Automation Engineer (04-08)

Atlantic Tool & Die

Strongsville, OH

Application Engineer (08-Present)

3DVision Technologies

Independence, OH

SolidWorks Certifications:

CSWE, CSWP, Surfacing, Sheet Metal, Weldments,

Instructor, Support Technician, WPDM, 3DVIA Composer

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Why Surfaces?

vs.

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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.

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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

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Basic Surface Modeling Workflow

1. Build Surfaces

2. Extend/Trim Surfaces

3. Knit/Form Solid

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Solids to Surfaces & Surfaces to Solids

Solids to Surfaces:

1. Copy (Offset) Surface

2. Delete Face

3. Knit Surface

Surfaces to Solids:

1. Knit Surface & Try to Form Solid

2. Thicken & Create Solid fromEnclosed Volume

solid

copy surface

delete face

knit surfaces

thicken

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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)

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Simplifying Imported GeometryDelete & 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.

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Modifying/Repairing Imported GeometryReplace Face

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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

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Repairing Imported Sheet Metal Parts

import delete & patch copy surface delete body

delete face extend / untrim face fillet thicken

insert bends & flatten

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Extrude Offset from Multiple SurfacesKn it Surface

knit surface

extrude offset from surface

translate 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.

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Extending CountersinksExtend Surface

hole wizard copy surface

extend surface cut with surface

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Extrude/Cut Normal to Curved Surface - Thicken

split line copy surface thicken cut

copy surface thicken

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Complex Variable Radius FilletsHold Line Face Fil let

split line hold line face fillet copy surfaces

thicken thicken thicken mirror & shell

finishing touches

extrude & draft

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Complex Ruffled SurfacesLofted Surface

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Complex Ruffled SurfacesLofted Surface

solid revolve delete face revolve surface project curve

lofted surface knit surface thicken

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Questions?

Jordan Tadic

440-425-0114, 235

jtadic@3dvision.com

mailto:jtadic@3dvision.commailto:jtadic@3dvision.com