MODELING A SHEETMETAL

PART (GSD)BY: JONATHAN MIRELES, RAISTLIN WELKER, KAAN KURT

THE TWO WORKBENCHES TO USE FOR SHEETMETAL

PARTS

Sheetmetal Hydroformed1. REGULAR FLANGE

2. JOGGLED FLANGE

3. JOGGLED WEB

4. FLANGE ALONG A SURFACE

5. VARIABLE DEGREE OF BEND

6. VARIABLE BEND RADIUS

7. ODD FLANGE PROFILES

GSD

INITIAL CHECKLIST

INITIAL CHECKLIST

INITIAL CHECKLIST

INITIAL CHECKLIST

Side Note

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ADD YOUR DRAWING

1. CREATE A 3DE DRAFT SHEET

2. CREATE 10X10, OR 5X5, GRIDLINES

3. GO TO THE ANNOTATION TAB WHEN IN THE DRAFTING WORKBENCH

4. SELECT “INSERT PICTURE” & STRETCH IT TO THE GRIDLINES

Step 2 Step 3

Ste

p 4

This example shows 10x10

DRAWING IS NOT SCALED CORRECTLY

INITIAL CHECKLIST10in

10in

INITIAL CHECKLIST

INITIAL CHECKLIST

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CREATE BASE

1. GENERATIVE SHAPE DESIGN WORKBENCH

2. ESSENTIALS TAB

3. “FILL” TOOL Step 2

Step 3

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“FILL” TOOL

1. CREATED FROM THE INITIAL PROFILE SKETCH

2. CREATES A SURFACE FROM A CLOSED PROFILE

3. ACTS LIKE A WEB FROM THE HYROFORMED WORKBENCH

Initial

profile

*Part will look like this*Step1

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CREATE FLANGES

• CREATE SURFACES IF NECESSARY WITH PROPER ANGLE(S) USING “SWEEP” TOOL OR “EXTRUDE” TOOL

• OFFSET SURFACE(S) FOR FLANGES

• OFFSET AGAIN FOR JOGGLES

• SPLIT FOR JOGGLES USING PLANES

• MULTISECTION BETWEEN SPLITS FOR JOGGLES

• DIMENSION PROFILE AND EXTRUDE

• SPLIT COMPLETED SURFACES USING EXTRUDED PROFILE

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EXTRUDE TOOL

1. BASED OFF A LINE

2. ANGLED BASED ON DIRECTION

3. EASILY MANIPULATABLE

Step 1Step 2

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SWEEP TOOL

1. BASED OFF AN INITIAL SURFACE

2. CREATION OF ANGLED SURFACES

3. ANGLE = 90° - ANGLED CALLED

Step 1 Step 2

Step 3

ANGLE ≠ 90°

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OFFSET SURFACES

1. INITIAL OFFSET FOR SKIN PANEL

2. OFFSET AGAIN FOR JOGGLE(S)

3. JOGGLE OFFSETS BASED ON INITIAL OFFSET

Step 1 Step 2

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SPLIT OFFSETS USING PLANES

1. JOGGLE DIMENSIONS BASED ON DRAWING SHEET

2. INITIAL PLANE: PICK A LINE AND A POINT ON BASE

3. OFFSET OFF INITIAL PLANE

4. USE “SPLIT” TOOL AND SPLIT PER PLANES

Step 1 Step 2 Step 3

Step 4

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MULTISECTION BETWEEN SPLITS FOR JOGGLES

1. COMPUTES A SURFACE BETWEEN TWO EDGES

2. ARROWS GOING IN THE SAME DIRECTION

3. JOIN SURFACES TOGETHER

4. PLACE FILLETS ON HARD EDGES AFTER JOINING

Steps 1 & 2Step 3

Step 4

Side Note

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INSERT CUTOUTS (IF NEEDED)

THERE ARE 2 METHODS FOR CREATING CUTOUTS

• METHOD 1 – (LARGE CURVATURE)

• METHOD 2 – (SMALL CURVATURE)

THIS EXAMPLE

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DIMENSION PROFILE AND EXTRUDE1. TRACE AND DIMENSION PROFILE IN

DRAWING SHEET

2. COPY AND PASTE TRACE INTO SPACE

3. DIMENSION PROFILE

4. EXTRUDE DIMENSIONED PROFILE

Step 1

Step 2 Step 3

Step 4

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SPLIT COMPLETED SURFACES USING EXTRUDED

PROFILE AND FILL

1. SPLIT FLANGES BY EXTRUDED PROFILE

2. SPLIT FLANGES BY FILL, OR INTERSECTIONS

Step 1 Step 2

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SHAPE FILLET FLANGES INTO BASE

• SELECT A FLANGE AND BASE

• ARROW POINTING INWARD, ARROW POINTING UPWARD

• ADD BEND RADIUS VALUE INTO SHAPE FILLET

• REPEAT FOR OTHER FLANGE(S)

Flanged

Hole

Bead

Side Note

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STANDARDS OF BEADS AND FLANGED HOLES

• Parameters of flanged holes and beads

can be identified in documents that are

project specific.

• Some projects have standards and

some do not.

• Talk with your project manager to see if

you have these standards or not.

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CREATE FLANGED HOLES

1. DIMENSION CENTER POINT

2. DIMENSION DIAMETERS

3. SKETCH BIG DIAMETER ON INITIAL SKETCH PLANE

4. OFFSET PLANE FROM INITIAL SKETCH PLANE BY VALUE GIVEN

Step 1 Step 2Step 3

Step 4

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CREATE FLANGED HOLES

5. USE THE SWEEP TOOL

SWEEP BETWEEN TWO LIMITS

LENGTH 1 & 2 SHOULD BE ZERO

6. SPLIT FINAL SHAPE FILLET BY SWEEP

7. JOIN TWO TOGETHER

8. ADD EDGE FILLET WITH BEND RADIUS ON THE JOIN

Step 5 Step 6 Step 7

Step 8

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CREATE BEADS1. SKETCH USING ELONGATED HOLE

DIMENSION SKETCH

2. IMPORT INTO SPACE ON INITIAL SKETCH PLANE

DIMENSION SKETCH

3. OFFSET PLANE FROM INITIAL SKETCH PLANE

4. SKETCH ANOTHER ELONGATED HOLE

CREATE CONCENTRICITY WITH RADI’S

Step 1

Step 2 Step 3

Step 4

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CREATE BEADS

5. USE THE SWEEP TOOL

SWEEP BETWEEN TWO LIMITS

LENGTH 1 & 2 SHOULD BE ZERO

6. FILL TOP OPENING

7. JOIN TWO TOGETHER

8. SPLIT SURFACE BY JOIN

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Step 5 Step 6Step 7

Step 8

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CREATE BEADS

9. JOIN SURFACES TOGETHER

10. EDGE FILLET BOTTOM EDGE, BEND RADIUS VALUE

EDGE FILLET TOP EDGE

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Step 9

Step 10

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THICKEN SURFACE (SOLID)• ALLOWS FOR SURFACE TO BE A SOLID

1. PART DESIGN WORKBENCH

ESSENTIALS TAB

2. FIRST OFFSET = PART THICKNESS

SECOND OFFSET = 0

3. ARROWS GO INWARD

Step 1

Step 2

Step 3

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Side Note

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THICK SURFACE

GSD VS. PART DESIGN

Thick surface in part design allows CATIA

to recognize it as a solid model.

Will show up this light grey color.

Thick surface in GSD will not allow CATIA

to recognize it as a solid model.

Will show up in this dark grey color.

PD workbench

GSD

workbench

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ADD HOLES FROM REF HOLE POINTS (SOLID)

1. PART DESIGN WORKBENCH

ESSENTIALS TAB

HOLE TOOL

2. DIAMETER = VALUE FROM DRAWING

3. SELECT REF POINT

EXTENSION TAB

UP TO NEXT

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Step 1

Step 2 Step 3

THE END