modeling a sheetmetal part (gsd)
TRANSCRIPT
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MODELING A SHEETMETAL
PART (GSD)BY: JONATHAN MIRELES, RAISTLIN WELKER, KAAN KURT
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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
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INITIAL CHECKLIST
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INITIAL CHECKLIST
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INITIAL CHECKLIST
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INITIAL CHECKLIST
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Side Note
PART REF: 74A200988-2001
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
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INITIAL CHECKLIST10in
10in
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INITIAL CHECKLIST
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INITIAL CHECKLIST
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PART REF: 74A200988-2001
CREATE BASE
1. GENERATIVE SHAPE DESIGN WORKBENCH
2. ESSENTIALS TAB
3. “FILL” TOOL Step 2
Step 3
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PART REF: 74A200988-2001
“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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
EXTRUDE TOOL
1. BASED OFF A LINE
2. ANGLED BASED ON DIRECTION
3. EASILY MANIPULATABLE
Step 1Step 2
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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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
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Side Note
PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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)
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Flanged
Hole
Bead
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Side Note
PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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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PART REF: 74A200988-2001
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
PART REF: 74A200966-2001
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PART REF: 74A200988-2001
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
PART REF: 74A200966-2001
Step 5 Step 6Step 7
Step 8
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PART REF: 74A200988-2001
CREATE BEADS
9. JOIN SURFACES TOGETHER
10. EDGE FILLET BOTTOM EDGE, BEND RADIUS VALUE
EDGE FILLET TOP EDGE
PART REF: 74A200966-2001PART REF: 74A200966-2001
Step 9
Step 10
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PART REF: 74A200988-2001
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
PART REF: 74A200966-2001
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Side Note
PART REF: 74A200988-2001
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
PART REF: 74A200966-2001
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PART REF: 74A200988-2001
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
PART REF: 74A200966-2001
Step 1
Step 2 Step 3
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THE END