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MetalForming Magazine
Die Design and Simula4on Experience
OEM and Tier Supplier of Large
Progressive, Transfer and Tandem Line Stamping
Dies
Dies are designed and engineered in
house with a focus on the use of advanced
engineering and design tools to assure process feasibility and
manufacturability
SoDware
• Die Design SoDware is NX • Simula4on SoDware is eta/DYNAFORM • Inspec4on SoDware is Polyworks
Process Engineering • Develop die opera4on process for manufacturing the product.
• Develop simula4on models using NX • Run formability analysis using eta/DYNAFORM • Once passing formability is achieved develop trim lines using eta/DYNAFORM Trim Line Development
• Once trim is op4mized develop compensa4on model to within +/-‐ 1.0mm using eta/DYNAFORM Spring Back Compensa4on
• Refresh Dynaform surface output in NX • Build as simulated
Simula4on Work Flow
First Panel Review
• ADer spoUng and die func4on tes4ng perform first panel review
• Review first panel at tryout to determine if simula4on correlates to actual result
• Perform tryout material test and re run simula4on using actual material test results
• Compare as built to actual material to actual tryout results
Case Study Part Name: Roof Bow Material Type: 980T/700Y Gauge: 1.2mm thick
Original Cut Sheet
C/lL Sec4on
Sec4on A
Original Cut Sheet C/L Sec4on
13mm of Over Crown
Radii Reduced from product shown in
White
Blue Part: Product Surface Red Part: Ini4al Cut Surface
Original Cut Sheet Sec4on A
0mm Over Bend at the end of the
part
No4ce sheet is parallel to the part
Final Cut Sheet
C/lL Sec4on
Sec4on A
Final Cut Sheet C/L Sec4on
Radii Reduced from product shown in
White
Blue Part: Product Surface Green Part: Final Die Face as Shipped
13mm of Over Crown
Final Cut Sheet Sec4on A
5mm Down Over Bend at the end of the part
No4ce sheet is no longer
parallel to the part
Overbend
Blue Part: Product Surface Red Part: Ini4al Cut Surface Green Part: Final Die Face as Shipped
Sec4on cut at Center of Product.
No4ce Side wall shiD in Final Cut Sheet
Final Part Scan
Final Part Scan to Product
C/L Sec4on
Sec4on A
Blue Part is Final Part Scan White Part is Product surface
Final Part Scan to Product C/L Sec4on
Blue Part is Final Part Scan White Part is Product surface
Final Part Scan to Product Sec4on A
Blue Part is Final Part Scan White Part is Product surface
Morph History
Tolerance +/-‐0.5mm
Largest Error 2.79mm
Morph History
Morph History
Includes Op 20 Hand Morph
Final Inspec4on as Shipped
Final Part Surface Scan to Product
Surface Tolerance +/-‐ 0.5mm within boxes
Elsewhere +/-‐0.7mm
Final Part Surface Scan to Product
Surface Tolerance +/-‐ 0.5mm
within boxes Elsewhere +/-‐0.7mm
Final Part Trim Scan to Product
Trim Line Tolerance = +/-‐ 1.5mm
Job Summary Report
Comparison of Spring Back Using Different Forming Methods for 980mpa Material
Draw V Crash Form 980T/550Y-‐DP
Total Devia4on +2.97 to -‐3.47 [6.44mm] Total Devia4on +2.68 to -‐6.47 [9.15mm]
Draw V Crash Form 980T/550Y-‐DP
Draw shows no wrinkles
Crash Form shows some wrinkles
Thank You !