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The programmable motion profile is the servo press's greatest advantage. Here's how to optimize it for each material.
## Understanding the Motion Profile
Key zones: approach (fast), pre-contact (slow), forming (controlled), dwell (optional), return (fast). Be fast where speed doesn't matter and slow where it does.
## Mild Steel (SPCC, DC01)
Use moderate forming speed (100-200 mm/s) for blanking. For drawing, slow to 50-80 mm/s at initial contact to prevent wrinkling.
## High-Strength Steel (HSS, AHSS)
Use slower forming speeds (30-60 mm/s) to reduce dynamic impact loads. A short dwell (0.1-0.3s) at BDC helps springback recovery. Avoid high-speed impact — it causes micro-cracking in AHSS grades above 780 MPa.
## Aluminum
Optimal forming speed: 20-50 mm/s for 5xxx series, 30-80 mm/s for 3xxx series. Use pendulum motion for progressive die operations.
## Copper and Brass
Use dwell at BDC (0.2-0.5s) for precision parts. For fine blanking of copper contacts, slow to 5-15 mm/s in the cutting zone.
## Stainless Steel
Use the slowest practical forming speed (20-40 mm/s). Lubrication is critical — use EP (extreme pressure) lubricant.
## Optimization Process
1. Start with manufacturer's recommended profile
2. Run 10 parts, measure dimensions and check surface quality
3. Adjust forming speed ±20% and compare results
4. Add/remove dwell and measure springback
5. Document the optimized profile in the die setup sheet