Amada EW-3622

The D-value system is Amada's approach to automating bend angle accuracy. The control calculates the exact punch depth (D-value) required to achieve a specified bend angle, accounting for material elastic springback, die opening width, punch radius, and material thickness. Instead of bending and measuring repeatedly to find the correct depth, the D-value system achieves the target angle on the first or second bend. The database includes springback compensation values for hundreds of material grades that Amada has characterized in testing, significantly reducing first-article setup time.

Active crowning uses the EW-3622's independent left and right servo drives to compensate for the beam deflection that occurs when press force is applied. In a conventional press brake, the beam bends upward slightly in the center under load — this deflection causes the bend angle to vary across the part length (tighter angle at the ends, more open in the middle). The EW-3622's control monitors ram force and position at both ends and automatically adjusts the left and right positions to maintain uniform punch penetration across the full bending length, resulting in consistent angle without manual crowning table adjustment.

Yes. The EW-3622 bends mild steel, stainless steel, aluminum, and other ductile sheet metals within its tonnage capacity. Stainless steel requires approximately 50-60% more bending force than mild steel of equivalent thickness due to its higher tensile strength and greater springback. The D-value system includes stainless steel springback compensation profiles for common grades (304, 316, 430). Maximum stainless steel capacity depends on thickness and part length but is generally around 3 mm at full working length with the 36-ton capacity.

The EW-3622 uses Amada's standard segmented tooling system, compatible with both Amada's own tooling catalog and industry-standard European-style punch and die tooling from aftermarket suppliers. Segmented tooling allows the press brake to be set up for a specific bending length by combining tool segments rather than using a single long tool, which simplifies setup and reduces tooling inventory requirements. Amada's quick-change tooling system minimizes changeover time between jobs.

The EW-3622 servo-electric drive offers lower energy consumption (draws power only during active bending, not continuously), no hydraulic oil or seal maintenance, better positioning accuracy and repeatability, programmable bending speed profiles, and active crowning through independent drive control. Hydraulic press brakes generally offer higher tonnage per dollar and are often preferred for very heavy structural bending where servo-electric machines become cost-prohibitive at high force levels. For precision fabrication at 36 tons, servo-electric is increasingly the preferred choice.