Salvagnini P4X Panel Bender

A press brake uses a top punch and bottom die with the part held manually or by a backgauge system. For each bend, the operator positions the part, actuates the press, then repositions for the next bend. On a 6-bend box, this requires 6 operator positioning steps plus 6 press actuations - skilled operator cycle: 2-3 minutes per box. A panel bender like the P4X uses a different mechanism: an automatic blank repositioner positions the flat blank on the machine table, and bending blades (upper and lower) fold the panel edges without the operator touching the part between bends. For the same 6-bend box: the P4X repositions automatically between all 6 bends with no operator touch - cycle time: 20-45 seconds per box. At high volume (500 boxes/shift), the P4X produces in one shift what would take 4-6 press brake operators.

MAC3.0 is Salvagnini's automatic part programming system that generates the complete bending sequence from DXF part geometry without manual programming. Workflow: import the DXF flat pattern; MAC3.0 analyzes the geometry, determines the bend lines, calculates the bend sequence to avoid collisions and minimize blank repositioning moves, and generates the CNC program. For standard box and panel geometries, programming takes 5-15 minutes. For complex parts, MAC3.0 may require operator review and adjustment of the proposed bend sequence. MAC3.0 includes material-specific bend parameter libraries for common steel, stainless, and aluminum alloys with springback compensation values for each material/thickness combination.

P4X limitations: (1) Thickness above 3.0 mm steel or 4.0 mm aluminum - heavy gauge requires press brake; (2) Parts with flanges taller than approximately 250 mm - the panel bender blade geometry limits maximum flange height; (3) Parts requiring complex progressive die-type operations (embossing, drawing, coining) - P4X is bending only; (4) Tubular or round cross-section forming - P4X is for flat blank bending to angular shapes; (5) Parts with very tight inside radius (less than 0.5x material thickness) - panel bender achieves larger radii than air bending on a press brake with specialty tooling. For parts outside these limits, press brake or dedicated forming equipment is required.

The P4X receives flat blanks from the upstream cutting operation (laser, punch, or plasma). Integration levels: (1) Manual feed - operator stacks cut blanks on an input conveyor and the P4X picks from the stack; (2) Automated conveyor link - the Salvagnini or third-party automated conveyor transfers blanks from the laser or punch press output directly to the P4X input; (3) Full FMS (Flexible Manufacturing System) - Salvagnini S4Xe FMS integrates laser cutting, punch press, panel bender, and storage in a single automated cell with parts routing via overhead crane or conveyor. For shops with high mixed-product volume, the FMS integration eliminates batch transfers between operations and enables single-piece flow from raw sheet to finished bent panel.

Standard 4-side electrical enclosure (400 x 300 x 200 mm, 1.5 mm mild steel, 8 bends): P4X cycle time approximately 30-45 seconds including blank repositioning. Output: 80-120 enclosures/hour from one machine with one operator. Press brake comparison on same part: 90-120 seconds per part with experienced operator = 30-40 parts/hour. P4X throughput advantage: 2.5-3x for this geometry. For a 6-side enclosure requiring a separate top and bottom bending: add a second pass or a second P4X in line. At 120 enclosures/hour x 2 shifts x 250 days: 480,000 enclosures per year from one P4X - a throughput level requiring 3-4 press brake operators to match.