Precision Tool & Die Stamping

Progressive Die Scrap Strip Layout Calculator

Compute progressive die strip progression pitch, edge scrap allowances (W_edge >= 1.5t), material utilization percentage, carrier ribbon tab geometry, and pilot locating pin diameters.

1. Input Parameters

Blank Part Length along Feed L_p (mm):

Component length in the strip feeding progression direction.

Blank Part Width across Strip W_p (mm):

Component width perpendicular to strip feeding direction.

Strip Material Thickness t (mm):

Coil sheet stock thickness.

Single Part Surface Area A_part (mm²):

Actual net 2D area of finished stamped part.

2. Calculation Results

Progression Pitch (P)

47.7 mm

Total Strip Width (W_strip)

33.4 mm

Material Utilization (η)

53.3%

Rec. Pilot Pin Dia (D_pilot)

3.50 mm

3. Geometric Visualizer

Tooling & Vector Prepress Engineering Notes

Strip Layout Economics: In high-volume progressive stamping (millions of parts/year), a 5% improvement in strip material utilization (η) translates directly into tens of thousands of dollars in coil stock savings. Nesting parts at an angle (interlocking) or utilizing two-row layouts frequently boosts utilization above 75%.

Carrier Ribbon & Web Allowances: Minimum bridge webs between parts must satisfy W_bridge ≥ 1.2 · t (minimum 1.5 mm), and edge margin scrap must satisfy W_edge ≥ 1.5 · t (minimum 2.0 mm) to prevent strip distortion, buckle jamming, and feeding missteps during high-speed press operation (150–800 SPM).