Roll Forming Post-Shearing Blades vs. Standard Shear Blades: Key Differences

Edge Geometry

Corrugated Profiling: Custom-ground to match the specific wave shape (ribs and valleys) of the formed panel.

Straight Edge: Perfectly linear and flat cutting edge on both upper and lower blades.

Target Material

Formed Profiles: Roll-formed steel sheets, such as trapezoidal cladding, corrugated panels, or step tiles.

Flat Sheets: Unformed, flat metal sheets or coils of various gauges.

Cutting Mechanism

Profile-Meshing: The upper blade profile locks into the lower blade cavity, shearing all ribs simultaneously to prevent profile collapsing.

Guillotine / Scissor Action: The blade penetrates the flat sheet along a single linear stroke path.

Bevel Angle

Acute Angle: Ground at an acute relief angle to compensate for the curved stroke path, reducing friction and tool chipping.

90° Square Edge: Four-edge usable straight cutting edge design requiring no complex angular compensation.

Drive & Integration

Hydraulic Station / Inline: Synced with the roll former’s PLC for automatic, inline, cut-to-length operation.

Independent Drive: Standalone mechanical or hydraulic machinery, operated manually or with an external feeder.

Workstation Setup

Inline Attachment: Mounted directly at the exit end of the roll forming line as a functional component of the mill.

Standalone Machine: Placed independently on the shop floor for raw sheet blanking and preparation.