Glossary

Shearing

Straight-line cutting of sheet between a moving blade and a fixed blade — how a full sheet becomes blanks before any forming starts.

Reviewed by Tom, Senior Process Engineer·Dongguan source factory · 11+ years in precision sheet metal
sheet metal bending process — shearing definition
Short answer

Shearing cuts sheet in a straight line between two blades, one fixed and one driven, with no chips and no kerf — the blades simply shear the material apart. It is the first operation in most fabricated work: full sheets come in, and shearing turns them into square blanks sized for the parts nested on them.

What Shearing means

Shearing cuts sheet in a straight line between two blades, one fixed and one driven, with no chips and no kerf — the blades simply shear the material apart. It is the first operation in most fabricated work: full sheets come in, and shearing turns them into square blanks sized for the parts nested on them.

Why it matters on the shop floor

The cut edge carries a characteristic fracture band and a slight burr, and the cut line is straight only — contours need laser or punching. What shearing buys is speed and material discipline: it is fast, it is cheap, and it decides how cleanly the rest of the nest fits the sheet.

What to remember

  • Straight cuts only; every contour goes to laser or punching.
  • Edge quality carries a roll-over and fracture band — critical edges get finished later.
  • Blade gap is set per material and thickness; wrong gap means a heavy burr.

Related terms

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