Sheet Metal Parts Bending Forming Professional Solution

　　Sheet metal bending is a plastic forming process that uses a press brake and dedicated bending tool to apply pressure to metal sheets, causing plastic deformation at specific angles and radii.

　　It is one of the most critical processes for making boxes, enclosures, brackets, chassis, shells, and structural components.

　　Common Materials

　　Carbon steel / SPCC

　　Stainless steel 304 / 316

　　Aluminum alloy 5052 / 6061

　　Galvanized steel / SECC

　　Copper / Brass

　　Typical Process Flow

　　Material blanking (laser / CNC turret punch / shearing)

　　Deburring & edge treatment

　　Programming & tool setup on CNC press brake

　　Bending forming

　　Inspection (angle, dimension, flatness)

　　Surface treatment (painting, plating, powder coating)

　　Assembly & packaging

　　Core Technical Advantages

　　1. High Precision

　　Bending angle accuracy: ±0.5°

　　Dimensional tolerance: ±0.1 mm

　　Suitable for high-precision cabinets, electronic enclosures, medical devices

　　2. Stable & Consistent Quality

　　CNC bending ensures batch consistency

　　No deformation, no cracking, no spring-back deviation

　　3. High Efficiency & Flexibility

　　Quick mold change

　　Supports small-batch, multi-variety production

　　Ideal for customized sheet metal parts

　　4. Strong Structural Strength

　　Bending forms integrated structures

　　Higher strength than welded or assembled parts

　　Key Technical Points

　　Spring-back Compensation

　　Metal rebounds after bending; we use spring-back calculation & pre-compensation to ensure final angle accuracy.

　　Minimum Inner Radius

　　Depends on material thickness and hardness:

　　Generally: R ≥ 0.5 × sheet thickness

　　Soft materials: smaller radius

　　Hard materials: larger radius to avoid cracking

　　Bending Direction

　　Bending along the transverse direction of the sheet rolling grain to prevent cracks.

　　Hole-to-Bend Distance

　　Too close will cause hole deformation.

　　Standard safety distance:

　　≥ 2 × sheet thickness + bending radius

　　Common Defects & Solutions

　　Angle deviation → CNC compensation + real-time correction

　　Cracking → adjust radius, optimize grain direction

　　Surface scratch → use polyurethane tools, protective film

　　Dimension error → fixture positioning + back gauge adjustment

　　Typical Applications

　　Electronic & electrical enclosures

　　Server chassis & rack mount parts

　　Automotive sheet metal brackets

　　Medical device housings

　　Kitchen & sanitary hardware

　　Industrial equipment shells & frames

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