Bending Specifications

Bending Specifications

Normal Bending
No. Standard Part Standard Value Example
1 Bend angle tolerance
  • Plate Thickness ≤10.0 mm: ±1.0°
  • Plate Thickness >10.0 mm: ±1.5°
Example
2 Inner radius (r) Plate thickness (reference value)
3 Outer radius (R) R = plate thickness × 2 (reference value)
R-bend shape(FR bending)
No. Standard Part Standard Value Example
1 Bend angle tolerance
  • ±2.0°
Example
2 Inner R Modeling dimension (Reference value)
3 Outer R Inner R+Plate thickness (Reference value)

Protrusions from Bending

Standard Value Example
As shown in the right hand example, bulging/protrusions of about 15% of the plate thickness can occur on each side. Example

Defects Caused by Bending

Standard ValueExample
As shown in the right hand example, defects have occurred in the bent die.Example
Since it is processed as FR bending (feed bending), die marks will be left on the R bending part.
■Without surface treatment (EN AW−5052 equiv.)
Inner bendOuter bend
■Paint
Inner bendOuter bend