Metal Plate Press Brake Bending Machine Photo
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The following 4 points are some common problems and corresponding solutions in Metal Plate Press Brake working, Wuxi Shearchy summarized for you.

Common Problems and Solutions of Sheet Metal Bending

Case 1: bend side is straight and the dimensions are unstable

Reason:

  • The design process did not arrange the pressure line or pre-bending process
  • Pressure of the plate is not enough
  • Convex mold fillet wear asymmetry or bend force uneven
  • Its height size is too small

Solution:

  • Design pressure line or pre-bend process in CNC hydraulic press brake working
  • Increase the press pressure
  • Convex mold clearance uniform and fillet polishing
  • Height dimensions cannot be less than the minimum limit size

Case 2: outer surface of work piece is seriously scratched after metal plate press brake forming

Reason:

  • Raw material surface is not smooth
  • The pressbrake bend radius of press brake punch is too small
  • Hydraulic press brakes bending gap too small

Solution:

  • Improve the smoothness of the upper and lower dies
  • Increase the bending radius of brake press punch
  • Also, adjust plate bend clearance

Case 3: uneven bottom of bending machine dies

Reason:

  • Firstly, uneven material
  • Secondly, small contact area between roof and material or insufficient jacking force
  • Thirdly, there is no ejector in the die

Solution:

  • Leveling metal materials
  • Adjust the jacking device to increase the jacking force
  • Or, add jacking device or correction
  • Addition and shaping process

Case 4: deformation in width direction of sheet metal after bending

In detail, the curved part has bow deflection in the width.

Reason:

  • Torsion and deflection are caused due to the difference of drawing and shrinkage in the width direction of the part

Solution:

  • Increase bender pressure
  • Add correction process
  • Also, ensure that there is a certain angle between material grain direction and metal plate press brake bending direction

SHEARCHY official website has more information about CNC bending machine, Plate shearing machine, Metal rolling machine. Feel free to contact us with your demands!