Bending

• Uses of press brake die: make seams between 2 sheets of metal and hemming sheet to make it safe to handle by the edges.
• Most common die used in press brake: ‘v’ shapes, 90 degrees and radius.
• Difference between press forming and bending: bending does not usually combine any punching or trimming.
• Type of production: one-off production or large-scale batch production.
• METHOD

  1)   Clamp the stock metal between a matching punch and die.

  2)  Hydraulic, pneumatic or mechanical , press brake holds the metal sheet or plate and lowers the punch to bend the material into shape.

  3) The punch is raised and the part is removed from the machine.
• Advantages of using a press brake: can be automated, high accuracy, repeatability, speed, cost effective, no need for skilled labour, versatility (can produce different products).
• Disadvantages of using a press brake: expensive equipment, limited range of materials that can be bent, requires maintenance, needs space, cannot form complex shapes.
• What component makes the modern press more accurate?

  Back gauge

   
• What are the benefits of back gauge device?

  -          accurately positions the piece of metal.

  -          can be controlled by a computer so it can be repeatedly bent for more complex shapes.
• How are modern press brakes different?

  Modern press brakes use a device known as a back gauge to accurately position the piece of metal. The back gauge can be controlled by a computer so it can be repeatedly bent for more complex shapes.
• A disadvantage of using a CNC bender compared to a manual one is its initial setup time, where programming takes longer but once set up, production speeds are faster.
• CNC machines have a higher level of precision than manually operated ones due to their ability to control the angle at which the metal is bent with greater accuracy.
• CNC machines have an advantage over manual ones because they can bend parts with greater precision and consistency due to their ability to control the force applied during bending.
• The advantages of using a hydraulic press include higher pressure than mechanical presses, lower operating costs, and less wear on components.
• Hydraulic presses require less energy per unit of work done compared to pneumatic or electrically operated systems.
• Disadvantages of using a hydraulic press include the potential for leaks and damage if not properly maintained, and the need for specialized training to operate them safely.