ABF MFG Group Inc

Brake Press

Brake Press Punches

  • STANDARD PUNCH
  • ACUTE PUNCH
  • NARROW PUNCH
  • GOOSENECK PUNCH
  • SASH PUNCH

The Most Common Punch

Standard punch is the most common bit of brake press tooling. It is used for air bending blunt corners or bottoming 90 degree ones. The standard punch has quite a stocky build, so it is able to take high loads needed for thicker metals or longer bending lines

A Punch For Sharp Corners

Acute punch is generally used to bend angles between 30°- 60°. Again, the die’s thickness allows larger forces, so it is suitable for thicker materials. It’s also used to produce 30° angles before hemming. Then, the acute punch is switched for a hemming/flattening punch to finish the job.

Meant For Tight Spaces

In essence, the narrow punch does the same job as a standard punch. The need for such a tool arises when there’s not much room for executing the final bend. In the example above you can see how the width of the die plays an important role.

Your Friend For Making Channels

The gooseneck punch is used for your U-profiles. Therefore, it is a highly utilised tool but one has to understand the limitations.

A lot of people want to make U-profiles that have both of the sides high, it is only possible to an extent. The punch widens towards the top and ends with a U-turn. So a wider base allows higher sides but there is still a limitation set by the punch’s shape.

Also, it is not as strong as your standard punch. Although it is quite sturdy, the force line is not supported for its way onto the workpiece.

The sash punch is a little like a gooseneck punch – it makes bending around a corner possible. But it makes it possible so that there are angles on both sides of the bend. 

Brake Press Dies

  • 1V DIE
  • 2V DIE
  • MULTI V BRAKE PRESS DIE
  • ROTARY DIE
  • HEMMING DIE
  • OFFSET PUNCH AND DIE
  • URETHANE DIE

1V die or a single V brake press die is the most common type of die. It has a single groove that is suitable for certain angles and radii. If you need several different operations on one sheet, retooling is necessary if air bending doesn’t give enough flexibility.

2V dies have two successive grooves. Thus, it allows continuous work without retooling, if a sheet has many similar bends that still have different tooling requirements. The grooves are close to the sides, making short flanges possible. The grooves have different widths and may have different angles as well.
These are also known as brake press multi V dies. It has 4 different grooves on each side, meant for a variety of radii and material thicknesses. Still, you have to rotate the die to use another groove. Another downside is that the groove is in the middle and the sides are not that short. Thus, it is not always suitable for short flange bending. Still a very good addition to your brake press tooling inventory as it provides a lot of flexibility in one tool.
Rotary dies allow similar bending capabilities to regular V bending but without damaging the material. The rotating inserts decrease friction – the material slides on the die surface instead of scraping along. Also, it leaves no marks like the the V die does.

It is for finishing the acute angle bends by flattening.

Those come as a set. It’s something that makes successive bending that much faster as they can be done in one operation. It also ensures that the bends are parallel as there is no room for dislocations.
Another way to bend without leaving marks. The dies often have holes in them to allow easier force exertion in the wanted direction. Although it may be less accurate, it is still a good alternative when air bending because of the final surface quality.

Brake Press Tooling Length

There are standard lengths for both punches and dies. At first, it may seem something that an engineer really doesn’t have to know. That is not quite true though. Let’s say you have a 2000 mm metal sheet that has many small flanges or ears that need bending.

Now, you have made cutouts, so the press operator can bend those without touching the surrounding sheet. But your cutouts are 28 mm. Maybe you should think twice about the length of these. And for that, it is useful to know the standard lengths.

  • STANDARD LENGTHS FOR BRAKE PRESS DIES
  • 835; 415; 370; 200; 100; 50; 40; 20; 15; 10 mm
  • Standard lengths for brake press punches:
  • 835; 415; 370; 100; 50; 40; 20; 15; 10 mm

Industries that use Brake Press

Brake press machines are mostly used in the automotive and aerospace industries, and in any application that uses metal housings or cabinets.
Industrial
Automotive

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