METALMAQ manufactures a special tool, to make a “Z” in one fell swoop in delicate Aluminum and designed for a DURMA press brake with Promecam tie (or European tool system).

THE PROBLEM OF THE PIECE

Our client had to make a stamping in the form of a “Z” (two bends at one stroke), but he must do it with two different “wing” dimensions (see attached sketch of the pieces to be made) and it must be bended in 1,2 mm and it is extremely important that the piece is NOT marked in the bending operation, since they are highly visible pieces and are part of a decoration element.

THE SOLUTION

Seen the difficulty in NOT marking the piece and especially the very small “wing” of PART 2 (1,5 m/m), it was decided to make a tool with a presser so that, after being stepped on, the metal sheet would not move when making the “Z” of the short “wing”.

Due to the importance that the piece is NOT marked, as the presser puts a lot of pressure on the aluminum sheet so that it does not have movement during the bending operation, a small block of Polyamide was incorporated, which is a type of plastic that we usually use and gives very good result.

On the other hand, a mobile stop has been installed in the lower part of the special tool, so that the piece can stop there, but it can also move, to adjust the “wing” of 1,5 m/m (PART 2) . This stop is removable so that the 12 m/m “wing” can be made (PART 1). And thus with a small modification done by the operator of the press brake the two parts of the plane seen above can be made (PIECE 1 and PIECE 2).

Vista de la parte inferior del útil especial
View of the lower part of the special tool

THE MANUFACTURING

We manufacture the special tool in an entire length of 2.550 m/m (as required by our client), to make the two types of “Z” requested in one fell swoop, and it has been made of C-50 steel tempered by induction in the working and grinding zones.

The mooring, both of the punch, and of the die of the special tool was made with Promecam / Mebusa mooring (or European tool system), since the press brake DURMA 160Ton/3mts that the customer has is configured in such a way.

RESULT

The pieces resulting from the tests have been perfect and without any kind of bending marks, as can be seen in the attached photographs.

In the following video you can see the tool bending in our test press brake MEBUSA and you can also see the optimal result of the parts folded with it.

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