Hinge tools.

The previous article focused on the case history of a special production: a tool to form ribs. This article is going to keep focusing on special tools, specifically, hinge tools.

What is hinge forming?

Hinge forming is a delicate operation, through which sheet metal is rolled into a "curl".

This is an extreme bending process, as sheet metal is fully bent and rolled over itself, to create a circular hollow part through which a pin is passed to join parts and allow for rotation. By forming hinges, thus, a knuckle is created.

Uses of hinge forming.

As previously mentioned, this operation forms a "curl": this is used to make both centered and off-center hinges.

How to form hinges.

For this operation, a specific tool needs to be installed on the press brake. This is used to roll sheet metal over itself to create a circular hollow part.

In order to avoid damaging or breaking the material, this operation must be carried out gradually. The hinge tool progressively bends and rolls sheet metal into the desired shape, without releasing it for the whole operation. The process is divided into 3 steps, all performed by the same tool: two bending strokes and one curving stroke, until sheet metal is finally rolled into a curl.

The 3 steps of hinge forming.

As for a regular hinge, the hinge forming process is divided into 3 steps:

1. The upper part of the tool bends a half circle on the sheet metal edge.
2. According to the diameter of the hinge to be made, another half circle is bent at a distance from the first. The upper part of the tool is thus used to bend the material into a radius-L shape.
3. To close the hinge, sheet metal is placed in the central part of the tool. This operation will result in a perfectly circular shape, with the desired diameter, obtained using the central part of the tool.

Hinge tool by Eurostamp: technical features.

The hinge tool is a special tool, designed specifically for hinge forming.

Hinge tool: the advantages.

• the Hinge tool is the only press brake tool able to bend hinges with a diameter of up to 2mm minimum and 6mm maximum;
• thanks to the possibility of changing the tool kits, it is possible to obtain a perfect round diameter of different dimensions, without replacing the tool core: you can make different diameters with the same tool;
• it allows metalwork on sheet metal with a thickness of 1,5 mm maximum with a perfect round diameter;
• adjustability to the main press brake models.

All precision tools undergo heat treatments to increase durability and wear resistance.

Hinge tool by Eurostamp Tooling: watch the video!

Eurostamp Tooling, Italian excellence.

Since 1970 we have been leaders in designing and manufacturing high-precision press brake tooling.

Our skilled technical staff are available to provide the customers with customized consulting services and customized design of tools and accessories.

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