Stage I Stage II Stage III

Stage III Stage IV

Wire diameter 3/16″, finished part falling out, 2.4 sec. cycle time incl. bending, notching, lug pressing and swaging, power requirement approx. 20 kW, part family with variable length, short change over times, different gauging methods incl. data logging possible

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Lug and Notch Pressing

Lug and notch pressing are two common processes in different metal manufacturing applications. As it is the case of other processes, lug and notch pressing require some metal deformation and removal to achieve the expected result.

What is lug pressing?

First of all, a lug can be defined as a projection of an object by which it may be carried or attached to something. Therefore, lug pressing is the manufacturing process where a press is used to flatten the projection of the metal wire and to open the hole used by which it will be carried or attached.

A common application of lug pressing is the creation of cable lugs, which are necessary to secure the cables to their corresponding connections by means of screws and nuts or any other type of fastener.
What is notch pressing?

To better understand what notch pressing is, it is important to know that a notch can be defined as an indentation or incision on an edge or a surface. Like lug pressing, notch pressing is the process where a press is used to create such indentations or incisions on the metal part.

The applications for notch pressing are varied. A common one is notching the end of a tube to make it easier to match the round shape of another tube it will be welded to. On the other side, metal wire notching is frequently used to create not only one but a series of indentations that may be used as selectable levels, such as in the case of headrests that can be set at different heights.
How are these processes performed?

Traditionally, each process is performed independently requiring specific tooling (press and dies) and operators for each of them. Of course, these requirements result in higher costs and reduced efficiency, which in turn means less productivity, a longer time to market and lower profitability.

To avoid those negative aspects when needing both processes performed on the same piece, Schmale machines provide fully automated solutions that integrate more than one process as required, including bending, lug and notch pressing and swaging, allowing you to achieve a high level of efficiency and productivity.

The process begins where a wire with a diameter of up to 3/16″ is fed into the tool set by automatic servo-electric feeders. Then the wire goes through the processes mentioned before where an arrange of automated sliding benders and presses generate the expected results.

The entire cycle only takes 2.4 seconds along four stages until the part is ready for market, which clearly represents an enormous increase in efficiency and productivity and a significant reduction in the time to market, meaning that the profitability of your business will be higher.

If you are looking for an automated lug and notch pressing solution, or you have any further questions, please do not hesitate to contact us and we will gladly help you.