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Saturday, August 23, 2014

Trumpf Laser/Punch Combination Machine Reduces Metal Stresses


The TruMatic 7000. Credit: Trumpf.

Trumpf has released a new punch and laser-cutting combination machine designed to reduce distortion produced in other machining and punching techniques.

As Industrial Laser Solutions (ILS) notes, traditional punching techniques employ a punch probe that first penetrates the sheet metal, causing compressive stresses, and then retracts to create further tensile stress. Repeating this process multiple times on a single piece of sheet metal, especially low-gauge sheet metal, can cause severe distortion that can lead to further machining processes or part instability.

The TruMatic 7000 machine uses lasers to help reduce these issues. The machine uses a convex die to punch holes against a recessed stripper, allowing the workpiece to bend against two separate points of contact. This “overbending” creates counter-stresses, which work to negate the stresses caused in traditional punching procedures.

The 4 kW TruFlow CO2 laser then works to process the cuts. The Trupunch 7000 features additional laser axes to increase workspace coverage. The laser features a fast cycle time of one second, which can help speed up operations, and can function free of maintenance or supervision for extended periods of time. Trumpf designed the TruFlow laser to provide maximum thermal stability for use on high-precision workpieces for components destined for medical or aerospace use.

Brian Lane

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