Schunk Reduced-cost laser welding unit built for tool and die shops

The unit rapidly handles complex, worn and surface-damaged parts without external programming.

The economically priced PSM 400 Performance is designed specifically for laser machining of tool steel, according to supplier Schunk.

It said the unit offers highly accurate linear axes, a high-value CNC controller with real-time simulation, a robust laser source, and reflection-safe fibers to provide users with high precision and repeat accuracy. Moreover, even parts that are complex, worn or damaged on the surface can be handled rapidly in three-dimensional space without time-consuming external programming.

The company said that the machine can be set up quickly due to the user-friendly HMC controller and the teach-in function for lines, arcs, circles and splines in three-dimensional space. Welding procedures can be replicated any number of times in a stable process, Schunk explained.

Powerful Nd:YAG lasers from JK Lasers (a GSI Group company) with outputs of 150 or 300 W are available as laser sources. Their solid construction, high-quality ceramic cavities and a thermally stable resonator ensure a long-term high beam quality, according to the supplier.

The pulse stability is quoted at +/- 0.5%. With a peak pulse power of 5 kW and 9 kW, the JK laser source generates pulse energy of 35 J and 56 J, respectively, Schunk explained, adding that laser parameters can be easily matched to the specific properties of materials.

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