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Laser cutting in micro machining

The laser cutting in micro machining, mechanically and thermally very stable machine concepts with precision axes are used. Accuracies in the micrometer range with kerfs from 10 microns are state of the art technology today. Typical applications include the laser cutting of lattice structures such as stents for the medical industry or of the smallest micromechanical components made of high-quality stainless steel, non-ferrous metals and ceramics for the watch industry and precision engineering. The laser cutting heads must be suitable for continuous wave operation with solid-state lasers as well as for various frequency-multiplied laser wavelengths in the ultra-short pulse range. Smallest spot diameters require a diffraction-limited optical design with the finest adjustment possibilities and corresponding optical positioning aids with integrated camera technology.

FineCutter System
FineCutter - Finest contours and smooth cutting surfaces

The FineCutter with integrated camera monitoring can be used for high-precision applications with laser power up to 500 W. Die clearances of approx. 10 µm are feasible with the respective beam quality.  Medical implants like stents or other precision parts made up of pipes are cut with the FineCutter. Surgical needles or endoscope parts and micro machining parts for e.g. mechanical watches are additional application examples. 

FineCutter System
The journey to the center of the earth - using the laser in a different way

At the Bavarian Geoinstitut in Bayreuth, the FineCutter is used for basic research. Two diamonds are stretched across from each other via a centering ring in a structure here. There is space for a gel between the two diamonds, in which various clean ore are inserted. Now, the laser beam is focused directly on the clean ore through the diamonds and this is heated up intensely. An internal temperature of over 700° C is generated. By pressing the diamonds together from both sides, the internal pressure increases up to 250 GPa. Material changes can be observed with the aid of a camera monitoring. This structure provides a simulation of processes in the Earth's core. Diamonds can even be produced through the insertion of carbon compounds.

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