Ultrasonic - Ultrasonic machining for
hard brittle materials

Glass, ceramics, silicon, graphite and hard metals are materials that cannot be processed using conventional manufacturing processes. But here at Fuchshofer Präzisionstechnik GmbH, we have been able to process these ‘advanced materials’ since 2005 - using ultrasonic technology.

We operate 3- and 5-axis machining centres for this purpose. Ultrasonic drilling, ultrasonic grinding and ultrasonic milling are all carried out on the same machine.



How ultrasonic machining works

The ultrasonic generator emits high-frequency electrical signals and converts them into a mechanical movement. The diamond tool contracts and expands in a pulsating motion up to 50,000 times per second (oscillation of 2-8 μm). As a result, the tool hits the surface and loosens tiny particles of the component. The diamond tool rotates simultaneously and removes the loosened material.

Advanced Materials

A number of different materials can be processed using ultrasonic technology. Please find an overview of the most common materials below:


  • Aluminium oxide
  • Silicon carbide
  • Silicon nitride
  • Zirconia
  • Magnesium oxide
  • Macor

Hard metal

  • Tungsten carbide
  • High-strength steels HRC 53-54


  • Quartz glass
  • Alkali lime silicates
  • Alkali lead silicates

Composite materials

  • carbon fiber
  • mineral fibre






Ultrasonic machining techniques:

  • Ultrasonic drilling from a diameter of 0.8 mm
  • Ultrasonic grinding: Surface grinding, peripheral grinding and contour grinding
  • Ultrasonic milling: 3D contours, pockets, grooves and slots

Machining sizes:

  • 980 x 630 x 630 mm (travels X/Y/Z)
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