28.04.15

Great interest in Kern Microtechnik's Precision Days

When talking about machining serial production with maximum precision, most people automatically think of Kern Microtechnik.

In order to reliably realize high precision manufacturing in the µm range, several parameters must be perfectly coordinated. This starts with the machine — in which everything must be perfect; from a stable bed, to high-precision guides and drives, to complex thermal management systems and flexible metrology. High precision also always requires the appropriate machining strategy and, not least, the right tools, of which the quality should be regularly inspected.

But this is still not enough. Today, more and more precision manufacturers must not only produce single parts and prototypes, but also go into serial production. For a long time, Kern Microtechnik has dedicated itself to this cause, not least through the Precision Days 2015 event, which received a great reception from customers and partners on April 23rd and 24th.

During a site visit, KERN CEO Dr. Dennis Janitza demonstrated that automation is feasible even with the highest accuracy requirements in a 2 µm range: "As an essential basis to achieve this, you need an extremely high quality machine, such as our Kern Evo or Kern Micro." The latter is a sophisticated milling center that allows fast and easy milling of free-form surfaces thanks to simultaneous five-axis processing. It is extremely stable and provides the high spindle speeds of up to 50,000 rpm needed for the use of micro milling cutters. Equally as important is the Kern Micro's high thermal stability. An innovate cooling management system ensures the temperatures in the machining center remain constant.

Presentations showing paths to precision

In his guest presentation, Dr. Dietrich Imkamp, Director of Visual Systems at Carl Zeiss Industrial Metrology, illustrated how the use of multi-sensor technology can safeguard serial production. "The trend towards increasing demands for the quality of manufactured components remains unbroken." Many processes therefore can no longer be safely controlled without metrology. Also in serial production, metrology is an ever-present companion of the manufacturing process. For this purpose, the measurement system makes different sensors available to intelligently combine vital information for safeguarding and control of production processes."

The event participants listened to the other presentations with equally keen interest. For example, for Josef König, Director of Precision Manufacturing at Rohde & Schwarz (Factory of the Year 2014), it is a certainty that high frequencies do not turn a blind eye to the milling of precision assembly groups. What does this mean? Electrical testing using high frequencies forgives no process weaknesses or tolerance deviations throughout the entire manufacturing process. The foundations for a functional assembly group are thereby laid via perfect milling.

Opportunities for micro precision in injection molding manufacturing are the daily focus for Gerhard Luber, Director Mold Making at Gerresheimer Werkzeugbau Wackersdorf (Toolmaker of the Year 2014). Accordingly, in his presentation he pointed out which steps were taken to achieve the paradigm shift to micro precision at Gerresheimer.

 

From the perspective of a highly sophisticated end user of medical technology, Hans Keller, Director of Prototypes at Aesculap, outlined his key demands and possible solutions: "With the rapid progress of miniaturization in medical technology and increasingly harder and tougher materials, it is mandatory to use Kern machines, such as the Kern Micro."