MICRO MACHINING | CASE STUDY
Through the utilisation of rotational and parallel axes, it is possible to position workpieces so that flat grinding processes can be carried out on the machine. Kern uses this technology on its own machines to produce axis components directly on the milling-grinding centre. Due to the omission of the ‘flat grinding’ processing step, the throughput time as well as the processing times could be reduced while simultaneously improving the quality.
An additional benefit is that the milling and grinding of hard materials (tungsten carbide and ceramics as two examples) can take place in one mounting process. Previously, the direct milling of hard materials was deemed to be unprofitable. However, over the last several months, new tools in conjunction with the proper machine technology and the suitable milling strategy have proven that this solution can be economically efficient and productive. The best results were achieved with a combination of grinding and milling processes in one mounting process. During this process, all excess material is removed through a rough grinding process without having to use the cost-intensive hard metal milling tools. Afterwards, the component is finished in a 5-axis simultaneous process with the help of the new hard material direct milling process.
<< Figure 5:Te dressing spindle can be equipped with various dressing
tools and can be freely positioned for optimal dressing results. >>
Kern Microtechnik GmbH
www.kern-microtechnic.com
The article was first published in Germany, “fertigung extra” issue 3.2014, editor Jürgen Gutmayr.
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Reishauer AG Industriestrasse 36 8304 Wallisellen Switzerland
25 | commercial micro manufacturing international Vol 7 No.4
T +41 44 832 22 11 F +41 44 832 23 90 info@
reishauer.com reishauer.com / rmnt
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