In the process of milling tool life reduced aufgrung of the ceramic layer dramatically (Figure 5). Figure 5: Increased tool wear in the field of ceramic coating by different immersion depths of the cutters in the milling underlay the tool life can be increased again. Recommendation: Increase to approximately 50% of the mills stand way the immersion depth of the cutter in the cutting surface. If the ceramic layer is top, the immersion depth must be reduced.
The depth change depends on the thickness of the ceramic coating and exterior location copper. Depending on the milling underlay thickness this can be repeated several times. Summary: The cost of machining by IMS are affected first and foremost by the right tool and parameter selection. Diamond coated drill and Cutter guarantee a high dimensional accuracy and process capability and are used worldwide in the meantime. Especially in the mechanical processing of IMS as well as head of Board materials with fillers, coated tools have prevailed diamond. From machine-technical point of view, especially clamping pliers concentricity and vibrations have a high impact on the tool life and the quality of the surface. Tool life and quality of machining by IMS are positively affected by the use of a minimal quantity lubrication unit. Ceramic dielectrics are the recommended speeds and feeds to cut by 10-20%. The tool life will focus on approximately half compared to FR4 dielectric reduce. Johann Schmidt, GCT GmbH, D-88250 Weingarten,, the GCT GmbH in Weingarten is leading manufacturer of diamond coated tools for the machining of printed circuit boards.