Exit-Side Drill Penetration Without Delamination
Slow-motion video shows the effect of a micograin tool coating in drilling CFRP.
Cutting tool maker OSG says a patented coating process keeps the micrograin structure of its diamond coating to less than 1 micron. Coating typically rounds the edge of a tool, but the smaller micrograins produce a coated tool that is sharper. The result, says OSG, is less tradeoff between the tool life of diamond and the delamination that can result from a duller tools. This video shows this. The sharp edge of the small-micrograin diamond-coated tool lets this tool exit the hole much more cleanly.
Lockheed Martin’s precision machining of composite skin sections for the F-35 provides part of the reason why this plane saves money for U.S. taxpayers. That machining makes the plane compelling in ways that have led other countries to take up some of the cost. Here is a look at a high-value, highly engineered machining process for the Joint Strike Fighter aircraft.
Choose cutters, depths and tool paths with attention to particular steps in the process, and you can machine titanium more efficiently than you might suspect. Boeing offers practical tips.
Though it won’t replace high speed machining, Boeing sees “low speed machining” as a viable supplement to higher-rpm machines. Using new tools and techniques, a shop’s lower-rpm machining centers can realize much more of their potential productivity in milling aluminum aircraft parts.