These high-grade blanks with through-tool cooling channels are used when manufacturing CrazyDrill Cool. Mikron Tool has specialized in grinding the carbide raw material in such a way that the tool is not weakened and remains stable despite the internal cooling channels. It is generally known that machining tungsten carbide or grinding carbide blanks with through-tool spiral cooling channels represent a special challenge. Thanks to the high surface quality further finishing processes such as reaming are often not necessary. Greater productivity is thus reached without having to invest in expensive manufacturing systems. 236”, coated version in fractional inches available). For example, the uncoated variant of this through coolant drill is best suited for drilling alumimum.ĬrazyDrill Cool can replace expensive deep-hole drilling (for example with gun drilling machine) up to a depth of 15 x d in the drill size diameter range of 0.75 mm to 6 mm (.030”. To be able to machine nonferrous metals as well as high-quality and difficult materials successfully with CrazyDrill Cool, the small drill is available with or without coating depending on need. A clearly defined drilling process allows a high degree of process reliability which combined with fast drilling speeds produce time-savings compared to conventional tooling.
The need to remove chips depends on the material to be machined and the drilling depth (see cutting data chart). The special cutting geometry of CrazyDrill Cool affords optimal chip flow.
Oil volume that is three times greater flows through the shaft at the same pressure, allowing high drilling speeds and guarantees better tool life and more efficient chip removal. Two spiral cooling channels leading up to the drill tip supply the cutting edges with coolant even at lower pressure due to the power chamber in the shaft (up to a drill diameter of 2.95 mm /. On inclined surfaces the combination with CrazyDrill Crosspilot works best allowing center drilling with an inclination angle of up to 60°. By means of fine-tuned tolerances the long drill is not only guided very well in a cylindrical bore but also produces a hole with the best quality. CrazyDrill Cool then reaches the maximum drilling depth in one or more pecks (depending on material).
Centering and pilot drilling is carried out in one step with two types of drill bits: CrazyDrill Pilot or CrazyDrill Crosspilot. The drilling concept from Mikron Tool is especially designed for deep holes and is based on a two-stage principle. CrazyDrill Cool is used everywhere where long drills are needed to create deep and accurate holes.
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