Dual-Feature Center Drill
The CrazyDrill Twicenter from Mikron Tool features two integrated coolant ducts and a double cutting point. The integrated ducts supply coolant directly to the drill’s cutting edge, so no additional external cooling is needed. Bringing the coolant to the cutting edge is a challenge for drilling—and consequently when centering—in difficult-to-access places.
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The CrazyDrill Twicenter from Mikron Tool features two integrated coolant ducts and a double cutting point. The integrated ducts supply coolant directly to the drill’s cutting edge, so no additional external cooling is needed. Bringing the coolant to the cutting edge is a challenge for drilling—and consequently when centering—in difficult-to-access places. The center drill’s internal coolant supply is designed to address this problem. The tool can also be used for conventional applications.
The drill’s double cutting point is said to provide more cutting stability. The tool’s 60- or 90-degree chamfers are combined with a 130-degree tip angle to improve both cutting edge protection and centering for the subsequent drilling operation. It is also available with a 120-degree point angle, which is said to give stable performance. A second angle is not necessary in this case. The diameters are matched to the existing CrazyDrill program. The center drill is available from stock in diameters ranging from 0.3 to 6 mm. An appropriate coating increases its service life.Â
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