573 SOLID CARBIDE DRILLS FOR REMOVING JAMMED TAPS Solid carbide drills for removing jammed taps Cutting data for bench drilling and column drilling machine Lubrication: Dry or wet (risk of stick together with lubrication) Speed: 1,000–1,500 r/min Operation instruction 1. The workpiece has to be clamped. 2. The overlapping part on the tap has to be plane with the workpiece. 3. Centering of the drill by multiple tip-centering. In case of tip-centering with NC machine please choose a lower cutting speed. 4. The tap removal can be made with an NC machine with lubrication (Attention: risk of sticking together) also by hand with a bench drilling or column 5. Remove the remaining chippings with compressed air or with a scriber. 6. New thread cutting with a new tap. 7. After finishing the new thread please test the size accuracy. 1–5 taps can be removed with one drill for removing jammed taps. Regrinding of drills for removing jammed taps is not recommended. Due to the hexagon this drill can also be clamped in normal three-or-four-jaw chucks. In case of correct use the core hole will not be damaged on materials, also in Cu or AI and hardened materials. 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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