Общий каталог FANAR 2021 - страница 169

WDG Drill to remove broken taps WDG VHM AT P M K P M K Material groups N S H N S H Internal cooling - Quality of material VHM Coating AT Norm - Nakrój / ChaĆmdfe1r M l ±21 l ±22 Ćd 2 Tol. INDEX W9-900002 6 2,53,34,2 M3 38 10 3 0250M4461440330M5501950420 5,0 M6 50 23 6 0500 6,8 M8 60 23 8 0680 8,5 M10 80 25 10 0850 10,2 M12 80 35 12 1020 Feed fz fz fz fz fz Operation instruction: Vc m/min ϕ 3,3-6,8 ϕ 6,8-10,2 ϕ10,2-14,0 ϕ14,0-15,5 ϕ15,5-17,5 1. The workpiece has to be clamped very stable and safe. od do od do od do od do od do od do 2. The overlapping part of the tap has to be made plane with the 10 12 0,040 0,08 0,08 0,110 0,110 0,140 0,140 0,150 0,150 0,170 workpiece. 3. Centering of the drill by multiple tip-centering. In case of tip-centering with an NC machine please choose a lower cutting feed. 4. The remove of a tap can be made with an NC machine with lubrication (Attention: risk of bonding) also by hand with a bench drilling or column 7 driling machine. Multiple chipping removal is absolutely necessary.5. Remove of remaining chippings with compressed air or with a scriber.6. New thrad cutting with a new tap 7. After finishing the new thread please test the size accuracy. 1-5 taps can be remove with one drill to remove jammed taps. Regrinding of drills to remove jammed taps is not economical. 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 in all materials, also in Cu or Al and hardened materials i Drill set to remove broken tapsp. 260 Example of order 166 W9-900002-0250 WDG 2,5 VHM AT