Каталог Iscar сверла со сменной режущей частью 2022 - страница 129

INDEXABLE DRILLS USER GUIDE Troubleshooting Undersized holes Oversized holes Cone Hole Rotating drill Rotating drill • Check that overlapping is correct • Use shorter drill overhang (if possible) between inner and outer inserts • Reduce feed by 30-50% • Check inner insert over center • Check that overlapping is correct • Increase coolant pressure between inner and outer inserts • Change the insert chipbreaker • Check inner insert is positioned over center Non-rotating drill•Checkmisalignment•Checkthat overlapping is correct within its limits•Increase coolant pressure•Change the insert chipbreaker between inner and outer inserts Non-rotating drill • Check inner insert over center • Check misalignment • Rotate drill 180 degrees • Check that overlapping is correct • Increase coolant pressure between inner and outer inserts • Change the insert chipbreaker • Check inner insert is positioned over center within its limits • Rotate drill 180 degrees • Increase coolant pressure Pin in hole Vibrations • Change the insert chipbreaker Bad Surface Finish Rotating drill • Use shorter drill overhang (if possible) • Reduce feed by 30-50% • Check that overlapping is correct between inner and outer inserts Rotating drill • Check inner insert is positioned over center within its limits • Improve chip formation (change chipbreaker • Increase coolant pressure type or cutting condition) • Change the insert chipbreaker • Increase coolant pressure Non-rotating drill•Checkmisalignment • Increase speed and reduce feed•Stabilize clampingdevice • Check that overlapping is correct Non-rotating drill between inner and outer inserts • Improve chip formation (change chipbreaker • Check inner insert over center type or cutting condition) • Rotate drill 180 degrees • Increase coolant pressure • Increase coolant pressure • Increase speed and reduce feed • Change the insert chipbreaker • Stabilize clamping device 127