Каталог Iscar вращающийся инструмент 2017 - страница 595

USER GUIDE Troubleshooting Problem Cause Solution • Poor clamping • Check the clamping. Use hydraulic clamping of the chuck chuck, maxin power chuck or a shrink system. • Workpiece movement • Increase workpiece chucking force. • Check drill type and drilling depth, cooling • Wrong drill system and workpiece material. • Check cooling lubricant. Increase coolant • Insufficient coolant pressure. In the case of external coolant supply, improve jet direction and add cooling jets. • Unsuitable cutting • Reduce feed. conditions • Worn out drill center • Regrind cutting edge. point (chisel) SOLID CARBIDE DRILLS • Insufficient chip • Use pecking cycle. evacuation Drill breakage • Poor clamping • Check the clamping and adaptation. Use hydraulic of the chuck clamping chuck, maxin power chuck or a shrink system. • Workpiece movement • Increase workpiece chucking force. • Check drill type and drilling depth, cooling system • Wrong drill and workpiece material. Possibly use longer drill. • Check cooling lubricant. Increase coolant • Insufficient coolant pressure. In the case of external coolant supply, improve jet direction and add cooling jets. • Unsuitable cutting • Check cutting parameters, and possibly reduce feed. conditions • Worn out or broken • Replace drill or regrind cutting edge. Chipping on the cutting corners cutting corner Problem Cause Solution • Unsuitable cutting • Reduce feed by 30-50% during exit. conditions • Worn out drill • Replace drill. Burrs on exit • Unsuitable cutting • Adjust feed to improve chip flow. Ra conditions • Make sure that the drill’s runout is • Large runout within 0.02 mm (radial & axial). • Chip jamming • Reduce cutting speed. • Increase coolant pressure. • Apply pecking procedure. Rough surface finish • Make sure that the drill runout is within • Large runout 0.02 mm (radial & axial). • Poor stability • Check and improve drill and workpiece clamping rigidity. • When drilling hard materials or sloped surfaces, • Rough application reduce feed by 30-50% during entrance. Deviation of hole position • Use a short pilot drill with 140° point angle. 591 591