Каталог Iscar монолитные сверла 2022 - страница 31

SOLID CARBIDE DRILLS USER GUIDE Troubleshooting Problem Cause Solution Chipping on the chisel edge • Poor clamping of the chuck • Check the clamping. Use hydraulic clamping chuck, maxin power chuck or a shrink system. • Unsuitable cutting conditions • Decrease feed, increase coolant pressure. • Chisel runout • Check or replace the clamping adaptation. • Workpiece movement • Increase workpiece chucking force. Chipping on the cutting • Poor clamping of the chuck • Check the clamping. Use hydraulic clamping chuck, edges / built-up edge maxin power chuck or a shrink system. • Unsuitable cutting conditions • Increase cutting speed, reduce feed rate. • Insufficient coolant • Check cooling lubricant. Increase coolant pressure. In the case of external coolant supply, improve jet direction and add cooling jets. • Rough application • Reduce feed rate by 30-50% during entry and exiting. Excessive wear on the • Insufficient coolant • Check cooling lubricant. Increase coolant cutting corners pressure. In the case of external coolant supply, improve jet direction and add coolant jets. • Large runout • Check if the runout is within 0.02 mm T.I.R. (radial & axial) • Unsuitable cutting conditions • Reduce cutting speed, increase feed. • Rough application • Reduce feed rate by 30-50% during entry and exit. • Poor clamping of the chuck • Check the clamping. Use hydraulic clamping chuck, maxin power chuck or a shrink system. Chipping on the lands • Workpiece movement • Increase workpiece chucking force. • Insufficient coolant • Check cooling lubricant. Increase coolant pressure. In the case of external coolant supply, improve jet direction and add coolant jets. • Wrong drill • Check drill type, drilling depth, cooling system and workpiece material. • Unsuitable cutting conditions • Increase feed. When spot drilling, reduce feed. Hole diameter out of tolerance • Unsuitable cutting conditions • If hole size is too large, increase cutting speed or reduce feed. If hole size is too small, reduce cutting speed or increase feed. • Poor clamping of the chuck • Check the clamping. Use hydraulic clamping chuck, maxin power chuck or a shrink system. • Large runout • Make sure that the drill’s runout is within 0.02 mm (radial & axial). • Worn out center point (chisel) • Regrind cutting edge or replace the drill. Hole not straight • Insufficient chip evacuation • Use pecking cycle. • Poor clamping of the chuck • Check the clamping. Use hydraulic clamping chuck, maxin power chuck or a shrink system. • Workpiece rigidity • Increase workpiece chucking force. • Worn out drill center point (chisel) • Regrind cutting edge. • Unsuitable cutting conditions • Increase feed. When spot drilling, reduce feed. 179