Каталог Iscar монолитные сверла 2022 - страница 31

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Troubleshooting

ProblemCauseSolution
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 • Chisel runout• Decrease feed, increase coolant pressure. • Check or replace the clamping adaptation.
• Workpiece movement• Increase workpiece chucking force.
Chipping on the cutting edges / built-up edge• Poor clamping of the chuck• Check the clamping. Use hydraulic clamping chuck, 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 cutting corners• Insufficient coolant• Check cooling lubricant. Increase coolant 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 cuttingconditions• 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.