Page 594 - Iscar

USER GUIDE
SOLID CARBIDE DRILLS

Troubleshooting

Problem Cause Solution
• Poor clamping • Check the clamping. Use hydraulic clamping
of the chuck 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 chisel edge
• Poor clamping • Check the clamping. Use hydraulic clamping
of the chuck chuck, maxin power chuck or a shrink system.
• Unsuitable cutting • Increase cutting speed, reduce feed rate.
conditions
• Check cooling lubricant. Increase coolant
pressure. In the case of external coolant supply,
• Insufficient coolant
improve jet direction and add cooling jets.

Chipping on the cutting • Rough application • Reduce feed rate by 30-50% during entry and exiting.
edges / built-up edge
• Check cooling lubricant. Increase coolant
• Insufficient 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 • Check the clamping. Use hydraulic clamping
Excessive wear on the
cutting corners of the chuck chuck, maxin power chuck or a shrink system.
• Workpiece movement • Increase workpiece chucking force.
• Check cooling lubricant. Increase coolant
• Insufficient coolant pressure. In the case of external coolant supply,
improve jet direction and add coolant jets.
• Check drill type, drilling depth, cooling
• Wrong drill
system and workpiece material.
• Unsuitable cutting • Increase feed. When spot drilling, reduce feed.
conditions
Chipping on the lands

• If hole size is too large, increase cutting
• Unsuitable cutting speed or reduce feed. If hole size is too small,
conditions
reduce cutting speed or increase feed.
• Poor clamping • Check the clamping. Use hydraulic clamping
of the chuck chuck, maxin power chuck or a shrink system.
• Make sure that the drill’s runout is
• Large runout
within 0.02 mm (radial & axial).
• Worn out center • Regrind cutting edge or replace the drill.
Hole diameter out of tolerance point (chisel)
• Insufficient chip • Use pecking cycle.
evacuation
• Poor clamping • Check the clamping. Use hydraulic clamping
of the chuck 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 • Increase feed. When spot drilling, reduce feed.
conditions
Hole not straight

ISCAR
590 ISCAR
590