Page 279 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE

Deep Hole Drilling Systems

Problem Possible Cause Solution

The drill breaks or • Chip evacuation problems • Check that the coolant passages are clear
insert chips and that the Venturi slots are not damaged
• Center misalignment of drill to workpiece • Check center alignment of drill to workpiece
• Check workpiece and drill clamping rigidity

Poor surface finish • Workpiece or drill clamping rigidity problem • Improve workpiece or drill clamping DEEP DRILLING - BTA SYSTEM
• Inadequate coolant oil • Check the coolant oil and replace if necessary
• Cutting speed too low • Increase the cutting speed

Excessive leakage of • Chips block the fluid passages • Clear the chips
the coolant • The drill was incorrectly assembled, • Check all connections and the
or the Venturi slots of the internal tube direction of the internal tube
are located in the wrong direction

Insufficient coolant • Chips block the fluid passages • Clear the chips
flow at the cutting • Worn bushing or sealing device • Check the bushing and seal
zone, despite correct and replace if necessary
fluid supply • Venturi slots are too wide (worn) • Replace the internal tube
• Internal tube shorter than the external tube • Replace the internal tube to
one with a correct length

Chips jam in the front • Insufficient coolant flow • Adjust the fluid flow by raising the pressure;
end of the drill check the filter and fluid quality

Connection Adapters Special Heads
Various kinds of rotating and non-rotating drill Special form heads for trepanning or any other
connectors are available upon request. special contours can be produced on request.

Oil Pressure Heads
Oil pressure heads are available on request.

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