Page 556 - Iscar

USER GUIDE
INDEXABLE DRILLS • Apply above 6 Bar in 2.25xD tools (optimal pressure • Apply high speed machining on low carbon steel

User guide for DRG-MF

Optimization of Chip Shape
Coolant Pressure

• Produce thin chips, as most problems
is above 10 Bar).
are caused by thick chips
Radial Adjustment (off-center drilling)
• Regulate chips produced by machining
• Radial adjustment is depending on drill diameter
medium to high carbon steel
• If too tight, either increase speed and reduce
feed, or reduce speed and increase feed
• If too long, reduce speed and increase feed
Tool
Dmax
9.82
10
DRG-MF-10 Drill Dia. Dmin 10.60
DRG-MF-12 12 11.82 12.60
DRG-MF-14 14 13.80 14.60
DRG-MF-16 16 15.76 16.50
DRG-MF-20 20 19.80 20.60
DRG-MF-25 25 24.80 25.80
DRG-MF-32 32 31.80 33.00
Troubleshooting
Problem Solution
Increase cutting speed. Reduce feed. Check tool and workpiece
Chipping caused by built-up edge
rigidity. Reduce tool and workpiece overhang.
Excessive flank wear Reduce cutting speed. Use a harder grade (special). Increase coolant flow. Check cutting edge height.
Edge deformation Reduce cutting speed. Use a harder grade (special). Increase coolant flow. Reduce feed.
Poor surface quality Reduce feed. Increase coolant flow. Check tool and workpiece rigidity.Increase cutting speed.
Long chips Increase feed. Reduce cutting speed. Increase coolant flow.
Tight chips Reduce feed.
Check tool and workpiece rigidity. Reduce tool and workpiece overhang. Reduce cutting speed. Increase
Vibrations
feed. Check cutting edge height. Reduce feed and increase cutting speed on very soft materials.

User Guide for Turn-Mill Machines

Insert Positioning Setup
For drilling, cutting edge should be
positioned in the center of tool body.
Cutting edge for drilling
Ø/2
Core Ø

Check formation of core and its size after
Cutting
edge for drilling 3 mm to 6 mm depth.
The diameter of the core should be within 0.15-0.45 mm.
drilling
Correct Correct Wrong Adjust Y-axis of the tool body by using the new adjustable
clamping unit (if it is available) or rotate the tool body
180° and secure it into a turret. Check the core again.
Important: If a core does not appear,
this can cause breakage of insert and
vibration when drilling or turning.
If the size of the core is over the recommended size,
it will cause overload and vibration.

Angular error Warning: As the drill goes
all the way through a
workpiece, it ejects a disc.
For worker safety, guards
should be used.

ISCAR
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552 ISCAR