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Drilling tools with indexable inserts \ Processing and machining technology - Indexable insert drilling

troubleshooting indexable insert drilling

rapid wear of the peripheral cutting edge

wear to open space is the preferred type of wear, if it is even.
problem
ƒ cutting speed too high
ƒ too little cooling
ƒ wrong cemented carbide type
countermeasures
ƒ reduce cutting speed
ƒ increase cooling
ƒ select a more wear-resistant cemented carbide type

vibrations on the tool body
problem
ƒ cutting speed too high
ƒ feed rate too high
ƒ too little cooling
countermeasure
ƒ reduce cutting speed
ƒ reduce feed rate
ƒ increase cooling
rapid wear of the inner cutting edge
problem
ƒ uneven workpiece surface
ƒ unstable tool/workpiece clamping conditions
ƒ wrong cemented carbide type
countermeasure
ƒ reduce feed rate by 50%
ƒ check tool/workpiece clamping
ƒ select a tougher grade of cemented carbide
rapid wear of the outer cutting edge

problem
ƒ feed rate too high
ƒ uneven workpiece surface
ƒ wrong cemented carbide type
ƒ wrong indexable insert geometry
countermeasure
ƒ reduce feed rate
ƒ reduce feed rate by 50%
ƒ select a tougher grade of cemented carbide
ƒ use an indexable insert geometry for higher feed rates
chips welding to the tool body

problem
ƒ cutting speed too low (long-chipping)
ƒ feed rate too high (long-chipping)
ƒ feed rate too low
ƒ too little cooling
countermeasure
ƒ increase cutting speed (long-chipping)
ƒ reduce feed rate (long-chipping)
ƒ increase feed rate
ƒ increase cooling
long continuous chips are produced

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com 99
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