y DRILLING CHIPS

Types of ChipsGeometryFeatures and Ease of Raking
Conical SpiralFan-shaped chips cut by the cutting edge are curved by the flute. Chips of this type are produced when the feeding rate of ductile material is small. If the chip breaks after several turns, the chip raking performance is satisfactory.
Long PitchLong pitch chips exit without coiling and will coil around the drill.
FanThis is a chip broken by the restraint caused by the drill flute and the wall of a drilled hole. It is generated when the feed rate is high.
SegmentA conical spiral chip that is broken before the chip grows into the long-pitch shape by the restraint caused by the wall of the drilled hole due to the insufficiency of ductility. Excellent chip disposal and chip discharge.
ZigzagA chip that is buckled and folded because of the shape of flute and the characteristics of the material. It easily causes chip packing in the flute.
NeedleChips broken by vibration or broken when brittle material is curled with a small radius. The raking performance is satisfactory, but these chips can become closely packed jams.

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