Types of Chips |
Shape |
Features and Ease of Raking |
Conical Spiral |
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Fan-shaped chips cut by the cutting edge are curved by the flute. Chips of this type are produced when drilling ductile material at a small feed rate. If the chip breaks after several turns, the chip breaking performance is satisfactory. |
Long Pitch |
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Long pitch chips exit without curling and will easily coil around the drill. |
Fan |
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This is a chip broken by the drill flute and the wall of a drilled hole. It is generated when the feed rate is high. |
Segment |
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A conical spiral chip that is broken just before the chip grows into the long-pitch shape by the wall of the drilled hole due to its insufficient ductility. Excellent chip disposal and chip discharge. |
Zigzag |
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A chip that is buckled and folded because of the shape of flute and the characteristics of the material. It easily causes chip packing at the flute. |
Needle |
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Chips broken by vibration or broken when brittle material is curled with a small radius. The breaking performance is comparatively satisfactory, but these chips can become closely packed. |