In metal cutting processing Produce scrap iron, chipping, serration iron sheet and because of the heat generated by the cutting clinkering scrap iron or united into amorphous metal object general terms is chip.

And all the cutting work, there are chips. The chip type, according to the work piece material and cutting are different. Brittle materials such as cast iron, brass chips are chopped into fragmentary; iron, steel and pure copper tempered ductile material chips into a continuous spiral strip.

Broken material chip is easy to invade the machine tool and fixture anyplace. When it stays in the fixture at the footing, fixture position is not straight. When it stays on the locations, work piece fixture position is not allowed. Above two kinds of circumstances, as long as there is a presence, will make the size of the finished product allowed, shape deformation. Once chip into screw hole, or rotation pin hole, will interfere with the rotation of the part, as a result, the tool wear faster, will shorten service life.

Continuous chip, its fragment harmfulness and the broken chip is the same. In addition, because the chip as a sharp blade, and contains heat, no matter what fixture or work piece, contact with it will be damaged, even fly out wounding. So chip should be clear in time, lest cause unnecessary damage.

Modern numerical control machine tool using the NC editor function, periodic changes in feeding, to achieve the purpose of forced chip breaker, often referred to as “program-controlled chip breaker”. This approach chip breaker reliability is high, but the cost is higher, due to the low cutting economics, so that only applies to other difficult to chip breaking process, for example, radial facing circuit quirk.