Basic law of the process of carbide cutting tool

Carbide cutting tools during the cutting process is the process of the chips and the machining surface is formed by cutting movement by a cemented carbide cutting tool from the workpiece, cut the excess metal layer,cemented carbide cutting tool is deformed in this process,forms a chip, resulting in the cutting force,cutting heat cutting temperature,cutting tool wear phenomena.

Will cut off the peel rewound apple, can also be in accordance with the original look of the pieces together. However, the cutting metal carbide cutting tools, especially in the continuous cutting of steel, the chip will not follow as it rolled up. Not because the chip is too hard, but because the chip length will change's sake. At the same time, the chip will be widened to thicken. In other words, the different elements of the cutting chip shape is also very different. The thickness of the chip is typically several times the original, while the length of the chips is a fraction of the original. Accordingly, the chips obtained by using a cutting speed cutting, equivalent based on the fraction of the chips generated by the cutting speed.

The shape of the chip according to the formed after shear slip of the cutting tool, the chip is divided into four types.

1.Ribbon chips
Plastic deformation of the cutting layer was cut off after the tool, the chip shape stretches continuous strip, chip along the tool in front of outflows.

2.Festival like chips
Cutting layer in the plastic deformation process, the shear stress of the shear surface at the local position of the material strength limit partially broken, so that cracking of the chip top surface forming nodose.

3.Granular chips
Generated in the shear surface of the shear stress exceeds the material strength limit, the chips formed are shear breaking into a granular form.

4.chipping chips
When cutting cast iron brittle metal, the chip layer has not been plastically deformed, the loose interface between the graphite and the ferrite material tissue produce irregular fracture, while the formation of cracked chips.