Question

A good cutting action is indicated by
1) low chip reduction coefficient
2) smooth surface finish
3) high cutting ratio
4) low cutting ratio

Answer 1

ACC to me 2nd is the correct answer....

Answer 2

A good cutting action is indicated by a high cutting ratio.

• Plastic deformation causes the metal chip flow during the metal cutting process to be thicker and shorter than the metal before the cutting.
• The chip thickness ratio or cutting ratio indicates the magnitude of this dimensional difference.
• The difference between the chip thickness before and after cutting is known as the chip thickness ratio or cutting ratio.
• The chip thickness ratio is affected by the kind of material being treated, the geometry of the cutting tool, the kind of cutting fluid being used, as well as other cutting factors including feed rate, speed, and depth.
• Higher cutting ratio denotes that the cutting action is good.

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