Boring
 

Insert tool life


Looking at the three main machining parameters, speed, feed, and depth of cut, each has an effect on tool life. The depth of cut has the smallest effect followed by the feed rate. Cutting speed has by far the most effect on the tool life of the insert.​

 

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Effects of depth of cut

Too small

  • Loss of chip control
  • Vibrations
  • Excessive heat
  • Uneconomical.

 
Too deep

  • High power consumption
  • Insert breakage
  • Increased cutting forces.​

 

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Effects of feed rate

Too light

  • Stringers
  • Rapid flank wear
  • Build-up edge
  • Uneconomical.


Too heavy

  • Loss of chip control
  • Poor surface finish
  • Crater wear/plastic deformation
  • High power consumption
  • Chip welding
  • Chip hammering.
    • ​

 

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Effects of cutting speed

Too low

  • Built-up edge
  • Dulling of edge
  • Uneconomical.


Too high

  • Rapid flank wear
  • Poor finish
  • Rapid crater wear
  • Plastic deformation.

 

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