MITSUBISHI MATERIALS CORPORATION
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STANDARD INSERTS
  • Positive and Negative Rake Angle

Negative Rake Angle

Negative Rake Angle

Neutral Rake Angle

Neutral Rake Angle

Positive Rake Angle

Positive Rake Angle

  • Insert shape whose cutting edge precedes is a positive rake angle.
  • Insert shape whose cutting edge follows is a negative rake angle.

  • Standard Cutting Edge Shape
Standard Cutting
Edge Combinations		 Double Positive(DP Edge Type)
Double Positive
(DP Edge Type)

Double Negative(DN Edge Type)
Double Negative
(DN Edge Type)

 Negative/Positive(NP Edge Type)
Negative/Positive
(NP Edge Type)
Axial Rake Angle (A.R.) Positive(+) Negative(-) Positive(+)
Radial Rake Angel (R.R.) Positive(+) Negative(-) Negative(-)
Insert Used Positive Insert
(One Sided Use)		 Negative Insert
(Double Sided Use)		 Positive Insert
(One Sided Use)
Workpiece Steel —
Cast Iron —
Aluminium Alloy — —
Difficult-to-Cut Material —