MITSUBISHI MATERIALS CORPORATION
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FINISHED SURFACE

  • Cutting Edge Runout Accuracy
Cutting Edge Runout Accuracy Cutting edge run-out accuracy of indexable inserts on the cutter body greatly affects the surface finish and tool life.
Cutting Edge Runout and Accuracy in Face Milling
Face Milling Run-out Accuracy
Minor Cutting Edge 0.03mm
Peripheral Cutting Edge 0.05mm
Cutting Edge Run-out and
Accuracy in Face Milling		  
  • Improve Finished Surface Roughness
Sub Cutting Edge Run-out Since Mitsubishi Materials' normal sub cuttingedge width is 1.4mm, and the sub cutting edges are set parallel to the face of a milling cutter, theoretically the finished surface accuracy should be maintained even if run-out accuracy is low.
  • Replace one or two normal inse-
    rts with wiper inserts.
  • Wiper inserts are set to protrude by 0.03 - 0.1mm from the standard inserts.
Sub Cutting Edge Run-out
and Finished Surface
  • How to Set a Wiper Insert
One Corner Type Two Corner Type Two Corner Type

(a)One Corner Type

Replace normal insert.

(b)Two Corner Type

Replace normal insert.

(c)Two Corner Type

Use supporter for
wiper insert.
  • Sub cutting edge length has to be longer than the feed per revolution.
    *Too long sub cutting edge causes chattering.
  • When the cutter diameter is large and feed per revolution is longer than the sub cutting edge of the wiper insert, use two or three wiper inserts.
  • When using more than 1 wiper inserts, eliminate run-out of wiper inserts.
  • Use a high hardness grade (high wear resistance) for wiper inserts.