Cutting edge runout accuracy of indexable inserts
on the cutter body affects finished surface accuracy and tool
life greatly.
Cutting Edge Runout and Accuracy in Face Milling
Improve Finished Surface Roughness
Since Mitsubishi Materials' normal sub cutting
edge width is 1.4mm, if sub cutting edges are set parallel to
the face of a milling cutter, theoretically finished surface
accuracy should be maintained even if runout accuracy is low.
Replace one or two standard inse-
rts with wiper inserts.
Wiper inserts are set to protrude by 0.03-0.1mm from the
standard inserts.
Sub Cutting Edge Runout and Finished Surface
How to Set a Wiper Insert
(a)One Corner Type
Replace standard insert.
(b)Two Corner Type
Replace standard 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 one wiper inserts, eliminate runout of wiper
inserts.
Use a highly wear resistant grade for wiper inserts.
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