Общий каталог Mitsubishi 2020 - 2021 - страница 1738

y FINISHED SURFACE

a Cutting Edge Run-out Accuracy

Minor Cutting Edge Peripheral Cutting Edge

Cutting edge run-out accuracy of indexable inserts on the cutter body greatly affects the surface finish and tool life. Chipping Due to Vibration

Cutting Edge Run-out and Accuracy in Face Milling a Improve Finished Surface Roughness Usually the minor cutting edges are set parallel to the face of a milling cutter and theoretically the finished surface accuracy should be maintained, even if run-out accuracy is poor.

Actual Problems Countermeasure

Table Feed Cutting edge Wiper Insert

run-out. *

• Minor cutting edge Machine a surface

Cutting Edge No. inclination. that has already

• Cutter body been machined by accuracy. normal insert in

and Finished Surface chattering.

• Replace one normal insert with wiper insert.
• Wiper inserts are set to protrude by .0012 ― .004 inch from the standard inserts. Value depends on the cutting edge and insert combination.

a How to Set a Wiper Insert

• Wiper edge length has to be longer than the feed per revolution.

* Too long wiper edge causes chattering.

Body Body Body

Locator Locator Locator When the cutter diameter is large and feed per

revolution is longer than the wiper edge, use two or three wiper inserts. P

• When using two wiper inserts or more, eliminate run-out of wiper inserts.

wiper insert.