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5 Cutter positioning

To avoid a clash between the tool (or the internal
edge of the insert) and the workpiece, the distance
E between the tool axis to the workpiece axis
w
should be
where w is the width of the wiper flat of an insert.

This recommendation takes cutter positioning
(fig.3) to the safe side. As can be seen in fig.1,
even if or even lower (depends on the
workpiece diameter and the geometry of the tool),
no clash will occur.

A case, at which the cutter body is cleared with
respect to the workpiece, and the inserts have an
internal cutting edge (like for ramping operations),
allows machining with E =0.
w

Fig. 3. Cutter Positioning

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