Page 8 - FAST_FEED_MILL_Brochure_2018_metric

Although the introduction of innovative carbide
grades and advances in the form of rake faces
has further improved progress in FF milling
cutters, the essential element of fast feed
milling – geometry – remains constant.

Chip thinning due to the cutting edge of a FF
milling cutter is the arc of a great circle (or the
chords that approximate the arc), making the
cutter a toroidal tool. The latter being rotated
around their axis produces a torus or ring-shape.
A typical representation of a toroidal tool is a
milling cutter carrying round (button) inserts.

The cutting edge angle of the cutter is not a
constant value but varies depending on the axial
depth of cut from 0 to 90°. Decreasing depth
reduces the cutting edge angle resulting in thinner
chips. The programmed feed per tooth for a
cutter with round inserts relates to the maximal

8 ISCAR