Page 17 - Iscars_World_Brochure_2019_1

The FMR method is based primarily on two with maximizing its axial component, which acts
principles: the geometry of a milling cutter and toward the axis of the machine tool spindle, i.e. the
the high-speed feed drive of a machine tool. direction of the maximum machine tool rigidity. This
A typical fast feed tool features a small cutting edge
improves machining stability.
Tools For High Metal angle, normally 9-17°. This design characteristic Increasing feed per tooth means greater feed speed
that requires the appropriate feed drive of the machine
results in three important outcomes. The first is the
tool. In the above example of high feed milling low-
possibility of considerably increasing feed per tooth
Removal Rates due to a chip thinning effect. For example, in face alloy steel, the feed speed may be 7000-9000 mm/
milling low-alloy steel, 0.2 mm/tooth (.008 ipt) is a
min (275-355 ipm) – the next-higher order versus
near maximum value feed, but high feed milling the
conventional values.
same material with a 2 mm/tooth (.08 ipt) feed is Introducing FMR substantially changed the concept
normal. The second is a shallow depth of cut (DOC) of rough milling. Instead of intensive material removal
that ensures this geometry for the tool. Milling with at large depths and width of cut by using high-power
reduced DOC diminishes cutting force and power machines, the method proposed extremely productive
consumption. And the third point relates to minimizing milling at shallow depths by low-power machines
the radial component of the cutting force combined fitted with a cutting tool that runs very fast.

HIGH FEED

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