Page 12 - Iscar_Article_Brochure

In common with the aforementioned FF cutters,
they also carry the H600 WXCU inserts – another
example of customer-friendly versatility - the same
insert is mounted in two functionally different
kinds of milling tools.
The second type of MF cutters is the HELIDO
1200 UPFEED: this range of face mills with
double-sided hexagonal inserts has 12 cutting
edges. The cutters are intended for productive
milling plane surfaces and have the ability to
machine near to the straight wall of square
shoulders. High MRR and cost effectiveness per
insert cutting edge make the cutters an attractive
tool for upgrading low power machines to triple F.
In consideration of fast feed milling and its
moderated derivative, the main applications are:
• rough face milling especially if a machining
allowance (material to be removed) is high
and a machined surface has relatively
big dimensions
• rough milling of cavities and pockets
• sculpturing by side plunging
In the majority of cases that are connected with
the listed applications, the smart decision of
introducing fast milling into a process significantly
improves productivity and cuts production costs.
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Questions & Answers
Q: Can fast feed milling be applied to high
temperature alloys, in particular to titanium?
A: Definitely yes, on condition that the tool
(cutting geometry, carbide grade) and the cutting
data are chosen correctly. For example, when FF
milling titanium alloys by HELIDO 600 UPFEED
indexable milling cutters, HP-type inserts should
be used and the recommended starting feed per
tooth employed.
Q: Can we operate a fast feed tool for rough
milling a full slot?
A: Yes, however, the cutting speed and the feed
per tooth should be reduced when compared
with the usual recommended values for the
machined material.
Q: Is FF milling suitable for hard steels?
A: Yes, but substantial reductions in the feed per
tooth starting values of fz will be in average 3-4
times less compared to the soft steels.
Q: A virtual “radius for programming” of a FF tool
is specified in catalogues and guides, what does
this mean
A: FF tools have a specific shape that differs from
ordinary milling cutters. For CNC programming
purposes users may consider the tool like a cutter
with a corner radius.
Q: When milling, the high overhang of a tool
normally requires reduced cutting speed and feed
per tooth. Is it true for the FF technique?
A: Regarding the speed – yes; and speaking
about the feed, although, our experience shows
that rather than reduce feeds, a more effective
method is to reduce the depth of cut and operate
at the unchanged fz. This not only improves the
stability of the tool and enhances chip evacuation,
it also reduces recutting
(in many cases the high tool overhang is a direct