Catalog_Freze_CNC_VHF

MILLING
CUTTERS
ENGRAVING
TOOLS
USING TOOLS
■ Always choose a milling cutter which is suitable for the material
which you process. Please note the corresponding icons and
more detailed information in the description texts and use our
recommendation matrix on page 22.
■ The cutting edge length of the tool should be as short as
possible and as long as necessary. It should be clamped as deep
as possible into the collet chuck.
■ If your material is not listed, select the material from the corresponding
main category (plastics, non-ferrous metals, ...) that
most closely matches your material in terms of hardness.
plastics
ferrous
metals
Hartholz
non-ferr.
metals
composites
wood
DEBURRING
TOOLS
ROUTER
BITS
THREAD
CUTTERS
DRILLS
DIAMOND
TOOLS
THE RIGHT NUMBER OF TEETH
■ Single tooth cutters offer the largest open space in the chip flute
and thus counteract the clogging of the cutter by material chips;
so they have the lowest risk of clogging.
■ The more cutting edges a milling tool has, the more the open
space decreases, but at the same time, the wear is distributed
over several cutting edges. The cutter also runs rounder and the
surface becomes smoother.
■ For plastics and non-ferrous metals, the single tooth cutter is the
best option. A double tooth cutter is recommended when you
are working on thermosetting plastics or harder sorts of aluminium.
We recommend multi-tooth cutters alsmost exclusively for
ferrous material.
Cross-section of triple
tooth cutter: Three
cutting edges need much
more space.
SETTING THE MACHINING PARAMETERS
Given the multitude of parameters that interact with each other, it
is not possible to provide general information about the tool parameters,
so here are just a few general tips. In any case, you must
comply with all safety and security regulations of the machine!
■ In order to set optimal values for lowering speed, immersion
depth, feed rate, and spindle speed when machining your workpieces,
a large number of factors play a role, which you will find
in the adjacent guiding questions.
■ When you set the operational parameters, you should approach
from the safe side, so you should choose at first for most materials
a lower lowering speed, immersion depth and feed rate and
then increase them gradually.
Guiding questions:
‹
›
Cross-section of single
tooth cutter: It has a great
open space.
› What material is the workpiece
made of?
› How is the workpiece fixed?
› Type of coolant/lubricant?
› Power/maximum rotational speed of
the spindle?
› Minimum/maximum feed rate of the
machine?
› Stiffness of the machine?
LANCES
AND KNIVES
ACCESSORIES
CHOICE OF THE MILLING DIRECTION
■ The cutting edge runs in the counter direction as well as in most
parts of the same direction against massive material. However,
immediately before the exit, there is not much material left. So
the last bit will often be rather torn off instead of being cleanly
cut. Therefore the counter direction becomes smoother than the
same direction.
■ Thus we recommend to mill internal contours clockwise and external
contours counterclockwise.
■ However, a comparison is always recommended, as the effect
varies depending on the machine, material and tool geometry.
relative material movement
chip size
cutter
direction
worse cutting edge
same direction
counter direction
better cutting edge
140