struers Accutom-50 Gebrauchsanweisung Seite 216

Accutom-50 is based on the known and
well tested technology of Accutom-5.
Sample positioning within 5 µm com-
bined with constant feed speed and
sample rotation or oscillation represents
the utmost in precision cutting. The ad-
dition of fully automatic serial cutting
and precision grinding facilities, together
with even higher wheel speeds, makes
Accutom-50 the most universal tool in
precision manufacturing of samples.
Working principle
Both Accutom-5 and Accutom-50 are
built on the same, precisely manufac-
tured, cast frame. The use of step
motors to control the movement of the
sample in both X- and Y-directions
enables very precise positioning.
Positioning accuracy of 5 µm
The high resolution of the step motor
makes it possible to position the sample
with an extraordinary precision of 5 µm.
The total movement of the sample in the
X-direction is 60 mm.
Pre-set, constant feed speed
The feed speed can be pre-set and con-
trolled in the range of 0.005 to 3 mm/
sec. This wide range allows even the
most delicate materials to be cut.
Both the pre-set and the actual speeds are
shown on the display. If the preset force
limit is reached, the feed speed will be
reduced and the process stopped if the
speed has fallen below a specified limit.
Oscillating movement is used for cutting
oblong samples, thus reducing the cutting
time considerably
Adjustable force limit
To protect thin cut-off wheels or fragile
samples, the force limit can be set to
three different levels: Low, Medium and
High.
Sample rotation or oscillation
Sample rotation or oscillation reduces
the contact area between cut-off wheel
and sample to a minimum. This results
in a decrease in frictional heat and allows
fast cutting of extremely hard materials.
Variable cut-off wheel speed up
to 3000 rpm
The motor of Accutom-5 has variable
cut-off wheel speeds from 300 up to
3000 rpm in steps of 100 rpm. This
allows both high and low speed cutting
and enables a more accurate choice of
wheel speed for different cut-off wheel
diameters.
Menu control and digital readout
Accutom-5 is operated from a touch pad
on the ergonomically designed, slanting
front. All parameters, both for positioning
and cutting, are presented on the LC-
Display.
Built-in cut-off wheel list
A list of all Struers cut-off wheels is stored
in an internal database together with their
name, respective thickness and force limit.
After the process has
been started, the display
changes and the relevant
parameters are shown
Accutom-50 can be programmed to automatically cut
series of slices from the same samples
Database with user-definable
cutting methods
After establishing a method for a specific
material, all settings can be saved in
a database and recalled at any time.
Accutom-5 has a storage capacity of
ten methods.
Built-in recirculation cooling unit
With a capacity of four litres, and a very
high through-put, the recirculation cool-
ing unit ensures a constant low temp-
erature during the cut, and an efficient
removal of cutting debris.
Enclosed cutting chamber with
safety switch
The fully transparent cover is equipped
with a safety switch to prevent the cut-
off wheel from starting whilst the cover
is open. The sample can be inserted and
positioned but the cut-off wheel itself
can only be activated when the cover
has been closed properly, thus provi-
ding maximum safety for the operator.
Accutom-50 provides the following
additional features:
Serial cutting of slices
(Multi-cut)
Accutom-50 can be programmed to
automatically cut series of slices from
the same sample. The advanced soft-
ware will also compensate for the wheel
thickness and for slight drift of the cut-
off wheel. This results in very precise
sections with an identical thickness, as
required in failure analysis or the exami-
nation of biomaterials.