Struers Discotom-2, Instruction Manual

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Discotom-2
Instruction Manual
19
Autofeed is provided with the following controls:
PRESSURE (fig. 6.1)
Pressure regulating valve with manometer indicating the cutting
pressure.
AUTOMATIC / STOP

/MANUAL

(fig. 6.2)
Removes or admits compressed air to the oil reservoir. When set to
STOP / MANUAL Discotom may be operated without Autofeed.
FEED/RETRACT (fig. 6.3)
Controls the movement forwards or backwards of the cut-off wheel.
FEED (fig. 6.4)
Valve controlling the speed of the cut-off wheel in the forward
direction.
Before cutting, adjust the cutting pressure between 4 and 6 bar,
depending on the hardness and size of the sample:

Close the FEED valve.

Set FEED/RETRACT to FEED.

Turn on the main switch.

Open the FEED valve slowly. When the cutting commences,
adjust the speed so that it corresponds to normal feed speed.

When the cutting is completed, return the cut-off wheel by setting
FEED/RETRACT to RETRACT.
Where many identical specimens have to be cut, it is worthwhile,
after completion of the cut, to set AUTOMATIC/STOP/MANUAL to
STOP/MANUAL instead of returning the cut-off wheel to the extreme
rear position. The operator may then himself push the cut-off wheel
so far back that it only just disengages the specimen, after which he
may then position a new object, set AUTOMATIC / STOP / MANUAL
to AUTOMATIC and start Discotom. By this procedure the cut-off
wheel does not have to travel all the way from its rearmost position
up to the object, a very time consuming operation, particularly when
the cut-off wheel is worn.
The alternative - re-adjustment of the feed-speed to increase the rate
of feed - can be avoided, and thus completely identical results can be
obtained in successive cutting operations.
Operation
Controls
Cutting with Autofeed