Struers Discotom-60 Mode D'emploi page 49

Error
Cutting Problems
Discoloration or burning of the
workpiece.
Unwanted burrs.
Cutting quality differs.
Cut-off wheel breaks.
Discotom-60 /-65
Instruction Manual
Explanation
The hardness of the cut-off wheel is
inappropriate for the hardness /
dimensions of the workpiece.
Inadequate cooling.
Cut-off wheel too hard.
Feed speed too high at the end of
the operation.
Lack of support for the workpiece.
Cooling water hose clogged.
Incorrect mounting of the cut-off
wheel.
Incorrect clamping of the workpiece.
Cut-off wheel is too hard.
Feed speed is set too high.
Inadequate cooling.
Action
Reduce rotational speed (D-65 only)
or change wheel. See
"Consumables" section, under
heading 'Cut-off Wheels'.
Check that there is sufficient water
in the Recirculation Cooling Unit.
Reduce rotational speed (D-65 only)
or change wheel. See
"Consumables" section, 'Cut-off
Wheels'.
Reduce the feed speed near the
end of the operation.
If possible, support the workpiece
on both sides.
Clean the cooling water hose and
the cooling tube. Check the water
flow by turning the cooling valve to
cleaning position.
Check that the bore/centre hole has
the correct diameter.
Check cardboard washer on both
sides of the cut-off wheels and
replace if worn. The nut must be
tightened properly.
Make sure that only the left quick-
clamping device is tight.
The spring clamp to the right should
only press lightly.
Use the vertical clamping system if
the workpiece is an irregular shape.
Reduce rotational speed (D-65 only)
or change wheel. See
"Consumables" section, 'Cut-off
Wheels'.
Reduce the feed speed.
Check that there is enough water in
the cooling unit.
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