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Example No. 2.
Is it possible to make a bevel of 8x8x45
°
with 12mm-thick material?
To perform the correct adjustment, it is necessary to set the difference between the
height of the required bevel and the material thickness on the scale. This means: 12-8=4.
The scale should thus show 4 mm. To check whether the machine will not be overloaded,
use the table (fig. 5.3.6).
It can be read from the information that the scale can show the value of min. 3.5mm.
This means that this bevel can be made because 4 mm is more than 3.5 mm and with this
settings, the total bevel hypotenuse (dimension P in fig. 5.3.4) does not exceed the
permitted 12 mm.
But since the P hypotenuse exceeds 10 mm, it is advisable to make the planned bevel in
two steps. Step no. 1. C=8mm. Step no. 2. C=4mm.
Example no. 3:
Can we make the bevel of 6x6x45
°
with the 8mm-thick material?
For the correct adjustment, we have to set the difference between the required bevel
height and the material thickness on the scale (position C, fig. 5.3.5), i.e 8-6=2.
Therefore, 2 mm should be on the scale. To check if the machine is not overloaded, use
the table in fig. 5.3.6.
It can be read from the table, that the dulling for materials whose thickness does not
exceed 8 mm can be set without any limitations. This means that the bevel can be
created despite of the fact that we have set 0 mm on the scale and the sheet will be sharp
bevelled, the total bevel hypotenuse (dimension P in fig. 5.3.4), because the bevel does
not exceed the permitted 12 mm.
Adjustment of Workpiece Holder Cylinders
To ensure the correct operation of the machine, the workpiece holder cylinders (position G,
fig. 5.3.5) must exercise light pressure on the workpiece. Their adjustment shall be done as
follows:
•
Turn the hand wheel in the upper part of the workpiece holder (position F, fig. 5.3.5)
which adjusts the height of holder cylinders.
•
Make adjustment so that the cylinders exercise light pressure on the workpiece. Make
sure that the position is correct; read the value of the bevel height (dimension A in fig.
5.3.3) on the respective scale (position E, fig. 5.3.5).
5.4. Bevelling
Important:
Activities described in this section must be performed only after adjustments referred to
in the preceding sections.
To ensure correct operation of the machine, make sure the adjustments have been made
correctly. No indicated situation must occur: the workpiece subject to machining must be
placed relative to the lower cylinders and holder cylinder as described in situations 1 and 4 in
fig. 5.4.1.
