Pilous 20875-0204, Instruction Manual

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5.2. Saw Blade Feed into Cutting Position
5.2.1. Saw Blade Feed into Cutting Position - Control Valve
The control valve enables stepless setting of the speed of the saw blade
feed into cutting position, or the stabilization of the band saw head in any
position by mechanical closing. The examples of speed of descent are
shown in chapter. 6.6. The optimum value can also be determined very
5.3. Hydraulic Unit
5.3.1. Hydraulic Unit
The hydraulic unit is installed in the machine base. It serves for ele-
vating the band saw head in the upper initial position after the cut has
been completed, for feeding the saw blade to the cutting position and
clamping and opening the vice. When the MASTER SWITCH is on,
the HYDRAULIC UNIT - START button serves for activating the
electrical system of the machine and at the same time for starting the
hydraulic unit. When the band saw head is in the lower position and
easily by listening. The saw blade movement must be noiseless, free from
vibrations. This condition can be achieved if the pressure force is increased
or decreased band (speed of descent of saw head). The condition for setting
the optimum pressure is the selection of the correct cutting speed of the saw
blade and the optimum size of the saw blade teeth.
ACCELERATION
OF BAND SAW
HEAD DESCENDING
SLOWING-DOWN
OF BAND SAW
HEAD DESCENDING
STOPPING
OF BAND SAW
HEAD DESCENDING
the switch for the band saw head stroke is set to position 1, the band saw
head will be raised to the upper position. If the switch is left in position 1
between the cuts, the band saw head with the saw blade will be automati-
cally raised to the upper position after the cut has been completed. If the
switch is left in position 0, the band saw head with the saw blade stays in
the lower end position after the cut has been completed. This enables to set
the height of the band saw head (see chapter 5.4.). A detailed description of
the hydraulic unit is given in a separate chapter.
5.3.2. Setting of Vice Clamping Force
The hydraulic unit is provided with a PRESSURE CONTROLLER, which
enables the setting of the required vice clamping force between 13-35 bar
depending on the workpiece type. When the PRESSURE CONTROLLER
is turned to the left, the pressure decreases; when it is turned to the right,
the pressure increases (see figure). The set pressure is displayed on the vice
pressure indicator. If the pressure is set below 13 bar, the SAFETY PRES-
SURE CONTROLLER T.S. does not switch on and the saw blade does not
start. The pressure in the system is ascertained on VICE PRESSURE INDI-
CATOR, by turning the pressure controller to the maximum (turn to the
right).