7
6.
Drilling, countersinking or reaming: The units rapid advance and retraction movements should not
exceed a speed of 100 mm/sec. (0,33 fps) to ensure smooth operation and proper signal processing.
This is particularly important when the unit is equipped with a linear transducer. Regulation of the speed
is possible by fitting the hoses to the units feed cylinder, Port 1 and 2, with throttle-check valves. Place
the throttle-check valves as close as possible to the unit. See Fig. 4a.
Tapping: The rapid advance retraction should not be too high. Regulation of the speed is possible by
fitting the hose to the units feed cylinder advance, Port 1, with a throttle-check valve. Place the throttle-
check valve as close as possible to the unit. See Fig. 4b.
Fig. 4a.
Fig. 4b.
7. Units delivered with pneumatic limit switches (choosen when ordering) allow automatic drilling
operation, pneumatically controlled in accordance with Fig. 5 where the valve (marked Start) is actuated
manually. Should repeated automatic drilling be desired, this valve must be replaced by a pneumatically
controlled valve which receives its activation signal from the control system of the processing machine in
which the unit is installed. Valves are V4 and V5 are pneumatic limit switches, which are delivered
mounted on the unit. Valve V1 shall be of 4-way, 2 position type and the the dimension of valve V1 shall
be 1/8" when the valve is used for a single unit.
Fig.
5.
8. If the unit is delivered with electrical switches, proximity switches or a linear transducer (choosen when
ordering), valve V1 shall be electrically controlled type of 4-way, 2-position type. The dimension of the
valve shall be 1/8" when the valve is used for a single unit. See Fig. 6.
Fig.
6.
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