Cembre LD-41P Operation And Maintenance Manual page 18

8. DRILLING
Check engine oil level before operation (see § 13.2.4).
Switch on the cooling system before starting the drill (see § 4).
8.1) Drill fi tted with "short" type broach cutter (for drilling thicknesses of up to 25 mm).
The drilling sequence may be started with the drill fi tted with the broach cutter (§ 6.1),
clamping end piece (§ 7.1), positioning template (§ 7.3), the drill being clamped to the rail
(§ 7.4), as follows:
8.1.1) Connect the female quick-coupling of the SR5000 coolant unit to the male cou-
pling (35) on the drill.
8.1.2) Open the tap (02) fi tted on the coolant unit hose.
8.1.3) Using the lever (36) bring the guide
bit almost in contact with the rail
(Fig. 17a);
keeping the release pawl (39) pressed,
release the lever from its cup and
return it to the initial position
(Fig. 17b), which will enable the travel
of the lever (36) to be used in the
most advantageous way.
FIG. 17 – DRILLING
Fig. 17b
39
Fig. 17a
36
Fig. 17c
17
8.1.4) Start the engine, following instructions § 11.
8.1.5) Proceed to drill by initially applying light pressure on the lever (36), increasing
the pressure progressively, avoiding jolts, and fi nally relieving the pressure in
the exit phase. When drilling close to raised markings on the rail the initial
pressure must be extremely light until the markings disappear, otherwise the
cutter may be damaged.
8.1.6) The guide bit will enable the lubrocoolant to be discharged throughout the drilling
process.
8.1.7) When drilling has been completed, fully retract the spindle, stop the motor by
pressing the switch to "OFF" position, and make sure that drilling swarf is removed
before recommencing drilling.
8.1.8) After drilling it is advisable to remove with the brush all swarf from the broach cutter
or spiral bit and spindle area.
8.2) Drill fi tted with "long" type broach cutter (for drilling thicknesses of up to 50 mm).
Follow the sequence described in § 8.1, taking care to position the drill on the rail by keeping
the spindle fully withdrawn.
36
02
35
39
FIG. 18 – DRILLING
18
11