14
21
FIG.10 – ASSEMBLING THE
BIT-SPACER
UNIT
FIG. 9 – ASSEMBLING THE SPIRAL BITS
DPE
07
71
30
FIG. 11 – MANUAL SPINDLE
ROTATION
Start drilling
with discharge of
lubrocoolant
Drilling
Finish drilling
with removal of swaf and
switching off of
lubrocoolant
Approach
FIG. 20 – COOLING DRILLING WITH BROACH CUTTER
8.3) Rail drill fi tted with special spiral bit
Follow the sequence described in § 8.1, taking care to position the rail drill on the rail by
keeping the spindle fully withdrawn. Bear in mind that the cooling circuit, instead of be-
ing automatically opened and closed by the pilot bit, is kept open at all times by the DPE
spacer fi tted on the spigot of the spiral bit; it must therefore be activated, by opening the
tap (02), before starting to drill, then switched off after drilling by closing the tap.
FIG. 20a – COOLING DRILLING WITH SPIRAL BIT
* use only for APE..., do not required for APED...
6.2.2) Insert into the spindle shaft, the DPE spacer required to activate the coolant system.
If it necessary to use an APE... adaptor, the bit must fi rst be fi tted into the corre
sponding
APE adaptor and locked with the appropriate grub screw, then the DPE
spacer
inserted.
Note: Adaptors type APED… (e.g. APED 3/8Y) do not require use of DPE
spacer.
6.2.3) Insert the bit-spacer unit in the spindle shaft so that the two engaging dogs on the
bit spigot line up with the grub screws. Press the bit-spacer unit home against
the inner seat of the spindle: this will enable the DPE spacer to open the coolant
circuit (see Fig. 10).
6.2.4) Clamp the bit by fully tightening the two grub screws (18) using the 4 mm male allen key.
DPE
*
18
Bits PE ... (e.g. PE70)
Bits PE ... (e.g. PE 190)
APE ...
DPE spacer *
Spiral bit
APE or APED adaptor
* use only for APE, not required for APED