25
11.8) Clamping the drill to the rail web
The drill has a rapid rail engagement/release mechanism and specially shaped positioning templates for each rail
type which facilitate precise and certain location of the part to be drilled.
To fully exploit the special features of the engagement device, we recommend calibrating it to the rail type to be
drilled as follows:
Withdraw the spindle shaft (07) completely by means of the lever (36).
Insert the threaded bush (39) of screw (11) into its seat (A) in the moving arm (17) (Ref. to Fig. a); use the hand-
wheel (12) to completely open the moving arm.
Place the drill on the rail at the point to be drilled and clamp it by
tightening the hand-wheel fully down
(12):
the positioning template will automatically position the cutting tool in line with the designated axis; if precise
positioning is necessary to the longitudinal track axis, use the reference pin (01).
For rapid drill release, simply back-off the hand-wheel (12) by approximately two complete turns, and while
supporting the drill by its handle (09), pull the hand-wheel towards you. The threaded bush (39) will disengage
the seat (A) in the moving arm (17) (Ref. to Fig. b) which will open automatically, freeing the drill.
In this way, the operator can rapidly remove the machine from the track in case of danger, or move on to drill
another
hole.
Thus, the next track engagement operation will be considerably simplifi ed:
after positioning the drill at the point to be drilled, simply push the hand-wheel forwards so that the threaded
bush (39) engages the seat (A) of the moving arm. Now, a few turns on the hand-wheel will be suffi
cient to engage
the drill correctly on the rail.
When the drill is fi tted with “long” type broach cutter (for drilling thickness up to 50 mm) take care to posi-
tion the drill on the rail by keeping the spindle fully withdrawn.
36
09
39
11
17
A
17
39
11
FIG. b
12
17
07
01
FIG. a