CROWN
Operating manual - English
20
Copyright Silca 2001
10.3
Self-Centering Device T15
This device permits the cutting of tubular keys having a minimum outside diameter of 6 mm up to a
maximum diameter of 12,5 mm.
H
EIGHT
V
ARIATIONS
The machine setting (as shown in fig. 16) has a point “X” between the upper part of the wedge (H) and
the rotation axis of the key on device, with a radius of 4,1 mm. equal to a greater shank diameter
(e.g.CHICAGO MAS. 8,65 mm.) or lesser shank diameter (e.g. FORT MAS. 7,62 mm.). In such a case
proceed as follows:
1) loosen knob (M).
2) turn screw (G) in the direction required, bearing in mind that a complete turn of the screw gives a
height variation of 0,1 mm.
3) when the variation required has been obtained, tighten the knob (M).
4) cut the two opposite grooves. Without removing the keys, check the two diameters, which should
be identical.
Important:
the machine must be zeroed in order to work with the setting based on an average
shank diameter of 8,2 mm (with a thickness of 1 mm).
Fig. 16
K
K1
4,1
=
SHANK
RADIUS
8,2
=
average shank diameter
basic setting
H
I
G
M
cutter
T 15
Hold the T15
well up against its rest
locking with (M)
(H)
A
section
thickn.
1
thickn.
2
thickn.
6
X
=
27,35
Y
=
35,4
thickn.
1