T120C
37
Each machining must be separately considered and the most practical guard for the
peculiar machining must be selected.
The min. hole in the table, too, shall depend on the kind of tool, on the blade projection
and on the height of the cutter positioning.
The supplied reduction rings are very useful for getting a hole as small as possible. This
is to prevent the piece from swinging and being stuck in the blades while passing on
the hole.
The guard must wind up as much as possible the cutter depending on the type of ma-
chining.
The shaper with straight guide is equipped with a movable feeder that can be used for
covering the cutters on the longest length, and often is the best protection for the ma-
chine.
These feeders can be easily adjusted for suiting the piece dimensions, and must not
originate entangling risks.
If a feeder is not used, some pressing devices forming a tunnel where the piece can
be introduced are adapted for the guide machining and for the whole piece length, if
they are used with a dummy guide or other means reducing the distance between the
guides.
4.6.8
Guide machining with cutting through all the piece length
A machining of this kind is carried out using a straight guide in most of the cases, as
the pieces have a rectangular section through all their length.
The pieces can be guided by the angle formed by table and guide.
The horizontal and vertical pressing devices can be arranged to form a tunnel through
which the piece can be guided.
The next piece can be used for pushing the previous one, and the last piece will be ma-
chined using a pusher.
For machining thin panels only the pressing device apex can be used, if its thickness
is suitable.
Special slides must be used according to the piece length.
On a vertical shaft shaper the distance between the two halves of the straight guide
must be sufficiently wide to leave the necessary space for the cutter.
This causes a useless exposure of the blades, the cutter and the shaft; further, the
piece end can touch the outfeed guide edge.
These risks are eliminated by using a dummy guide or with the alternative of a device
having the same features and closing the distance between the guides.
It is recommended to carry out the tool passage through the dummy guide by a screw
adjustment and not by pushing the guides towards the tool.
4.6.9
Interrupted machining
Guide machining where the cutting never involves the whole piece length.
A machining of this kind is called interrupted, the cutter must penetrate in one side in-
stead of starting from one piece end and/or interrupting the machining before the piece
end.
Summary of Contents for T120
Page 1: ...USE AND MAINTENANCE INSTRUCTIONS T120 Edition 12 2003 Code 62900306...
Page 2: ......
Page 12: ...T120C 6...
Page 15: ...T120C 9...
Page 30: ...T120C 24...
Page 47: ...T120C 41 50 Fig 23 Pusher 4 7 2 1 Guide adjustment Fig 24 Guide machining guard...
Page 58: ...T120C 52 Fig 32 Accessories for the guide machining...
Page 64: ...T120C 58...
Page 70: ...T120C 64...
Page 77: ...T120C 71 7 2 OVERALL DIMENSIONS 10000 8000 6000 4500 3000 min 1 1300 Fig 39 Overall dimensions...
Page 78: ...T120C 72...
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