Segatrici
S.r.l
Instruction Manual
Pag.15
Edition A
6.2.5 Blade tension assembly
This assembly has to keep the blade at the right tension when the machine is running. There is a steel slide which support the
idler wheel shaft. An hydraulic cylinder, that works on the slide, keeps the band in tension. A limit switch protects the ma-
chine turning immediately off the machine if the blade brakes.
6.2.6 Band drive assembly
The band is powered by an AC motor which automatically regulates the rotation speed. Using two pulleys and three V-belts,
the motor makes the speed reducer turning. On the other end of the reducer there is the drive wheel, that is fastened to the re-
ducer using a collet locking.
6.2.7 Band brush assembly
A band brush is powered by an hydraulic motor, and it cleans the teeth removing the chips.
6.2.8 Left and right band guides.
The band guides have to :
•
straighten the blade coming out the wheel, and keep it vertical helping the blade insertion between the inserts.
•
protect the part of the blade that is not cutting.
Left guide arm :
Moves horizontally on guides machined on the bridge, and it is moved by the movement of the vise.
Right guide arm :
Fixed on the cutting bridge. It supports the cutting servo control.
Both the guide arms have carbide inserts.
6.2.9 Cutting servo-control
The Cutting servo-control automatically controls the saw feed rate. A servovalve has an extension which touches the blade
back, and registers the efforts to cut the piece. The servovalve modifies the feed rate for :
•
shape of piece
•
material hardness
•
blade wear condition
The operator, reading on the knob, is allowed to change the preferred feed rate.
6.2.10 Wheels
Made using cast iron G26, and lathe machined. They are fastened as follow :
•
the idler wheel is fastened on the band tension assembly, and it turns on ball bearings ;
•
the band drive wheel is fastened using a collect locking on the reducer shaft.
The wheels diameter is larger then the maximum material height that can be cut by the saw..
6.2.11 Band drive motor (Exhibit A07)
The machine mounts a self-cooling AC electric motor. On the shaft there is a three throats pulley, on which there are 3 V-
belts to connect motor and reducer
