|
Main
characteristic
The
lathe TB500 has been conceived to turn brake shoes on trucks, busses and
light commercial vehicles directly connected to the wheel hub
and only in presence of conventional axles.
The
turning of the brake shoes, with regards to the previously
taken internal diameter of the drum, allows to obtain a
perfect matching between shoes and drum for the full braking
efficiency from the beginning.
The operation is executed on the same direction of the
wheel rotating direction in order to compensate eventual
clearances.
Moreover,
it is extremely easy and fast the positioning of the lathe on
the wheel hub..
Centering
to the hub
TB500 has
to be centered to the wheel hub by means of some centering
rings to be placed on the wheel axle.
The
connection can be executed with or without the internal
bearing mounted, and the operation is extremely fast also
because there is not a need of a further clamping.
The
intermittent feeding
The
intermittent feeding acts on the displacement of the
tool-holder group and it allows the tools to engrave parallels
circles on the brake shoes surface.
We avoid in this way the formation of the classical
spiral effect on the turned surface which is the main
responsible of the axial displacement of the brake shoes and
of their early wear and tear.
Other
characteristics
The rotating body, performed in one only "strongly nerved" aluminum alloy casting, ensures extreme stiffness and at the same time contains at minimum the rotating masses.
The rotating body turns upon a real hardened and ground steel drive shaft, supported by two great sized bearings lubricated by permanent life grease (periodical maintenance operations free).
To the above mentioned spindle is stiffly bolted the hub connecting pipe.
The
tool-holder group is equipped with a micrometric head, that
allows the direct reading of the working diameter, and with a
double insert pivoting tool.
The
lathe is mounted on a balancing support, which is placed on
two gas springs and the whole assembly is mounted on a
trolley. This
solution allows an easier and quick connection to the hub of
the vehicle.
Structural
characteristics
-
The
body of the lathe is made by a casting of a special
hardened aluminum alloy
.
-
The
connecting pipe is made of cast
iron.
-
The
support trolley is obtained from an electro welded
framework.
|
