The bending machine press are used to press sheet metal using normal hydraulic jack by pedal operated mechanism. IT Consists Hydraulic Jack And Press Tool . Hydraulic Jack Is Fixed Bottom Of the Tool .
Hydraulic Jack Operating Handle Modified For
Pedal Operating Mechanism.The hydraulic press depends on Pascal's
principle: the pressure throughout a closed system is constant. One part of the
system is a piston acting as a pump, with a modest mechanical force acting on a
small cross-sectional area; the other part is a piston with a larger area which
generates a correspondingly lagoogle.com, pub-5909580570280809, DIRECT, f08c47fec0942fa0rge mechanical force. Only small-diameter tubing
(which more easily resists pressure) is needed if the pump is separated from
the press cylinder.
Pascal's law: Pressure on a confined
fluid is transmitted undiminished and acts with equal force on equal areas and
at 90 degrees to the container wall.
A fluid, such as oil, is displaced
when either piston is pushed inward. Since the fluid is incompressible, the
volume that the small piston displaces is equal to the volume displaced by the
large piston. This causes a difference in the length of displacement, which is
proportional to the ratio of areas of the heads of the pistons given that
volume = area X length. Therefore, the small piston must be moved a large distance
to get the large piston to move significantly. The distance the large piston
will move is the distance that the small piston is moved divided by the ratio
of the areas of the heads of the pistons. This is how energy, in the form of
work in this case, is conserved and the Law of Conservation of Energy is
satisfied. Work is force applied over a distance, and since the force is
increased on the larger piston, the distance the force is applied over must be
decreased.
