These days, various types of press brakes
are available in the market, including mechanical press brakes and
hydraulic press brakes. The main differences between a mechanical press
brake and a hydraulic press brake is as follows.
Hydraulic
press brakes are simple to use and versatile for punching and forming
sheet metal components. Even the tooling is easy for a hydraulic press
and the material handling cost is also less. Stamping can also be done
using economical tools on the same hydraulic press.
Mechanical presses use expensive dies and costly components, hence hydraulic presses are better. One more advantage of using a hydraulic press brake
is that they can be set up quickly, because they do not involve many
other forming functions. It also reduces secondary forming operations
such as moving the components to another machine. Hence, the hydraulic
press is preferred since the tooling and set up time is less as compared
to the mechanical press. Moreover, a hydraulic press brake is a highly
flexible punching, forming and stamping equipment. It can even punch and
form in upwards as well as downwards directions. They also help to save
manufacturing time of sheet metal parts.
The
hydroforming operation is not possible on a mechanical press brake,
because it does not have the speed control and cannot remain on the
bottom for carrying out the high pressure forming operations. The slow
speed of the hydraulic press brake helps in the hydroforming process, in
comparison with the mechanical press brake.
A hydraulic press brake provides dwelling and ram speed control which
is not possible in mechanical press brakes. The hydraulic presses can be
programmed to control the ram speed and ram position, whereas this
facility is unavailable in mechanical presses.
Further, hydraulic press brakes have exceptional speed, stroke and
force; and have therefore increased the forming capacity of sheet metal
industry. They can offer full force at any stroke position and also
provide flexibility in the dies. The ram stroke can be easily adjusted
from minimum to maximum position. Hence, a hydraulic press can have
longer strokes to include different types of dies; and can be easily set
for various operations. The major benefits of these hydraulic presses
include the following.
They are multi-purpose machines, and are adaptable for diverse
operations; deliver better force at any point of stroke; and are capable
to function at various strokes on the same machine. The ram stroke can
be simply adjusted throughout the length. Also the required speeds can
be set and also easily reset at any position. It is possible to program
and have total control over the ram stroke and position. A variety of
operations can be performed at different pressures just by adjusting the
command, pressure switch settings, or pressure control valve of the
machine.
Ultimately, hydraulic press brakes deliver precise and high quality
products. Hence, compared to mechanical press brakes, the hydraulic
press brakes are much better. Therefore a wide range of operations are
now done using hydraulic presses in various industries throughout the
world.
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