A hydraulic press is a press machine that uses hydraulic pressure, or fluid pressure, in order to exert force on an object. Also known as Bramah presses, after their inventor Joseph Bramah, hydrolic presses depend on Pascal's principle; mainly, that the pressure throughout a closed system will act with equal force on all areas. As both the most common and most efficient type of industrial press, hydraulic presses apply a large lifting or compressing force that cannot be achieved using pneumatic presses or mechanical presses.
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Macrodyne Technologies Inc.Concord, ON 905-669-2253 Macrodyne Technologies, as privately-held hydraulic press manufacturers, is an established leader in the industry. Offering premium solutions that are designed and built in-house, Macrodyne meets all requirements with efficiency and speed. All products and services, including up-grades and rebuilding, are provided for improved productivity. Please call Macrodyne Technologies today.
Grimco Presses Inc.Paterson, NJ 973-345-0660 Grimco is one of the industry`s most experienced hydraulic press manufacturers, offering standard and custom solutions. Unlike most other companies, Grimco offers a one year guarantee against material and workmanship defects. By standing behind their products 100%, Grimco ensures each piece of equipment is made with skill and quality parts. Please contact Grimco today.
Phoenix Hydraulic Presses, Inc.Hilliard, OH 614-850-8940 Phoenix is a leading technologically advanced hydraulic press manufacturer that has been satisfying customers since 1987. Phoenix upholds high manufacturing standards for all of its products and services and provides affordably priced press solutions to all of its valued customers. Please contact Phoenix today with any and all questions you may have-you'll be glad you did!
Betenbender Manufacturing, Inc.Coggon, IA 319-435-2378 Since 1972, Betenbender Manufacturing has manufactured hydraulic press solutions of the highest quality. Betenbender can also be contacted for used equipment, but be aware that its inventory is always changing. Betenbender continually updates its designs and equipment to meet its customers` needs. Contact Betenbender today or visit their website for a complete listing of quality solutions!
Toomey Associates, Inc.Westfield, MA 800-762-5192 Toomey Associates, Inc. is an industry leader in quality manufactured hydraulic presses. Toomey specializes in custom applications including portable systems, workholding fixtures, special pump and valve packages and lifting systems. Toomey Associates is an authorized warranty repair center and full service shop. Pleas visit Toomey Associates website today!
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A hydraulic press is a type of power press. Power presses can be pneumatic, hydraulic or mechanical. Pneumatic presses serve applications similar to hydraulic presses, including piercing, metal working, crimping, stamping, bending and punching. However, pneumatic presses use compressed air in order to gain movement and are not capable of creating the extremely high pressures of hydraulic presses. The various types of hydraulic presses are typically differentiated not only by application but by design and operation as well. C-frame presses can be operated manually or automatically and take up less floor space than most hydraulic presses due to their narrow but sturdy c-shaped frame, generally made from steel, which provides minimal deflection. H-frame presses differ from C-frame presses as a result of the welded H-shape of their frame as well as being able to handle multiple operations. Laminating presses are manually operated compression presses with two openings that are known as plates. One is used for heating whereas the other is used for cooling, thus making the lamination process faster as a result of the simultaneous cooling of one platen while heating the other. Transfer presses work by feeding flat plastic, rubber or metal blanks automatically into the right end of the press. From there, feed bar fingers take the part and move it from die to die. Most machines are designed to handle extremely heavy loads, reaching 3500 tons but they can also be small machines which can handle about 15 tons.
Hydraulic presses are powered by hydraulics, which provide force through fluid pressure. Consisting of the main components used in a hydraulic system, the basic form of a hydraulic press is comprised of a set of cylinders, pistons, also called punches, hydraulic pipes and a stationary anvil, or die. The piston, which is a mechanical device that provides a plunging or thrusting motion, uses liquid under pressure to exert a compressive force upon the anvil. The liquid is first forced into the cylinder by a pump or lever. The hydraulic system consists of two cylinders; the fluid, usually oil or water, is poured in the smaller of the two cylinders. This cylinder is often referred to as the slave cylinder. The small piston is located in this cylinder and is pushed so that it compresses the fluid that will then flow through a pipe into the larger cylinder, also known as the master cylinder. The pressure of the compressed liquid is then exerted on the larger cylinder and the larger piston in the master cylinder pushes the fluid back to the smaller cylinder. The force applied on the fluids in the smaller cylinder results in a larger force when pushed in the master cylinder. This force brings the punch in contact with the die, and deforms the material into the desired product shape. Typically constructed from stainless steel and other durable materials, hydraulic presses are available in both single and multi-station configurations. Single station presses consist of a single set of press tools, a die and punch, inside of a table. Multi-station presses have multiple sets of press tools, which either perform the same operation on many materials or perform various press operations on single or multiple materials as they move between stages.
Alternatives to hydraulic presses include mechanical presses, electric presses and pneumatic presses. Mechanical presses are driven by a flywheel which stores energy then releases it, thus transferring energy to the main slide by the use of mechanisms such as a crank, eccentric, knuckle joint or toggle. In a mechanical press, the stroke of the slide is adjustable within the limits of daylight. In addition, the strokes are also classified by the number of slides or ram they have, which can be single, double or triple action. All-electric presses are fairly recent developments, offering more efficient drive systems due to the mechanical linkage of the ram with the drive motor. This ensures that the controller is able to give a signal to the motor for a specific speed. If the motor is not overloaded then that speed will be reached. Also, the elimination of hydraulic fluid variations is beneficial because hydraulic fluid changes across time and temperatures, they can even vary within a single day. Pneumatic presses are advantageous because they can have stroke cycles of up to 400 strokes per minute, or SPM. Even at high stroke speeds, pneumatic presses are able to offer a controlled flow rate that makes them ideal for applications in which the material flow rate, or ram velocity, is crucial. Pneumatic presses do not convert rotary motion to linear motion and therefore have fewer moving parts than hydraulic press or machine presses. However, for applications requiring shear force and the ability to reach high pressure, hydraulic presses remain the best solution.
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A device that converts fluid power into mechanical movement.
- The amount of time necessary
to wait between the molding and appraisal of molded part properties.
- A defect at the parting line where the material has shrunk inside the part.
- The
flat surface that supports the material being worked.
- Plates attached to
the rods that carry the platens or any structure mounted to the bed of
a press. It is sometimes removable.
- Any one of several
types of valves that allows flow in only one direction.
- The lingering deformation after removal of the force, which compressed the section. An example is when one uses a fingernail to depress a molded sample; the impression that remains after a time is the compression set.
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A feature of hydraulic systems that turns the system off and on at set
pressure points.
- The cylinder,
piston, ram, seals and packing of a press.
- The largest capacity,
vertically, that the press can handle or the vertical clearance from the
underside of the ram to the top of the bolster. The ram must be in its
maximum up position.
- The tooling used in a
press for shearing, punching, forming, drawing or assembling metal or
other materials.
- The final opening through
which injected material flows in order to enter a part cavity.
- Circulates air or water to maintain oil at operating temperature.
- Pressure
caused by fluid under applied force.
- Actuation devices that produce linear motion and force through the use
of pressurized hydraulic fluid.
- Pumps that use mechanical energy to deliver high-pressure fluid flow
to the outlet through pressurized fluid.
- A device that restricts the escape of fluid or entrance of foreign
material.
- A device that contains and transfers the flow and pressure of
hydraulic fluid in hydraulic power systems.
- Removes the part
from the punch/die.
- A press
function that allows it to operate continuously under 10% of its maximum
rated force, as well as to ensure a preheat function at reduced pressure.
- The place where the
mold attaches. It is a series of flat surfaces where one surface is stationary
and the other is moving.
- Long stem or
pole that connects two pieces of the press so that they act together.
- With the ram full
down, it is the clearance over the bed.
- The main feed guide
that runs from the outer face of an injection or transfer mold gate into
a single cavity mold or to runners in a multiple cavity mold.
- Feature that
controls the length of a stroke and can be adjusted accordingly.
- Distance
between the frame member behind the bed to the vertical centerline of
the ram. This measurement affects the size of the piece that can be used.