A hydraulic press is a

machine press A forming press, commonly shortened to press, is a machine tool that changes the shape of a work-piece by the application of pressure. The operator of a forming press is known as a press-tool setter, often shortened to tool-setter. Presses ...

using a

hydraulic cylinder A hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in construction equipment ( engineering vehicles ...

to generate a compressive force. It uses the hydraulic equivalent of a mechanical

lever A lever is a simple machine consisting of a beam (structure), beam or rigid rod pivoted at a fixed hinge, or '':wikt:fulcrum, fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, l ...

, and was also known as a Bramah press after the inventor, Joseph Bramah, of England. He invented and was issued a patent on this press in 1795. As Bramah (who is also known for his development of the flush toilet) installed toilets, he studied the existing literature on the motion of fluids and put this knowledge into the development of the press.

Main principle

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 large mechanical force. Only small-diameter tubing (which more easily resists pressure) is needed if the pump is separated from the press cylinder.

Application

Hydraulic presses are commonly used for assembly and disassembly of tightly-fitting components. In manufacturing, they are used for

forging Forging is a manufacturing process involving the shaping of metal using localized compression (physics), compressive forces. The blows are delivered with a hammer (often a power hammer) or a die (manufacturing), die. Forging is often classif ...

clinching In metalworking, clinching or press-joining is a bulk sheet metal forming process aimed at joining thin metal sheets without additional components, using special tools to Deformation (engineering), plastically form an interlock between two or mo ...

, molding, blanking, punching, deep drawing, and metal forming operations. Hydraulic presses are also used for stretch forming, rubber pad forming, and powder compacting. The hydraulic press is advantageous in manufacturing, as it gives the ability to create more intricate shapes than other methods and can be economical with materials. A hydraulic press will take up less space compared to a mechanical press of the same capability. In

geology Geology (). is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth ...

tungsten carbide Tungsten carbide (chemical formula: ) is a carbide containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering for use in in ...

coated hydraulic press is used in the rock crushing stage of preparing samples for

geochemical Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans. The realm of geochemistry extends beyond the Earth, encompassing the ...

analyses in topics such as understanding the origins of

volcanism Volcanism, vulcanism, volcanicity, or volcanic activity is the phenomenon where solids, liquids, gases, and their mixtures erupt to the surface of a solid-surface astronomical body such as a planet or a moon. It is caused by the presence of a he ...

.Garcia, Michael O.; Swinnard, Lisa; Weis, Dominique; Greene, Andrew R.; Tagami, Taka; Sano, Hiroki; Gandy, Christian E. (2010)
"Petrology, Geochemistry and Geochronology of Kaua‘i Lavas over 4.5 Myr: Implications for the Origin of Rejuvenated Volcanism and the Evolution of the Hawaiian Plume"
''

Journal of Petrology The ''Journal of Petrology'' is a monthly peer-reviewed academic journal focused on the field of igneous and metamorphic petrology and petrogenesis. The journal is published by Oxford University Press and indexed in the Science Citation Index. Th ...

'' 51(7): 1507-1540. . Retrieved 15 May 2021. SERVO HYDRAULIC COMPRESSION MOLDING PRESSES

In popular culture

The room featured in '' Fermat's Room'' has a design similar to that of a hydraulic press.

Boris Artzybasheff Boris Mikhailovich Artzybasheff (, 25 May 1899; Kharkov, Kharkov Governorate, Russian Empire – 16 July 1965) was a Russian and American illustrator notable for his strongly worked and often surreal designs. Life and career Artzybasheff was bor ...

also created a drawing of a hydraulic press, in which the press was created out of the shape of a

robot A robot is a machine—especially one Computer program, programmable by a computer—capable of carrying out a complex series of actions Automation, automatically. A robot can be guided by an external control device, or the robot control, co ...

. In 2015, the Hydraulic Press Channel, a

YouTube YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in ...

channel dedicated to crushing objects with a hydraulic press, was created by Lauri Vuohensilta, a factory owner from

Tampere Tampere is a city in Finland and the regional capital of Pirkanmaa. It is located in the Finnish Lakeland. The population of Tampere is approximately , while the metropolitan area has a population of approximately . It is the most populous mu ...

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

. The Hydraulic Press Channel has since grown to over 9 million subscribers on YouTube. There are numerous other YouTube channels that publish videos involving hydraulic presses that are tasked with crushing many different items, such as bowling balls, soda cans, plastic toys, and metal tools. A hydraulic press features prominently in the

Sherlock Holmes Sherlock Holmes () is a Detective fiction, fictional detective created by British author Arthur Conan Doyle. Referring to himself as a "Private investigator, consulting detective" in his stories, Holmes is known for his proficiency with obser ...

story " The Adventure of the Engineer's Thumb".

References

External links

{{Authority control Hydraulic machinery Press tools Machine tools Metalworking tools

Main principle

Application

In popular culture

See also

References

External links