A mechanical press is used to make olive oil.
A mechanical press is a device designed to apply very high force to form, shape or cut materials, to compress solids or to extract liquids. Mechanical presses range in size from very small units that are manually operated to large motorized industrial units used in manufacturing and assembly line applications. For example, a simple hand press can be used to remove a bearing from a machine assembly, or a large press can be used to stamp sheet metal into the curved shapes used to build automobile bodies.
A mechanical press can be used to cut and shape sheet metal.
An industrial mechanical press is commonly used to shear, bend or form sheet metal. It usually consists of a structural frame, a lower stationary base, and an upper ram that moves along a vertical axis to apply a force. The component that moves along the axis and applies force is called a battering ram. There are different frame designs and mechanical configurations for the ram to meet the functional requirements of the press.
There are different mechanisms to generate the force used in a mechanical press. A hydraulic press uses one or more cylinders and high pressure fluid to move a piston in the cylinder and create force. Pneumatic presses are similar to hydraulic presses, but they use pressurized air instead of fluid. A mechanical press is driven by an electric motor that drives a large flywheel, crank and clutch. A servo-driven mechanical press employs high-precision motors to replace the flywheel and allows for better force control throughout the ram cycle.
The amount of force a mechanical press can generate is known as capacity. Industrial presses are manufactured in a wide range of sizes and capacities, ranging from less than one ton to 10,000 tons or more. Mechanical presses used in industrial applications often apply several tons of force to objects being formed.
A die is commonly used in a mechanical press that is shaping, punching, or trimming a material. The die is mounted on the base of the press and has a profile that corresponds to the shape of the part being formed. The die provides the cutting surfaces and an indented space for the stamped or punched part to fall out.
There are many types of mechanical presses available to suit a variety of applications. Common industrial uses for a mechanical press include punching, which creates an open hole in the sheet metal by removing an inner section of material; stamping, which gives a useful shape to the sheet metal; and bending, which shapes the sheet metal around a straight axis. Other uses include extracting liquids, such as extracting oil from olives to make olive oil; and compacting solids, such as the mechanical presses used to crush cars in automotive scrap yards.