press

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press

machine tool

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July 13, 2026

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A press is a type of machine tool used to change the size or shape of materials, typically sheet metal, by applying pressure through a die. The die's form dictates the final shape of the workpiece. Presses consist of a punch, attached to the machine's ram, and a die, secured to a base.1

These machines are powered by electric motors, with mechanisms like cranks, toggles, or cams converting rotary motion to the ram's back-and-forth movement. Flywheels store energy to reduce the motor's capacity requirements. Presses are used for various metal-forming processes, including shearing, blanking, bending, and drawing. They can range from small, workbench-mounted units to massive industrial machines weighing hundreds of tons.12

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machine tool
Presses
This large class of machines includes equipment used for forming metal parts by applying the following processes: shearing, blanking, forming, drawing, bending, forging, coining, upsetting, flanging, squeezing, and hammering. All of these processes require presses with a movable ram that can be pressed against an…
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This large class of machines includes equipment used for forming metal parts by applying the following processes: shearing, blanking, forming, drawing, bending, forging, coining, upsetting, flanging, squeezing, and hammering. All of these processes require presses with a movable ram that can be pressed against an…
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embossing
…set either in small handscrew presses or in ordinary letterpresses. Blocked ornaments on book covers or imitation tooling on leatherwork can be effected by means of powerful embossing presses. For impressing embossed patterns on wallpapers, textiles, and felt, copper cylinders are engraved with the patterns to be raised. The cylinders…
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…set either in small handscrew presses or in ordinary letterpresses. Blocked ornaments on book covers or imitation tooling on leatherwork can be effected by means of powerful embossing presses. For impressing embossed patterns on wallpapers, textiles, and felt, copper cylinders are engraved with the patterns to be raised. The cylinders…
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flywheel
In power presses the actual punching, shearing, and forming are done in only a fraction of the operating cycle. During the longer, nonactive period, the speed of the flywheel is built up slowly by a comparatively low-powered motor. When the press is operating, most of the required…
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In power presses the actual punching, shearing, and forming are done in only a fraction of the operating cycle. During the longer, nonactive period, the speed of the flywheel is built up slowly by a comparatively low-powered motor. When the press is operating, most of the required…
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forging
Forging presses employ hydraulic or mechanical pressure instead of the blows of the drop forge. Most forging presses can exert only a few hundred tons of pressure, but giant presses, used for forging parts of jet aircraft, are capable of up to 50,000 tons of pressure.
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Forging presses employ hydraulic or mechanical pressure instead of the blows of the drop forge. Most forging presses can exert only a few hundred tons of pressure, but giant presses, used for forging parts of jet aircraft, are capable of up to 50,000 tons of pressure.
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high-pressure phenomena
Large-volume apparatuses
Sustained high pressures and temperatures are now commonly produced in massive presses that focus large forces (up to thousands of tons) through two or more strong anvils to compress a sample. The simplest of these devices, introduced by Bridgman in the 1930s, employs two tapered anvils that…
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Sustained high pressures and temperatures are now commonly produced in massive presses that focus large forces (up to thousands of tons) through two or more strong anvils to compress a sample. The simplest of these devices, introduced by Bridgman in the 1930s, employs two tapered anvils that…
Read More