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Pneumatic Presses A pneumatic press is a type of press that utilizes the flow and pressure of compressed air to exert force on an object. Offering cost-efficiency and high ram capabilities, pneumatic presses provide full tonnage by keeping consistent air pressure throughout the entire stroke length of the ram. Pneumatic presses 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. Fewer moving parts mean that pneumatic presses can achieve a higher ram velocity. Serving industries such as industrial, automotive, electronics, aerospace, steel, defense, marine, mining, packaging and textile, pneumatic presses provide all industries with the utmost accuracy through uniform ram pressure. Typical applications for pneumatic presses include numbering, cutting, riveting, crimping, stamping, bending, punching, marking, piercing, metal working and embossing.
A rigid welded rectangular-shaped assembly with a low profile and a flat underside, pneumatic presses can work independently or be integrated into automated processing systems. Capable of being a four-post or two-post die set, pneumatic presses gain movement through air pressure which moves the pneumatic cylinder. The pneumatic cylinder then supplies force to the press ram. On the downstroke of the press ram, the air tube or elastomeric actuator is signaled from the control system to fill with air. Once filled, the air tube is forced to expand, which applies the air pressure necessary to perform the desired task. When the task is finished, the control system signals the valves to shift, which exhausts the air. Next, mechanical springs that are mounted within the base returns the press ram back to the top of the stroke, which completes the stroke cycle. Three of the more common types of pneumatic presses include hydro pneumatic presses, pneumatic punch presses and pneumatic heat presses. Hydro pneumatic presses work by using a combination of air pressure and hydraulics. These presses are capable of applying extreme force, something that regular pneumatic presses are unable to provide. Pneumatic punch presses are powered by compressed air and are ideal for lighter-duty applications. Pneumatic heat presses use a combination of air pressure and heat to perform tasks such as printing.
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