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In a mechanical press, a motor is connected to a crankshaft in various ways. Since the motor generates the momentum, and it is connected to a flywheel through belts, it is called a mechanical press. In simple punch press, it is connected and controlled by a clutch. In bigger presses, gears are added for rotating the crankshaft smoothly and efficiently. In straight side press, two pinions and gears run a single crankshaft. While speed and consistency of tonnage are higher in the case of the mechanical press, there are a few aspects that make hydraulic press a preferred option as compared to mechanical press in industries. Why is a hydraulic press better? Hydraulic punch presses have pressurized hydraulic fluid that is pumped to the ram via a cylinder. A typical hydraulic punch press doesn’t have a flywheel. It runs by the pressure of the fluid. It is useful for conditions where a consistent pressure is required and a large range of strokes. Contrary to the popular belief, it can be used for faster-running processes as well. However, the ability of running deep draw parts vanishes as the speed increases. If proper force is not maintained, then there are chances of over exertion. It may cause damage to the press and die by ripping the bottom. Benefits of hydraulic press • It is better for small runs because of high efficiency. • Force remains unaffected with increase or decrease of shut height. • Excellent capacities of drawing and forming. • Compressed air needs relatively less motion for exerting maximum force. • Better efficiency as compared to the conventional flywheel and motor system. • A wider window within the stroke path. A few terms and their meaning • Stroke: It is the distance traveled by ram between the two extreme points of retraction and extension. • Shut height: The maximum possible distance between ram and bed when the press is fully extended. • Bed height: Distance between the bottom and the top of the bed bolster (the plate that serves as the working surface). • Daylight: The distance between the ram and bolster in case of total retraction. Due to the benefits mentioned above, hydraulic press leaves behind mechanical press in a variety of industrial applications. Though mechanical one is inevitable in a few industries where high pressure and thrust is required along with high speed, a large number of establishments prefer hydraulic ones. So the demand for hydraulic presses is on rise year by year. One the most common uses of presses is in plywood industries. Hydraulic plywood presses are extensively used in wood processing industries.
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In a mechanical press, a motor is connected to a crankshaft in various ways. Since the motor generates the momentum, and it is connected to a flywheel,
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