Hydraulic Press Machine Vs Mechanical Press Machine

The press represents a precise type of machine tool essential in the performance of industrial manufacturing processes. The presses deliver energy through a force that acts on a distance or blow. An important application is in the manufacture of metal forging. Press energy is used to close the die, forging the inside. Pressing machine tools apply force / energy to work differently from drop hammers (which deliver energy to work through a collision), hammers are the other kind of machine tools used to forge metal parts. The fall hammers are covered on the previous page. This page will cover different types of pressing machines, their function and capabilities, although it is located in the metal slab section, the slab is just one class of manufacturing processes that use presses.

Pressing machines are also the main machine tool used in the processes of metal extrusion and sheet metal fabrication. Hydraulic and mechanical presses are used during sheet metal formation to the extent that sheet metal processes, in general, are often referred to as press work. Presses can be used in the manufacture of plastic parts. Machining operation such as broaching, May also requisite presses.

Press machine tools vary in size and in the amount of force they can produce. The energy of a press is often used to perform jobs that require an enormous amount of force, such as a large amount of plastic deformation of a considerable piece of metal. The method and nature by which a press machine will deliver its energy will vary, depending on its type.

The machine presses shown here are vertical, which means that the force vector is up and down in relation to gravity. In many cases, these same types of machines are used horizontally, which means that the force is delivered in a path perpendicular to the direction of the force of gravity. If the force is exerted vertically, horizontally or at some intermediate angle, the operating principles of each type of machine tool are the same.

Press machine tools are of two main types, Hydraulic Press Machine and Mechanical Press Machine. The selection of a type of press machine depends on the factors of the manufacturing process. The first consideration would be the basic type of process for which the press tool will be used. For example, a metal forging press, an extrusion press, an impact extrusion press or a sheet metal working press will have different general requirements. The next very important factor in the selection of machine presses for a manufacturing operation is the required pressing capacity. The press capacity required is probably related to the size of the work stock and the type of process. The length of the stroke on which the press exerts force is another main factor when choosing a press machine tool, this will also is related to the basic type of process being used. These initial considerations should give an immediate idea of ​​the general type of press requisite. After this, all the specific factors of the manufacturing process must be weighed to determine the best option for a pressing machine tool.

Hydraulic Press Machine

Hydraulic Press Machine is a powerful class of machine tools. They acquire the energy they deliver through hydraulic pressure. The fluid pressure, in a particular chamber, can be increased or decreased by the use of pumps and valves. Sometimes devices and systems can be used to intensify the capacity of pumps in more substantial presses. These presses can operate at a long distance and at a constant speed. Hydraulic Press Machine is generally slower in relation to other types of pressing machines. This implies a longer contact with the work; therefore, the cooling of the work can be a problem when forming a part with hot hydraulic force. Hydraulic presses are capable of being the most powerful kind of presses. Some can be as large as buildings and can generate impressive pressure. The largest hydraulic presses are capable of applying 75,000 tons (150,000,000 lbs) of force. The hydraulic press shown is being used to make a metal forge. Extrusion is also a very prevalent use for such a press, although extrusion is often performed horizontally.

The basic operating principles of the hydraulic press are simple and depend on the differences in fluid pressure is follow by Hydraulic Press Machine Manufacturer. The fluid is pumped to the cylinder under the piston; this increases the pressure of the fluid under the piston. Simultaneously, the fluid is pumped out of the upper channel, which causes the fluid pressure on the piston to decrease. A higher pressure of the fluid below the piston than the fluid above causes the piston to rise. In the next step, the fluid is pumped from under the piston, which causes the pressure under the piston to decrease. Simultaneously, the fluid is pumped to the cylinder from the top, which increases the pressure of the fluid above the piston. A higher pressure of the fluid on the piston, than the fluid under it, moves the piston down.

Mechanical Press Machine

Mechanical presses belong to a class of machine tools that cover a wide range of different types of machines. Mainly the mechanical press transmute the rotational force of an engine into a translation force vector that performs the pressure action. Therefore, the energy in a mechanical press comes from the engine. These types of presses are generally faster than hydraulic or screw presses (in fact, the screw press can also be classified as a mechanical press). Unlike some presses, in a mechanical press, the application of force varies both in speed and in magnitude along the distance of the blow. When performing a manufacturing operation with a mechanical press the precise range of the stroke is essential.

Presses are designate based on the characteristics of the manufacturing process. Machine tools of mechanical presses are commonly used in the manufacture of metal forging and in sheet metal work. The desired force application will determine the type of machine required. Extrusion will often require a more consistent force over a longer distance. However, a mechanical press can often be a good option for impact extrusion, since a rapid and quickly repeatable application of force over a limited distance is what is needed for that type of manufacturing process. The most powerful mechanical presses in the modern manufacturing industry will have a pressing capacity of approximately 12,000 tons (24,000,000 lbs).