4/7/11

Cnc Punching

Punch Presses are ordinarily used in the Sheetmetal industry; however they may be employed in other types of industry where the process of punching out shapes of dissimilar materials is required.

The punch press is used for cutting and forming material into discrete shapes and sizes and is a type of motor press. These presses may be very large Cnc operated machines which hold large involved die sets, or they may be small manually operated machines which only hold one straightforward die.

Hydraulic Press Brakes

Die sets ordinarily consist of 'female' dies and 'male' punches, and when pressed together with the desired material placed in the middle of them, may form a hole or even deform the material (workpiece) into the desired shape of form. The punch is fixed to the end of a ram which moves up and down during the punching process in a vertically linear motion, and the dies and punches are movable to enable dissimilar shapes and holes to be formed into the workpiece.

There are mainly two types of base machines and these are ordinarily large frame metal pieces of equipment. These are C type frames and portal type frames. On the C type frame there is a hydraulic ram set at the top part which allows the punching process to be carried out. On the portal type frame, the ram is cantered within the frame to prevent frame distortion and deflection.

Punch press machines all have a bed or table with rollers or brushes incorporated into them to enable the workpiece or the sheet of metal to trip with low friction. Brushes are mainly employed when minimal scratching or similar marks are not desirable, and the brushes furnish a suitable quit to the material. Brushed aluminium or highly polished steels are an example of this process.

Punch presses are machines used for processing sheets of material, ordinarily sheet metal, and they perform the operation of forming or stamping the sheet material at specified areas. Many of these machines will have a theory by which they are controlled, and Cnc operations allow for self-acting modes considered by a pre-built program.

A punch press is characterized by some basic parameters and these will include:

· Type of tool shop

· Tool shop capacity

· Size of working area

· The working force (20 tons for example)

There are dissimilar types of Cnc punch presses and they comprise the hydraulic punch press, the mechanical punch press and the flywheel driven press. Punch presses are often referred to by their tonnage, and the sizing tooling needed for a exact task is a right transmit process as the tonnage required to form and cut most materials is well known.

Cnc Punching

Hydraulic Press Brakes

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