A press-builder , generally abbreviated to press , is a machine tool that changes the shape of the workpiece by applying pressure. Pressing can be classified accordingly
- the mechanism: hydraulic, mechanical, pneumatic;
- function: pressing forging, pressing stamping, pressing brakes, pressing buttons, etc.
- the structure, e.g. Knuckle-joint press, press screw
- their control capabilities: conventional vs. servo-suppress
Video Machine press
Shop Tekan
It usually consists of a simple rectangular frame, often made of a C-channel or tube, which contains a bottle jack or a hydraulic cylinder to apply pressure through the ram to the workpiece. Often used for general purpose setting work in automated mechanical workshop, machine workshop, workshop or basement, etc. The specialty shop is able to apply between 1 and 30 tons of pressure, depending on size and construction. The light-duty version is often called arbor pressure.
Shop shops are usually used to suppress interference to fit together, like a gear to a shaft or a cushion into the house.
Maps Machine press
Others are suppressed by app
- The press brake is a special type of press machine that bends the sheet metal. A good example of the kind of work a brake press can do is the backplate of the computer case. Other examples include brackets, frame pieces and electronic enclosures. Some press brakes have CNC control and can form sections with accuracy up to a fraction of a millimeter. Bending strength can reach up to 3,000 tons.
- A punch punch is used to form a hole.
- A screw press is also known as a fly press.
- Stamping press is a press machine used to form or cut metal by damaging it with die mold. It generally consists of a press frame, a rolling plate, and a ram.
- Capping presses form a cap from aluminum foil rolls up to 660 per minute.
Examples of strange press controls: servo-press
Press servomechanism, also known as servo press or ' electro press , is a press driven by an AC servo motor. The resulting torque is converted into a linear force through a ball screw. Pressure and position are controlled through load cells and encoders. The main advantage of the servo press is its low energy consumption; only 10-20% of other press machines.
When stamping, it's really about maximizing energy compared to how a machine can deliver tonnage. Until now, the way to increase tonnage between die and workpiece on a mechanical machine is through a larger engine with a larger motor.
Emphasis type
The style of press used correlates directly with the final product. Press type is straightside, BG (re-directed), directed, gap, OBI (reopen inclinable) and OBS (reopen stationary). Hydraulic and mechanical suppressors are grouped according to the frames of moving elements installed. The most common are the gap-frame, also known as the C-frame, and the straightside press. The straightside press has vertical columns on both sides of the engine and eliminates angular deflection. C-frames allow easy access to dead areas on three sides and require less floor space. A type of gap-frame, OBI pivots frame for easier memo or debit section. OBS time of air blast, device or conveyor for scrap or partial residue.
History
Historically, metal was formed by hand using a hammer. Then, a large hammer is built to press more metal at once, or to press a thicker material. Often smith will use a helper or apprentice to swing the hammer while the blacksmith concentrates on the position of the workpiece. Drop the hammer and trip hammer using a mechanism to lift the hammer, which then falls due to gravity into the work.
In the mid-19th century, manual and rotary-cam hammers began being replaced in the industry by a steam hammer, first described in 1784 by James Watt, a Scottish Mechanics inventor and Engineer who also contributed to the earliest steam and condenser engines, but not built until 1840 by British inventor James Nasmyth. By the end of the 19th century, steam hammers had greatly increased in size; in 1891 the Betlehem Iron Company made an increase that allowed the steam hammer to produce a 125 ton blow.
Most modern pressing machines usually use a combination of electric and hydraulic motors to achieve the required pressure. Along with the evolution of pressure, evolution emerged from the dies used in it.
Security
Pressing the machine can be dangerous, so security measures should always be done. Bi-manual controls (usage controls that require both hands to be on the button to operate) are excellent ways to prevent accidents, as well as light sensors that keep the engine working if the operator is within range of die.
References
External links
- The guidebook forms metal
- The Forging Industry Association
Source of the article : Wikipedia
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