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Double Column Presses

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Hydraulic double column presses, drawing presses & press lines
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  1. Definition: Double Column Presses
  2. Explanation of the term "double column press"
  3. What is produced by presses?
  4. Functions of a press
  5. Types of presses
  6. Working with a press
  7. Distributors of double column presses

Double column presses are hydraulically operated machines for sheet metal forming. The range of applications includes punching, bending, deep drawing and much more. The double column press owes its name to the H-shaped construction with two columns, which enables stable and precise pressing processes. Double column presses are available in different sizes. The rates for stroke, table, and pressure, which can amount to many thousands of tons, may vary considerably. Even older double column presses still function flawlessly in most cases, so they are in great demand even if used. Surplex often auctions used double column presses made by leading manufacturers directly from different European countries.

A double column press is used to reshape sheet-metal. With these presses, large quantities can be mass-produced. As single-user machines, presses were widely used throughout industry, but left out of the assembly line. Presently, presses are one of the typical machines found in the sheet-metal working sector. Because of its design, the double column press is continuously part of the product range of its producers.
  • Sheet-metal reshaping industrial machines
  • Generation of significantly high levels of pressure
  • Used for thick-walled or pressure resistant material
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Workpieces are reshaped by presses. That means that deformations can be created in flat sheet metal without cutting through the material. This process is typically required during the fabrication of assembly products. Common end products of presses include ashtrays, flatware, shovels or lids. Double column presses are employed for especially thick, tough, or pressure resistant material. Its design is capable of generating high levels of pressure.

DIEFFENBACHER Double column press in use
A press consists of a pressing tool, a lifting mechanism, and a frame. In the double column press, the frame is H-shaped. The size of the press determines how much power can be exerted on the product. Depending on the strength of the material, and the circumference and depth of the contours to be pressed, various operations of the press are necessary. The simplest presses are manually operated with a lever. The strongest presses have a hydraulic pressing mechanism. Due to their double bracing, double column presses are especially stable.

The application of a press depends on its construction. There is a distinction between C-presses and O-presses. O-presses and double column presses are identical. On C-presses, the pressing mechanism and pressing tool are located on the back. This enables easy access to the tool, but limits the pressing power. C-presses are limited to around 4000kN. O-presses or double column presses are mounted to the left and right sides of the tool. Through the double mounting, significantly higher pressing power can be achieved. The press's symmetry has additional advantages of dimensional accuracy and high quality in the pressed product.

Presses have been responsible for countless accidents. Today, presses are permissible only with extensive safety features. This includes protective flaps, double release switches, and photoelectric barriers to prevent unintentional grasping of the lifting mechanism. While double column presses are often employed to achieve high-power pressing, aids such as machine jacks, lifting tables, or, when necessary, small cranes are sensible supplements. Double column presses are often hydraulically constructed while this form of power distribution generates especially high pressure.

Due to the prevalence and ubiquity of presses, countless producers specialize in this machine, with a correspondingly large selection. Recommendable suppliers are SCHOEN, HYDRAP, ABCO, LAUFFER, WANZKE, BUSSMANN, HYLATECHNIK and MÜLLER.