LITOSTROJ RAVNE LTD. Manufacturer of high quality custom-made industrial hydraulic and mechanical presses for sheet metal forming with nominal force from 400 to 40.000 kN, with length of a table up to 8 meters.
The skills and know-how of Litostroj RAVNE experts, the innovations and solutions being evolved and implemented in mechanical and hydraulic presses for more than forty years, are perfectly brought into use and combined in excellent custom designed TRANSFER PRESSES, which are a superior products of Litostroj RAVNE.
Ravne brand originates from 400 years of steel milling tradition. The presses production of mechanical and hydraulic presses for steel and sheet metal forming industry have been performed for more than 45 years. In this period, various mechanical and hydraulic presses and press line equipment were produced.
Sheet metal material is mostly used “body part material” in automotive and household appliances industry. Sheet metal forming presses are in this meaning very important structure of production process of automotive and household appliances industries, as also in electronic and other industries.
Sheet metal forming presses of Litostroj RAVNE are mostly custom made. Our company has strong design departments, where innovative and practical solutions in field of mechanics, electronics and hydraulics are developed. Result of common work of the departments is excellent performance of mechanical or hydraulic presses of Litostroj RAVNE. One of big advantages of Litostroj RAVNE is also good knowledge of mechanics and hydraulics that was gained in more than 40 years of production of hydraulic and mechanical presses. Combined cooperation of mechanical and hydraulic department is important when developing mechanical presses, where hydraulic elements also play an important role in production technology.
The flexibility of our company and creativity of our engineers often results with superb performance of transfer presses, where hydraulics is a big support and main upgrade to mechanical components. Performance of mechanical part of the press, synchronized with hydraulic elements (such as hydraulic die cushion, hydraulic fast clamping system, etc.) is essential for making certain part production possible or for generally increasing press productivity.
To determine a kind of Litostroj RAVNE sheet metal forming press, client should (by himself or with help of RAVNE) denominate at least:
- Force producing mechanism:
o Mechanic – Eccentric;
- Number of uprights:
- Dimensions and working parameters:
o Nominal Force
o Slide and Table size (up to 8 meters);
o Productivity of the press (strokes per minute for mechanical and speed at hydraulic presses);
o Slide stroke;
o Shut height;
- Possible additional equipment:
o Die clamps;
o Die cushion;
o Die brackets;
o Die lifters ;
- Sheet metal forming presses can be used for different technics for sheet metal forming:
o Single die forming (single or double action presses or tandem lines);
o Progressive die forming;
o Transfer die forming;
o Drawing and deep drawing;
o Precise cutting – fine blanking;