A dynamic showdown between two 1960 Seravesi's sheet metal bending machines: a case study

1960 Seravesi, specializing in the design and production of sheet metal bending machines, profile bending machines, and hydraulic presses for dished ends, stands out as a true hub of innovation in the international industry. In this case study, we will explore the key differences between the variable-axis E79 roller and the 4-roller model RI72.

Roll gap, variable distance, and roller interference

The E79 addresses certain challenges in the entry phase that made the 4-roller RI72 model less versatile. With one roller positioned beneath the central roller and another open to play a supporting role, the E79 machine executes the entry with surprising precision. Controlled sheet metal deformation significantly shortens the remaining flat part, providing greater operator safety. In contrast, the 4-roller RI72 requires careful sheet positioning to prevent it from slipping during the entry.

The adjustable feature facilitates reducing the flat portion of the workpiece and enables rolling thicker materials with the same force by altering the distance between the upper roller (variable axis) and the two lower rollers. The upper roller of the RI72 remains fixed. Interference between the rollers in the E79 allows the upper roller to descend further between the lower rollers, making this machine suitable for producing tubes with much smaller diameters than the 4-roller model.

Conical bending and re-rolling

The operational principle of the variable-axis E79 3-roller machine offers 60% more bending capacity than the entry phase. The E79 sheet metal bending machine stands out for its ability to perform 100% conical bending, thanks to the option of tilting all the rollers. During the re-rolling phase, the welded part of the tube does not simultaneously touch all the rollers, reducing stress on cylinders and bearings compared to the 4-roller RI72. This is also due to the functionality of the upper roller, which acts as a press. With horizontal-operating side rollers, the working height of the E79 three-roller sheet metal bending machine is reduced compared to the 4-roller and does not require foundations.

1960 Seravesi's upcoming international events

Throughout 2024, there will be several opportunities to personally connect with the 1960 Seravesi expert team. The Italy-based company has already confirmed its presence at three unmissable international fairs:

- Brazil: FEIMEC, São Paulo, May 7-11, 2023, Booth B138
- United States: FABTECH, Orlando, October 15-17, Booth S17138
- Germany: EUROBLECH, Hanover, October 22-25, Booth A106 - Hall 11

For further information or to schedule an appointment at the fair, do not hesitate to contact the Seravesi team through the contacts provided.

1960 Seravesi, born in Brescia ( Northern Italy ), has established itself in the sheet metal deformation machinery market. The current production range includes sheet metal bending machines, profile bending machines, hydraulic presses, and manipulators for dished heads forming process, in addition to customized machines. The precision of the 1960 Seravesi experts is reflected in the reliability of their machines, operating on a large scale before showing signs of wear.