VRM – Heavy Duty 4-Roll Plate Rolls

The VRM 4-roll round bending machine makes bending processes child’s play. This already starts with the alignment of the sheet at the outlet side roller: The sheet is automatically optimally aligned by the machine, which saves the use of lifting gear and auxiliary personnel. During the entire bending process, there is no idle movement of the workpiece due to the bending of both ends of the sheet in the same pass.

Also, the VRM bending machine does not require the sheet to be aligned twice, as is the case with 3-roll machines, due to the automatic bending of the second end of the sheet – the sheet therefore remains clamped between the upper and lower rolls during the entire bending process. The machine automatically adjusts the straight remaining cylinder end to the shortest possible dimension. This saves you work steps.

Safe drive thanks to 4 rollers

The drive of the VRM 4-roll round bending machine by upper and lower rolls offers enormous advantages during the bending process: Even when bending the thinnest sheets, the workpiece is optimally transported. The sheet is securely clamped between the top and bottom rollers – there is no chance of the sheet slipping on the rollers.
The fact that all four rollers are mounted on roller bearings means that there are no lubrication problems in the roller bearings. Therefore, no frictional power has to be dissipated in the form of heat, as is the case with plain bearings. So you don’t need to worry about any friction that may occur.

Centralised control

The operation of the VRM 4-roll round bending machine is also very efficient: the complete bending process can be operated by just one person via a central, mobile control panel. All control elements are brought together there. In addition, the bending machine can be operated and controlled from both sides – the control panel does not have to be left for this purpose.

Automation of the bending machine

The hydraulic system of the VRM sheet bending machine automatically regulates the speed compensation between the upper and lower rolls. This ensures that the two rollers always roll optimally on the sheet metal to be bent. At the same time, the pressure relief valves protect the machine from overload. Thus, the bottom roller lowers itself according to the sheet thickness even with double sheet entry.
In addition, an automatic pressure compensation system for the bottom roller is installed in the VRM 4-roller round bending machine. This means that the same pressures always prevail at both ends of the cylinder to be rounded and the cylinder diameter is thus the same at both ends – for an optimum result.

VRM 4-roller round bending machine in detail

The VRM 4-roll round bending machine has many more advantages to offer. In the white paper you will learn more about the advantages of the VRM machine and the bending process. With the help of clear graphics, you will get to know the VRM in detail and see the bending process with your own eyes.