A two-roll plate bending machine is a common piece of metalworking equipment used to bend and form sheet metal. It consists of a rigid roller and an elastic roller, and the continuous bending of the sheet is realized through the movement and force of the roller.
In a two-roll plate rolling machine, the rigid rolls are responsible for providing the bending force, while the elastic rolls support and bend the plate. When the steel roll is pressed into the elastic roll with a certain hardness and high elasticity, the elastic roll will produce concave deformation in the radial direction, so that the sheet will be bent. The elastic roller is usually made of polyurethane rubber, which has high elasticity and wear resistance.
Works principle
The working principle of the two-roller plate bending machine is to achieve plate bending with different radii and angles by adjusting the position and pressure of the rollers. By changing the gap and relative position between the rigid roller and the elastic roller, the pressure and bending radius of the roller on the sheet can be adjusted. The speed and direction of rotation of the rollers also affect how the sheet is formed.
In actual operation, the two-roll plate rolling machine can adopt different processes according to the properties and requirements of the plate. For better plasticity or thin sheets, the bending can be completed in one time. However, for poor plasticity or thick plates, it is necessary to increase the amount of reduction, first partly formed, and then further rolled.
The two-roll plate bending machine operates with a rigid roll and an elastic roll. When the steel roll is pressed against the elastic roll, which has a certain hardness and high elasticity, the elastic roll undergoes radial deflection and deformation. The plate is bent Through the reactive force of the elastic material’s deformation, driving the elastic roller and enabling continuous bending of the plate. The elastic roll is made of polyurethane rubber with a hardness ranging from Rockwell hardness HS85 to HS95.
Once the amount of roll pressure reaches a certain critical value, further increases in the pressure yield minimal changes in the workpiece diameter. Therefore, when the critical roll pressure is not reached, the dimensions of the workpiece may not be stable, and it is generally not recommended to continue increasing the roll pressure. To change the diameter of the workpiece, a guide wheel with an appropriate diameter can be fitted onto the rigid roll for rolling and bending operations.
Two methods for bending sheet metal
There are two methods for bending sheet metal components on the two-roll plate bending machine. For highly ductile materials (with bending angles greater than 30%) or thin sheets (with thicknesses ranging from 1.5 to 4mm), the parts can be bent in However, for materials with poor ductility or thicker sheets, it is necessary to increase the roll pressure to partially form the part and then apply the pressure roll on the parallel area outside the formed section to roll and shape it.
Summary
In order to ensure the working effect and safety of the two-roll plate bending machine, the operator needs to be familiar with the operation method and parameter setting of the equipment. At the same time, regular equipment maintenance and maintenance are carried out to ensure the surface finish and flatness of the rollers, as well as the normal operation of the lubrication system.
Two-roll plate rolling machines are widely used in the metalworking industry for bending and forming of various materials and sheet thicknesses. It has the advantages of simple operation, low cost and high production efficiency, so it is favored by many manufacturers and processing plants.
To sum up, the two-roll plate bending machine is an important metal processing equipment, which can continuously bend and form metal sheets through the combination of rigid rolls and elastic rolls. It is widely used in multiple industries and provides manufacturers and fabricators with efficient and reliable metal processing solutions