The rolling machine is an equipment that uses working rollers to bend and form sheet metal parts, and can shape cylindrical parts, conical parts, and other different shapes. It is a very important processing equipment. The working principle of the rolling machine is to make the working roller move through external forces such as hydraulic and mechanical transmission power, causing the sheet metal to bend or bend into shape. According to the different shapes of the working roller rotation and position changes, elliptical parts, arc parts, cylindrical parts and other parts can be processed. The most commonly used is the 3 roller plate bending machine, which can be mechanical or hydraulic. The mechanical 3 roller plate bending machine is divided into symmetric and asymmetric. It can roll metal sheets into circular, arc and tapered workpieces.
The upper roller moves up and down vertically through the hydraulic oil inside the hydraulic cylinder acting on the piston, and the main reducer's final stage gear drives and controls the upper roller movement. The metal sheet passes through the three working rollers of the rolling machine (two lower rollers and one upper roller), relying on the pressure of the upper roller and the rotation of the lower roller to make the metal sheet undergo multiple continuous bending and permanent plastic deformation, rolling into the required shape. The disadvantage of the wave pressure 3 roller plate bending machine is that it needs to rely on other equipment to pre-bend the edge of the plate.
When using the rolling machine to manufacture conical workpieces, it is important to adopt the correct method and related skills, otherwise rolling failure may easily occur, and even cause machine damage. The 3 roller plate bending machine is a sheet continuous point bending machine, which can roll metal sheets into circular, arc, and conical workpieces within a certain range. So how does the rolling machine roll cones?
First of all, the conical structure is composed of many circles from top to bottom and from small to large, and the circumference of the circle becomes longer from the small end to the large end. Generally, the rolling machine can roll cones with small taper (30 degrees). The tapered cylinder is unfolded and rolled into a circle. The key to rolling cones is that the linear velocity of the large end and the small end are basically the same. Because the linear velocity of the rolling element is the same, the rolling speed of the large end should be controlled. It can be seen that the operator's skills and operation requirements are very high and also quite dangerous. Therefore, for safer and more convenient use, it is recommended to use conical rollers when rolling conical cylinders. Using a conical support roller, the upper support roller does not need to control the inner and outer end speeds, and using this structure can easily complete the work.
