Cold roll forming machineis widely used in industrial production. It is widely welcomed by people because of its high working efficiency, low noise and no pollution to the environment. The main parts of the cold forming equipment is the roll, which is the soul of col forming.
The design of the roll is very important, and its design features are as follows:
1. The principle of the average force of each pass of the cold bending forming machine, the rollers of the whole line are equally stressed, the wear is balanced, and the service life of the rollers is prolonged.
2. The material used for the roll of the cold bending forming machine is to use its wear resistance, but the specific strength and hardness are contradictory. The red hardness of C12MoV should be used during heat treatment. After quenching, the hardness can be achieved by two or even three tempering.
3. The arc part of the track is the core part of the slide rail. The arc position after the first few passes is pressed and formed. When the vertical edge is rolled and folded in the later pass, the formed arc shall be effectively protected by the upper and lower rolls or horizontal wheels.
Otherwise, the arc position of the material will definitely change during the stretching process. R becomes smaller and becomes a triangle, the steel ball is not to be the bottom, and the two-point contact produces noise. Uneven force, deformation of the slide rail, shortening the life.
4. Rolling stability problem. The problem of material deflection in the raceway is often encountered in production. In fact, a single set of rollers is asymmetrical. The left side bears a large force and the material deflects to the right; the right side bears a large force and the material is deflected. Swing to the left.