The main part of the cold bending forming equipment is the roller. 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 average force of the roller, the wear is balanced, and the service life of the roller is increased.
2. The material used for the roll 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 to three tempers.
3. The arc part of the track is the main part of the cold roll forming equipment. The arc position after the first few press forming, when the vertical edge is rolled in the subsequent pass, the formed arc should be protected by the upper and lower rolls or the horizontal wheel. Tube bundle. Otherwise, the arc position of the material will change during the stretching process, R becomes smaller and becomes triangle, and when the shape R becomes larger, the matching rail will sway, uneven stress, the rail will be deformed, and the service life will be reduced.
4. Rolling stability problem, the problem of deflection of the material in the raceway is often encountered during production. In fact, a single set of rollers is asymmetric, the left side is stressed, and the material deflects to the right; the right side is stressed, the material Swing to the left