The cold-bending forming machine is a machine that continuously bends a metal strip such as a coil material or a strip by a multi-pass forming roll which is sequentially arranged to form a plastic working process of a specific section profile.
Bending forming machine (English name: Cold Roll Forming Machine), steel ball bearing roller design and manufacturing features:
1. The principle of average force of each pass, the average roller of the whole line is stressed, the wear is balanced, and the service life of the roll is extended.
2, the use of C12MoV material is the use of its wear resistance, but the specific strength and hardness are contradictory, the heat treatment should use the red hardness of C12MoV, after quenching, two or even three times tempering to achieve hardness.
3. The arc part of the track is the core part of the slide rail. The arc position of the first few passes after the press forming, in the subsequent pass rolling the vertical edge, the formed arc should be formed, and the effective tube bundle protection is carried out by the upper and lower rolls or the horizontal wheel. Otherwise, the arc position of the material will change during the stretching process, R becomes smaller and becomes a triangle, the steel ball is not in the end, the two points contact the noise, and when the R becomes large, the coordination rail is swayed, and the track is blurred when used. Uneven force, deformation of the slide rail and shortened life.
4, rolling stability problem, the production often encounters the problem of material yaw in the raceway, in fact, the single set of rollers is asymmetrical, the left side is stressed, the material is yaw to the right; the right side is strong, the material Pivot to the left.