Cold Bending Die for Cold Bending Machines

Bend Forming Machine (English Name: Cold Roll Forming Machine), design and manufacturing features of ball bearing guide rail rolling mill:

1. The principle of average force distribution across each pass, with uniform force on all roller lines, ensures even wear and extends the service life of the rolling mill rolls.

2. The use of C12MoV material for rolling mills takes advantage of its wear resistance, but there is a contradiction between its strength and hardness. During heat treatment, the red hardness of C12MoV must be utilized. After quenching, it requires two or even three tempering cycles to achieve the desired hardness.

3. The track arc section is the core part of the slider. After the initial forming of the arc, during the subsequent rolling and bending to create a vertical edge, the formed arc should be effectively constrained using either the upper and lower rolling rolls or the cross roller. Otherwise, the arc position will change during the stretching process, the R value will decrease to form a triangle, the ball will not reach the bottom, resulting in noise from the two-point contact. When the R value increases, it causes oscillation with the track, leading to blurred tracks during slider usage, uneven force distribution, slider deformation, and shortened lifespan.

4. Rolling stability issues often arise during production, where materials tend to sway left or right within the rolling track. This is actually due to uneven force distribution on a single roller set, with more force on the left causing the material to sway to the right, and vice versa on the right.