Profile Ring Rolling

I explained that the rotation speed of the main roll is constant in the ring rolling machine( Rotation speed control of axial roll ). But it isn’t constant in the CALTEK ring mill. I’ll tell you why the rotation speed of the main motor is not constant in our ring mill. Increasing the rotation speed of the roll during rolling can reduce the rolling force because the coefficient of friction between the roll and the workpiece becomes smaller.  That’s why I always ask the ring mill operators to make the rotation speed of the main roll as fast as possible.  However, if the size of the ring is small, the ringmill operator should not rotate the main motor in the maximum speed. I’ll explain the reason with this ring mill belows: * Main motor rpm : 0 ~1,200 * Main roll gear box reducer ratio : 1/40 * Axial roll cone angle : 40 * Axial roll gear box reducer ratio : 1/10 * Axial motor rpm : 0~1,400 * TR range : 200~600 Tis is a graph of the rotational speed of the axial motor according t...

The linear velocity is proportional to the rotation radius and rotation speed.The linear speed of the main roll is obtained by multiplying the radius of the main roll by the rotational speed of the main roll. V=r × ω There are a motor, gear box and main roll in the main roll assembly. The main roll assembly has a main motor, gear box and main roll. In general, the main speed displayed on the ring-mill program screen is the rotation speed of the main motor.  The main roll assembly has a main motor, gear box and main roll. In general, the main speed displayed on the ring-mill program screen is the rotation speed of the main motor. The rotation speed of the main roll( ω M ) is calculated by the rotation speed of the motor( ω m ) and the reduction ratio of the gearbox(R). ω M = ω m ×R Therefore, the linear velocity of the main roll(V) is, V=R x  ω M  ( R : reduction ratio of the main gear box,   ω M  : rotation speed of the main motor) L...