The working way of Self-adjusting rollers is that active frame, two motors and reducer controlled by the same ac motor driver realize the two motors stepless speed change and synchronization
operation. The motor drive the main driving wheel working through drive system. The work piece is putted on the primary and secondary wheels, when the primary wheel running, the friction between work
piece and primary wheel can drive the work piece rotating. the friction between rotating work piece and secondary wheel can drive the secondary wheel running. Each swing arms of the self-adjusting
roller can drive work piece to adjust the diameter by itself, so that the labor power is saved much and the work efficiency is increased.