Feeding box owns the electromagnetic valve of the clutch, so the button can achieve the fast move and direction selection. Feed box is equipped with double speed motor drive head feeding, and realize the fast moving through the fast move motor. The positive and negative direction of the feeding direction are controlled by the motor. The vertical rest feeding and the side rest feeding can't achieve at the same time. In ordinary cases the vertical rest and the side rest move horizontally and in the vertical direction the braking coupling in the feeding box brake. If the rest move vertically so the brake will achieved by the braking coupling in the horizontally feeding box. In manual surface machining, the electromagnetic clutch of the vertical and horizontal direction should be off, this can be achieved by operating the change-over switch.