1, Hand-feeding and automatic driving and reversing knife is of high speed, timing the output. 2, This machine specially can finish coping and refacing the inner and external angles on the end-face of the round pipe and the round bar in a single time, quick and accurate. 3,In order to guarantee the accuracy and constancy of the centerline between the piece to be processed and the cutter head, the clamp and the cutter head, through the precise designing, can evenly finish processing the piece in a single time. 4, With special designing for the cutter head, the knife is normalized and adjusting the knife is easy and quick.