Calculation of Groove of CPE Push Bench

The CPE push bench process and the equipment are briefed. The main superiorities of this pipe-making process are analyzed. And the calculation methods for the groove of the CPE mill proper and the groove of the pointing tongs detailed. A new design method for the pointing tongs is put forward,and furthermore,the pointing process is optimized. The study reveals that compared with the convenient pointing tongs and the pointing process,the modified ones will bring about such advantages as reduction of the crop loss,increase of the yield,and assurance of smooth operation,etc.