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强力旋压机床在加工工件时根据工件的不同有两种旋压方法:对于带底的筒形件采用正旋,即金属流动方向与旋压方向相同。对于不带底的筒形件采用反旋,即金属流动方向与旋压方向相反。对于正旋,旋压成形长度与进给量一致。而对于反旋,旋压成形长度等于进给量与金属反流量之和。由于金属反流量与金属变形量有关,因而对于同一旋匝参数来说,其往往也不一致。目前,大多通过理论计算和反复实践才取得一近似值,这给实际加工和提高工件精度带来了不少困难。
Strong spinning machine in the processing of the workpiece according to the workpiece there are two different spinning methods: For the bottom of the cylinder with a positive rotation, that is the direction of metal flow and spinning the same direction. For non-bottomed cylindrical pieces with reverse rotation, that is, metal flow direction and spinning direction opposite. For positive rotation, spinning forming length and feed the same. For anti-rotation, spinning forming length equal to the sum of feed and metal backflow. Since the amount of metal backflow is related to the amount of metal deformation, it is often not the same for the same turn parameter. At present, most of the theoretical calculations and repeated practice to obtain an approximate value, which to the actual processing and improve the accuracy of the workpiece has brought many difficulties.