利用普通卷板机卷制锥形筒体的方法很多,如:分区卷制法、矩形卷制法、旋转送料法和小口减速法等。但采用上述方法卷制的锥体几何形状不太精确。由于坯料(展开图形为扇形)在送进时,小口和大口的送进速度不一,因而整个坯料在滚动的同时,另一端还伴随有滑动现象。这样,坯料的棱边就容易将卷板机的滚筒拉伤,使设备的加工精度降低。 利用图1所示的辅助套筒装置,可以在普通三辊 There are many ways to roll a conical cylinder with ordinary coiler, such as zonal winding method, rectangular rolling method, rotary feed method and small mouth deceleration method. However, the geometry of the cone rolled using the above method is not very accurate. As the billets (fan-shaped expansion figure) in the feed, the small mouth and large mouth of the feed rate varies, so the entire blank while rolling at the other end is also accompanied by a sliding phenomenon. In this way, the edge of the blank is easy to pull the roller rolling machine, reducing the processing accuracy of the equipment. With the auxiliary sleeve device shown in Fig. 1, it is possible to use an ordinary three-roll