Shear Spinning（Cone Thinning Spinning）

As shown in the figure, this method is that the tapered parts can be formed from the sheet metal after only one spinning, the outer diameter of the blank remains unchanged, and the wall thickness of the finished product is thinner than that of the sheet metal. If half of the taper angle is between 12 ° and 80 °, this processing method is generally used.            

The forming time of this spinning method is short and the forming accuracy is high. In addition, the shape of the blank is not necessarily circular.