抄録
Recently, push forward method called MOS bending was invented. This is the pushing method of bending to arbitrary shape by using one pair of dies By applying parallel link, we aimed to create more compact and flexible machine. In previous report, we presented archimedes spiral forming method using coaxial type parallel link which features push rod and parallel link center in the same center. This method is fitted far easily twistable sectional form such as Square, but not applicable for circular sectional form because it is difficult to twist. This time, we are going to discuss new forming method for the latter case which is to change bending direction continuously.
