| 摘要 |
PURPOSE:To prevent an edge buckling and a distortion and to stabilize a forming shape, as to a roll position of a cage roll, by estimating a deformating shape from an inlet and outlet shapes of the cage roll and by setting the cage roll to parallel to said estimated deformation shape. CONSTITUTION:The deformed shape in the cage is interpolated to set the roll 1 based on the shape of an inlet and outlet sides of the cage. A point on the outlet side 3 of the cage (X2, Y2, Z2) is interporated by an interpolating function, where X: distance from the cage inlet side 2, L: whole length of the cage and (n): shape parameter. More, when the shape parameter (n) changes, a deforming pattern becomes changeable. The shape parameter (n) is decided in an optimum value by calculation or an experimentation based on the outer diameter, thickness and strength. Furthermore, because the distortion is caused by a tortional moment in proportion to a moment arm, it is prevented by deciding the set angle of the roll to minimize the moment arm. In this way, the edge buckling and the distorsion is prevented.
|
