| 摘要 |
PROBLEM TO BE SOLVED: To satisfy all strain components required for obtaining a target curved surface by heating a heating line arranged on one surface. SOLUTION: Firstly, the in-plane contraction strain components of the target specific strain are replaced with the isotropic ones, and the surface of a metal plate 1 is divided into a large number of mesh areas along the directions of two major axes orthogonal to each other of the bending strain component of the target specific strain. Next, strip-like heating areas 3 with the heating lines 2 meandering in the right-and-left direction with the required width and at the required meandering pitch are arranged orthogonal to each other along the directions of the major axes in each mesh area 6. Next, a heating source is moved along the heating lines 2 of each strip-like heating area 3 to perform the local heating. During this operation, the ratio of the in-plane contraction deformation to the bending deformation in the direction orthogonal to the axis formed by the heating of one strip-like heating area 3 is changed by controlling the moving speed and the meandering pitch of the heating source, and by adding the in-plane contraction strain component to the bending strain component in the two strip-like heating areas 3 orthogonal to each other, the strain component agreed with the strain component required for bending the metal plate 1 to the target shape is given.
|
