Patent ID: 8850864

Claim:
A press molding method of draw forming a plate material into a predetermined shape, clamping the material from both sides thereof using clamping faces facing, approaching and separating from each other, the method comprising: first clamping the material at a portion where a depth of drawing to the predetermined shape is a first depth in the clamped portion of the material; second clamping the material at a portion where the depth of drawing is a second depth in the clamped portion of the material, the first depth being deeper than the second depth; and between the first clamping and the second clamping, deforming the material such that the portion clamped in the second clamping is positioned in the drawing direction side with respect to the portion clamped in the first clamping, wherein the clamping faces used in the second clamping are inclined going from an inside edge to an outside edge toward the drawing direction, in accordance with a deformation angle of the material after the deforming, wherein a cushion load applied to the material by the second clamping is set so as to allow a material flow down the inclined clamping faces to the portion where the draw forming is performed to the second depth in draw forming and to prevent wrinkles caused by the deformation of the material, and wherein a cushion load applied to the material by the first clamping is set so as to not allow a material flow to the portion where the draw forming is performed to the second depth in draw forming.