PRESS PRODUCT FORMING METHOD
First Claim
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1. A press product forming method for press-forming a curved press product,the curved press product being formed into a hat-like cross-section including:
- an upper surface portion;
side wall portions each bending and extending from a widthwise edge of the upper surface portion in a direction crossing the upper surface portion; and
flange portions each bending and extending from an edge of each of the side wall portions,the widthwise edge of the upper surface portion being shaped so as to curve and extend along a longitudinal direction,the press product forming method comprising;
a pre-forming step of forming, at a widthwise end portion of a flat plate-like blank, a highly rigid portion extending along the longitudinal direction; and
a main forming step of forming the upper surface portion and the side wall portions under a state in which the highly rigid portion is left.
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Abstract
Provided is a press product forming method for press-forming a curved press product. The curved press product is formed into a hat-like cross-section including an upper surface portion, side wall portions, and flange portions. The press product forming method includes: a pre-forming step of forming, at a widthwise end portion of a flat plate-like blank, at least one bending portion extending along a longitudinal direction; and a main forming step of forming the upper surface portion and the side wall portions under a state in which the bending portion is left.
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Citations
18 Claims
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1. A press product forming method for press-forming a curved press product,
the curved press product being formed into a hat-like cross-section including: -
an upper surface portion; side wall portions each bending and extending from a widthwise edge of the upper surface portion in a direction crossing the upper surface portion; and flange portions each bending and extending from an edge of each of the side wall portions, the widthwise edge of the upper surface portion being shaped so as to curve and extend along a longitudinal direction, the press product forming method comprising; a pre-forming step of forming, at a widthwise end portion of a flat plate-like blank, a highly rigid portion extending along the longitudinal direction; and a main forming step of forming the upper surface portion and the side wall portions under a state in which the highly rigid portion is left. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A press product forming method comprising:
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providing a substantially flat plate-like blank; pre-forming the blank to create at least one bending portion at or near a widthwise end portion of the blank, the at least one bending portion extending along a longitudinal direction of the blank; forming the pre-formed blank into a curved press comprising a hat-like cross-section including; an upper surface portion; side wall portions each bending and extending from a widthwise edge of the upper surface portion at an angle from the upper surface portion; and flange portions each bending and extending from an edge of each of the side wall portions, the widthwise edge of the upper surface portion curving and extending along the longitudinal direction, wherein the step of forming the pre-formed blank into the curved press is such that the upper surface portion and the side wall portions are formed while the at least one bending portion remains intact. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification