Press forming method and method of manufacturing press formed product
US-10413956-B2 · Sep 17, 2019 · US
Method for manufacturing press-formed product, device for manufacturing press-formed product, mandrel, and press-formed product
US10695814B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10695814-B2 |
| Application number | US-201515107715-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 3, 2015 |
| Priority date | Mar 4, 2014 |
| Publication date | Jun 30, 2020 |
| Grant date | Jun 30, 2020 |
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- Title
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- Abstract
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Abstract
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A method for manufacturing a press-formed product includes: a first step of preparing a long material having a bending portion; and a second step of decreasing curvature of the bending portion while restricting both ends of the long material in a longitudinal direction.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing a press-formed product, comprising: a first step of preparing a long material having an elongated web portion and a vertical wall portion, the elongated web portion having a bending portion, the long material being the press-formed product, the long material having distal end surfaces; and a second step of compressing the bending portion in a longitudinal direction by decreasing curvature of a concave side of the bending portion while restricting both ends of the long material in the longitudinal direction at the distal end surfaces of the vertical wall portion and by increasing a cross-sectional area of the long material. 2. The method for manufacturing a press-formed product according to claim 1 , wherein in the second step, the curvature decreases while the shortest distance between both ends of the long material is constantly maintained. 3. The method for manufacturing a press-formed product according to claim 1 , wherein in the second step, the curvature decreases while a shortest distance between both ends of the long material decreases. 4. The method for manufacturing a press-formed product according to claim 1 , wherein in the second step, the curvature decreases while at least a concave side of the bending portion of the long material is supported. 5. The method for manufacturing a press-formed product according to claim 1 , wherein in the second step, the curvature decreases in stages. 6. The method for manufacturing a press-formed product according to claim 1 , wherein planes including edges of both ends of the long material are parallel with each other. 7. The method for manufacturing a press-formed product according to claim 2 , wherein in the second step, the curvature decreases while at least a concave side of the bending portion of the long material is supported. 8. The method for manufacturing a press-formed product according to claim 3 , wherein in the second step, the curvature decreases while at least a concave side of the bending portion of the long material is supported. 9. The method for manufacturing a press-formed product according to claim 1 , wherein the bending portion has a vertex portion at a convex side thereof, and in the second step, decreasing the curvature of the bending portion by pressing only the vertex portion of the bending portion while restricting the both ends of the long material in the longitudinal direction at the distal end surfaces.
Assignees
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Classifications
for making peculiarly, e.g. irregularly, shaped articles · CPC title
Making other articles · CPC title
beams or pillars · CPC title
Upsetting · CPC title
- B21D22/225Primary
with members for radially pushing the blanks · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10695814B2 cover?
- A method for manufacturing a press-formed product includes: a first step of preparing a long material having a bending portion; and a second step of decreasing curvature of the bending portion while restricting both ends of the long material in a longitudinal direction.
- Who is the assignee on this patent?
- Nippon Steel & Sumitomo Metal Corp, Nippon Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification B21D22/225. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 30 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).