Pre-hemming apparatus
US-9669452-B2 · Jun 6, 2017 · US
Press forming method
US2015298193A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015298193-A1 |
| Application number | US-201314443744-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 28, 2013 |
| Priority date | Dec 17, 2012 |
| Publication date | Oct 22, 2015 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A press forming method of press forming a formed part including a top portion having a concave outer edge with a part of the outer edge being concave inwards and a flange portion subjected to bending forming along the concave outer edge of the top portion includes: a first forming step of forming a preformed shape part including, in a part where the flange portion is formed in a blank material, a vertical wall portion that becomes a part of the flange portion and a mountain shaped portion that is bent outwards from the vertical wall portion and is convex towards the top portion; and a second forming step of forming the flange portion by performing bending forming on a part including the mountain shaped portion of the preformed shape part formed at the first forming step along a bending line that is a boundary from the vertical wall portion.
First claim
Opening claim text (preview).
1 . A press forming method of press forming a formed part comprising a top portion having a concave outer edge with a part of the outer edge being concave inwards and a flange portion subjected to bending forming along the concave outer edge of the top portion, the press forming method comprising: a first forming step of forming a preformed shape part including, in a part where the flange portion is formed in a blank material, a vertical wall portion that becomes a part of the flange portion and a mountain shaped portion that is bent outwards from the vertical wall portion and is convex towards the top portion; and a second forming step of forming the flange portion by performing bending forming on a part including the mountain shaped portion of the preformed shape part formed at the first forming step along a bending line that is a boundary from the vertical wall portion. 2 . The press forming method according to claim 1 , wherein the first forming step comprises: holding a part of the blank material, the part becoming the top portion, between a pad and a first die; and Forming a part of the blank material, the part becoming the flange portion, by a first punch, and the second forming step comprises: holding a part of the preformed shape part, the part becoming the top portion, between the pad and a second die; and forming the flange portion by a second punch that is along a shape including the mountain shaped portion of the preformed shape part.
Assignees
Inventors
Classifications
for making peculiarly, e.g. irregularly, shaped articles · CPC title
on brakes making use of clamping means on one side of the work · CPC title
- B21D19/08Primary
by single or successive action of pressing tools, e.g. vice jaws · CPC title
Working sheet metal of limited length by stretching, e.g. for straightening · CPC title
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- What does patent US2015298193A1 cover?
- A press forming method of press forming a formed part including a top portion having a concave outer edge with a part of the outer edge being concave inwards and a flange portion subjected to bending forming along the concave outer edge of the top portion includes: a first forming step of forming a preformed shape part including, in a part where the flange portion is formed in a blank material,…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification B21D19/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 22 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).