Curvature retaining device for plate-shaped workpiece, curvature retaining method for plate-shaped workpiece, and curvature forming method for plate-shaped workpiece
US-9802234-B2 · Oct 31, 2017 · US
Plate-shaped workpiece forming method
US9757791B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9757791-B2 |
| Application number | US-201213981794-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2012 |
| Priority date | Mar 31, 2011 |
| Publication date | Sep 12, 2017 |
| Grant date | Sep 12, 2017 |
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Abstract
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A plate-shaped workpiece forming method of post-machining a pocket ( 3 ) on a curved inner surface of a plate-shaped workpiece ( 2 ) in a state where the plate-shaped workpiece ( 2 ) curved by a curving machine ( 10 ) is spread flat. The method includes a curving step (A) of setting a net curve radius (R 0 ) obtained by adding a curve radius contraction amount (R 1 ) due to spring-in to a finished curve radius (R) of a plate-shaped workpiece ( 2 ), taking into account an amount of contraction of the curve radius of the plate-shaped workpiece ( 2 ) between before and after machining of a pocket ( 3 ) due to spring-in, and curving the plate-shaped workpiece ( 2 ) so as to achieve the net curve radius (R 0 ); and a pocket machining step of post-machining the pocket ( 3 ) by flatly spreading the curved plate-shaped workpiece ( 2 ).
First claim
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The invention claimed is: 1. A plate-shaped workpiece forming method of post-machining a pocket on a curved inner surface of a plate-shaped workpiece in a state where the plate-shaped workpiece curved by a curving machine is spread flat, the method comprising: a curving step of setting a net curve radius R 0 obtained by adding a curve radius contraction amount R 1 to a finished curve radius R of the plate-shaped workpiece, taking into account an amount of contraction of a curve…
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Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US9757791B2 cover?
- A plate-shaped workpiece forming method of post-machining a pocket ( 3 ) on a curved inner surface of a plate-shaped workpiece ( 2 ) in a state where the plate-shaped workpiece ( 2 ) curved by a curving machine ( 10 ) is spread flat. The method includes a curving step (A) of setting a net curve radius (R 0 ) obtained by adding a curve radius contraction amount (R 1 ) due to spring-in to a finis…
- Who is the assignee on this patent?
- Sugai Atsushi, Matsunaga Yu, Ogura Daisuke, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification B21D53/92. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 12 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).