Apparatuses, systems and methods for three-dimensional printing
US-2015367447-A1 · Dec 24, 2015 · US
Welding method
US2016288262A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016288262-A1 |
| Application number | US-201615060679-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 4, 2016 |
| Priority date | Apr 3, 2015 |
| Publication date | Oct 6, 2016 |
| Grant date | — |
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Abstract
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A welding method according to the invention is a welding method in which welding is performed by emitting a high-energy beam onto a welding object that includes a plurality of overlapped metal sheets. This welding method includes forming a tack weld nugget at a welding point on the welding object, and forming a plurality of final weld nuggets along a virtual closed curve that encircles the tack weld nugget, while leaving the tack weld nugget, at the welding point.
First claim
Opening claim text (preview).
What is claimed is: 1 . A welding method in which welding is performed by emitting a high-energy beam onto a welding object that includes a plurality of overlapped metal sheets, comprising: forming a tack weld nugget at a welding point on the welding object; and forming a plurality of final weld nuggets along a virtual closed curve that encircles the tack weld nugget, while leaving the tack weld nugget, at the welding point. 2 . The welding method according to claim 1 , wherein the tack weld nugget is formed at the welding point on the welding object by spot welding; and the plurality of final weld nuggets are formed by emitting the high-energy beam along the virtual closed curve that encircles the tack weld nugget, while leaving the tack weld nugget, at the welding point. 3 . The welding method according to claim 1 , wherein a size of the tack weld nugget is made smaller than a size of each of the plurality of final weld nuggets. 4 . The welding method according to claim 1 , wherein a size of the tack weld nugget is made smaller than a size of one of the final weld nuggets. 5 . The welding method according to claim 1 , wherein the tack weld nugget and the plurality of final weld nuggets are formed separated from each other. 6 . The welding method according to claim 1 , wherein a laser beam is used as the high-energy beam. 7 . The welding method according to claim 1 , wherein the virtual closed curve corresponds to a circumscribed circle of the final weld nuggets. 8 . The welding method according to claim 1 , wherein the virtual closed curve corresponds to the welding point. 9 . The welding method according to claim 3 , wherein the tack weld nugget and the final weld nugget have circular shapes; and the size of the tack weld nugget is a diameter of the tack weld nugget, and the size of the final weld nugget is a diameter of the final weld nugget. 10 . The welding method according to claim 4 , wherein the tack weld nugget and the final weld nugget have a circular shape; and the size of the tack weld nugget is a diameter of the tack weld nugget, and the size of the final weld nugget is a diameter of the final weld nugget. 11 . The welding method according to claim 3 , wherein the tack weld nugget and the final weld nugget have an elliptical shape; and the size of the tack weld nugget is a major axis length of the tack weld nugget, and the size of the final weld nugget is a major axis length of the final weld nugget. 12 . The welding method according to claim 4 , wherein the tack weld nugget and the final weld nugget have an elliptical shape; and the size of the tack weld nugget is a major axis length of the tack weld nugget, and the size of the final weld nugget is a major axis length of the final weld nugget. 13 . The welding method according to claim 3 , wherein the tack weld nugget and the final weld nugget have an elliptical shape; and the size of the tack weld nugget is an average value of a major axis length of the tack weld nugget and a minor axis length of the tack weld nugget, and the size of the final weld nugget is an average value of a major axis length of the final weld nugget and a minor axis length of the final weld nugget. 14 . The welding method according to claim 4 , wherein the tack weld nugget and the final weld nugget have an elliptical shape; and the size of the tack weld nugget is an average value of a major axis length of the tack weld nugget and a minor axis length of the tack weld nugget, and the size of the final weld nugget is an average value of a major axis length of the final weld nugget and a minor axis length of the final weld nugget.
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- What does patent US2016288262A1 cover?
- A welding method according to the invention is a welding method in which welding is performed by emitting a high-energy beam onto a welding object that includes a plurality of overlapped metal sheets. This welding method includes forming a tack weld nugget at a welding point on the welding object, and forming a plurality of final weld nuggets along a virtual closed curve that encircles the tack…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23K26/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 06 2016 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).