Railcar bogie and railcar including same
US-9527516-B2 · Dec 27, 2016 · US
Method of producing plate spring for railcar bogie
US2016200328A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016200328-A1 |
| Application number | US-201414912717-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 6, 2014 |
| Priority date | Oct 9, 2013 |
| Publication date | Jul 14, 2016 |
| Grant date | — |
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Abstract
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A method of producing plate springs for a railcar bogie, the plate springs each extending in a car longitudinal direction and elastically supporting a cross beam while being supported by an axle box in the railcar bogie, the axle box accommodating a bearing for an axle, the method includes: a molding step of molding a mother plate made of fiber-reinforced resin, the mother plate including a layer made of continuous fibers oriented in a first direction when viewed from a normal direction of a main surface of the mother plate; a cut position determining step of determining positions of a plurality of parallel cut lines for cutting the mother plate along the first direction; and a cutting step of cutting the mother plate along the plurality of cut lines to take out the plate springs made of the fiber-reinforced resin.
First claim
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1 . A method of producing plate springs for a railcar bogie, the plate springs each extending in a car longitudinal direction and elastically supporting a cross beam while being supported by an axle box in the railcar bogie, the axle box accommodating a bearing for an axle, the method comprising: a molding step of molding a mother plate made of fiber-reinforced resin, the mother plate including a layer made of continuous fibers oriented in a first direction when viewed from a normal direction of a main surface of the mother plate; a cut position determining step of determining positions of a plurality of parallel cut lines for cutting the mother plate along the first direction; and a cutting step of cutting the mother plate along the plurality of cut lines to take out the plate springs made of the fiber-reinforced resin. 2 . The method according to claim 1 , further comprising a defect inspecting step of inspecting the mother plate to specify a position of a defect portion, wherein in the cut position determining step, the positions of the plurality of cut lines are determined such that the specified position of the defect portion is excluded from a region of the mother plate, the plate springs being taken out from the region of the mother plate. 3 . The method according to claim 1 , wherein in the cut position determining step, the positions of the plurality of cut lines are determined such that widths of the plate springs taken out in the cutting step differ from one another.
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- What does patent US2016200328A1 cover?
- A method of producing plate springs for a railcar bogie, the plate springs each extending in a car longitudinal direction and elastically supporting a cross beam while being supported by an axle box in the railcar bogie, the axle box accommodating a bearing for an axle, the method includes: a molding step of molding a mother plate made of fiber-reinforced resin, the mother plate including a lay…
- Who is the assignee on this patent?
- Kawasaki Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B61F5/30. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jul 14 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).