Method of manufacturing a tube and a machine for use therein
US-10864566-B2 · Dec 15, 2020 · US
Hollow shaft
US12083571B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12083571-B2 |
| Application number | US-202017430859-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 19, 2020 |
| Priority date | Mar 20, 2019 |
| Publication date | Sep 10, 2024 |
| Grant date | Sep 10, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hollow shaft includes a cylindrical main body part and an extremity drawn part that is integrally connected to one end of the main body part on the same axis and whose diameter is made smaller than a diameter of the main body part by drawing processing, wherein an inner peripheral face of the main body part and an inner peripheral face of a base portion, which is continuous with one end side of the main body part, of the extremity drawn part are formed as cut faces that are subjected to cutting processing before the drawing processing, and an inner peripheral face of a tip portion, which is continuous with an extremity side of the base portion, of the extremity drawn part is a non-cut face. Accordingly, the hollow shaft can be molded with high shape precision while maintaining a low drawing ratio for an extremity drawn part.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hollow shaft comprising a cylindrical main body part and an extremity drawn part that is integrally connected to one end of the main body part on the same axis and whose diameter is made smaller than a diameter of the main body part by drawing processing, wherein an inner peripheral face of the main body part and an inner peripheral face of a base portion, which is continuous with said one end of the main body part, of the extremity drawn part are formed as machining faces, an inner peripheral face of a tip portion, which is continuous with an extremity side of the base portion, of the extremity drawn part is formed as a non-machining face, a border between the machining faces and the non-machining face is positioned on a tapered face of the extremity drawn part, and a thickness of the hollow shaft in a range from the border to the tip portion is greater than a thickness of the hollow shaft in a range from the border to the base portion.
Assignees
Inventors
Classifications
Shape · CPC title
of metal (F16L9/16 - F16L9/22 take precedence) · CPC title
Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape · CPC title
Shafts (flexible shafts F16C1/00; marine propeller shafts, paddle wheel shafts B63H23/34); Axles; Cranks; Eccentrics · CPC title
Shafts; Axles · CPC title
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- What does patent US12083571B2 cover?
- A hollow shaft includes a cylindrical main body part and an extremity drawn part that is integrally connected to one end of the main body part on the same axis and whose diameter is made smaller than a diameter of the main body part by drawing processing, wherein an inner peripheral face of the main body part and an inner peripheral face of a base portion, which is continuous with one end side …
- Who is the assignee on this patent?
- Musashi Seimitsu Kogyo Kk
- What technology area does this patent fall under?
- Primary CPC classification B21C37/16. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 10 2024 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).