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US 11,530,706 B2Granted
Rotating body, turbocharger, and rotating body manufacturing method
AssigneeIHI Corporation
InventorsKenichi Segawa, Akitada Narimatsu
Life of this patent
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Abstract
Provided is a rotating body, including: a shaft; and a compressor impeller including: a main body having an insertion hole, which extends from one end to another end side and is configured to receive the shaft inserted therethrough; a boss portion formed at one end side of the main body; and a joint portion, which is formed on an inner peripheral surface of the insertion hole at the boss portion and is welded to the shaft.
Claims12
A rotating body, comprising:
- a shaft;
- and
- a compressor impeller including:
- a main body having an insertion hole, the insertion hole extending from a first end of the main body to a second end of the main body and being configured to receive the shaft inserted therethrough;
- a boss portion formed at a first end side of the main body;
- and
- a joint portion which is formed on an inner peripheral surface of the insertion hole at the boss portion, and is welded to the shaft
- wherein the insertion hole includes:
- a smaller-inner-diameter portion formed on a second end side with respect to the boss portion, and
- a radially expanded portion, which is located between the smaller-inner-diameter portion and the joint portion, and has an inner diameter larger than an inner diameter of the smaller-inner-diameter portion,
- the radially expanded portion is located inside the boss portion.
8 more elements
A manufacturing method for a rotating body, comprising:
- inserting a shaft through an insertion hole extending from a first end to a second end of a main body of a compressor impeller;
- and
- joining a boss portion, which is formed at the first end of the main body, and the shaft by electromagnetic forming,
- wherein the insertion hole includes:
- a smaller-inner-diameter portion formed on a second end side with respect to the boss portion, and
- a radially expanded portion, which is located between the smaller-inner-diameter portion and the joint portion, and has an inner diameter larger than an inner diameter of the smaller-inner-diameter portion,
- the radially expanded portion is located inside the boss portion.
4 more elements
Dependencies are inferred from the claim text.