US 5,346,366 AGranted

Bladed rotor and apparatus for producing same

AssigneeNissan Motor Co., Ltd.

InventorsShinsuke Eguchi, Masayuki Suzuki, Tetsuo Fukuoka

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Abstract

In a bladed rotor of the kind in which each blade has curved side surfaces and having fingers fitted in depressions of a shell and an opening of a core, the depressions of the shell and the opening of the core for receiving therein corresponding fingers of the blades are shaped and arranged so as to have, with respect to an elevational view of the rotor, longitudinal axes which coincide with straight lines extending radially through the center of the rotor, respectively. A die assembly for forming such depressions or openings in the shell or core is also provided. In such a die assembly, first and second die sections are adjustable in relative circumferential position for thereby adjusting the relative circumferential position relationship between the first and second groups of depressions or openings in the shell or core to be produced.

Claims13

Dependent claims

In a torque converter, a bladed rotor comprising a shell, a core and a plurality of blades disposed between the shell and the core, said shell being concentric with an axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section, said core being concentric with the axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section smaller than that of said shell, each of said blades being so shaped, with respect to a cross sectional view of said rotor, as to correspond in shape to a space between the shell and the core, each of said blades having curved side surfaces and having at a shell engaged edge thereof two fingers fitted in slots formed in said shell and at a core engaged edge thereof a finger fitted in a slot formed in said core, said shell engaged edge and said core engaged edge being curved with respect to an elevational view of said rotor so as to extend across a straight line extending radially through the center of said core;

said slots of said shell and said core being shaped and arranged so as to have, with respect to an elevational view of said rotor, longitudinal axes which coincide with straight lines extending radially through the center of said core, respectively;
said slots of said shell and said core being shaped and arranged so as to be formable by punches and dies through relative movement thereof in parallel to the axis of rotation of said rotor;
and
said fingers of said blades being shaped so as to be engageable with said slots of said shell and said core through relative movements of said shell and said blades in parallel to the axis of rotation of said rotor.

1 more element

A die assembly for forming slots in a shell of a bladed rotor, the bladed rotor including the shell, a core and a plurality of blades disposed between the shell and the core, said shell being concentric with an axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section, said core being concentric with the axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section smaller than that of said shell, each of said blades being so shaped, with respect to a cross sectional view of said rotor, as to correspond in shape to a space between the shell and the core, each of said blades having at a shell engaged edge thereof two fingers fitted in the slots formed in said shell and at a core engaged edge thereof a finger fitted in a slot formed in said core;

said slots of said shell and said core being shaped and arranged so as to have, with respect to an elevational view of said rotor, longitudinal axes which coincide with straight lines extending radially through the center of said core, respectively;
said slots of said shell and said core being shaped and arranged so as to be formable by punches and dies through relative movement thereof in parallel to the axis of rotation of said rotor;
said fingers of said blades being shaped so as to be engageable with said slots of said shell and said core through relative movements of said shell and said blades in parallel to the axis of rotation of said rotor;
and
each of said blades being shaped to have curved side surfaces,
said die assembly comprising:
a first die section for forming a first group of the slots which are arranged in a first circular array concentric with the shell;
and
a second die section for forming a second group of the slots which are arranged in a second circular array concentric with the shell,
said first and second die sections being adjustable in relative circumferential position relationship for producing various shells having different circumferential position relationships between the first and second groups of the slots.

7 more elements

A die assembly for forming slots in a core of a bladed rotor, the bladed rotor including a shell, the core and a plurality of blades disposed between the shell and the core, said shell being concentric with an axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section, said core being concentric with the axis of rotation of said rotor and in the form of an axially separated half of a circular ring with a nearly circular cross section smaller than that of said shell, each of said blades being so shaped, with respect to a cross sectional view of said rotor, as to correspond in shape to a space between the shell and the core, each of said blades having at a shell engaged edge thereof two fingers fitted in slots formed in said shell and at a core engaged edge thereof two fingers respectively fitted in two said slots formed in said core;

said slots of said shell and said core being shaped and arranged so as to have, with respect to an elevational view of said rotor, longitudinal axes which coincide with straight lines extending radially through the center of said core, respectively;
said slots of said shell and said core being shaped and arranged so as to be formable by punches and dies through relative movement thereof in parallel to the axis of rotation of said rotor;
said fingers of said blades being shaped so as to be engageable with said slots of said shell and said core through relative movements of said shell and said blades in parallel to the axis of rotation of said rotor;
and
each of said blades being shaped to have curved side surfaces,
said die assembly comprising:
a first die section for forming a first group of the slots which are arranged in a first circular array concentric with the core;
and
a second die section for forming a second group of the slots which are arranged in a second circular array concentric with the core,
said first and second die sections being adjustable in relative circumferential position relationship for producing various cores having different circumferential position relationships between the first and second groups of the slots.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/070,662Filed 2 Jun 1993
Priority: JP 4-17903712 Jun 1992
Granted: 13 Sep 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F16H 41/28
Details: with respect to manufacture, e.g. blade attachment
B21D 53/267
Wheels or the like: blower wheels, i.e. wheels provided with fan elements
B23P 15/006
Making specific metal objects by operations not covered by a single other subclass or a group in this subclass: turbine wheels
B23P 15/02
Making specific metal objects by operations not covered by a single other subclass or a group in this subclass: turbine or like blades from one piece