US 11,536,321 B2Granted

Manufacturing method of tooth part, tooth part, and processing device of tooth part

AssigneeAisin Corporation

InventorsRyo Matsumoto, Takuya Maruyama

Life of this patent

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Abstract

The tooth part includes: a tubular portion having an inner tooth portion formed on an inner peripheral surface and an outer tooth portion formed on an outer peripheral surface; a plurality of inner peripheral wall portions that each extend in an axial direction of the tubular portion and form a tooth tip portion of the inner tooth portion and a tooth bottom portion of the outer tooth portion; a plurality of outer peripheral wall portions that each extend in the axial direction and form a tooth bottom portion of the inner tooth portion and a tooth tip portion of the outer tooth portion; and an annular rib that is joined to the outer peripheral wall portions and that extends in an annular shape on an open end side with respect to the inner peripheral wall portions in the axial direction and radially outward from the inner peripheral wall portions, at an open end of the tubular portion.

Claims4

Dependent claims

A manufacturing method of a tooth part including a tubular portion, an inner tooth portion formed on an inner peripheral surface of the tubular portion, and an outer tooth portion formed on an outer peripheral surface of the tubular portion, wherein

a plurality of inner peripheral wall portions that each extend in an axial direction of the tubular portion and form a tooth tip portion of the inner tooth portion and a tooth bottom portion of the outer tooth portion, a plurality of outer peripheral wall portions that each extend in the axial direction and form a tooth bottom portion of the inner tooth portion and a tooth tip portion of the outer tooth portion, and a plurality of tooth surface portions that each extend in the axial direction and connect the corresponding inner peripheral wall portion and the corresponding outer peripheral wall portion are formed in the tubular portion, and
an annular rib that extends in an annular shape on a radially outer side than the inner peripheral wall portions is formed by pushing out the inner peripheral wall portions and the tooth surface portions radially outward while shearing to separate the inner peripheral wall portions and the tooth surface portions from the tooth tip portion, at an open end of the tubular portion.

Dependencies are inferred from the claim text.

Facts

Application: 16/769,441Filed 25 Jan 2019
Priority: JP JP2018-01572231 Jan 2018
Published: US 2020/0393003 A117 Dec 2020
Granted: 27 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16D 13/60
Details: clutching elements
B21D 15/02
Corrugating tubes: longitudinally
B21D 22/02
Shaping without cutting, by stamping, spinning, or deep-drawing: stamping using rigid devices or tools
B21D 37/10
Tools as parts of machines covered by this subclass: die sets; Pillar guides