Mazda Motor Corporation

Masanori Nakai

Hideo Toyota

Kojiro Yamaguchi

Naohiro Sakaue

Akira Hashimoto

Jun Nakamura

Masashi Morihiro

Katsutoshi Mukai

Koichi Matsuura

Motonori Moriwaki

Shinichiro Tenma

Hiroki Sato

Naoki Ujihira

Koichiro Ichihara

Katsunori Takahashi

A metallic member bonding device includes a pressurizing unit, a current supply unit, and a deformation suppressing unit. The pressurizing unit pressurizes a first metallic member toward a hole portion of a second metallic member to press the first metallic member therein. The current supply unit supplies a welding current between the first metallic member and the second metallic member. The deformation suppressing unit suppresses deformation of one of the first metallic member and the second metallic member, the one member having a constituent metallic material with at least one of a proof stress and a melting temperature lower than that of the other member, the deformation being in a direction of a cross section crossing a direction of the press-in. Then, the deformation suppressing unit is provided in a region covering at least a plastic flow range in the press-in direction.

Metallic member bonding device for pressing rod-shaped or cylindrical first metallic member into hole portion of annular second metallic member to bond the same and bonding method therefor

In a clutch manufacturing method, inner peripheral portions of drum members, of two clutches are connected to a sleeve member, and a piston, a seal plate and a return spring are provided between the drum members, an insulator to apply electric isolation between the piston and the drum member or between the seal plate and another drum member is attached to either the piston or the seal plate. Then, the drum member, to which the electric isolation with the insulator is not applied, is connected to the sleeve member. Then, the piston, return sprig and seal plate are assembled to the sleeve member to which the drum member has been connected. Finally, the drum member, to which the electric isolation with the insulator has been applied, is connected to the sleeve member with electric welding.

Manufacturing method of clutch for automatic transmission and automatic transmission

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Hiroshima, Japan

Masanori Nakai