Nidec Corporation

Katsutoshi Hamada

Kaoru Uenosono

Kiyofumi Inoue

Kimihiko Hajota

Yoshiki Okayama

Shigeki Fukuda

Akira Kagata

Takayuki Okada

In a laser processing method, a workpiece is set with respect to a jig having a laser passage hole and a relative position of the jig and the workpiece is determined so that the laser passage hole can face toward a target processing point on the workpiece. Then, laser light is irradiated on the target processing point through the laser passage hole while creating a stream of an inert gas flowing from a peripheral area of the target processing point toward the target processing point and flowing away from the workpiece through the laser passage hole.

Laser processing method

A bearing mechanism includes a shaft, a bearing portion, and a cover closing a bottom end of the bearing portion. The bearing portion and the cover are preferably connected to one another by laser welding. A surface of a welded portion formed by the laser welding includes an inclined surface which is inclined such that the further from a central axis a portion thereof is, the axially higher the portion is. With this unique structure, contamination of lubricant used inside the bearing mechanism by fumes generated due to the laser welding is minimized, and therefore a reliable and durable bearing mechanism is provided.

Bearing mechanism, spindle motor and data storage medium drive apparatus

In a manufacturing method, energy beam heat is radiated to a target area of the motor assembly which is used for a storage disk drive. By radiating energy beam thereto, a portion of the motor assembly is deformed in a non-contact manner, thus, without being affected by elastic recovery of a portion of the motor assembly to be deformed, the machining accuracy of the motor assembly is adjusted in a precise manner.

Motor assembly and method of manufacturing thereof

A method of manufacturing a fluid dynamic bearing in which a stopper is fixed by welding. The bearing comprises a hub, a shaft erected on the hub, a sleeve, a cylindrical wall erected on the hub, and the stopper mounted on the cylindrical wall. The method comprises a first step to hold oil in the bearing gap, and a second step to locate the stopper on the peripheral wall being apart from the interface of the oil to fix the stopper by LASER welding.

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Kyoto, Japan

Katsutoshi Hamada