Base member, spindle motor, and hard disk drive device
AssigneeMINEBEA MITSUMI Inc.
InventorsHideaki SHOWA, Kazuo SATO, Junichi NAKANE
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Abstract
A base member serves as a part of a housing of a hard disk drive device. The base member includes a base body being a cast product, a first machined surface obtained by machining a portion formed with a convex portion of the base body, and a coating film covering a surface of the base body. The base body includes a coated surface obtained by covering the first machined surface with the coating film, and a second machined portion obtained by machining a part of the base body other than the first machined surface.
Claims5
A method of manufacturing a base member serving as a part of a housing of a hard disk drive device, the method comprising:
- molding a base body by casting;
- first machining of machining a portion formed with a convex portion of the base body and forming a first machined surface;
- coating of forming a coating film at a surface including the first machined surface of the base body;
- and
- second machining of machining a part of a surface of the base body other than the first machined surface and forming a second machined portion.
A base member serving as a part of a housing of a hard disk drive device, the base member comprising:
- a base body being a cast product;
- a first machined surface obtained by machining a portion formed with a convex portion of the base body;
- and
- a coating film covering a surface of the base body, wherein
- the base body includes
- a coated surface obtained by covering the first machined surface with the coating film, and
- a second machined portion obtained by machining a part of the base body other than the first machined surface.
Dependencies are inferred from the claim text.