Method for fabricating a hard disk driving apparatus

A method for fabricating a voice coil motor assembly in a disk drive, comprising:

• affixing a bottom plate onto a base of a housing with adhesive exhibiting conductive characteristics;
• forming a first structure by attaching a first magnet with adhesive exhibiting conductive characteristics onto an exterior surface of said bottom plate;
• treating the surface of the first structure using an electrodeposit coating process;
• affixing a top plate bent into a U-shape to a cover of a housing with adhesive exhibiting conductive characteristics;
• forming a second structure by attaching a second magnet with adhesive exhibiting conductive characteristics onto an interior surface of said top plate;
• treating the surface of the second structure using the electrodeposit coating process;
• and
• mounting the top plate attached to the cover onto the bottom plate affixed to the base.

A method for fabricating a voice coil motor assembly in a disk drive, comprising:

• affixing a bottom plate onto a base of a housing by adhesive exhibiting conductive characteristics;
• forming a first structure by attaching a first magnet by adhesive exhibiting conductive characteristics onto an exterior surface of said bottom plate;
• applying a protection coating on an exterior surface of said first structure;
• affixing a top plate bent into a U-shape to a cover of a housing by adhesive exhibiting conductive characteristics;
• forming a second structure by attaching a second magnet by adhesive exhibiting conductive characteristics onto an interior surface of said top plate;
• applying a protection coating on said second structure;
• mounting the top plate attached to the cover onto the bottom plate affixed to the base.

A method for fabricating a voice coil motor structure in a disk driver, comprising:

• mounting a bottom plate onto a base having nuts integrally embedded therein by screwing a first plurality of screws into the nuts of said base via corresponding tapped holes formed in the bottom plate;
• attaching a first magnet onto an exterior surface of said bottom plate with adhesive exhibiting electrically conductive characteristics;
• treating a surface of the first structure with a protective coating;
• attaching a second magnet onto an interior surface of a top plate having a pair of legs at opposite end portions bent in a L-shape by adhesive exhibiting electrically conductive characteristics;
• treating the surface of the second structure with said protective coating;
• mounting said top plate onto said bottom plate by screwing a second plurality of screws into the nuts of said base via respective holes of the legs and the corresponding tapped holes formed in the bottom plate to form said voice coil motor structure;
• and
• applying an electrodeposit coating on surfaces of said voice coil motor structure.

A disk drive fabrication process comprising:

• mounting an actuator on a base having a substantially rectangular shape and having first and second plurality of threaded nuts integrally formed therein, for rotatably supporting a transducer head to record information on a recording medium and to reproduce information from the recording medium;
• forming a voice coil motor assembly on the base, for enabling said actuator to rotate substantially in a radial direction of the recording medium, said voice coil motor assembly being formed by the steps of:
• affixing a bottom plate having a first magnet attached thereon, on said base by screwing a first plurality of screws into said base via corresponding tapped holes formed in said bottom plate;
• and
• affixing a top plate having legs at opposite end portions bent into a L-shape and having a second magnet attached thereon, on said bottom plate by screwing a second plurality of screws into said base via respective holes of the legs and the corresponding tapped holes formed in said bottom plate, after opposite surfaces of said bottom plate and said top plate have been treated with a protective coating;
• and
• mounting a coil on said actuator between said first and second magnets, for interacting with said magnets to produce magnetic flux enabling said actuator to rotate substantially in the radial direction of the recording medium.

A disk drive fabrication process comprising:

• mounting an actuator on a base having a substantially rectangularly shape, for supporting a transducer head to record information on a recording medium and to read information from the recording medium;
• forming a voice coil motor assembly on said base for enabling said actuator to rotate substantially in a radial direction of the recording medium, said voice coil motor assembly being formed by the steps of:
• affixing a bottom plate having a first magnet attached thereon, on said base by adhesive exhibiting conductive characteristics;
• affixing a top plate bent into a U-shape and having a second magnet attached thereon, on a cover of a housing by said adhesive;
• and
• drawing said top plate against said bottom plate to secure around said bottom plate by said adhesive after each of said bottom plate affixed on said base and said top plate affixed on said cover has been treated with a protective coating;
• and
• mounting a coil on said actuator between said first and second magnets, for interacting with said magnets to produce magnetic flux enabling said actuator to rotate substantially in the radial direction of the recording medium.