Disc storage device having an integrated driving system

A method of manufacturing a data storage device comprising the steps of:

• forming an integral base plate member;
• machining a pair of bores in said base plate member while said member is fixed in a single chucking position which is precisely located with respect to the machining tool;
• and
• assembling a shaft in each of said bores, a first of said shafts operating to establish the rotation axis of at least one rotatable data storage member and the second of said shafts operating to define the pivot axis of an arm supporting one or more data sensing heads cooperating with the storage surface of said data storage member.

A disc storage device, comprising:

• a housing defining a clean room,
• at least one storage disc provided in said clean room;
• at least one scanning head provided in said clean room;
• a one-piece chassis forming part of said clean room, said chassis being formed of metal and having first and second motor mounting elements integrally formed thereon, said first and second motor mounting elements having first and second bores associated therewith, said bores having been precision machined concentric with first and second axes, respectively, in one machining step without rechucking said one-piece chassis to obtain a precisely adjusted relationship between said bores;
• a disc motor mounted on said one-piece chassis, said disc motor having a shaft which is mounted on said first motor mounting element coaxial with said first bore and further including a disc mounting member supporting said at least one disc for rotation about said first axis;
• a scanning head motor mounted on said second motor mounting element and operatively engaged with said at least one scanning head to allow said at least one scanning head to be moved relative to said at least one disc, said scanning head motor having a member aligned with said second bore for establishing the path of movement of said at least one scanning head;
• and
• said disc motor further including an external rotor for co-rotation with said disc mounting member.

A disc storage device, comprising:

• a housing defining a clean room,
• at least one storage disc provided in said clean room;
• at least one scanning head provided in said clean room;
• a one-piece chassis forming part of said clean room, said chassis being formed of metal and having first and second motor mounting elements integrally formed thereon, said first and second motor mounting elements having first and second bores associated therewith, said bores having been precision machined concentric with first and second axes, respectively, in one machining step without rechucking said one-piece chassis to obtain a precisely adjusted relationship between said bores;
• a disc motor mounted on said one-piece chassis, said disc motor having a shaft which is mounted on said first motor mounting element coaxial with said first bore and further including a disc mounting member supporting said at least one disc for rotation about said first axis;
• a scanning head motor mounted on said second motor mounting element and operatively engaged with said at least one scanning head to allow said at least one scanning head to be moved relative to said at least one disc, said scanning head motor having a member aligned with said second bore for establishing the path of movement of said at least one scanning head;
• and
• said at least one disc including a central opening through which said disk mounting member extends to support said at least one disc for rotation about said first axis and said disc motor being located in a space defined within said disc mounting member.

A disc storage device, comprising:

• a housing defining a clean room,
• at least one storage disc provided in said clean room;
• at least one scanning head provided in said clean room;
• a one-piece chassis forming part of said clean room, said chassis being formed of metal and having first and second motor mounting elements integrally formed thereon, said first and second motor mounting elements having first and second bores associated therewith, said bores having been precision machined concentric with first and second axes, respectively, in one machining step without rechucking said one-piece chassis to obtain a precisely adjusted relationship between said bores;
• a disc motor mounted on said one-piece chassis, said disc motor having a shaft which is mounted on said first motor mounting element coaxial with said first bore and further including a disc mounting member supporting said at least one disc for rotation about said first axis;
• a scanning head motor mounted on said second motor mounting element and operatively engaged with said at least one scanning head to allow said at least one scanning head to be moved relative to said at least one disc, said scanning head motor having a member aligned with said second bore for establishing the path of movement of said at least one scanning head;
• and
• said disc motor further including a permanent magnetic rotor wherein said disc mounting member and said permanent magnet rotor are supported on
• opposite sides of said chassis.

A disc storage device, comprising:

• a housing defining a clean room,
• at least one storage disc provided in said clean room;
• at least one scanning head provided in said clean room;
• a one-piece chassis forming part of said clean room, said chassis being formed of metal and having first and second motor mounting elements integrally formed thereon, said first and second motor mounting elements having first and second bores associated therewith, said bores having been precision machined concentric with first and second axes, respectively, in one machining step without rechucking said one-piece chassis to obtain a precisely adjusted relationship between said bores;
• a disc motor mounted on said one-piece chassis, said disc motor having a shaft which is mounted on said first motor mounting element coaxial with said first bore and further including a disc mounting member supporting said at least one disc for rotation about said first axis;
• a scanning head motor mounted on said second motor mounting element and operatively engaged with said at least one scanning head to allow said at least one scanning head to be moved relative to said at least one storage disc, said scanning head motor having a member aligned with said second bore for establishing the path of movement of said at least one scanning head;
• and
• said disc motor further including bearings for mounting said disc motor shaft for rotation about said first axis.

A disc storage device, comprising:

• a housing defining a clean room,
• at least one storage disc provided in said clean room;
• at least one scanning head provided in said clean room;
• a one-piece chassis forming part of said clean room, said chassis being formed of metal and having first and second motor mounting elements integrally formed thereon, said first and second motor mounting elements having first and second bores associated therewith, said bores having been precision machined concentric with first and second axes, respectively, in one machining step without rechucking said one-piece chassis to obtain a precisely adjusted relationship between said bores;
• a disc motor mounted on said one-piece chassis, said disc motor having a shaft which is mounted on said first motor mounting element coaxial with said first bore and further including a disc mounting member supporting said at least one disc for rotation about said first axis;
• and
• a scanning head motor mounted on said second motor mounting element and operatively engaged with said at least one scanning head to allow said at least one scanning head to be moved relative to said at least one storage disc, said scanning head motor having a member aligned with said second bore for establishing the path of movement of said at least one scanning head.