Assembling position adjusting mechanism of a spindle motor for a magnetic disk apparatus

An assembling position-adjusting mechanism of a spindle motor for a magnetic disk apparatus comprising:

• a table having a top surface on which a main body of a magnetic disk apparatus including a magnetic head is fixed;
• a positioning head having a bottom surface holding a motor assembly including a spindle motor assembled in said main body of said magnetic apparatus, said bottom surface having engaging means for engaging with said motor assembly to move said motor assembly with a movement of said positioning head to a predetermined position;
• a first moving means for moving said positioning head in a direction perpendicular to said top surface of said table;
• and
• a second moving means, provided in said positioning head, for moving said bottom surface of said positioning head so that said bottom surface of said positioning head moves in a direction parallel to said top surface of said table.
• said main body of said magnetic disk apparatus being fixed on said top surface of said table, and said motor assembly being engaged with said bottom surface of said positioning head and being placed on said main body when assembling said motor assembly to said main body of said magnetic disk apparatus, said motor assembly being moved by operating said second moving means of said positioning head to adjust a position of said motor assembly so that said magnetic head of said main body of said magnetic disk apparatus is at a predetermined position relative to said spindle motor of said motor assembly.