Patent ID: 7483242

Claim:
An arm positioning apparatus for manufacturing a rotary type actuator which comprises arms in a plate shape for holding head suspension elements at one end, a holder in a cylindrical shape for holding said arms which are oscillated by supporting the other end of each of said arms, and a single coil part around which a wire is wound in an aligned manner, and secures said arms, said holder and said coil part at a predetermined position by resin molding, and said arm positioning apparatus comprises: a positioning pin for positioning said arms by insertion into suspension element attachment holes of said arms which are placed at predetermined positions in said holder, wherein said positioning pin has a small diameter portion that is engaged in the suspension element attachment holes and a cone portion which has a diameter that gradually spreads outward from said small diameter portion, and said pin holder of said pin positioning means has a cylindrical surface with a small diameter that guides the movement of the small diameter portion of said positioning pin and an inclined surface that makes contact with and is positioned by the cone portion of said positioning pin; and a pin positioning means having a pin holder for holding said positioning pin which is movable in the arm positioning direction for positioning said arms at predetermined positions by restricting the movement of said positioning pin at the time of arm positioning and for releasing the restriction to said positioning pin after the completion of arm positioning.