Study on Manufacturing Technology of Middle and Small Sized Motors with Dividing Stator Cores

Development of a Flat Spindle Motor Used for Information Equipment

Abstract

This paper reports study on manufacturing technology of a spindle motor which used for 120MB FDD. This motor is an inner rotor type which is designed a linear shaped dividing block core connected by thin bridges. In coil-winding a linear shaped block core is wound by several nozzles. After winding, the linear shaped block core is bent as a similar conventional circular stator. The influence to the motor characters by the dividing block core with magnetic analysis is invested. The flat spindle motor for 120MB FDD was developed and high manufacture-ability was realized.