To provide a manufacturing method by which both members can firmly be joined and dimensional control is easily performed, in the manufacturing method for stator core composed of a cylindrical non-magnetic material and annular magnetic materials provided to both ends of the cylindrical non-magnetic material.
1. In the manufacturing method for the stator core, the non-magnetic body A (1) is composed of a material which shrinks by sintering and both ends of which have first engaging surfaces directed to the inner part in the diameter direction, and the magnetic body B (2) is composed of a material which expands or does not change the dimension by the sintering and has second engaging surfaces engaged with the first engaging surfaces. 2. In the manufacturing method for the stator core, the non-magnetic body A (1) is composed of a material which expands or does not change the dimension by the sintering and both ends of which have first engaging surfaces to the outer part in the diameter direction, and the magnetic body B (2) is composed of a material which shrinks with the sintering and has second engaging surfaces engaged with the first engaging surfaces.
YAMAMOTO HARUKI
SASAKO SHUNPEI
UEDA YOSHIHISA
FINESINTER CO LTD
Kakehi Yuro
Jun Fujii