| 摘要 |
PROBLEM TO BE SOLVED: To form insulating films 14a6 easily and without any influence on dimensional precision. SOLUTION: The protrusions 2b of a core holding jig 2 are brought into contact with the inside of supporting recession 14a5 formed in an annular uniting base 14a1 of a laminated core 14, so as to be out inside the recessions 14a5. The swollen portions 14a7 like burs of the insulating films 14a6 in the portions with which the protrusions 2b of the holding jig 2 are in contact are formed in a state drawn into the supporting recessions 14a5. Besides, generation of damages which occurs by contact of the protrusions 2b when the holding jig 2 is removed are restricted to only the insides of the supporting recessions 14a5 formed in the base 14a1 of the laminated core 14. Consequently, the damage portions and the swollen portions 14a7 of the insulating films 14a6 do not exert any influence on the surface condition and radius of the base 14a1 of the lamented core 14. |
