Title: Mold used for manufacturing electric motor rotor
Application Number: 200610163365 Application Date: 2006.12.01
Publication Number: 1983773 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02K15/03
Applicant(s) Name: Fanuc Ltd. Address:
Inventor(s) Name: Maeda Takuya;Okamoto Takashi;Funakubo Makoto;Tamak
Attorney & Agent: zhangjing qiang
Abstract:
    The invention relates to a mold used in a manufacturing process of a rotor of an electric motor, the rotor including a rotor core with a plurality of magnet-retaining apertures and a plurality of permanent magnets individually retained in the magnet-retaining apertures of the rotor core, for pouring a resinous material into gaps defined between the magnet-retaining apertures and the permanent magnets. The mold includes a cavity for accommodating the rotor core at a predetermined position, with the rotor core receiving the permanent magnets individually in the magnet-retaining apertures; and a deformation inhibiting surface provided in the cavity and coming into at least local contact with an outer circumferential surface of the rotor core, during a period when the resinous material is poured into the gaps, to inhibit the bulging deformation of the outer circumferential surface.
Time: 17
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