| 摘要 |
PURPOSE:To eliminate a lamination shift of thin plates and to omit a mold to shorten the lead time of production of a lamination core, by cutting a lamination matter containing magnetic thin plates laminated previously by a laser beam, etc. for production of lamination cores. CONSTITUTION:A prescribed number of magnetic thin plates 1 are laminated via the adhesive resin 2, and nonmagnetic thin plates 3 are stuck to both sides of a lamination substance 4 as the reinforcement plates via the resin. A core material 5 is positioned on an XY table 9. A cutting is carried out with the O2 gas sprayed at a point of irradiation of a laser beam. Both motors 9a and 9b are controlled to move the table 9 along a desired form of a core. Thus a lamination core 10 is obtained with a prescribed form. In such a way, the plates 1 laminated previously are cut and therefore a conventional position shift due to lamination can be avoided. Furthermore the loss of material is reduced by controlling a cutting layout since the cutting width of the laser beam is limited in a range of about 0.1-0.2mm. This improves the yield of materials.
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