MANUFACTURING METHOD OF LAMINATED IRON CORE AND METAL MOLD DEVICE

• Main Authors: YAMATO SHIGETOSHI, IMASADA HIROSHI, MORINAGA YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a manufacturing method of a laminated iron core and a metal mold device which can adjust a fastening strength for caulking, correspond to manufacturing of various laminated iron cores, and also suppress damage of a pushing punch and a blank die.SOLUTION: In a manufacturing method of a laminated iron core and a metal mold device 10 in which the laminated iron core is formed by punching plural core pieces with calking portions formed from a strip material and stacking them through calking using a blank punch 11 and a blank die, when punching the core pieces from the strip material and stacking them through calking, a tip part of a push punch 16 which is incorporated in the blank punch 11 and presses the calking portions projects from the blank punch 11 or is accommodated in the blank punch 11 by push punch drive means 17.SELECTED DRAWING: Figure 1 【課題】かしめ締結力が調整可能で多種多様な積層鉄心の製造に対応でき、プッシュパンチやブランクダイの損傷も抑制可能な積層鉄心の製造方法及び金型装置を提供する。【解決手段】ブランクパンチ１１及びブランクダイを用いて、かしめ部が形成された複数の鉄心片を条材から打ち抜きかしめ積層する積層鉄心の製造方法及び金型装置１０であり、鉄心片を条材から打ち抜きかしめ積層する際に、プッシュパンチ駆動手段１７により、ブランクパンチ１１に内蔵されかしめ部を押圧するプッシュパンチ１６の先部を、ブランクパンチ１１から突出又はブランクパンチ１１内に収容する。【選択図】図１