Pressing device, method for manufacturing an iron core, method for manufacturing a rotating electric machine, and rotating electric machine

The press device with a punch, backup, stripper, and die configuration addresses warping and strength issues in thin-width portions by maintaining the thin portion's position during punching, ensuring strength and accuracy in the manufacturing process.

JP7868190B2Active Publication Date: 2026-06-01MITSUBISHI ELECTRIC CORP
View PDF 8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-01-16
Publication Date
2026-06-01

Smart Images

  • Figure 0007868190000001
    Figure 0007868190000001
  • Figure 0007868190000002
    Figure 0007868190000002
  • Figure 0007868190000003
    Figure 0007868190000003
Patent Text Reader

Abstract

In this press device for punching out a material (600) to manufacture a product (100), when punching out a thin-width portion (101) of the product (100), the thin-width portion (101) being formed with a width (W1) that is smaller in a width direction (XX) than a plate thickness (T1) of the material (600), the strength of the thin-width portion (101) is ensured by performing punching-out with movement suppressed in all parallel directions of the thin-width portion (101), including a planar direction, a lateral direction (X) and a longitudinal direction (Z).
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Method of producing ringgshaped parts

    JP1978056788A

  • Comparator circuit

    JP1982031226A

  • Punching device of plate material having cleat

    JP1986071132A

  • Press forming method for holes in proximity and emboss

    JP2002143942A

  • Punching method and punching mold for thin steel sheet

    JP2015188934A