Title:
PUNCHING METHOD FOR METAL PLATE, AND PUNCHING SYSTEM FOR METAL PLATE
Document Type and Number:
Japanese Patent JP2017005945
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a punching method for a metal plate which is punched to easily and highly accurately form a narrow installation part.SOLUTION: A work 28 is punched by shearing to form an installation part 29. After a plurality of housing holes 24 are opened in a pre-process, an outer peripheral side of a group of the housing holes 24 is punched circular to form a core plate 22 while holding an inner periphery of the housing holes 24 in a post-process, and the narrow installation part 29 is formed between the inner periphery of the housing holes 24 and an outer periphery of the core plate 22.SELECTED DRAWING: Figure 12
Inventors:
HIRATA KAZUYUKI
Application Number:
JP2015120386A
Publication Date:
January 05, 2017
Filing Date:
June 15, 2015
Export Citation:
Assignee:
TOYOTA BOSHOKU CORP
International Classes:
H02K15/02; B21D28/02; H02K1/22; H02K1/27
Domestic Patent References:
| JPS58163247A | 1983-09-28 | |||
| JPH01284433A | 1989-11-15 |
Foreign References:
| US20110048095A1 | 2011-03-03 | |||
| CN101989790A | 2011-03-23 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
Previous Patent: Direct-current stabilized power supply system
Next Patent: A manufacturing method of Commutator and Commutator
Next Patent: A manufacturing method of Commutator and Commutator