Title:
METHOD FOR FORMING BURRING THREAD PORTION ON PLATE
Document Type and Number:
Japanese Patent JP2003220522
Kind Code:
A
Abstract:
To provide a method for forming a burring thread portion on a plate without forming burrs.
The method comprises the steps of forming a boss shape portion on the plate, punching a hole at the central portion of the boss shape portion, and forming the burring thread portion by threading the hole of the boss shape portion.
Inventors:
ITO SHINICHI
HASEGAWA KENJI
HASEGAWA KENJI
Application Number:
JP2002020643A
Publication Date:
August 05, 2003
Filing Date:
January 29, 2002
Export Citation:
Assignee:
DENSO CORP
HASEGAWA DENKI KK
HASEGAWA DENKI KK
International Classes:
B23P13/00; B21D35/00; (IPC1-7): B23P13/00; B21D35/00
Attorney, Agent or Firm:
Takashi Ishida (2 outside)