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Title:
METHOD FOR FORMING FEMALE SCREW
Document Type and Number:
Japanese Patent JP2012139740
Kind Code:
A
Abstract:

To provide a method for forming a female screw, which forms a female screw that improves axial force of a male screw.

The method for forming a female screw, presses a machining tool 32 that includes: a hole forming part 100 formed in a tip of the machining tool for boring a hole 110 with respect to a workpiece 12; a screw forming part 102 formed continuously to the hole forming part 100; and a blade 108 formed on a rear end side of the screw forming part 102, onto the workpiece 12 while rotating the machining tool, to form the female screw. The method for forming a female screw, includes: a hole boring step of boring the hole 110 in the workpiece 12 by the hole forming part 100; a female screw forming step of forming the female screw 14 in the hole 110 by the screw forming part 102; and a spot facing forming step of removing an entrance part of the female screw 14 by the blade 108 to form a spot facing 114.


Inventors:
EGUCHI YOTA
TABATA KIMIHIDE
YOSHIMI SHIGENORI
Application Number:
JP2010291994A
Publication Date:
July 26, 2012
Filing Date:
December 28, 2010
Export Citation:
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Assignee:
HONDA MOTOR CO LTD
International Classes:
B23P13/00; B21H3/08; B23G7/00
Domestic Patent References:
JPS6350609U1988-04-06
JP2010052074A2010-03-11
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Shuji Ouchi