Title:
METHOD FOR FORMING BREAKAGE START SECTION OF METALLIC PART
Document Type and Number:
WIPO Patent Application WO/2010/150753
Kind Code:
A1
Abstract:
A method for forming a breakage start section of a metallic part, provided with a first step for forming by machining a groove (11) in a portion of the metallic part (1), said portion corresponding to the breakage start section, and also with a second step for forming recesses (12) in the bottom portion of the groove (11) in such a manner that the recesses (12) are separated from each other at predetermined intervals. The breakage start section of the metallic part, said breakage start section having a stable breakage surface after breakage, can be formed at low cost by the method, and the method can manufacture a connecting rod having uniform breakage surfaces which can be obtained by impact energy significantly lower than that conventionally required. High-quality connecting rods can be obtained while satisfying the demand for energy saving.
Inventors:
HASE HIROICHI (JP)
Application Number:
PCT/JP2010/060487
Publication Date:
December 29, 2010
Filing Date:
June 21, 2010
Export Citation:
Assignee:
YASUNAGA KK (JP)
HASE HIROICHI (JP)
HASE HIROICHI (JP)
International Classes:
B23P13/00; F16C7/02
Foreign References:
| JP2006308027A | 2006-11-09 | |||
| JP2006300081A | 2006-11-02 | |||
| JP2005074537A | 2005-03-24 | |||
| JP2000502149A | 2000-02-22 | |||
| US5208979A | 1993-05-11 | |||
| DE102007053814A1 | 2009-05-14 |
Attorney, Agent or Firm:
MIYAKAWA Kohichi (JP)
Hirokazu Miyagawa (JP)
Hirokazu Miyagawa (JP)
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