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Title:
METHOD OF MANUFACTURING RING MEMBER
Document Type and Number:
Japanese Patent JP2009166108
Kind Code:
A
Abstract:

To provide a method of manufacturing a ring member, by which a manufacturing cost can be reduced by improving a yield when forming a sheet material by cutting a belt-like base stock which is pulled out of a coiled material.

After cutting the belt-like base stock 3 pulled out of the coiled material on a first cutting line S1 parallel to a reference cutting line S0, the cut-out member is cut on a second cutting line S2 orthogonally crossing the reference cutting line S0 and the first cutting line S1. In this way, since a scrap is not produced between the cut-out sheet material 4 and the sheet material 4 like the conventional technique, the yield of the material is remarkably improved.


Inventors:
Suzuki, Yuji
Application Number:
JP2008000009142
Publication Date:
July 30, 2009
Filing Date:
January 18, 2008
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B21D31/00; F16G5/16
Domestic Patent References:
JP2007152358A
JP2007296599A2007-11-15
JP2005271091A
Foreign References:
WO2007145502A1
Attorney, Agent or Firm:
▲高▼ 昌宏
宮崎 嘉夫
小野塚 薫
田上 明夫
萼 経夫