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Patent Searching and Data


Title:
METHOD OF MANUFACTURING TWIN TANK RAIL FOR TWO-WHEELED VEHICLE
Document Type and Number:
Japanese Patent JP2010000526
Kind Code:
A
Abstract:

To obtain a method of manufacturing a twin tank rail for two-wheeled vehicles by which the lightening of weight and the reduction of cost are easily done.

By downward bending the rear end part of a hollow base stock (41) with a bender roller machine (20), a pair of primary hollow base stocks (41-1) are formed, divided into two of the right and left and also two sets of divided dies (23) having forming surfaces (24) which are corresponding to the external shape of the tank rail are provided. By clamping each primary hollow base stock (41-1) respectively from the right and left directions with each divided die (23), a pair of secondary hollow base stocks (41-2) at least the front end parts of which are respectively bent in the reverse right and left directions are formed and also, by surrounding the outer peripheries of the secondary hollow base stocks (41-2) with the divided dies (23) and, in such a state, forcing liquid into each secondary hollow base stock (41-2), the peripheral walls are plastically deformed along the forming surfaces (24) of the divided dies (23).


Inventors:
HASHIMOTO TAKAHIKO
Application Number:
JP2008000162115
Publication Date:
January 07, 2010
Filing Date:
June 20, 2008
Export Citation:
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Assignee:
KYOEI SEISAKUSHO
International Classes:
B21D53/86; B21D7/00; B21D26/033; B62K11/04; B62K19/06
Attorney, Agent or Firm:
増田 恒則