Apparatus for producing rigid elongated member for use in vehicl

Details Apparatus for producing rigid elongated member for use in vehicl Apparatus for producing rigid elongated member for use in vehicl

1997-12-31

1999-07-27

Crane, Daniel C.

Metal working

Plural diverse manufacturing apparatus including means for...

Binding or covering and cutting

29 33T, 298972, 72181, B21D 3902

Patent

active

059269308

ABSTRACT:
An apparatus producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel central rotational axes. The circumferential faces of the first forming rolls include annular main body portion bending sections that form the main body portion in the strip and adjacent transition portion bending sections that form adjacent transition portions in the strip, thereby forming an intermediate stage elongated member. The transition portions have a cross-section that changes continuously from the annular cross-section of the main body portion to a different cross-section of the terminal portions. The intermediate elongated member is further formed by annular main body portion and transition portion bending sections of the second forming rolls corresponding to the respective bending sections of the first forming rolls in circumferential length but having a different axial dimension such that the intermediate stage elongated member approaches a shape of the fully-formed elongated member.

REFERENCES:
patent: 3638465 (1972-02-01), Lickliter
patent: 4006617 (1977-02-01), Foster
patent: 4411103 (1983-10-01), Ohmura et al.
patent: 4558577 (1985-12-01), Trishevsky
patent: 4838606 (1989-06-01), Furubayashi et al.
patent: 5104026 (1992-04-01), Sturrus et al.
patent: 5689986 (1997-11-01), Jacobs

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