Method of forming a cylindrical member

Details Method of forming a cylindrical member Method of forming a cylindrical member

1979-10-11

1982-01-12

Godici, Nicholas P.

Metal deforming

Process

Tube making or reshaping

291495DP, B21C 3706, B21D 5310

Patent

active

043098908

ABSTRACT:
A strip material is subjected to an end bending step, and subsequently the bent ends of the strip material, namely, those portions of the strip material which are located adjacent to its abutting ends, are pre-coined to increase the accuracy in the region of the abutting ends, followed by a conventional U-bending and a final coining step, thereby producing a cylindrical material. The use of the pre-coining step for the abutting ends improves the circularity of the cylindrical member.

REFERENCES:
patent: 652658 (1900-06-01), Bischoff
patent: 1330782 (1920-02-01), Brown
patent: 1964584 (1934-06-01), Klocke
patent: 2031982 (1936-02-01), Salzman
patent: 3166827 (1965-01-01), Bushi
patent: 3521343 (1970-07-01), Green

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