Helical coil spring end forming

Details Helical coil spring end forming Helical coil spring end forming

1981-07-02

1984-04-10

Stallard, W.

Metallurgical apparatus

Means for cutting solid metal with heat, e.g., blowpipes

With means for cutting tubular workpiece

266 62, B23K 710

Patent

active

044416962

ABSTRACT:
Helical coil springs for use in such active load supporting functions as railway car trucks, require end forming such that tapered ends are provided which fit flat against the surfaces to be resiliently supported. A process and an apparatus for forming such spring ends by flame cutting is provided.

REFERENCES:
patent: 2035765 (1936-03-01), Schmidt
patent: 2528147 (1950-10-01), Jesonis
patent: 3300201 (1967-01-01), Atkinson
patent: 3790144 (1974-02-01), Waldron
patent: 4052039 (1977-10-01), Koyano et al.
patent: 4148467 (1979-04-01), Sargeant

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