Apparatus for forming collars in workpieces

Details Apparatus for forming collars in workpieces Apparatus for forming collars in workpieces

1997-02-26

2000-02-08

Jones, David

Metal working

Method of mechanical manufacture

Gas and water specific plumbing component making

2989015, 7237027, 723912, B21C 3729

Patent

active

060215712

ABSTRACT:
The invention concerns apparatus for forming collars in workpieces, where said apparatus comprises a bending former having an inner forming segment (16) and an outer forming segment (12) receiving a workpiece (96), further a plunger (24) for drawing through the bending former and an actuator (50) for the plunger. The actuator (50) comprises a draw bar (62) driven by a drive means (28) and fitted with a system (52) automatically receiving, locking and unlocking the plunger (24).

REFERENCES:
patent: 2368394 (1945-01-01), Zummach
patent: 2507859 (1950-05-01), Keller
patent: 4106322 (1978-08-01), Moshnin
patent: 4178786 (1979-12-01), Rothenberger
patent: 4676088 (1987-06-01), Okada et al.

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