Machine for forming automotive muffler mechanical lock joint

Details Machine for forming automotive muffler mechanical lock joint Machine for forming automotive muffler mechanical lock joint

1986-06-13

1989-04-18

Olszewski, Robert P.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72393, 29251, 29263, 29282, B23P 1904

Patent

active

048213918

ABSTRACT:
An apparatus for forming a muffler mechanical lock joint, and the resulting assembly. An end panel is loaded in a die structure. Die segments on chuck jaws hold an end panel flange. A tube is loaded over a wedge, punch segments, a punch segment holder, barrel and wedge drive rod. The panel, chuck and die structure are driven over the tube. Each punch segment includes a protrusion punch and a bead punch segment. The wedge is axially pulled. Guiding and guided members on the punch segments and segment holder allow only radial movement of the segments. Axial pulling of the wedge thereby causes radial expansion of the punch segments. The radially expanded punch segments form a plurality of protrusions in the tube and panel flange, and an adjacent bead.

REFERENCES:
patent: 1039948 (1912-10-01), Hunter
patent: 1610796 (1926-12-01), King
patent: 3283699 (1966-11-01), Hawkins

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