Method for manufacturing a poppet valve head

Details Method for manufacturing a poppet valve head Method for manufacturing a poppet valve head

1989-05-09

1990-05-22

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

29888452, 72354, B21K 122

Patent

active

049265342

ABSTRACT:
A poppet valve head with its stem, is formed in a female finish forming die cooperating with two male die members. A cylindrical raw blank, which has been heated is cut to length. An extrusion pressing or molding forms the shaft region and widened shaft region. An immediately following upset pressing forms the poppet disk. Both pressing steps are performed in the same female finish forming die made of hard metal mounted in a supporting frame. The female finish forming die has a cylindrical guide region on the poppet disk end. A force actuated annular or ring piston forms a first male die member fitting into the guide region. The raw blank is inserted into a central cavity of the annular piston on a coaxially arranged force actuated extrusion molding stamp forming a second male die member slidable in the central cavity. The extrusion molding stamp is axially slidable together with the annular piston and also axially slidable relative to the annular piston.

REFERENCES:
patent: 1644021 (1927-10-01), Knudsen
patent: 1696646 (1928-12-01), Saives
patent: 2138528 (1938-11-01), Phillipps
patent: 3319321 (1967-05-01), Davis
patent: 3536053 (1970-10-01), Uitcha
patent: 3636605 (1972-01-01), Uitcha et al.
patent: 4741080 (1988-05-01), Larson et al.

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