Method for making a composite engine cylinder block with preform

Details Method for making a composite engine cylinder block with preform Method for making a composite engine cylinder block with preform

1985-12-11

1987-10-20

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29 33C, 29 33T, 295295, 29DIG5, 123193C, 164 98, B23P 1500, B22D 1900

Patent

active

047004444

ABSTRACT:
A method and apparatus for making engine cylinders comprising the steps of punching cylindrical tubes with openings from the inside to the outside and then surrounding the thus formed tubes with a different body of material. In accordance with the method, the punching apparatus includes a mandrel that slidably supports the dies and a backup die that includes a slug ejecting punch which serves the dual function of ejecting the slugs from the backup die and also retracting the punches. In one embodiment of the invention, the port openings are formed smaller than the final configuration and the surrounding material is cast in place and extends into the liner opening for interlocking the surrounding material to the liner.

REFERENCES:
patent: 1521866 (1925-01-01), Carlson
patent: 3069209 (1962-12-01), Bauer
patent: 3259003 (1966-07-01), Griffin
patent: 4003422 (1977-01-01), Schramm et al.

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