Press for producing precision parts from powdered material

Details Press for producing precision parts from powdered material Press for producing precision parts from powdered material

1988-11-17

1990-05-08

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means for molding powdered metal

425193, 425354, 425355, 425411, 4254515, 425592, B30B 1102

Patent

active

049233823

ABSTRACT:
A press, especially for the manufacture of die-formed parts of dimensional accuracy made of powdered materials is described, which can be equipped and used interchangeably either for the use of the so-called smoothing process or the so-called plunger process. It includes a press support 103 on which a fixed press bed 104 and a vertically slidable press frame 105 are mountred for movement relative to each other by a mechanical drive, preferably a toggle linkage 106, to form a main press ram. Further, it has a bottom ram passing upwardly through the press bed 104 which serves as a smoothing ram or a plunger ram, being operated for both purposes by a double-arm lever 123 pivoted on the press support and actuated by a rock lever 133 likewise pivoted on the press support 103 and having a sliding pivoting connection to the double-arm lever 123. The rock lever 133 can be driven selectively from one or the other of two cam-follower arms pivoted on the press support 103 coaxially with the rock lever 133 and each separately engaged with one of two radial cams.

REFERENCES:
patent: 2867844 (1959-01-01), Hall
patent: 3545045 (1970-12-01), Vinson
patent: 3687586 (1972-08-01), Hasa et al.
patent: 3752622 (1973-08-01), Viadana
patent: 3773446 (1973-11-01), Borrini
patent: 3826599 (1974-07-01), DeSantis et al.
patent: 4166716 (1979-09-01), DeSantis et al.

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