Metal tools and implements – making – Blank or process – Die
Patent
1982-05-28
1984-04-17
Parker, Roscoe V.
Metal tools and implements, making
Blank or process
Die
29DIG4, 29DIG31, B21K 520
Patent
active
044427344
ABSTRACT:
A method of mounting a hard, wear-resistant insert for use as a core tube, wire drawing die, and the like in which a cylindrical metal casing is provided with opposite front and back sides, the casing having a cylindrical cavity formed in the front side with a flat bottom spaced from the back side. A cylindrical plug is provided having top and bottom ends, the plug being proportioned to have a close fit in the casing cavity. The casing-plug assembly has a reference position with the casing cavity bottom facing upwardly and the plug bottom end facing downwardly. Prior to insertion of the plug in the cavity, either the plug or the casing is inverted from its reference position. A hard insert element is centered with respect to either the inverted end of the plug bottom or the casing cavity bottom and is adhered thereto. Either the plug or the casing is again inverted to the reference position, and the plug is inserted in the casing cavity with the bottom end and insert element facing the cavity bottom. The plug is secured in the cavity and openings are formed in the top end of the plug and the bottom side of the casing communicating with the insert element. In the preferred embodiment, the plug is inverted and the insert element is centered on and adhered to the bottom end thereof.
REFERENCES:
patent: 2778250 (1957-01-01), Ploegsma
patent: 4129052 (1978-12-01), Bieberich
patent: 4365502 (1982-12-01), Carson
Fort Wayne Wire Die, Inc.
Parker Roscoe V.
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