Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product
Patent
1982-09-08
1985-02-26
Meister, James M.
Cutting
With product handling means
Means to move, guide, or permit free fall or flight of product
83139, 83167, 83620, 83698, B26F 114
Patent
active
045011796
ABSTRACT:
A compound die assembly adapted to produce large-sized parts having a plurality of holes, complicated holes and/or lengthy holes wherein a blanking die (103) and a blanking punch (203) are made by wire-cut electro-discharge machining and are directly fixed onto a punch holder (101) and a die holder (201), respectively, a knockout plate (109) and a stripper plate (204) are also made by wire-cut electro-discharge machining and are fixed by hanger bolts onto the punch holder and the die holder through polyurethane rubbers (111, 206), respectively. Guide posts (30) are fixed to the punch holder and extends through the die holder downwardly. A mount (40) to be fixed onto the press bolster has a flat top surface on which the die holder is fixedly mounted and has a plurality of guide-post-receiving holes (401) in which coil springs (402) are contained to raise the guide posts received together with the punch holder. A plurality of load-supporting elements (50) are fixed onto the bottom surface of the die holder near slug clearance holes thereof.
REFERENCES:
patent: 2331059 (1943-10-01), Tauser
patent: 3211035 (1965-10-01), Whistler
patent: 3602079 (1971-08-01), Carlson
patent: 3730039 (1973-05-01), Fedrigo
patent: 3742797 (1973-07-01), Vecchi
patent: 3752028 (1973-08-01), Waizmann
patent: 3848452 (1974-11-01), Gargrave
patent: 4104941 (1978-08-01), Krueger
patent: 4143574 (1979-03-01), Ryser
Iwata Tetsutaro
Knoble J. L.
Meister James M.
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