Metal founding – Miscellaneous – apparatus
Patent
1986-06-30
1990-07-10
Seidel, Richard K.
Metal founding
Miscellaneous, apparatus
83199, 1401236, B22C 1900, B23D 2300
Patent
active
049400746
ABSTRACT:
A core pinning machine (1) includes a rotatable wire cutting apparatus (6) which comprises a housing (10), a cylinderical shank (13) rotatable within the housing, a cutter (18) with a sharp edged orifice (20) abutted to an end of the shank and a wire guide passage (17) located within the shank parallel to and offset from a central longitudinal axis (16) of the shank. The passage is rotatably alignable with the cutting orifice, allowing passage of the wire through the wire cutting apparatus. The wire cutting apparatus is disposed in a heater (25) which heats the wire as it passes therethrough, with the heated wire then inserted into a wax pattern (7) until a core (8) is contacted. A timer controller (2) registers the stop, and, after a delay, signals an actuator (23) to rotate the shank, which causes misalignment of the passage with the cutter, severing the wire against the sharp edge of the orifice. Incorporation of the rotatable wire cutting apparatus in the core pinning machine provides variable length pins for supporting cores in different depth investment casting wax patterns without retooling.
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patent: 2963785 (1960-12-01), Dilling
patent: 3596703 (1971-08-01), Bishop et al.
patent: 3662816 (1972-05-01), Bishop et al.
patent: 4068702 (1978-01-01), Herold
patent: 4078598 (1978-03-01), Kelso et al.
patent: 4283835 (1981-08-01), Obrochta et al.
patent: 4474224 (1984-10-01), Higginbotham et al.
patent: 4487246 (1984-12-01), Frasier
McVeigh Keven E.
Seidel Richard K.
United Technologies Corporation
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