Metal working – Method of mechanical manufacture – Shaping one-piece blank by removing material
Patent
1981-07-30
1984-01-10
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Shaping one-piece blank by removing material
295276, 51 3, 408 27, 408 37, 408 70, B23Q 700
Patent
active
044246200
ABSTRACT:
A knuckle casting for a railroad coupler is carried by a conveyor to successively-disposed stations. At a first station, the knuckle casting is positioned relative to reaming tools at opposite sides of the conveyor. Position control arms carry conical members to engage with a pivot pin opening in the knuckle casting and hold-down arms support the casting while the pivot pin opening is reamed to a desired size. Thereafter, the knuckle casting is moved to a rough-grinding station where it is engaged by pin members, one of which extends into the reamed pin hole opening. The knuckle casting is raised to a position above the conveyor where it is rotated for contact with a grinding wheel. The position of the grinding wheel is controlled by a cam driven by an arbor shaft used to support the casting. A cam follower moves a frame that supports the grinding wheel to position the grinding wheel according to a desired contour. After the rough-grinding operation is completed, the knuckle casting is lowered onto the conveyor for advancement to a finish-grinding machine where a similar lifting apparatus engages the knuckle casting. The knuckle casting is raised so that the surface thereof engages a driven grinding belt under a predetermined control pressure while the casting is rotated for processing the surface thereof. After the finish-grinding operation is completed, the casting is returned to the conveyor and advanced to a discharge station.
REFERENCES:
patent: 1452103 (1923-04-01), Yerxa
patent: 1495463 (1924-05-01), Tomlinson
patent: 1730650 (1929-10-01), Evans
patent: 2139403 (1938-06-01), Cole
patent: 2156692 (1939-05-01), Hixon
patent: 2160476 (1939-05-01), Kampmeier
patent: 2392169 (1946-01-01), Mansfield
patent: 2654463 (1953-10-01), Church
patent: 3172192 (1965-03-01), Dresden
patent: 3833312 (1974-09-01), Miles et al.
patent: 4206849 (1980-06-01), Kaim
McConway & Torley Corporation
Moon Charlie T.
Murray Thomas H.
Poff Clifford A.
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