Metal founding – Means to shape metallic material – Pressure shaping means
Patent
1977-05-11
1979-02-13
Spicer, Jr., Robert L.
Metal founding
Means to shape metallic material
Pressure shaping means
164295, 164300, 164344, 164404, 308207R, 425435, B22D 1300
Patent
active
041390490
ABSTRACT:
A positioning apparatus for a centrifugal casting machine having an articulated mold that is mounted for rotation in a cantilevered manner on a drive shaft. The positioning apparatus includes a pair of pillow block bearings having arcuate bearing races that operate to allow the drive shaft to be tilted within a predetermined angular range relative to its longitudinal axis. In addition, the positioning apparatus includes a plurality of locking pins each of which are mounted to cooperate respectively with one of a plurality of positioning members mounted on a rotatable mold-supporting face plate of the casting machine. Operation of the lock pins into engagement with the positioning members moves the face plate into a predetermined position relative to its axis of rotation, following a casting cycle of the machine, so that segments of the centrifugal mold can be radially stripped from an article cast therein without unduly distorting the cast article.
Pursuant to the preferred method of the invention the drive shaft of a centrifugal casting machine is rotated about its longitudinal axis while the shaft is tilted within a predetermined angular range relative to a horizontal plane to perform a casting operation. Following the casting cycle, the drive shaft and rotatable casting mold of the machine are raised to a predetermined position of alignment above the tilted position of the shaft during the casting cycle, in order to position the mold for easy removal of mold segments from an article cast therein.
REFERENCES:
patent: 3825057 (1974-07-01), Baumann et al.
patent: 3866661 (1975-02-01), Baumann et al.
Baumann Frederick W.
Kaczkowski Bernard C.
General Electric Company
Myles Vale P.
Spicer, Jr. Robert L.
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