Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1995-08-16
1997-04-01
Cuda, Irene
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
418 552, B23P 1500
Patent
active
056154801
ABSTRACT:
A high pressure forming process is used to form asymmetric scroll compressor elements wherein a single or multiple piece die is closed at one end by a stop which is formed to correspond to a side of the scroll compressor element opposite to a scroll. A punch sized to fit within the die includes an endface having a scroll shaped cavity. A blank of an appropriate metal is placed in the die against the stop and the punch is then inserted into the die and fully extended to form the blank into a scroll compressor element with a single stroke of the punch. The punch includes vent holes for allowing trapped gases and lubricants to escape as the scroll is formed. The punch may also include an ejector system to facilitate removal of the scroll compressor elements from the punch/die combination. The stop may be defined by a second punch which can be moved into the die for forming parts or can be held stationary during part formation and then moved to facilitate removal of scroll compressor elements from the punch/die combination. It may be desired in some applications to heat the die, punch, stop/punch and blanks.
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patent: 5103558 (1992-04-01), Herrick et al.
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patent: 5392512 (1995-02-01), Fann et al.
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Amcast Industrial Corporation
Cuda Irene
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