F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 2/107 (2006.01) F04C 2/08 (2006.01)
Patent
CA 2350578
A rotor (4) for an eccentric screw pump or a subsurface drilling motor consists of a straight, essentially cylindrical core element (21), onto which a shell (22) is forged by a cold-forging process. The forging gives the shell (22) the helical external form required for eccentric screw pumps (1). The rotor (4) described can be produced by non-cutting shaping, which is of considerable advantage in particular in the case of large rotor dimensions, since no waste material is produced.
Selon l'invention, un rotor (4) destiné à une pompe à vis excentrique ou à un moteur de forage souterrain est constitué d'un élément central (21) droit, sensiblement cylindrique, sur lequel est réalisée une chemise (22) selon un procédé de forgeage à froid. Ce forgeage permet de conférer à la chemise (22) la forme extérieure hélicoïdale nécessaire pour les pompes à vis excentriques (1). Le rotor (4) selon l'invention peut être produit sans enlèvement de copeaux, ce qui représente un avantage important en particulier pour la production de rotors de grande dimension, étant donné qu'il n'y a aucun déchet de matière.
Fetherstonhaugh & Co.
Wilhelm Kaechele Gmbh Elastomertechnik
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