| 摘要 |
A one-piece rotor ( 1 ) for a drag vacuum pump ( 21 ) is designed, at least in sections, as a turbomolecular vacuum pump with rotor blades ( 5 ) and stator blades ( 9 ), The rotor ( 1 ) has a hub ( 2 ) whose peripheral surface supports the pump structures. The rotor-side pump structures include, at least in sections, blades ( 5 ), which are arranged in rows ( 4 ) and which are formed from the surface of a blank by means of metal cutting operations. The metal cutting operations include producing radial peripheral grooves ( 3 ) into which stator blade rows ( 9 ) engage when the pump is assembled. In order to simplify the machining of the rotor ( 1 ), another metal cutting operation provides the outer surface of the blank with one or more thread grooves ( 13 ).
|
