Centre clamp for machining aero-engine parts

The utility model discloses a centre fixture for aero-engine part machining, which is characterized by comprising a positioning disc, a centre disc, a centre, an adjusting nut, a bushing, a spring, a pressure sensor, a motor and the like, the positioning disc and the centre disc are coaxially and fixedly connected, a through hole is formed in the center of the centre disc, the bushing is fixedly arranged in the through hole, and the spring is arranged in the bushing. External threads are arranged on the outer surface of the inner end of the lining, internal threads matched with the external threads are arranged on the inner surface of the adjusting nut, the adjusting nut is connected to the lining in a threaded mode, the ejector pin is arranged in the lining in a penetrating mode, the inner end of the ejector pin abuts against the adjusting nut, the outer end of the ejector pin extends out of the lining, the spring is arranged on the ejector pin in a penetrating mode, and one end of the spring abuts against t