Threaded interference fitting method and threaded interference fitting structure for turbine impeller and rotary shaft
A technology of turbine impeller and threaded connection, which is applied to the supporting elements of blades, engine elements, machines/engines, etc., can solve the problem of difficulty in ensuring the long-term stability of the connection strength of the titanium-aluminum alloy turbine impeller and the 42CrMo alloy rotating shaft, and achieve the connection strength. Durable and reliable, durable and reliable connection, the effect of ensuring connection strength
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[0019] A turbine impeller and a rotating shaft connection structure, including a rotating shaft and a turbine impeller, the end of the rotating shaft is threaded, the thread rotation direction is the same as the rotating direction of the turbine, and the connection between the turbine impeller and the rotating shaft has a thread interference fit with the end of the rotating shaft. thread.
[0020] Preferably, cylindrical pin holes are arranged on the rotating shaft and the turbine impeller, and the turbine impeller and the rotating shaft are fixedly connected by a cylindrical pin.
[0021] Preferably, the cylindrical pin holes are arranged symmetrically in the circumferential direction, and the number is 3-6.
[0022] Preferably, the cylindrical pin hole penetrates the rotating shaft and extends into the turbine impeller by 3-5 mm.
[0023] A method for thread interference connection between a turbine impeller and a rotating shaft of a titanium-aluminum supercharger, comprisi...
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