Variation Analysis Considering the Partial Parallel Connection in Aero-Engine Rotor Assembly

The rotation precision of rotors determines the efficiency and quality overall aero-engine, as well its long-term reliable operation ability. As terminal link aero-engine manufacturing, assembly is last guarantee control. Rotor relates to accurate expression connection form design optimization scheme. existing variation model cannot adequately handle partial parallel chain problem, ignoring bayonet circular connector between rotor parts, it still deficient in multistage gyration error In this paper, revolving characteristics were discussed, a novel modeling optimizing method for dimension was proposed. On one hand, features components considering structure researched. Contact point-based torsors represented, system locating points regarded an describe chain. other propagation control stacking A revolution joint introduced unified Jacobian–Torsor model, technique concentricity Therefore, analysis has been developed. Experimental results show that through method, final 0.0539 mm, far less than 0.1595 mm traditional closer true value range 0.030–0.040 mm. Moreover, optimum installed angles can be calculated 3.153 rad, 6.025 2.590 obtain highest 0.040 which strong practical guiding significance.