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针对飞机整体座舱骨架数控加工过程中由于复杂结构特征、初始残余应力、装夹和加工策略不当引起的加工变形问题,分析工件加工全过程的变形因素,制定防变形加工工艺方案,综合考虑装夹结构、装夹方法、加工策略、加工顺序和加工参数等因素,通过整体座舱骨架装夹方案优化和加工工艺优化,在国内首次实现了飞机座舱骨架的整体结构工艺方案制定及精确制造,满足了整体座舱骨架的高效优质加工,为复杂结构件、易变形大型锻件类工件的工艺技术研究提供了解决方案。
Aiming at the machining deformation caused by complex structural features, initial residual stress, clamping and improper machining strategies during the NC machining of the whole cockpit frame, the deformation factors of the entire machining process of the aircraft are analyzed, Structure, clamping method, processing strategy, processing sequence and processing parameters and other factors, through the overall cockpit frame clamping program optimization and processing technology optimization, for the first time in the country to achieve the aircraft cockpit skeleton of the overall structural process planning and manufacturing, to meet the The efficient and high-quality processing of the overall cockpit skeleton provides a solution to the research on the technology of complex structural parts and easily deformed large forgings.