Design and application of dynamic balance adjustment fixture for special-shaped eccentric part
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摘要: 鉴于航天产业的生产任务不断加重，研究航天发动机零件的高效加工工艺方法已成为各企业交付生产任务的重要手段之一。面对加工余量多、精度要求高且结构偏心的零件，通过专用工装的设计，有效调节零件的动不平衡，从而实现零件加工效率的有效提升。针对一款体型较大并伴有明显偏心的零件，通过增设配重块，采用多点辅助支撑，对零件实现全约束，增加零件加工系统整体刚性的同时，大幅提升了其加工效率。对设计的专用工装进行了静力学仿真，对其高转速运转下的应力和位移进行了分析，预测了零件在引入工装后的实际加工最高转速，同时进行了实验验证，最终实现该零件的加工效率提升至少1倍。Abstract: In view of the increasing production tasks of the aerospace industry, the research on the efficient processing technology of aerospace engine parts has become one of the important means for enterprises to deliver production tasks. For parts with large machining allowance, high precision requirements and eccentric structure, the dynamic imbalance of parts can be effectively adjusted through the design of special tooling, so as to effectively improve the machining efficiency of parts. For a large part with obvious eccentricity, by adding counterweight and adopting multi-point auxiliary support, the parts are fully restrained, the overall rigidity of the part processing system is increased, and its processing efficiency is greatly improved. The static simulation of the special fixture designed is carried out, the stress and displacement under high speed operation are analyzed, and the actual maximum machining speed of the part after the fixture is introduced is predicted. At the same time, the experimental verification is carried out, and finally the machining efficiency of the part is increased by at least one times.
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Key words:
- eccentric parts /
- dynamic balance adjustment /
- centrifugal force /
- special fixture /
- static simulation
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