摘要
复杂薄壁工件是航空发动机中的一类关键、重要零件,如何抑制因其弱刚性、材料难加工、强时变特征导致加工过程产生的变形和振动已成为亟待解决的瓶颈问题。夹具的合理布局及提升装夹稳定性可以有效地抑制加工振动。目前,夹具系统的智能化已经成为制约智能加工技术实现的主要瓶颈。研制能够自适应薄壁零件复杂工况的夹具设计成为研究热点。从工件-夹具动力学建模,夹具布局优化、夹紧力优化以及目前自适应夹具设计等几个方面进行综述,希望为今后自适应夹具设计与工程应用提供帮助。
Complex thin-walled workpiece is a kind of key parts in aero-engine. And how to restrain the deformation and vibration of machining process due to its characteristics of weak stiffness, difficult material processing and strong time-varying turns to be a bottleneck to be solved. The reasonable layout of fixture and the promotion of clamping stability can effectively suppress the machining vibration. At present, the intellectualization of fixture system has become the main bottleneck of the popularization of intelligent machining technology. The development of fixture design which can adapt to complex working conditions of thin-wall parts has become a popular research. In this paper, the dynamic modeling of fixture and work-piece, the optimization of fixture layout, the optimization of clamping force and the design of adaptive fixture at present are reviewed. It will be helpful to the design and engineering application of adaptive fixture in the future.
作者
陈冰
杨宝通
牛智炀
齐俊德
CHEN Bing;YANG Baotong;NIU Zhiyang;QI Junde(Key Lab of Contemporary Design and Integrated Manufacturing Technology,Ministry of Education,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《航空制造技术》
2019年第7期14-24,共11页
Aeronautical Manufacturing Technology
基金
国家科技重大专项(2017ZX04011011)
关键词
航空发动机
复杂薄壁件
布局优化
夹紧力优化
自适应夹持
Aero-engine
Complex thin-walled workpiece
Fixture layout optimization
Clamping force optimization
Adaptive fixture design
