摘要
颤振是影响加工效率的重要因素,文章针对型腔加工中刀具端的动态特性,研究了稳定性加工边界预测,进而得到稳定加工的优化参数,实现加工效率的提高。针对型腔加工中刀具端的多阶模态动态特性,建立了模态坐标下的考虑多阶模态的稳定性预测模型。考虑型腔环切加工过程中的不同刀具轨迹方向,利用稳定性预测模型对不同方向上的轨迹进行了稳定加工边界预测,计算得到了相应的稳定性lobe图。根据稳定性lobe图,分析了经验加工参数的合理性,并给出了利用稳定性加工边界优化的加工参数,提高了型腔的加工效率。
Chatter is an important factor influencing the machining efficiency. For the dynamic behavior of tool end in cavity milling, this paper investigates the stability boundary prediction, and obtains the optimized parameters with stability milling to improve the machining efficiency. According to the dynamic behavior of the tool used in cavity processing, the milling stability prediction model considering multiple modes is estab- lished. Considering the different direction of the tool path in cavity contour-parallel machining, the stability machining boundary is predicted by using the stability prediction model for different direction of the tool path, and the stability lobe diagrams are obtained. According to the stability lobe diagrams, the empirical machining parameters are analyzed, and the optimized parameters are given and improved the machining ef- ficiency of cavity.
出处
《组合机床与自动化加工技术》
北大核心
2017年第8期105-107,111,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金(51275189)
湖北省重大科技创新计划项目(2013AAA008)
关键词
型腔加工
稳定性分析
参数优化
cavity machining
stability analysis
parameters optimization
