摘要
对铣削加工中过程阻尼的形成机理和其对加工稳定性极限的影响进行分析。过程阻尼来源于后刀面与工件干涉产生的犁耕效应,利用隐式龙格库塔法,计算干涉产生的浸入面积以及阻力,建立考虑过程阻尼的非线性模型。仿真结果表明,相对于传统的,不考虑过程阻尼的线性动力学模型,非线性模型中的低速区稳定性极限可显著提高,并且通过铣削实验予以验证。
The formation mechanism of process damping and the influence of process damping on a milling system＆#39;s stability were analyzed.The process damping came from plough effect caused by interference between a flank face and a machined surface.The immersion area and resistance force caused by interference were computed with the implicit Runge-Kuta method and a nonlinear model considering process damping was built.The simulation results indicated that the stability limit in low speed area of the nonlinear model can be improved significantly relative to the linear dynamic model not considering process damping,this conclusion can be verified by milling tests.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第9期16-20,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助(51005118)
