摘要
通过切削过程的分析,建立了工艺系统中零件子系统和切刀子系统的机电力模型,讨论了振动过程中切削力与切削用量关系的动力学方程,推导出一维坐标表示的极限稳定工况条件的数学表达式,研究了振动幅值与切削用量的关系,得出了修光刃精车过程中在一定切削量范围内不会产生自激振动,最后用实验确定了阻尼、刚度等系数的计算公式及切削用量间的关系。
Based on the analysis of the cutting course, the electromechanical dynamic model of accessory and cutter subsystems in the technical system is established. The dynamic equation between the cutting force and cutting depth in the vibration course is discussed and the mathematical expression of limit-stability working condition indicated by one-dimension coordinate is deduced. The relationships between the vibration amplitude and cutting depth are studied, and then the conclusion that selfstimulated vibration can not be generated in the range of certain cutting depth during the course of shaving-blade fine turning is educed. In addition, the relationships between the cutting depth and the calculation formula with the coefficients such as damping and stiffness are determined.
出处
《矿山机械》
北大核心
2008年第14期20-23,共4页
Mining & Processing Equipment
关键词
工艺系统
机电力模型
振动
稳定性
切削用量
Technical system
Electromechanical dynamic model
Vibration
Stability
Cutting depth
